rename prototype folder -> web_backend. closes #75

web_backend/src/main/java/org/hso/ecommerce/action/booking/CreateBookingAction.java

@@ -0,0 +1,31 @@
+package org.hso.ecommerce.action.booking;
+
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.entities.booking.BookingReason;
+
+public class CreateBookingAction {
+
+    private Booking booking;
+
+    public CreateBookingAction(BookingAccountEntry source, BookingAccountEntry destination, BookingReason reason, int amountCent) {
+        booking = new Booking();
+        booking.created = new java.sql.Timestamp(System.currentTimeMillis());
+        booking.reason = reason;
+        booking.amountCent = amountCent;
+
+        assert source != null || destination != null;
+
+        if (source != null) {
+            booking.source = source.copyAddAmount(-amountCent);
+        }
+        if (destination != null) {
+            booking.destination = destination.copyAddAmount(amountCent);
+        }
+
+    }
+
+    public Booking finish() {
+        return booking;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/cronjob/ReadSupplierDataAction.java

@@ -0,0 +1,83 @@
+package org.hso.ecommerce.action.cronjob;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Objects;
+
+import org.hso.ecommerce.api.SupplierService;
+import org.hso.ecommerce.api.data.Article;
+import org.hso.ecommerce.api.data.Supplier;
+
+public class ReadSupplierDataAction {
+    private List<org.hso.ecommerce.entities.supplier.Supplier> suppliers;
+
+    public static class ArticleIdentifier {
+        public final String manufacturer;
+        public final String articleNumber;
+
+        public ArticleIdentifier(String manufacturer, String articleNumber) {
+            this.manufacturer = manufacturer;
+            this.articleNumber = articleNumber;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(manufacturer, articleNumber);
+        }
+
+        @Override
+        public boolean equals(Object other) {
+            if (!(other instanceof ArticleIdentifier)) {
+                return false;
+            }
+            ArticleIdentifier otherId = (ArticleIdentifier) other;
+            return this.manufacturer.equals(otherId.manufacturer) && this.articleNumber.equals(otherId.articleNumber);
+        }
+    }
+
+    public ReadSupplierDataAction(List<org.hso.ecommerce.entities.supplier.Supplier> suppliers) {
+        this.suppliers = suppliers;
+    }
+
+    public static class Offer {
+        public final org.hso.ecommerce.entities.supplier.Supplier dbSupplier;
+        public final Supplier apiSupplier;
+
+        public Offer(org.hso.ecommerce.entities.supplier.Supplier dbSupplier, Supplier apiSupplier) {
+            this.dbSupplier = dbSupplier;
+            this.apiSupplier = apiSupplier;
+        }
+    }
+
+    public static class Result {
+        public final ArrayList<Supplier> supplierData;
+        public final HashMap<ArticleIdentifier, Offer> cheapestOffer;
+
+        public Result(ArrayList<Supplier> supplierData, HashMap<ArticleIdentifier, Offer> cheapestOffer) {
+            this.supplierData = supplierData;
+            this.cheapestOffer = cheapestOffer;
+        }
+    }
+
+    public Result finish() {
+        ArrayList<Supplier> suppliers = new ArrayList<>();
+        HashMap<ArticleIdentifier, Integer> price = new HashMap<>();
+        HashMap<ArticleIdentifier, Offer> cheapest = new HashMap<>();
+        for (org.hso.ecommerce.entities.supplier.Supplier supplier : this.suppliers) {
+            SupplierService service = new SupplierService(supplier.apiUrl);
+            Supplier apiSupplier = service.getSupplier();
+            suppliers.add(apiSupplier);
+            for (Article article : apiSupplier.articles) {
+                ArticleIdentifier identifier = new ArticleIdentifier(article.manufacturer, article.articleNumber);
+                Integer previousPrice = price.get(identifier);
+                if (previousPrice == null || article.pricePerUnitNet < previousPrice) {
+                    price.put(identifier, article.pricePerUnitNet);
+                    cheapest.put(identifier, new Offer(supplier, apiSupplier));
+                }
+            }
+        }
+
+        return new Result(suppliers, cheapest);
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/cronjob/ReorderAction.java

@@ -0,0 +1,111 @@
+package org.hso.ecommerce.action.cronjob;
+
+import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction.ArticleIdentifier;
+import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction.Offer;
+import org.hso.ecommerce.api.SupplierService;
+import org.hso.ecommerce.api.data.Order;
+import org.hso.ecommerce.api.data.OrderConfirmation;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.Timestamp;
+import java.util.HashMap;
+
+public class ReorderAction {
+    private static final Logger log = LoggerFactory.getLogger(ReorderAction.class);
+
+    private Article article;
+    private Integer[] orderedAmounts;
+    private Integer undeliveredReorders;
+    private int amountInStock;
+    private HashMap<ArticleIdentifier, Offer> cheapestOffer;
+    private HashMap<ArticleIdentifier, ArticleOffer> articleOffers;
+
+    public ReorderAction(
+            Article article, Integer[] orderedAmounts,
+            Integer undeliveredReorders,
+            int amountInStock,
+            HashMap<ArticleIdentifier, Offer> cheapestOffer,
+            HashMap<ArticleIdentifier, ArticleOffer> articleOffers
+    ) {
+        this.article = article;
+        this.orderedAmounts = orderedAmounts;
+        this.undeliveredReorders = undeliveredReorders;
+        this.amountInStock = amountInStock;
+        this.cheapestOffer = cheapestOffer;
+        this.articleOffers = articleOffers;
+    }
+
+    private int null_to_zero(Integer input) {
+        return input == null ? 0 : input;
+    }
+
+    private int calculateAmountToReorder() {
+        // Algorithm as described in the documentation
+        int a = null_to_zero(orderedAmounts[0]);
+        int b = null_to_zero(orderedAmounts[1]);
+        int c = null_to_zero(orderedAmounts[2]);
+
+        int x = Math.max(Math.max(a, b), c);
+        int y = Math.min(Math.min(a, b), c);
+
+        int n = 6 * x - 2 * y;
+        if (n < 3) {
+            n = 3;
+        }
+
+        int i = null_to_zero(undeliveredReorders);
+        int l = amountInStock;
+
+        return n - i - l;
+    }
+
+    public SupplierOrder finish() {
+        if (!article.shouldReorder) {
+            return null;
+        }
+
+        int amount = calculateAmountToReorder();
+        if (amount <= 0) {
+            return null;
+        }
+
+        ArticleIdentifier identifier = new ArticleIdentifier(article.related.manufacturer, article.related.articleNumber);
+        Offer offer = cheapestOffer.get(identifier);
+        if (offer == null) {
+            log.info("Could not order \"" + article.title + "\" because there is no supplier delivering it.");
+            return null;
+        }
+
+        ArticleOffer articleOffer = articleOffers.get(identifier);
+        org.hso.ecommerce.api.data.Article apiArticle = offer.apiSupplier.findArticle(identifier.manufacturer,
+                identifier.articleNumber);
+        if (apiArticle.pricePerUnitNet > article.reorderMaxPrice) {
+            log.info("Could not order \"" + article.title + "\" because it is currently too expensive.");
+            return null;
+        }
+
+        Order order = new Order();
+        order.manufacturer = articleOffer.manufacturer;
+        order.articleNumber = articleOffer.articleNumber;
+        order.quantity = amount;
+        order.maxTotalPriceCentNet = apiArticle.pricePerUnitNet * amount;
+
+        OrderConfirmation confirm = new SupplierService(offer.dbSupplier.apiUrl).order(order);
+        SupplierOrder createdOrder = new SupplierOrder();
+        createdOrder.created = new Timestamp(System.currentTimeMillis());
+        createdOrder.supplier = offer.dbSupplier;
+        createdOrder.ordered = articleOffer;
+        createdOrder.numberOfUnits = confirm.quantity;
+        createdOrder.pricePerUnitNetCent = confirm.pricePerUnitNetCent;
+        createdOrder.totalPriceNet = confirm.totalPriceNetCharged;
+        createdOrder.carrier = confirm.carrier;
+        createdOrder.trackingId = confirm.trackingId;
+        createdOrder.estimatedArrival = Timestamp.valueOf(confirm.estimatedArrival);
+
+        return createdOrder;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/cronjob/UpdateOffersAction.java

@@ -0,0 +1,63 @@
+package org.hso.ecommerce.action.cronjob;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map.Entry;
+
+import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction.ArticleIdentifier;
+import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction.Offer;
+import org.hso.ecommerce.api.data.Article;
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+
+public class UpdateOffersAction {
+    private List<ArticleOffer> offers;
+    private HashMap<ArticleIdentifier, Offer> cheapestOffer;
+
+    public UpdateOffersAction(List<ArticleOffer> offers, HashMap<ArticleIdentifier, Offer> cheapestOffer) {
+        this.offers = offers;
+        this.cheapestOffer = cheapestOffer;
+    }
+
+    private HashMap<ArticleIdentifier, ArticleOffer> mapOffers() {
+        HashMap<ArticleIdentifier, ArticleOffer> map = new HashMap<>();
+        for (ArticleOffer offer : offers) {
+            ArticleIdentifier identifier = new ArticleIdentifier(offer.manufacturer, offer.articleNumber);
+            map.put(identifier, offer);
+        }
+        return map;
+    }
+
+    public List<ArticleOffer> finish() {
+        HashMap<ArticleIdentifier, ArticleOffer> availableOffers = mapOffers();
+
+        // Reset all advertise-flags and supplier relations first. They are set again below.
+        for (ArticleOffer offer : availableOffers.values()) {
+            offer.shouldBeAdvertised = false;
+            offer.cheapestSupplier = null;
+        }
+
+        for (Entry<ArticleIdentifier, Offer> cheapestOffer : cheapestOffer.entrySet()) {
+            String manufacturer = cheapestOffer.getKey().manufacturer;
+            String articleNumber = cheapestOffer.getKey().articleNumber;
+            ArticleOffer currentOffer = availableOffers.get(cheapestOffer.getKey());
+            if (currentOffer == null) {
+                currentOffer = new ArticleOffer();
+                currentOffer.manufacturer = manufacturer;
+                currentOffer.articleNumber = articleNumber;
+                offers.add(currentOffer);
+            }
+            Article currentOfferedArticle = cheapestOffer.getValue().apiSupplier.findArticle(manufacturer,
+                    articleNumber);
+            currentOffer.title = currentOfferedArticle.title;
+            currentOffer.vatPercent = currentOfferedArticle.vatPercent;
+            currentOffer.cheapestSupplier = cheapestOffer.getValue().dbSupplier;
+            currentOffer.pricePerUnitNet = currentOfferedArticle.pricePerUnitNet;
+
+            // Set advertise-flag if any supplier wants it to be set
+            if (currentOfferedArticle.shouldBeAdvertised) {
+                currentOffer.shouldBeAdvertised = true;
+            }
+        }
+        return offers;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/shop/CreateOrderAction.java

@@ -0,0 +1,209 @@
+package org.hso.ecommerce.action.shop;
+
+import org.hso.ecommerce.action.booking.CreateBookingAction;
+import org.hso.ecommerce.entities.booking.*;
+import org.hso.ecommerce.entities.shop.Address;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.entities.shop.CustomerOrderPosition;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.entities.warehouse.WarehouseBooking;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPosition;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+
+import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.Date;
+import java.util.List;
+
+public class CreateOrderAction {
+
+    private User user;
+    Address destination;
+
+    private int expectedTotalGrossCent;
+
+    private int totalNetCent;
+    private int totalVatCent;
+    private PaymentMethod method;
+
+    private BookingAccountEntry latestUserBooking;
+    private BookingAccountEntry latestVatBooking;
+    private BookingAccountEntry latestMainBooking;
+
+    private List<OrderItem> orderItems = new ArrayList<>();
+
+    public CreateOrderAction(
+            User user,
+            int expectedTotalGrossCent,
+            Address destination,
+            PaymentMethod method,
+            BookingAccountEntry latestUserBooking,
+            BookingAccountEntry latestVatBooking,
+            BookingAccountEntry latestMainBooking
+    ) {
+        this.user = user;
+        this.expectedTotalGrossCent = expectedTotalGrossCent;
+        this.destination = destination;
+        this.method = method;
+
+        this.latestUserBooking = latestUserBooking;
+        assert latestUserBooking.userAccount.id == user.id;
+
+        this.latestVatBooking = latestVatBooking;
+        assert latestVatBooking.isVATAccount;
+
+        this.latestMainBooking = latestMainBooking;
+        assert latestMainBooking.isMainAccount;
+    }
+
+    public void addArticle(Article article, int quantity, List<WarehouseBookingPositionSlotEntry> availableSlots) {
+        for (WarehouseBookingPositionSlotEntry slot : availableSlots) {
+            assert slot.article.id == article.id;
+        }
+
+        orderItems.add(new OrderItem(article, availableSlots, quantity));
+
+        totalNetCent += article.shopPricePerUnitNetCent * quantity;
+        totalVatCent += article.getVat() * quantity;
+    }
+
+
+    public Result finish() throws ArticleNotInStockException {
+        CustomerOrder order = createOrder();
+        CustomerPayment payment = createPayment();
+
+        List<Booking> bookingList = new ArrayList<>();
+        Booking purchaseBooking = new CreateBookingAction(
+                latestUserBooking, latestMainBooking, new BookingReason(order), order.totalGrossCent).finish();
+        Booking paymentBooking = new CreateBookingAction(
+                null, purchaseBooking.source /* userAccount */, new BookingReason(payment), order.totalGrossCent).finish();
+        Booking vatBooking = new CreateBookingAction(
+                purchaseBooking.destination /* mainAccount */, latestVatBooking, new BookingReason(order), order.totalVatCent).finish();
+        bookingList.add(purchaseBooking);
+        bookingList.add(paymentBooking);
+        bookingList.add(vatBooking);
+
+        WarehouseBooking warehouseBooking = createWarehouseBooking(order);
+
+        return new Result(
+                order,
+                warehouseBooking,
+                bookingList
+        );
+    }
+
+    private WarehouseBooking createWarehouseBooking(CustomerOrder order) throws ArticleNotInStockException {
+        WarehouseBooking booking = new WarehouseBooking();
+        booking.created = new Timestamp(new Date().getTime());
+        booking.reason = new BookingReason(order);
+
+        for (OrderItem item : orderItems) {
+            int needed = item.quantity;
+
+            // Sort for most empty slot first;
+            item.availableSlots.sort(Comparator.comparingInt(a -> a.newSumSlot));
+
+            for (WarehouseBookingPositionSlotEntry slot : item.availableSlots) {
+                if (slot.newSumSlot == 0) {
+                    continue;
+                }
+
+                int remove = Math.min(slot.newSumSlot, needed);
+                needed -= remove;
+
+                WarehouseBookingPosition bookingPosition = new WarehouseBookingPosition();
+
+                bookingPosition.article = item.article;
+                bookingPosition.amount = -remove;
+                bookingPosition.slotEntry = slot.copyAddAmount(-remove, item.article);
+                bookingPosition.booking = booking;
+
+                booking.positions.add(bookingPosition);
+
+                if (needed == 0) {
+                    break;
+                }
+            }
+
+            if (needed > 0) {
+                throw new ArticleNotInStockException(item.article);
+            }
+        }
+
+        return booking;
+    }
+
+    private CustomerPayment createPayment() {
+        CustomerPayment payment = new CustomerPayment();
+        payment.amountCent = totalNetCent + totalVatCent;
+        payment.payment = method;
+        return payment;
+    }
+
+
+    private CustomerOrder createOrder() {
+        assert totalNetCent + totalVatCent == expectedTotalGrossCent;
+
+        CustomerOrder customerOrder = new CustomerOrder();
+        customerOrder.customer = user;
+        customerOrder.destination = destination;
+
+        for (OrderItem item : orderItems) {
+            CustomerOrderPosition position = new CustomerOrderPosition();
+            position.article = item.article;
+            position.pricePerUnit = item.article.shopPricePerUnitNetCent;
+            position.quantity = item.quantity;
+
+            position.order = customerOrder;
+
+            customerOrder.positions.add(position);
+        }
+
+        customerOrder.created = new Timestamp(new Date().getTime());
+
+        customerOrder.totalNetCent = totalNetCent;
+        customerOrder.totalVatCent = totalVatCent;
+        customerOrder.totalGrossCent = totalNetCent + totalVatCent;
+
+        return customerOrder;
+    }
+
+    public static class Result {
+        public final CustomerOrder customerOrder;
+        public final WarehouseBooking warehouseBooking;
+        public final List<Booking> bookings;
+
+        Result(CustomerOrder customerOrder, WarehouseBooking warehouseBooking, List<Booking> bookings) {
+            this.customerOrder = customerOrder;
+            this.warehouseBooking = warehouseBooking;
+            this.bookings = bookings;
+        }
+    }
+
+    private static class OrderItem {
+        List<WarehouseBookingPositionSlotEntry> availableSlots;
+        int quantity;
+        Article article;
+
+        public OrderItem(Article article, List<WarehouseBookingPositionSlotEntry> availableSlots, int quantity) {
+            this.article = article;
+            this.availableSlots = availableSlots;
+            this.quantity = quantity;
+        }
+    }
+
+    public static class ArticleNotInStockException extends Exception {
+        private Article article;
+
+        public ArticleNotInStockException(Article article) {
+            super("The quantity of article '" + article.title + "' is not in stock.");
+            this.article = article;
+        }
+
+        public Article getArticle() {
+            return article;
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/shop/EnableTrackingAction.java

@@ -0,0 +1,16 @@
+package org.hso.ecommerce.action.shop;
+
+import org.hso.ecommerce.api.RestServiceForDelivery;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.springframework.web.client.ResourceAccessException;
+
+import java.sql.Timestamp;
+import java.util.Date;
+
+public class EnableTrackingAction {
+
+    public static void addTrackingInfo(RestServiceForDelivery deliveryService, CustomerOrder customerOrder) throws ResourceAccessException {
+        customerOrder.inDeliverySince = new Timestamp(new Date().getTime());
+        customerOrder.trackingId = deliveryService.getDeliveryID(customerOrder);
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/shop/GetRandomArticlesAction.java

@@ -0,0 +1,19 @@
+package org.hso.ecommerce.action.shop;
+
+import org.hso.ecommerce.entities.shop.Article;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class GetRandomArticlesAction {
+
+    public static List<Article> getRandomArticles(int quantity, List<Article> advertisedArticles) {
+        List<Article> randomisedArticles = new ArrayList<Article>();
+        int loopcount = Math.min(quantity, advertisedArticles.size());
+        for (int i = 0; i < loopcount; i++) {
+            int index = (int) (Math.random() * advertisedArticles.size());
+            randomisedArticles.add(advertisedArticles.remove(index));
+        }
+        return randomisedArticles;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/shop/SearchByTermAction.java

@@ -0,0 +1,40 @@
+package org.hso.ecommerce.action.shop;
+
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class SearchByTermAction {
+
+    public static List<Article> searchByTerm(String sourceTerm, ArticleRepository repository) {
+
+        List<String> terms = Arrays.asList(sourceTerm.split(" "));
+        List<Article> resultArticles = new ArrayList<>();
+
+        terms.forEach(term -> {
+            List<Article> titleArticles = repository.getArticlesByTermInTitle(term); //search in Title
+            titleArticles.forEach(article -> {
+                if(!resultArticles.contains(article)){
+                    resultArticles.add(article);
+                }
+            });
+
+        });
+
+        terms.forEach(term -> {
+            List<Article> descArticles = repository.getArticlesByTermInDescription(term); //search by Term
+            descArticles.forEach(article -> {
+                if(!resultArticles.contains(article)){
+                    resultArticles.add(article);
+                }
+            });
+
+        });
+
+        return resultArticles;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/user/CreateDeliveryData.java

@@ -0,0 +1,48 @@
+package org.hso.ecommerce.action.user;
+
+import org.hso.ecommerce.api.RestServiceForDelivery;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.uimodel.DeliveryData;
+import org.hso.ecommerce.uimodel.DeliveryDataEnum;
+
+import java.sql.Timestamp;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+
+public class CreateDeliveryData {
+
+    public static DeliveryData getDeliveryDataFromCustomerOrder(CustomerOrder customerOrder, CustomerOrderRepository customerOrderRepository, RestServiceForDelivery restServiceForDelivery)
+    {
+        if(customerOrder.trackingId == null)
+            return new DeliveryData("", "", DeliveryDataEnum.NO_TRACKING_ID);
+
+        if(customerOrder.deliveredAt == null)
+        {
+            DeliveryData deliveryData = restServiceForDelivery.getDeliveryData(customerOrder.trackingId);
+
+
+            if(deliveryData.isDelivered())
+            {
+                Calendar calendar = Calendar.getInstance();
+
+                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd-MM-yyyy");
+
+                try {
+                    calendar.setTime(simpleDateFormat.parse(deliveryData.getEstimatedArrival()));
+                } catch (ParseException e) {
+                    e.printStackTrace();
+                }
+
+                customerOrder.deliveredAt = new Timestamp(calendar.getTimeInMillis());
+                customerOrderRepository.save(customerOrder);
+            }
+
+            return deliveryData;
+        }
+
+        SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
+        return new DeliveryData("Lieferung erfolgreich", formatter.format(customerOrder.deliveredAt), DeliveryDataEnum.OK);
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/user/UpdateUserSettingsAction.java

@@ -0,0 +1,83 @@
+package org.hso.ecommerce.action.user;
+
+import org.hso.ecommerce.entities.booking.PaymentMethod;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.user.UserRepository;
+
+public class UpdateUserSettingsAction {
+
+    private User user;
+    private UserRepository repository;
+
+    public UpdateUserSettingsAction(User user, UserRepository repository) {
+        this.user = user;
+        this.repository = repository;
+    }
+
+    public UpdateResult updateEmail(String newMail) {
+        UpdateResult result = new UpdateResult(false);
+        if (!newMail.contains("@")) {
+            result.errorString = "Ändern der Email-Addresse nicht möglich. Bitte versuchen Sie es erneut.";
+        } else {
+            this.user.email = newMail;
+            this.repository.save(this.user);
+            result.updated = true;
+        }
+        return result;
+    }
+
+    public UpdateResult updatePassword(String oldPassword, String password1, String password2) {
+        UpdateResult result = new UpdateResult(false);
+        if (this.user.validatePassword(oldPassword)) {
+            if (password1.equals(password2)) {
+                if (!password1.equals(oldPassword)) {
+                    this.user.setPassword(password1);
+                    this.repository.save(this.user);
+                    result.updated = true;
+                } else {
+                    result.errorString = "Das neue Passwort entspricht dem alten Passwort.";
+                }
+            } else {
+                result.errorString = "Die beiden neuen Passwörter stimmen nicht überein. Bitte versuchen Sie es erneut.";
+            }
+        } else {
+            result.errorString = "Das eingegebene alte Passwort stimmt nicht mit dem momentan gespeicherten Passwort überein. Bitte versuchen Sie es erneut.";
+        }
+        return result;
+    }
+
+    public UpdateResult updateShippingInfo(String salutation, String name, String address) {
+        this.user.salutation = salutation;
+        this.user.defaultDeliveryAddress.name = name;
+        this.user.defaultDeliveryAddress.addressString = address;
+        this.repository.save(this.user);
+        return new UpdateResult(true);
+    }
+
+    public UpdateResult updatePaymentInfo(String creditCardNumber) {
+        UpdateResult result = new UpdateResult(false);
+        if (creditCardNumber.matches("[0-9]+")) {
+            this.user.defaultPayment = PaymentMethod.fromCreditCardNumber(creditCardNumber);
+            this.repository.save(this.user);
+            result.updated = true;
+        } else {
+            result.errorString = "Kreditkartennummer darf nur Zahlen enthalten. Bitte versuchen Sie es erneut.";
+        }
+        return result;
+    }
+
+    public class UpdateResult {
+        public boolean updated;  //if true worked, if false not worked
+        public String errorString;
+
+        public UpdateResult(boolean updated, String errorString) {
+            this.updated = updated;
+            this.errorString = errorString;
+        }
+
+        public UpdateResult(boolean updated) {
+            this.updated = updated;
+            this.errorString = "";
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/warehouse/CalculateWarehouseStatsAction.java

@@ -0,0 +1,73 @@
+package org.hso.ecommerce.action.warehouse;
+
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+
+import java.util.HashSet;
+import java.util.List;
+
+public class CalculateWarehouseStatsAction {
+
+    private List<WarehouseBookingPositionSlotEntry> entryList;
+
+    public CalculateWarehouseStatsAction(List<WarehouseBookingPositionSlotEntry> everyCurrentEntry) {
+        this.entryList = everyCurrentEntry;
+    }
+
+    public WarehouseStats finish() {
+        int numArticles = calculateNumArticles();
+        double efficiency = calculateEfficiency();
+        double ratioUsedSlots = calculateRatioSlotsUsed();
+
+        return new WarehouseStats(numArticles, efficiency, ratioUsedSlots);
+    }
+
+    private double calculateRatioSlotsUsed() {
+        int used = 0;
+
+        for (WarehouseBookingPositionSlotEntry entry : entryList) {
+            if (entry.newSumSlot > 0) {
+                used++;
+            }
+        }
+
+        return ((double) used) / entryList.size();
+    }
+
+    private double calculateEfficiency() {
+        double e = 0;
+
+        for (WarehouseBookingPositionSlotEntry entry : entryList) {
+            if (entry.newSumSlot > 0) {
+                e += entry.newSumSlot / (double) entry.article.warehouseUnitsPerSlot;
+            } else {
+                e += 0;
+            }
+        }
+
+        return e / entryList.size();
+    }
+
+    private int calculateNumArticles() {
+        HashSet<Long> articleIds = new HashSet<>();
+
+        for (WarehouseBookingPositionSlotEntry entry : entryList) {
+            if (entry.newSumSlot > 0) {
+                articleIds.add(entry.article.id);
+            }
+        }
+
+        return articleIds.size();
+    }
+
+    public static class WarehouseStats {
+        public int numArticles;
+        public double efficiency;
+        public double ratioUsedSlots;
+
+        WarehouseStats(int numArticles, double efficiency, double ratioUsedSlots) {
+            this.numArticles = numArticles;
+            this.efficiency = efficiency;
+            this.ratioUsedSlots = ratioUsedSlots;
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/warehouse/CreateManuelBookingAction.java

@@ -0,0 +1,92 @@
+package org.hso.ecommerce.action.warehouse;
+
+import org.hso.ecommerce.entities.booking.BookingReason;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.warehouse.WarehouseBooking;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPosition;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+
+import java.sql.Timestamp;
+import java.util.Date;
+import java.util.Optional;
+
+public class CreateManuelBookingAction {
+
+    private Article article;
+    private int amount;
+    private Optional<WarehouseBookingPositionSlotEntry> source;
+    private Optional<WarehouseBookingPositionSlotEntry> destination;
+    private String reason;
+
+    public CreateManuelBookingAction(Article article, int amount, Optional<WarehouseBookingPositionSlotEntry> source, Optional<WarehouseBookingPositionSlotEntry> destination, String reason) {
+        this.article = article;
+        this.amount = amount;
+        this.source = source;
+        this.destination = destination;
+        this.reason = reason;
+    }
+
+    public WarehouseBooking finish() throws ArticleSlotConstraintFailedException {
+        WarehouseBooking booking = new WarehouseBooking();
+        booking.created = new Timestamp(new Date().getTime());
+        booking.reason = new BookingReason(reason);
+
+        if (source.isPresent()) {
+
+            if (source.get().article.id != article.id) {
+                throw new ArticleSlotConstraintArticleTypeFailedException();
+            }
+
+            WarehouseBookingPosition bookingPosition = new WarehouseBookingPosition();
+            bookingPosition.booking = booking;
+
+            bookingPosition.article = article;
+            bookingPosition.amount = -amount;
+            bookingPosition.slotEntry = source.get().copyAddAmount(-amount, article);
+
+            if (bookingPosition.slotEntry.newSumSlot < 0 || bookingPosition.slotEntry.newSumSlot > article.warehouseUnitsPerSlot) {
+                throw new ArticleSlotConstraintFailedException("The quantity of article can only be set in bounds.");
+            }
+
+            booking.positions.add(bookingPosition);
+        }
+
+        if (destination.isPresent()) {
+
+            if (destination.get().article.id != article.id && destination.get().newSumSlot > 0) {
+                throw new ArticleSlotConstraintArticleTypeFailedException();
+            }
+
+            WarehouseBookingPosition bookingPosition = new WarehouseBookingPosition();
+            bookingPosition.booking = booking;
+
+            bookingPosition.article = article;
+            bookingPosition.amount = amount;
+            bookingPosition.slotEntry = destination.get().copyAddAmount(amount, article);
+
+            if (bookingPosition.slotEntry.newSumSlot < 0 || bookingPosition.slotEntry.newSumSlot > article.warehouseUnitsPerSlot) {
+                throw new ArticleSlotConstraintFailedException("The quantity of article can only be set in bounds.");
+            }
+
+            booking.positions.add(bookingPosition);
+        }
+
+        return booking;
+    }
+
+    public static class ArticleSlotConstraintFailedException extends Exception {
+        public ArticleSlotConstraintFailedException(String s) {
+            super(s);
+        }
+
+        public ArticleSlotConstraintFailedException() {
+            super("The quantity of article can only be set in bounds.");
+        }
+    }
+
+    public static class ArticleSlotConstraintArticleTypeFailedException extends ArticleSlotConstraintFailedException {
+        public ArticleSlotConstraintArticleTypeFailedException() {
+            super("The Article in the slot entry does not match.");
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/action/warehouse/SupplierOrderArrivedAction.java

@@ -0,0 +1,103 @@
+package org.hso.ecommerce.action.warehouse;
+
+import org.hso.ecommerce.entities.booking.BookingReason;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+import org.hso.ecommerce.entities.warehouse.WarehouseBooking;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPosition;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+
+import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class SupplierOrderArrivedAction {
+
+    private final Article article;
+    private final ArrayList<WarehouseBookingPositionSlotEntry> warehouseCandidates;
+    private final SupplierOrder order;
+
+    public SupplierOrderArrivedAction(List<WarehouseBookingPositionSlotEntry> warehouseCandidates, SupplierOrder order, Article article) {
+        this.warehouseCandidates = new ArrayList<>(warehouseCandidates);
+        this.order = order;
+        this.article = article;
+    }
+
+    public Result finish() throws NoSpaceInWarehouseException {
+        // Sort for most filled slot first;
+        warehouseCandidates.sort((b, a) -> Integer.compare(a.newSumSlot, b.newSumSlot));
+
+        int needed = order.numberOfUnits;
+
+        WarehouseBooking booking = new WarehouseBooking();
+        booking.created = new Timestamp(new Date().getTime());
+        booking.reason = new BookingReason(order);
+
+        for (WarehouseBookingPositionSlotEntry entry : warehouseCandidates) {
+            int canBeAdded = article.warehouseUnitsPerSlot - entry.newSumSlot;
+
+            if (canBeAdded == 0) {
+                // this slot is full, skip
+                continue;
+            }
+
+            int willBeAdded = Math.min(canBeAdded, needed);
+            needed -= willBeAdded;
+
+            WarehouseBookingPosition bookingPosition = new WarehouseBookingPosition();
+
+            bookingPosition.article = article;
+            bookingPosition.amount = willBeAdded;
+            bookingPosition.slotEntry = entry.copyAddAmount(willBeAdded, article);
+            bookingPosition.booking = booking;
+
+            booking.positions.add(bookingPosition);
+
+            if (needed == 0) {
+                break;
+            }
+        }
+
+        if (needed > 0) {
+            throw new NoSpaceInWarehouseException(article);
+        }
+
+        order.delivered = new Timestamp(new Date().getTime());
+        return new Result(order, booking);
+    }
+
+    public static class Result extends Exception {
+
+        private final SupplierOrder order;
+        private final WarehouseBooking booking;
+
+        public Result(SupplierOrder order, WarehouseBooking booking) {
+            this.order = order;
+            this.booking = booking;
+        }
+
+        public SupplierOrder getOrder() {
+            return order;
+        }
+
+        public WarehouseBooking getBooking() {
+            return booking;
+        }
+    }
+
+
+    public static class NoSpaceInWarehouseException extends Exception {
+        private Article article;
+
+        public NoSpaceInWarehouseException(Article article) {
+            super("The quantity of article '" + article.title + "' does not fit in warehouse.");
+            this.article = article;
+        }
+
+        public Article getArticle() {
+            return article;
+        }
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/api/RestServiceForDelivery.java

@@ -0,0 +1,83 @@
+package org.hso.ecommerce.api;
+
+import org.hso.ecommerce.app.config.AppSettings;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.uimodel.DeliveryData;
+import org.hso.ecommerce.uimodel.DeliveryDataEnum;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.http.*;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.ResourceAccessException;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.UriComponentsBuilder;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Service
+public class RestServiceForDelivery {
+
+    @Autowired
+    private final RestTemplateBuilder restTemplateBuilder = null;
+
+    @Autowired
+    private final AppSettings settings = null;
+
+    private String getDeliveryEndpoint() {
+        return settings.getParcelServiceApiURL();
+    }
+
+
+    public String getDeliveryID(CustomerOrder customerOrder) throws ResourceAccessException {
+        String url = getDeliveryEndpoint() + "/newDelivery";
+
+        RestTemplate restTemplate = restTemplateBuilder.build();
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        Map<String, String> requestBody = new HashMap<>();
+
+        requestBody.put("name", customerOrder.destination.name);
+        requestBody.put("address", customerOrder.destination.addressString);
+
+        HttpEntity<Map<String, String>> entity = new HttpEntity<>(requestBody, headers);
+
+        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, entity, String.class);
+
+        if (response.getStatusCode() == HttpStatus.OK) {
+            return response.getBody();
+        } else {
+            throw new ResourceAccessException("Http Status wrong");
+        }
+    }
+
+    public DeliveryData getDeliveryData(String trackingID) {
+
+        String url = getDeliveryEndpoint() + "/status";
+
+        RestTemplate restTemplate = restTemplateBuilder.build();
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url).queryParam("trackingID", trackingID);
+
+        HttpEntity<?> entity = new HttpEntity<>(headers);
+
+        ResponseEntity<DeliveryData> response;
+
+        try {
+            response = restTemplate.exchange(builder.toUriString(), HttpMethod.GET, entity, DeliveryData.class);
+            if (response.getStatusCode() == HttpStatus.OK) {
+                return response.getBody();
+            } else {
+
+                return new DeliveryData("", "", DeliveryDataEnum.NO_DATA);
+            }
+        } catch (Exception e) {
+            return new DeliveryData("", "", DeliveryDataEnum.NO_DATA);
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/api/SupplierService.java

@@ -0,0 +1,27 @@
+package org.hso.ecommerce.api;
+
+import org.hso.ecommerce.api.data.Order;
+import org.hso.ecommerce.api.data.OrderConfirmation;
+import org.hso.ecommerce.api.data.Supplier;
+import org.springframework.web.client.RestTemplate;
+
+public class SupplierService {
+
+    private final String url;
+
+    public SupplierService(String url) {
+        this.url = url;
+    }
+
+    public Supplier getSupplier() {
+        RestTemplate restTemplate = new RestTemplate();
+
+        return restTemplate.getForObject(url, Supplier.class);
+    }
+
+    public OrderConfirmation order(Order order) {
+        RestTemplate restTemplate = new RestTemplate();
+
+        return restTemplate.postForObject(url + "/order", order, OrderConfirmation.class);
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/api/data/Article.java

@@ -0,0 +1,11 @@
+package org.hso.ecommerce.api.data;
+
+public class Article {
+    public String title;
+    public String manufacturer;
+    public String articleNumber;
+
+    public int vatPercent;
+    public int pricePerUnitNet;
+    public boolean shouldBeAdvertised;
+}

web_backend/src/main/java/org/hso/ecommerce/api/data/Order.java

@@ -0,0 +1,9 @@
+package org.hso.ecommerce.api.data;
+
+public class Order {
+    public String manufacturer;
+    public String articleNumber;
+
+    public int quantity;
+    public int maxTotalPriceCentNet;
+}

web_backend/src/main/java/org/hso/ecommerce/api/data/OrderConfirmation.java

@@ -0,0 +1,18 @@
+package org.hso.ecommerce.api.data;
+
+import java.time.LocalDateTime;
+
+public class OrderConfirmation {
+    public String manufacturer;
+    public String articleNumber;
+
+    public int quantity;
+
+    public int pricePerUnitNetCent;
+    public int discountNetCent;
+    public int totalPriceNetCharged;
+
+    public String carrier;
+    public String trackingId;
+    public LocalDateTime estimatedArrival;
+}

web_backend/src/main/java/org/hso/ecommerce/api/data/Supplier.java

@@ -0,0 +1,21 @@
+package org.hso.ecommerce.api.data;
+
+import java.util.List;
+
+public class Supplier {
+
+    public String id;
+    public String name;
+    public SupplierDiscount discount;
+    public List<Article> articles;
+
+    public Article findArticle(String manufacturer, String articleNumber) {
+        for (Article a : articles) {
+            if (a.manufacturer.equals(manufacturer) && a.articleNumber.equals(articleNumber)) {
+                return a;
+            }
+        }
+
+        return null;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/api/data/SupplierDiscount.java

@@ -0,0 +1,6 @@
+package org.hso.ecommerce.api.data;
+
+public class SupplierDiscount {
+    public int minimumDailySalesVolumeNetCent;
+    public int percentDiscount;
+}

web_backend/src/main/java/org/hso/ecommerce/app/Application.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.app;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@SpringBootApplication
+@ComponentScan(basePackages = {"org.hso.ecommerce"})
+@EntityScan("org.hso.ecommerce")
+@EnableJpaRepositories("org.hso.ecommerce")
+public class Application {
+
+    public static void main(String[] args) {
+
+        SpringApplication.run(Application.class, args);
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/app/Config.java

@@ -0,0 +1,30 @@
+package org.hso.ecommerce.app;
+
+import org.hso.ecommerce.components.ErrorDemoInterceptor;
+import org.hso.ecommerce.components.InfoDemoInterceptor;
+import org.hso.ecommerce.components.LoginIntercepter;
+import org.hso.ecommerce.components.ShoppingCartInterceptor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class Config implements WebMvcConfigurer {
+
+    // Copied from https://stackoverflow.com/questions/18218386/cannot-autowire-service-in-handlerinterceptoradapter/18218439
+    // Currently not needed for the other interceptors. They will be removed anyway.
+    @Bean
+    public LoginIntercepter buildLoginIntercepter() {
+        return new LoginIntercepter();
+    }
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(buildLoginIntercepter());
+        registry.addInterceptor(new ErrorDemoInterceptor());
+        registry.addInterceptor(new InfoDemoInterceptor());
+        registry.addInterceptor(new ShoppingCartInterceptor());
+
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/app/config/AppSettings.java

@@ -0,0 +1,161 @@
+package org.hso.ecommerce.app.config;
+
+import java.io.*;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.hso.ecommerce.app.config.YAMLData.Address;
+import org.springframework.stereotype.Component;
+import org.yaml.snakeyaml.Yaml;
+import org.yaml.snakeyaml.constructor.Constructor;
+
+import javax.annotation.PostConstruct;
+
+@Component("appSettings")
+public class AppSettings {
+
+	private YAMLData data;
+	private final String configFile = "config.yml";
+
+	private String installationName;
+	private String companyName;
+	private Address companyAddress;
+	private int numberOfStorageSpaces;
+	private List<YAMLData.Supplier> suppliers;
+	private String parcelServiceName;
+	private String parcelServiceApiURL;
+	
+	/**
+	 * on initialization read the config and store the data in static objects
+	 */
+	@PostConstruct
+	public void init() {
+		data = readConfig();
+
+		installationName = data.getInstallationName();
+		companyName = data.getCompanyName();
+		companyAddress = data.getCompanyAddress();
+		numberOfStorageSpaces = data.getNumberOfStorageSpaces();
+		suppliers = data.getSuppliers();
+		parcelServiceName = data.getParcelServiceName();
+		parcelServiceApiURL = data.getParcelServiceApiURL();
+
+		System.out.println("Initialised Settings!");
+	}
+
+	/**
+	 * write the default config file
+	 */
+	public void writeDefaultConfig() {
+		YAMLData data = new YAMLData();
+		data.setInstallationName("eCommerce");
+		data.setCompanyName("eCommerce Shop UG");
+		data.setCompanyAddress(new Address(
+				"Musterstraße",
+				"1",
+				"12345",
+				"Musterstadt",
+				"Germany"
+		));
+		data.setNumberOfStorageSpaces(128);
+
+		List<YAMLData.Supplier> suppliers = new ArrayList<>();
+		suppliers.add(new YAMLData.Supplier(
+				"Bank of Chees",
+				"d41d8cd98f00b204e9800998ecf8427e",
+				"http://[::1]:8081/bank/",
+				4,
+				new Address(
+						"Musterstraße",
+						"2",
+						"12345",
+						"Musterstadt",
+						"Germany"
+				)
+		));
+		suppliers.add(new YAMLData.Supplier(
+				"MDA",
+				"18a17da5bac1cf00551b08c3e98720f5",
+				"http://[::1]:8081/mda/",
+				5,
+				new Address(
+						"Musterstraße",
+						"3",
+						"12345",
+						"Musterstadt",
+						"Germany"
+				)
+		));
+		data.setSuppliers(suppliers);
+
+		data.setParcelServiceName("Parcel Service");
+		data.setParcelServiceApiURL("http://[::1]:8082/");
+
+		try (FileWriter writer = new FileWriter("./" + configFile)) {
+			Yaml yaml = new Yaml();
+			yaml.dump(data, writer);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+
+	}
+
+	/**
+	 * read a config file named "eCommerce_config.yml" from the applications root directory
+	 * @return the settings as YAMLData object
+	 */
+	public YAMLData readConfig() {
+		YAMLData data = new YAMLData();
+
+		File file = new File("./" + configFile);
+		if (!file.exists()) {
+			writeDefaultConfig();
+		}
+
+		try (InputStream inputStream = new FileInputStream("./" + configFile)) {
+			Yaml yaml = new Yaml(new Constructor(YAMLData.class));
+			data = yaml.load(inputStream);
+		} catch (FileNotFoundException e) {
+			System.err.println("The file \"" + configFile + "\" has not been found, please create a valid Configuration file.");
+			e.printStackTrace();
+			System.exit(1);
+		} catch (IOException e) {
+			e.printStackTrace();
+			System.exit(1);
+		}
+
+		return data;
+	}
+
+	public YAMLData getData() {
+		return data;
+	}
+
+	public String getInstallationName() {
+		return installationName;
+	}
+
+	public String getCompanyName() {
+		return companyName;
+	}
+
+	public Address getCompanyAddress() {
+		return companyAddress;
+	}
+
+	public int getNumberOfStorageSpaces() {
+		return numberOfStorageSpaces;
+	}
+
+	public List<YAMLData.Supplier> getSuppliers() {
+		return suppliers;
+	}
+
+	public String getParcelServiceName() {
+		return parcelServiceName;
+	}
+
+	public String getParcelServiceApiURL() {
+		return parcelServiceApiURL;
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/app/config/YAMLData.java

@@ -0,0 +1,183 @@
+package org.hso.ecommerce.app.config;
+
+import java.util.List;
+
+public class YAMLData {
+
+	private String installationName;
+	private String companyName;
+	private Address companyAddress;
+	private int numberOfStorageSpaces;
+	private List<Supplier> suppliers;
+	private String parcelServiceName;
+	private String parcelServiceApiURL;
+	
+	
+	public String getInstallationName() {
+		return installationName;
+	}
+	public void setInstallationName(String installationName) {
+		this.installationName = installationName;
+	}
+	public String getCompanyName() {
+		return companyName;
+	}
+	public void setCompanyName(String companyName) {
+		this.companyName = companyName;
+	}
+	public Address getCompanyAddress() {
+		return companyAddress;
+	}
+	public void setCompanyAddress(Address companyAddress) {
+		this.companyAddress = companyAddress;
+	}
+	public int getNumberOfStorageSpaces() {
+		return numberOfStorageSpaces;
+	}
+	public void setNumberOfStorageSpaces(int numberOfStorageSpaces) {
+		this.numberOfStorageSpaces = numberOfStorageSpaces;
+	}
+	public List<Supplier> getSuppliers() {
+		return suppliers;
+	}
+	public void setSuppliers(List<Supplier> suppliers) {
+		this.suppliers = suppliers;
+	}
+	public String getParcelServiceName() {
+		return parcelServiceName;
+	}
+	public void setParcelServiceName(String parcelServiceName) {
+		this.parcelServiceName = parcelServiceName;
+	}
+	public String getParcelServiceApiURL() {
+		return parcelServiceApiURL;
+	}
+	public void setParcelServiceApiURL(String parcelServiceApiURL) {
+		this.parcelServiceApiURL = parcelServiceApiURL;
+	}
+	
+	public static class Address {
+
+		public String streetName;
+		public String houseNumber;
+		public String zipCode;
+		public String cityName;
+		public String countryName;
+
+		public Address() {
+			// needed by snakeyaml
+		}
+
+		public Address(String streetName, String houseNumber, String zipCode, String cityName, String countryName) {
+			this.streetName = streetName;
+			this.houseNumber = houseNumber;
+			this.zipCode = zipCode;
+			this.cityName = cityName;
+			this.countryName = countryName;
+		}
+
+		public String getStreetName() {
+			return streetName;
+		}
+
+		public void setStreetName(String streetName) {
+			this.streetName = streetName;
+		}
+
+		public String getHouseNumber() {
+			return houseNumber;
+		}
+
+		public void setHouseNumber(String houseNumber) {
+			this.houseNumber = houseNumber;
+		}
+
+		public String getZipCode() {
+			return zipCode;
+		}
+
+		public void setZipCode(String zipCode) {
+			this.zipCode = zipCode;
+		}
+
+		public String getCityName() {
+			return cityName;
+		}
+
+		public void setCityName(String cityName) {
+			this.cityName = cityName;
+		}
+
+		public String getCountryName() {
+			return countryName;
+		}
+
+		public void setCountryName(String countryName) {
+			this.countryName = countryName;
+		}
+	}
+
+	public static class Supplier {
+
+		public String name;
+		public String id;
+		public String apiURL;
+		public int deliveryTime;
+		public Address companyAddress;
+
+
+		public Supplier() {
+			// needed by snakeyaml
+		}
+
+		public Supplier(String name, String id, String apiURL, int deliveryTime, Address companyAddress) {
+			this.name = name;
+			this.id = id;
+			this.apiURL = apiURL;
+			this.deliveryTime = deliveryTime;
+			this.companyAddress = companyAddress;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public String getId() {
+			return id;
+		}
+
+		public void setId(String id) {
+			this.id = id;
+		}
+
+		public String getApiURL() {
+			return apiURL;
+		}
+
+		public void setApiURL(String apiURL) {
+			this.apiURL = apiURL;
+		}
+
+		public int getDeliveryTime() {
+			return deliveryTime;
+		}
+
+		public void setDeliveryTime(int deliveryTime) {
+			this.deliveryTime = deliveryTime;
+		}
+
+		public Address getCompanyAddress() {
+			return companyAddress;
+		}
+
+		public void setCompanyAddress(Address companyAddress) {
+			this.companyAddress = companyAddress;
+		}
+
+	}
+
+}

web_backend/src/main/java/org/hso/ecommerce/components/AdminInitializer.java

@@ -0,0 +1,36 @@
+package org.hso.ecommerce.components;
+
+import org.hso.ecommerce.entities.shop.Address;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+import java.sql.Timestamp;
+import java.util.Optional;
+
+@Component
+public class AdminInitializer {
+
+	@Autowired
+	private final UserRepository userRepository = null;
+
+	@PostConstruct
+	public void init() {
+		Optional<Integer> numberOfEmployees = userRepository.numberOfEmployees();
+		if (numberOfEmployees.orElse(0) == 0) {
+			// create first admin user
+			User firstAdmin = new User();
+			firstAdmin.created = new Timestamp(System.currentTimeMillis());
+			firstAdmin.defaultDeliveryAddress = new Address();
+			firstAdmin.defaultDeliveryAddress.name = "admin";
+			firstAdmin.defaultPayment = null;
+			firstAdmin.email = "admin";
+			firstAdmin.isActive = true;
+			firstAdmin.isEmployee = true;
+			firstAdmin.setPassword("admin");
+			userRepository.save(firstAdmin); //save to DB
+		}
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/components/ErrorDemoInterceptor.java

@@ -0,0 +1,30 @@
+package org.hso.ecommerce.components;
+
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+@Component
+public class ErrorDemoInterceptor implements HandlerInterceptor {
+    @Override
+    public boolean preHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+
+        request.setAttribute("error", request.getParameter("error"));
+        return true;
+    }
+
+    @Override
+    public void postHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler,
+            ModelAndView modelAndView) throws Exception {
+    }
+
+    @Override
+    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
+                                Object handler, Exception exception) throws Exception {
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/components/InfoDemoInterceptor.java

@@ -0,0 +1,30 @@
+package org.hso.ecommerce.components;
+
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+@Component
+public class InfoDemoInterceptor implements HandlerInterceptor {
+    @Override
+    public boolean preHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+
+        request.setAttribute("info", request.getParameter("info"));
+        return true;
+    }
+
+    @Override
+    public void postHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler,
+            ModelAndView modelAndView) throws Exception {
+    }
+
+    @Override
+    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
+                                Object handler, Exception exception) throws Exception {
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/components/LoginIntercepter.java

@@ -0,0 +1,81 @@
+package org.hso.ecommerce.components;
+
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.hso.ecommerce.entities.user.User;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.util.Optional;
+
+@Component
+public class LoginIntercepter implements HandlerInterceptor {
+
+    @Autowired
+    private final UserRepository userRepository = null;
+
+    @Override
+    public boolean preHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+
+        HttpSession session = request.getSession();
+        Object userId = session.getAttribute("userId");
+        Optional<User> user = null;
+
+        if (request.getRequestURI().startsWith("/user/")) {
+            System.out.println("USER");
+
+            if (userId == null) {
+                session.setAttribute("afterLogin", request.getRequestURI());
+                response.sendRedirect("/login");
+                return false;
+            }
+        }
+
+        if (request.getRequestURI().startsWith("/intern/")) {
+            System.out.println("intern");
+
+            if (userId == null) {
+                session.setAttribute("afterLogin", request.getRequestURI());
+                response.sendRedirect("/login");
+                return false;
+            }
+
+            user = userRepository.findById((Long) userId);
+
+            if(user.isPresent() && !user.get().isEmployee)
+            {
+                session.setAttribute("afterLogin", request.getRequestURI());
+                response.sendRedirect("/");
+                return false;
+            }
+        }
+
+        if (!request.getRequestURI().startsWith("/login")) {
+            session.removeAttribute("afterLogin");
+        }
+
+        if (userId != null) {
+            if (user == null)
+                user = userRepository.findById((Long) userId);
+            user.ifPresent(value -> request.setAttribute("user", value));
+        }
+
+        return true;
+    }
+
+    @Override
+    public void postHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler,
+            ModelAndView modelAndView) throws Exception {
+    }
+
+    @Override
+    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
+                                Object handler, Exception exception) throws Exception {
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/components/ShoppingCartInterceptor.java

@@ -0,0 +1,43 @@
+package org.hso.ecommerce.components;
+
+import org.hso.ecommerce.entities.shop.ShoppingCart;
+import org.springframework.web.servlet.HandlerInterceptor;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+
+public class ShoppingCartInterceptor implements HandlerInterceptor {
+
+    @Override
+    public boolean preHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+
+        HttpSession session = request.getSession();
+        Object shoppingCart = session.getAttribute("shoppingCart");
+
+        if (shoppingCart == null) {
+            shoppingCart = new ShoppingCart();
+        }
+
+        request.setAttribute("shoppingCart", shoppingCart);
+
+        return true;
+    }
+
+    @Override
+    public void postHandle(
+            HttpServletRequest request, HttpServletResponse response, Object handler,
+            ModelAndView modelAndView) throws Exception {
+
+        HttpSession session = request.getSession();
+        Object shoppingCart = request.getAttribute("shoppingCart");
+        session.setAttribute("shoppingCart", shoppingCart);
+    }
+
+    @Override
+    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
+                                Object handler, Exception exception) throws Exception {
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/components/SlotInitializer.java

@@ -0,0 +1,35 @@
+package org.hso.ecommerce.components;
+
+import org.hso.ecommerce.app.config.AppSettings;
+import org.hso.ecommerce.entities.warehouse.Slot;
+import org.hso.ecommerce.repos.warehouse.SlotRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+
+@Component
+public class SlotInitializer {
+
+	@Autowired
+	private final SlotRepository slotRepository = null;
+
+    @Autowired
+    private final AppSettings appSettings = null;
+
+    @PostConstruct
+    public void init() {
+        int NUM_SLOTS = appSettings.getNumberOfStorageSpaces();
+
+        for (int i = 1; i <= NUM_SLOTS; i++) {
+            if (!slotRepository.findBySlotNum(i).isPresent()) {
+                Slot slotAdded = new Slot();
+                slotAdded.slotNum = i;
+                slotRepository.save(slotAdded);
+
+                System.out.println("Added Slot " + i + " to DB");
+            }
+        }
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/components/SupplierInitializer.java

@@ -0,0 +1,42 @@
+package org.hso.ecommerce.components;
+
+import org.hso.ecommerce.app.config.AppSettings;
+import org.hso.ecommerce.app.config.YAMLData;
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.hso.ecommerce.repos.supplier.SupplierRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+import java.util.Optional;
+
+@Component
+public class SupplierInitializer {
+
+    @Autowired
+    private final SupplierRepository supplierRepository = null;
+
+    @Autowired
+    private final AppSettings appSettings = null;
+
+    @PostConstruct
+    public void init() {
+        for (YAMLData.Supplier cfg : appSettings.getSuppliers()) {
+            Optional<Supplier> sup = supplierRepository.findByUuid(cfg.id);
+
+            Supplier supplier;
+            if (sup.isPresent()) {
+                supplier = sup.get();
+                supplier.name = cfg.name;
+                supplier.apiUrl = cfg.apiURL;
+            } else {
+                supplier = new Supplier();
+                supplier.uuid = cfg.id;
+                supplier.apiUrl = cfg.apiURL;
+                supplier.name = cfg.name;
+            }
+            supplierRepository.save(supplier);
+        }
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/LoginController.java

@@ -0,0 +1,70 @@
+package org.hso.ecommerce.controller;
+
+import org.hso.ecommerce.entities.shop.ShoppingCart;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.util.Optional;
+
+@Controller
+@RequestMapping("/")
+public class LoginController {
+
+	@Autowired
+	private final UserRepository userRepository = null;
+
+	@GetMapping("login")
+	public String login() {
+		return "login";
+	}
+
+	@PostMapping("login")
+	public String loginPost(HttpServletRequest request, HttpServletResponse response,
+			@RequestParam("username") String username, @RequestParam("password") String password, HttpSession session) {
+
+		String gto = (String) session.getAttribute("afterLogin");
+
+		Optional<User> user = userRepository.findByEmail(username);
+		if (!user.isPresent()) {
+			request.setAttribute("error", "Die Email Adresse falsch.");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return "login";
+		}
+
+		if (!user.get().validatePassword(password)) {
+			request.setAttribute("error", "Das Passwort ist falsch.");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return "login";
+		}
+
+		if (!user.get().isActive) {
+			request.setAttribute("error", "Dieses Konto ist deaktiviert..");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return "login";
+		}
+
+		session.setAttribute("userId", user.get().getId());
+
+		if (gto != null && gto.startsWith("/")) {
+			return "redirect:" + gto;
+		} else if (user.get().isEmployee) {
+			return "redirect:/intern/";
+		} else {
+			return "redirect:/";
+		}
+	}
+
+	@PostMapping("logout")
+	public String logoutPost(@RequestAttribute(value = "shoppingCart") ShoppingCart shoppingCart, HttpSession session) {
+		session.removeAttribute("userId");
+		shoppingCart.clear();
+
+		return "redirect:/";
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/controller/RegisterController.java

@@ -0,0 +1,79 @@
+package org.hso.ecommerce.controller;
+
+import org.hso.ecommerce.entities.shop.Address;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.util.Optional;
+
+@Controller
+public class RegisterController {
+
+	@Autowired
+	private final UserRepository userRepository = null;
+
+	@PostMapping("/register")
+	public String registerPost(HttpServletRequest request, HttpServletResponse response,
+			@RequestParam("username") String username, @RequestParam("password") String password,
+			@RequestParam("password2") String password2, @RequestParam("salutation") String salutation,
+			@RequestParam("name") String name, @RequestParam("address") String address,
+			HttpSession session) {
+		Optional<User> user = userRepository.findByEmail(username);
+		if (user.isPresent()) {
+			request.setAttribute("error", "Die Email Adresse existiert bereits.");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return "register";
+		}
+
+		if (!password.equals(password2)) {
+			request.setAttribute("error", "Die Passwörter stimmen nicht überein.");
+			response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+			return "register";
+		}
+
+		// set values for new user
+		User newUser = new User();
+		newUser.email = username;
+		newUser.setPassword(password);
+		newUser.email = username;
+		newUser.isEmployee = false;
+		newUser.salutation = salutation;
+		newUser.defaultPayment = null;
+
+		newUser.isActive = true;
+		newUser.created = new java.sql.Timestamp(System.currentTimeMillis());
+
+		Address newAddress = new Address();
+		newAddress.name = name;
+		newAddress.addressString = address;
+		newUser.defaultDeliveryAddress = newAddress;
+
+		userRepository.save(newUser); // save newUser
+
+		user = userRepository.findByEmail(username);
+		session.setAttribute("userId", user.get().getId());
+
+		String gto = (String) session.getAttribute("afterLogin");
+
+		//login after register
+		if (gto != null && gto.startsWith("/")) {
+			return "redirect:" + gto;	
+		} else {
+			return "redirect:/";
+		}
+
+	}
+
+	@GetMapping("/register")
+	public String register() {
+		return "register";
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/controller/UserController.java

@@ -0,0 +1,159 @@
+package org.hso.ecommerce.controller;
+
+import org.hso.ecommerce.action.user.CreateDeliveryData;
+import org.hso.ecommerce.action.user.UpdateUserSettingsAction;
+import org.hso.ecommerce.api.RestServiceForDelivery;
+import org.hso.ecommerce.app.config.AppSettings;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.hso.ecommerce.uimodel.DeliveryData;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Controller
+@RequestMapping("/user")
+public class UserController {
+
+    @Autowired
+    private final UserRepository userRepository = null;
+
+    @Autowired
+    private final CustomerOrderRepository customerOrderRepository = null;
+
+    @Autowired
+    private final RestServiceForDelivery restServiceForDelivery = null;
+
+    @Autowired
+    private final AppSettings appSettings = null;
+
+    @GetMapping("/")
+    public String user() {
+        return "redirect:/user/settings";
+    }
+
+    @GetMapping("/settings")
+    public String userSettings(Model model,
+                               @RequestAttribute("user") User user
+    ) {
+        model.addAttribute("user", user);
+
+        return "user/settings";
+    }
+
+    @GetMapping("/orders/")
+    public String userOrders(
+            @RequestAttribute("user") User user,
+            Model model
+    ) {
+        List<CustomerOrder> orders = customerOrderRepository.getOrdersByUserId(user.id);
+
+        List<CustomerOrderDelivery> customerOrderDeliveryDataMap = orders
+                .stream()
+                .map(o -> new CustomerOrderDelivery(o, CreateDeliveryData.getDeliveryDataFromCustomerOrder(o, customerOrderRepository, restServiceForDelivery)))
+                .collect(Collectors.toList());
+
+        model.addAttribute("orderDeliveryDataMap", customerOrderDeliveryDataMap);
+        model.addAttribute("deliveryService", appSettings.getParcelServiceName());
+
+        return "user/orders/index";
+    }
+
+    static class CustomerOrderDelivery {
+        private CustomerOrder customerOrder;
+        private DeliveryData deliveryData;
+
+        public CustomerOrderDelivery(CustomerOrder customerOrder, DeliveryData deliveryData) {
+            this.customerOrder = customerOrder;
+            this.deliveryData = deliveryData;
+        }
+
+        public CustomerOrder getCustomerOrder() {
+            return customerOrder;
+        }
+
+        public DeliveryData getDeliveryData() {
+            return deliveryData;
+        }
+    }
+
+    @PostMapping("/settings/changeMail")
+    public String changeMail(HttpSession session,
+                             @RequestParam("email") String email,
+                             HttpServletRequest request
+    ) {
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
+
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        UpdateUserSettingsAction.UpdateResult result = cusa.updateEmail(email);
+        if (result.updated == false) {
+            request.setAttribute("error", result.errorString);
+            return "user/settings";
+        }
+
+        return "redirect:/user/settings";
+    }
+
+    @PostMapping("/settings/changePwd")
+    public String changePwd(HttpSession session,
+                            @RequestParam("old-password") String oldPassword,
+                            @RequestParam("password1") String password1,
+                            @RequestParam("password2") String password2,
+                            HttpServletRequest request
+    ) {
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
+
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        UpdateUserSettingsAction.UpdateResult result = cusa.updatePassword(oldPassword, password1, password2);
+        if (result.updated == false) {
+            request.setAttribute("error", result.errorString);
+            return "user/settings";
+        }
+
+        return "redirect:/user/settings";
+    }
+
+    @PostMapping("/settings/changeAddress")
+    public String changeAddress(HttpSession session,
+                                @RequestParam("salutation") String salutation,
+                                @RequestParam("name") String name,
+                                @RequestParam("address") String address,
+                                HttpServletRequest request
+    ) {
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
+
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        UpdateUserSettingsAction.UpdateResult result = cusa.updateShippingInfo(salutation, name, address);
+        if (result.updated == false) {
+            request.setAttribute("error", result.errorString);
+            return "user/settings";
+        }
+
+        return "redirect:/user/settings";
+    }
+
+    @PostMapping("/settings/changePaymentInfo")
+    public String changePaymentInfo(HttpSession session,
+                                    @RequestParam("creditCardNumber") String creditCardNumber,
+                                    HttpServletRequest request
+    ) {
+        User user = userRepository.findById((long) session.getAttribute("userId")).get();
+
+        UpdateUserSettingsAction cusa = new UpdateUserSettingsAction(user, userRepository);
+        UpdateUserSettingsAction.UpdateResult result = cusa.updatePaymentInfo(creditCardNumber);
+        if (result.updated == false) {
+            request.setAttribute("error", result.errorString);
+            return "user/settings";
+        }
+
+        return "redirect:/user/settings";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/cronjob/AutoSupplierPayment.java

@@ -0,0 +1,77 @@
+package org.hso.ecommerce.controller.cronjob;
+
+import org.hso.ecommerce.action.booking.CreateBookingAction;
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.entities.booking.BookingReason;
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.hso.ecommerce.repos.booking.BookingAccountEntryRepository;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.hso.ecommerce.repos.supplier.SupplierRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.Calendar;
+
+@Component
+public class AutoSupplierPayment implements ICronjob {
+
+    @Autowired
+    private SupplierRepository supplierRepository = null;
+
+    @Autowired
+    private BookingAccountEntryRepository bookingAccountEntryRepository = null;
+
+    @Autowired
+    private BookingRepository bookingRepository = null;
+
+    @Override
+    public Calendar nextExecution(Calendar reference) {
+        if (reference.get(Calendar.HOUR_OF_DAY) >= 10) {
+            reference.add(Calendar.DAY_OF_MONTH, 1);
+        }
+        reference.set(Calendar.HOUR_OF_DAY, 10);
+        reference.set(Calendar.MINUTE, 0);
+        reference.set(Calendar.SECOND, 0);
+        reference.set(Calendar.MILLISECOND, 0);
+        return reference;
+    }
+
+    @Override
+    public Calendar previousExecution(Calendar reference) {
+        if (reference.get(Calendar.HOUR_OF_DAY) < 10) {
+            reference.add(Calendar.DAY_OF_MONTH, -1);
+        }
+        reference.set(Calendar.HOUR_OF_DAY, 10);
+        reference.set(Calendar.MINUTE, 0);
+        reference.set(Calendar.SECOND, 0);
+        reference.set(Calendar.MILLISECOND, 0);
+        return reference;
+    }
+
+    @Override
+    public void executeAt(Calendar time, CronjobController controller) {
+
+        for (Supplier supplier : supplierRepository.findAll()) {
+            int debts = bookingAccountEntryRepository
+                    .getBySupplier(supplier.id)
+                    .map(entry -> entry.newSumCent).orElse(0);
+
+            if (debts > 0) {
+                Booking booking = new CreateBookingAction(
+                        bookingAccountEntryRepository.getBySupplier(supplier.id).orElseGet(() -> BookingAccountEntry.newSupplier(supplier)),
+                        null,
+                        new BookingReason(supplier),
+                        debts
+                ).finish();
+
+                bookingRepository.save(booking);
+            }
+        }
+    }
+
+    @Override
+    public String getDisplayName() {
+        return "Supplier Auto Payment";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/cronjob/CronjobController.java

@@ -0,0 +1,201 @@
+package org.hso.ecommerce.controller.cronjob;
+
+import org.hso.ecommerce.entities.cron.BackgroundJob;
+import org.hso.ecommerce.repos.booking.BookingAccountEntryRepository;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.hso.ecommerce.repos.cronjob.BackgroundJobRepository;
+import org.hso.ecommerce.repos.dashboard.DashboardSummaryRepository;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.repos.supplier.ArticleOfferRepository;
+import org.hso.ecommerce.repos.supplier.SupplierOrderRepository;
+import org.hso.ecommerce.repos.supplier.SupplierRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.annotation.PostConstruct;
+import java.sql.Timestamp;
+import java.util.*;
+import java.util.Map.Entry;
+
+@Component
+@RequestMapping("intern/cronjobs")
+class CronjobController {
+    private static final Logger log = LoggerFactory.getLogger(CronjobController.class);
+
+    private Map<String, ICronjob> cronjobs;
+
+    @Autowired
+    private final BackgroundJobRepository cronjobRepository = null;
+
+    @Autowired
+    final ArticleRepository articleRepository = null;
+
+    @Autowired
+    final ArticleOfferRepository articleOfferRepository = null;
+
+    @Autowired
+    final CustomerOrderRepository customerOrderRepository = null;
+
+    @Autowired
+    final BookingRepository bookingRepository = null;
+
+    @Autowired
+    final BookingAccountEntryRepository bookingAccountEntryRepository = null;
+
+    @Autowired
+    final WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+    @Autowired
+    final DashboardSummaryRepository dashboardSummaryRepository = null;
+
+    @Autowired
+    final SupplierRepository supplierRepository = null;
+
+    @Autowired
+    final SupplierOrderRepository supplierOrderRepository = null;
+
+    @Autowired
+    final Reorder reorderJob = null;
+
+    @Autowired
+    final DashboardCronjob dashboardCronjob = null;
+
+    @Autowired
+    final AutoSupplierPayment autoSupplierPaymentJob = null;
+
+    @PostConstruct
+    public void init() {
+        cronjobs = getCronjobs();
+    }
+
+    private Map<String, ICronjob> getCronjobs() {
+        HashMap<String, ICronjob> map = new HashMap<>();
+
+        // Register all existing cronjobs
+        map.put(BackgroundJob.JOB_REORDER, reorderJob);
+        map.put(BackgroundJob.JOB_DASHBOARD, dashboardCronjob);
+        map.put(BackgroundJob.JOB_SUPPLIER_AUTO_PAYMENT, autoSupplierPaymentJob);
+
+        return Collections.unmodifiableMap(map);
+    }
+
+    private ScheduledCronjob getNextCronjob() {
+        Calendar currentTime = new GregorianCalendar();
+        Iterable<BackgroundJob> jobs = cronjobRepository.findAll();
+        HashMap<String, BackgroundJob> alreadyExecuted = new HashMap<>();
+        for (BackgroundJob job : jobs) {
+            alreadyExecuted.put(job.jobName, job);
+        }
+        ScheduledCronjob earliestJob = null;
+        for (Entry<String, ICronjob> entry : cronjobs.entrySet()) {
+            ScheduledCronjob resultingJob;
+            BackgroundJob dbEntry = alreadyExecuted.get(entry.getKey());
+            if (dbEntry != null) {
+                Calendar previousExecution = new GregorianCalendar();
+                previousExecution.setTimeInMillis(dbEntry.lastExecution.getTime());
+                Calendar followingSchedule = entry.getValue().nextExecution((Calendar) previousExecution.clone());
+                Calendar lastSchedule = entry.getValue().previousExecution((Calendar) currentTime.clone());
+                if (lastSchedule.getTimeInMillis() > followingSchedule.getTimeInMillis()) {
+                    // This happens, if more than one execution was missed.
+                    // In this case, run the job only once.
+                    followingSchedule = lastSchedule;
+                }
+                resultingJob = new ScheduledCronjob(followingSchedule, entry.getValue(), dbEntry);
+            } else {
+                // This cronjob has never been executed before.
+                Calendar lastScheduleTime = entry.getValue().previousExecution((Calendar) currentTime.clone());
+                BackgroundJob model = new BackgroundJob();
+                model.jobName = entry.getKey();
+                resultingJob = new ScheduledCronjob(lastScheduleTime, entry.getValue(), model);
+            }
+
+            // Look for the job with earliest executionTime - it will run next
+            if (earliestJob == null
+                    || resultingJob.executionTime.getTimeInMillis() < earliestJob.executionTime.getTimeInMillis()) {
+                earliestJob = resultingJob;
+            }
+        }
+        return earliestJob;
+    }
+
+    private void runCronjobExecutionLoop() {
+        Thread.currentThread().setName("Cronjob");
+        try {
+            while (true) {
+                ScheduledCronjob nextJob = getNextCronjob();
+                if (nextJob == null) {
+                    // In case there are no cronjobs
+                    return;
+                }
+                long waitingTime = nextJob.executionTime.getTimeInMillis() - System.currentTimeMillis();
+                if (waitingTime > 0) {
+                    Thread.sleep(waitingTime);
+                }
+
+                try {
+                    nextJob.cronjob.executeAt(nextJob.executionTime, this);
+                } catch (Throwable t) {
+                    log.error("Failed to execute cronjob " + nextJob.cronjob.getClass() + ":");
+                    t.printStackTrace();
+                }
+
+                nextJob.model.lastExecution = new Timestamp(nextJob.executionTime.getTimeInMillis());
+                cronjobRepository.save(nextJob.model);
+            }
+        } catch (InterruptedException e) {
+            log.error("The cronjob execution thread has been interrupted");
+        }
+    }
+
+    @PostConstruct
+    public void onPostConstruct() {
+        new Thread(this::runCronjobExecutionLoop).start();
+    }
+
+    class ManualCronjob {
+        public final String identifier;
+        public final String visibleName;
+
+        public ManualCronjob(String identifier, String visibleName) {
+            this.identifier = identifier;
+            this.visibleName = visibleName;
+        }
+    }
+
+    private List<ManualCronjob> listAllCronjobs() {
+        ArrayList<ManualCronjob> entries = new ArrayList<>();
+        for (Entry<String, ICronjob> job : cronjobs.entrySet()) {
+            entries.add(new ManualCronjob(job.getKey(), job.getValue().getDisplayName()));
+        }
+        return entries;
+    }
+
+    @GetMapping("/")
+    public String cronjobOverview(Model model) {
+        model.addAttribute("jobs", listAllCronjobs());
+        return "intern/cronjobs/index";
+    }
+
+    @PostMapping("/run/{identifier}")
+    public String runCronjob(Model model, @PathVariable("identifier") String identifier) {
+        ICronjob jobToExecute = cronjobs.get(identifier);
+        if (jobToExecute != null) {
+            jobToExecute.executeAt(new GregorianCalendar(), this);
+            model.addAttribute("info",
+                    String.format("Der Cronjob \"%s\" wurde ausgeführt.", jobToExecute.getDisplayName()));
+        } else {
+            model.addAttribute("error", "Der Cronjob konnte nicht gefunden werden.");
+        }
+        model.addAttribute("jobs", listAllCronjobs());
+        return "intern/cronjobs/index";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/cronjob/DashboardCronjob.java

@@ -0,0 +1,100 @@
+package org.hso.ecommerce.controller.cronjob;
+
+import org.hso.ecommerce.action.warehouse.CalculateWarehouseStatsAction;
+import org.hso.ecommerce.entities.dashboard.DashboardSummary;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.hso.ecommerce.repos.warehouse.SlotRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.sql.Timestamp;
+import java.util.Calendar;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Component
+public class DashboardCronjob implements ICronjob {
+
+    @Autowired
+    private SlotRepository slotRepository = null;
+
+    @Autowired
+    private UserRepository userRepository = null;
+
+    @Autowired
+    private WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+    @Autowired
+    private CustomerOrderRepository customerOrderRepository = null;
+
+    @Override
+    public Calendar nextExecution(Calendar reference) {
+        reference.add(Calendar.DAY_OF_MONTH, 1);
+        reference.set(Calendar.HOUR_OF_DAY, 0);
+        reference.set(Calendar.MINUTE, 0);
+        reference.set(Calendar.SECOND, 0);
+        reference.set(Calendar.MILLISECOND, 0);
+        return reference;
+    }
+
+    @Override
+    public Calendar previousExecution(Calendar reference) {
+        reference.set(Calendar.HOUR_OF_DAY, 0);
+        reference.set(Calendar.MINUTE, 0);
+        reference.set(Calendar.SECOND, 0);
+        reference.set(Calendar.MILLISECOND, 0);
+        return reference;
+    }
+
+    @Override
+    public void executeAt(Calendar time, CronjobController controller) {
+
+        Calendar oneDayBefore = (Calendar) time.clone();
+        oneDayBefore.add(Calendar.DAY_OF_MONTH, -1);
+
+        DashboardSummary dashboardSummary = new DashboardSummary();
+
+        List<WarehouseBookingPositionSlotEntry> entries = slotRepository.findAll().stream().map(
+                s -> warehouseBookingPositionSlotEntryRepository
+                        .getBySlotNum(s.slotNum)
+                        .orElseGet(() -> WarehouseBookingPositionSlotEntry.empty(null, s))
+        ).collect(Collectors.toList());
+        CalculateWarehouseStatsAction.WarehouseStats warehouseStats = new CalculateWarehouseStatsAction(entries).finish();
+
+        dashboardSummary.created = new java.sql.Date(time.getTimeInMillis());
+        dashboardSummary.todaysCustomersOrders = nullToZero(getSales(oneDayBefore, time));
+        dashboardSummary.todaysNewCustomers = nullToZero(getNewUsers(oneDayBefore, time));
+        dashboardSummary.todaysWarehouseCapacity = warehouseStats.efficiency;
+        dashboardSummary.currentWarehouseCapacity = warehouseStats.ratioUsedSlots;
+        dashboardSummary.todaysSalesCent = nullToZero(getTurnover(oneDayBefore, time));
+
+        controller.dashboardSummaryRepository.save(dashboardSummary);
+    }
+
+    @Override
+    public String getDisplayName() {
+        return "Dashboard refresh";
+    }
+
+    private Integer getSales(Calendar begin, Calendar end) {
+        return customerOrderRepository.countOrdersInTimespan(
+                new Timestamp(begin.getTimeInMillis()), new Timestamp(end.getTimeInMillis()));
+    }
+
+    private Integer getTurnover(Calendar begin, Calendar end) {
+        return customerOrderRepository.countTurnoverInTimespan(
+                new Timestamp(begin.getTimeInMillis()), new Timestamp(end.getTimeInMillis()));
+    }
+
+    private Integer getNewUsers(Calendar begin, Calendar end) {
+        return userRepository.countUsersInTimespan(
+                new Timestamp(begin.getTimeInMillis()), new Timestamp(end.getTimeInMillis()));
+    }
+
+    private int nullToZero(Integer input) {
+        return input == null ? 0 : input;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/cronjob/ICronjob.java

@@ -0,0 +1,38 @@
+package org.hso.ecommerce.controller.cronjob;
+
+
+import java.util.Calendar;
+
+interface ICronjob {
+    /**
+     * Calculate the earliest cronjob execution time that happens after the given reference time.
+     *
+     * @param reference Position in time to start searching. The implementor is allowed to modify the reference time.
+     * @return A new Calendar instance (or the same) containing the time for next execution.
+     */
+    Calendar nextExecution(Calendar reference);
+
+    /**
+     * Calculate the latest cronjob execution time that happens before or exactly at the given refernce time.
+     *
+     * @param reference Position in time to start searching. The implementor is allowed to modify the reference time.
+     * @return A new Calendar instance (or the same) containing the time of the last execution.
+     */
+    Calendar previousExecution(Calendar reference);
+
+    /**
+     * Execute this cronjob.
+     *
+     * @param time       The point in time this execution was scheduled. In case of a missed cronjob, the actual time of
+     *                   this call might be much later.
+     * @param controller Back-reference that allows to use repositories.
+     */
+    void executeAt(Calendar time, CronjobController controller);
+
+    /**
+     * Get a name for this cronjob, that can be presented to the user in the frontend.
+     *
+     * @return A german name of this cronjob.
+     */
+    String getDisplayName();
+}

web_backend/src/main/java/org/hso/ecommerce/controller/cronjob/Reorder.java

@@ -0,0 +1,164 @@
+package org.hso.ecommerce.controller.cronjob;
+
+import org.hso.ecommerce.action.booking.CreateBookingAction;
+import org.hso.ecommerce.action.cronjob.ReadSupplierDataAction;
+import org.hso.ecommerce.action.cronjob.ReorderAction;
+import org.hso.ecommerce.action.cronjob.UpdateOffersAction;
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.entities.booking.BookingReason;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+import org.springframework.stereotype.Component;
+
+import java.sql.Timestamp;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.List;
+
+@Component
+class Reorder implements ICronjob {
+    @Override
+    public String getDisplayName() {
+        return "Nachbestellung";
+    }
+
+    @Override
+    public Calendar nextExecution(Calendar reference) {
+        if (reference.get(Calendar.HOUR_OF_DAY) >= 8) {
+            reference.add(Calendar.DAY_OF_MONTH, 1);
+        }
+        reference.set(Calendar.HOUR_OF_DAY, 8);
+        reference.set(Calendar.MINUTE, 0);
+        reference.set(Calendar.SECOND, 0);
+        reference.set(Calendar.MILLISECOND, 0);
+        return reference;
+    }
+
+    @Override
+    public Calendar previousExecution(Calendar reference) {
+        if (reference.get(Calendar.HOUR_OF_DAY) < 8) {
+            reference.add(Calendar.DAY_OF_MONTH, -1);
+        }
+        reference.set(Calendar.HOUR_OF_DAY, 8);
+        reference.set(Calendar.MINUTE, 0);
+        reference.set(Calendar.SECOND, 0);
+        reference.set(Calendar.MILLISECOND, 0);
+        return reference;
+    }
+
+    /**
+     * Calculates the amount of ordered articles by customers for the given article type in the time between begin and
+     * end.
+     *
+     * @param article The article to search orders for.
+     * @param begin   The start time for the search (included)
+     * @param end     The end time for the search (excluded)
+     * @return The number of articles that were ordered by customers in the given range.
+     */
+    private Integer getOrderedAmounts(Article article, Calendar begin, Calendar end, CronjobController controller) {
+        return controller.customerOrderRepository.countOrdersOfArticleInTimespan(
+                article.id,
+                new Timestamp(begin.getTimeInMillis()), new Timestamp(end.getTimeInMillis()));
+    }
+
+    /**
+     * Calculates the amount of ordered articles by customers for the given article type in the three days before the
+     * given reference time. The return-array contains 3 fields: Index 0: Orders 72 to 48 hours ago; Index 1: Orders 48
+     * to 24 hours ago; Index 2: Orders 24 to 0 hours ago.
+     *
+     * @param article The article for which the customer orders are checked.
+     * @param time    The reference time to use for calculation of the last orders.
+     * @return A 3-element array containing the orders of the last three days.
+     */
+    private Integer[] getOrderedAmounts(Article article, Calendar time, CronjobController controller) {
+        Calendar oneDayBefore = (Calendar) time.clone();
+        oneDayBefore.add(Calendar.DAY_OF_MONTH, -1);
+        Calendar twoDaysBefore = (Calendar) time.clone();
+        twoDaysBefore.add(Calendar.DAY_OF_MONTH, -2);
+        Calendar threeDaysBefore = (Calendar) time.clone();
+        threeDaysBefore.add(Calendar.DAY_OF_MONTH, -3);
+
+        return new Integer[]{ //
+                getOrderedAmounts(article, threeDaysBefore, twoDaysBefore, controller), //
+                getOrderedAmounts(article, twoDaysBefore, oneDayBefore, controller), //
+                getOrderedAmounts(article, oneDayBefore, time, controller), //
+        };
+    }
+
+    private HashMap<ReadSupplierDataAction.ArticleIdentifier, ArticleOffer> mapArticleOffers(List<ArticleOffer> articleOffers) {
+        HashMap<ReadSupplierDataAction.ArticleIdentifier, ArticleOffer> map = new HashMap<>();
+        for (ArticleOffer articleOffer : articleOffers) {
+            ReadSupplierDataAction.ArticleIdentifier identifier = new ReadSupplierDataAction.ArticleIdentifier(articleOffer.manufacturer, articleOffer.articleNumber);
+            map.put(identifier, articleOffer);
+        }
+        return map;
+    }
+
+    @Override
+    public void executeAt(Calendar time, CronjobController controller) {
+        List<Supplier> suppliers = controller.supplierRepository.findAll();
+        ReadSupplierDataAction.Result supplierData = new ReadSupplierDataAction(suppliers).finish();
+
+        // Save the new offers in the database
+        List<ArticleOffer> allOffers = controller.articleOfferRepository.findAll();
+        allOffers = new UpdateOffersAction(allOffers, supplierData.cheapestOffer).finish();
+        controller.articleOfferRepository.saveAll(allOffers);
+
+        HashMap<ReadSupplierDataAction.ArticleIdentifier, ArticleOffer> mappedOffers = mapArticleOffers(allOffers);
+
+        // Reorder
+        List<Article> allArticles = controller.articleRepository.findAll();
+        for (Article article : allArticles) {
+            Integer[] orderedAmounts = getOrderedAmounts(article, time, controller);
+
+            Integer undeliveredReorders = controller.supplierOrderRepository
+                    .countUndeliveredReorders(article.related.articleNumber);
+
+            int amountInStock = controller.warehouseBookingPositionSlotEntryRepository
+                    .getByArticle(article.id)
+                    .stream()
+                    .mapToInt(e -> e.newSumSlot)
+                    .sum();
+
+            ReorderAction action = new ReorderAction(article, orderedAmounts,
+                    undeliveredReorders,
+                    amountInStock,
+                    supplierData.cheapestOffer, mappedOffers);
+            SupplierOrder order = action.finish();
+            if (order != null) {
+                controller.supplierOrderRepository.save(order);
+
+                // Create bookings for this order
+                int netPrice = order.totalPriceNet;
+                int vatPercent = order.ordered.vatPercent;
+                int vatAmount = netPrice * vatPercent / 100;
+                int grossPrice = netPrice + vatAmount;
+
+                // Obligation towards the supplier
+                BookingAccountEntry mainAccount = controller.bookingAccountEntryRepository.getByMain()
+                        .orElseGet(BookingAccountEntry::newMain);
+                BookingAccountEntry supplierAccount = controller.bookingAccountEntryRepository
+                        .getBySupplier(order.supplier.id)
+                        .orElseGet(() -> BookingAccountEntry.newSupplier(order.supplier));
+                BookingReason obligationReason = new BookingReason(order);
+                Booking obligationBooking = new CreateBookingAction(mainAccount,
+                        supplierAccount,
+                        obligationReason,
+                        grossPrice).finish();
+                controller.bookingRepository.save(obligationBooking);
+
+                // Input Tax
+                BookingAccountEntry vatAccount = controller.bookingAccountEntryRepository.getByVat()
+                        .orElseGet(BookingAccountEntry::newVat);
+                mainAccount = controller.bookingAccountEntryRepository.getByMain().get();
+                BookingReason inputTaxReason = new BookingReason(order);
+                Booking inputTaxBooking = new CreateBookingAction(vatAccount, mainAccount, inputTaxReason, vatAmount)
+                        .finish();
+                controller.bookingRepository.save(inputTaxBooking);
+            }
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/cronjob/ScheduledCronjob.java

@@ -0,0 +1,17 @@
+package org.hso.ecommerce.controller.cronjob;
+
+import org.hso.ecommerce.entities.cron.BackgroundJob;
+
+import java.util.Calendar;
+
+class ScheduledCronjob {
+    public final Calendar executionTime;
+    public final ICronjob cronjob;
+    public final BackgroundJob model;
+
+    public ScheduledCronjob(Calendar executionTime, ICronjob cronjob, BackgroundJob model) {
+        this.executionTime = executionTime;
+        this.cronjob = cronjob;
+        this.model = model;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/DashboardController.java

@@ -0,0 +1,25 @@
+package org.hso.ecommerce.controller.intern;
+
+import org.hso.ecommerce.entities.dashboard.DashboardSummary;
+import org.hso.ecommerce.repos.dashboard.DashboardSummaryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+public class DashboardController {
+
+    @Autowired
+    private DashboardSummaryRepository dashboardSummaryRepository;
+
+    @GetMapping("/intern/dashboardsummary")
+    public List<DashboardSummary> getDashboardEntries()
+    {
+        List<DashboardSummary> inTimespan = dashboardSummaryRepository.findInTimespan(PageRequest.of(0, 7) );
+        return inTimespan;
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/InternArticleController.java

@@ -0,0 +1,294 @@
+package org.hso.ecommerce.controller.intern;
+
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.shop.Category;
+import org.hso.ecommerce.entities.shop.Image;
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.shop.CategoryRepository;
+import org.hso.ecommerce.repos.shop.ImageRepository;
+import org.hso.ecommerce.repos.shop.OffersRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.util.DigestUtils;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.servlet.view.RedirectView;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+@Controller
+@RequestMapping("intern/articles")
+public class InternArticleController {
+	@Autowired
+	private final ArticleRepository articleRepository = null;
+
+	@Autowired
+	private final WarehouseBookingPositionSlotEntryRepository warehouseEntryRepository = null;
+
+	@Autowired
+	private final CategoryRepository categoryRepository = null;
+
+	@Autowired
+	private final OffersRepository offersRepository = null;
+
+	@Autowired
+	private final ImageRepository imageRepository = null;
+
+	@GetMapping("/")
+	public String internListedArticles(Model model) {
+
+		List<UImodelArticles> totals = new ArrayList<UImodelArticles>();
+
+		for (Article article : articleRepository.findAll()) {
+			UImodelArticles tmp = new UImodelArticles();
+			tmp.addListedArticle(article, warehouseEntryRepository
+					.getByArticle(article.id)
+					.stream()
+					.mapToInt(e -> e.newSumSlot)
+					.sum());
+			totals.add(tmp);
+		}
+
+		model.addAttribute("ListedArticles", totals);
+		return "intern/listedArticles/index";
+	}
+
+	@GetMapping("/{id}")
+	public String internListedArticlesId(Model model, @PathVariable String id) {
+		long articleId = Long.parseLong(id);
+		UImodelArticle total = new UImodelArticle();
+		total.addArticle(
+				articleRepository.findById(articleId).get(),
+				warehouseEntryRepository.getByArticle(articleId)
+						.stream()
+						.mapToInt(e -> e.newSumSlot)
+						.sum());
+
+		model.addAttribute("ArticleID", total);
+		return "intern/listedArticles/id";
+	}
+
+	@PostMapping("/{id}/saveChanges")
+	public RedirectView saveChanges(@PathVariable(required = true) int id,
+			@RequestParam(value = "title", required = true) String title,
+			@RequestParam(value = "description", required = true) String description,
+			@RequestParam(value = "units-per-slot", required = true) String warehouseUnitsPerSlot,
+			@RequestParam(value = "priceNet", required = true) String pricenetto,
+			@RequestParam(value = "reorderMaxPrice", required = true) String reorderMaxPrice,
+			@RequestParam(value = "autobuy", required = true) Boolean shouldReorder,
+			@RequestParam(value = "categorie", required = true) String categories,
+			@RequestParam(value = "img", required = true) MultipartFile imgFile) {
+
+		Article tmpArticle = articleRepository.findArticleById(id); // get the old article
+
+		String[] separatedCategories = categories.split("\n");
+
+		tmpArticle.categories.clear();
+
+		// loop through all categories strings and create a new category if a new one;
+		// also adds the categories to the article
+		for (String category : separatedCategories) {
+			tmpArticle.categories.add(categoryRepository.findCategoryByName(category.trim())
+					.orElseGet(() -> new Category(category.trim())));
+		}
+
+		tmpArticle.shouldReorder = shouldReorder;
+		tmpArticle.reorderMaxPrice = (int) (Float.parseFloat(reorderMaxPrice) * 100);
+		tmpArticle.shopPricePerUnitNetCent = (int) (Float.parseFloat(pricenetto) * 100);
+		tmpArticle.warehouseUnitsPerSlot = Integer.parseInt(warehouseUnitsPerSlot);
+		tmpArticle.title = title;
+		updateImage(tmpArticle, imgFile);
+		tmpArticle.description = description;
+
+		articleRepository.save(tmpArticle); // save updated article
+		return new RedirectView("../"); // return to overview page
+
+	}
+
+	@PostMapping("/addArticle/{id}")
+	public RedirectView addArticle(@PathVariable(required = true) String id) {
+		// article is not already listed, create new one
+		long offeredArticleID = Long.parseLong(id);
+
+		Article tmpArticle = new Article();
+
+		ArticleOffer offeredArticle = offersRepository.findById(offeredArticleID).get();
+
+		// Check for duplicates
+		Optional<Article> related = articleRepository.findArticleByArticleOffer(offeredArticle);
+		if (related.isPresent()) {
+			return new RedirectView("../" + related.get().id);
+		}
+
+		// set default values
+		tmpArticle.description = "";
+		tmpArticle.reorderMaxPrice = 0;
+		tmpArticle.shopPricePerUnitNetCent = offeredArticle.pricePerUnitNet;
+		tmpArticle.shouldReorder = false;
+		tmpArticle.title = offeredArticle.title;
+		tmpArticle.warehouseUnitsPerSlot = 1;
+		setDefaultImage(tmpArticle);
+		tmpArticle.related = offeredArticle;
+		articleRepository.save(tmpArticle); // save new article
+
+		// return to edit article page
+		return new RedirectView("../" + articleRepository.findArticleIDByRelatedID(offeredArticleID).get());
+	}
+
+	private void setDefaultImage(Article article) {
+		String defaultImagePath = "./data/img/no_product_img.jpg"; // path + name of default img
+		Optional<Integer> imageID = imageRepository.findImageIDByPath(defaultImagePath); // get default img
+
+		if (imageID.isPresent()) {
+			// default img is in DB
+			article.image = imageRepository.findImageById(imageID.get()); // set default img to new article
+		} else {
+			// default img is not in DB
+			File tmpFile = new File(defaultImagePath);
+			// test if default img file exits
+			if (!tmpFile.exists()) {
+				// fallback if the file not exists
+				// create new file
+				BufferedImage bufferedImage = new BufferedImage(422, 428, BufferedImage.TYPE_INT_RGB);
+				try {
+					ImageIO.write(bufferedImage, "jpg", new File(defaultImagePath)); // save new file on disk
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+			Image defaultImage = new Image();
+			defaultImage.path = defaultImagePath; // set new file to default img
+			imageRepository.save(defaultImage); // save default img
+			article.image = defaultImage; // set default img to new article
+		}
+	}
+
+	private void updateImage(Article article, MultipartFile imgFile) {
+		// check if a file is present
+		if (imgFile.getSize() > 0) {
+			try {
+				// get file name based on MD5 hash
+				String fileName = DigestUtils.md5DigestAsHex(imgFile.getBytes()) + ".jpg";
+				// check if img is already in system
+				Optional<Integer> imageID = imageRepository.findImageIDByPath("./data/img/" + fileName);
+				if (imageID.isPresent()) {
+					article.image = imageRepository.findImageById(imageID.get()); // add existing img to article
+				} else {
+
+					Path targetPath = Paths.get("./data/img/");
+					if (Files.notExists(targetPath)) {
+						Files.createDirectories(targetPath);
+					}
+
+					// write new img file to disk
+					Files.newOutputStream(Paths.get(targetPath.toString(), fileName)).write(imgFile.getBytes());
+					// create new img
+					Image newImage = new Image();
+					newImage.path = "./data/img/" + fileName; // set new file to new img
+					imageRepository.save(newImage); // save new img
+					article.image = newImage; // set new img to article
+				}
+			} catch (IOException e) {
+				e.printStackTrace();
+				setDefaultImage(article); // if upload failed, reset to default img
+			}
+		}
+	}
+
+	public static class UImodelArticles {
+
+		public String imgPath;
+		public String title;
+		public String price;
+		public String priceNet;
+		public String categorie;
+		public int stock;
+		public long offerID;
+		public long id;
+
+		void addListedArticle(Article article, int stock) {
+
+			if (article.image != null) {
+				this.imgPath = article.image.path;
+			}
+			this.title = article.title;
+			this.priceNet = String.format("%.2f", ((float) article.shopPricePerUnitNetCent / 100));
+			this.price = String.format("%.2f", ((float) article.getPriceGross() / 100));
+
+			StringBuilder result = new StringBuilder();
+
+			for (Category temp : article.categories) {
+				result.append(temp.name + " ");
+			}
+			this.categorie = result.toString();
+
+			this.stock = stock;
+			this.offerID = article.related.id;
+			this.id = article.id;
+		}
+	}
+
+	public static class UImodelArticle {
+
+		public String imgPath;
+		public String title;
+		public String price;
+		public String priceNet;
+		public String reorderMaxPrice;
+		public String categorie;
+		public int stock;
+		public long offerID;
+		public long id;
+		public boolean shouldReorder;
+		public String warehouseUnitsPerSlot;
+		public String description;
+		public int vatPercent;
+
+		public String getCategorie() {
+			return categorie;
+		}
+
+		public String getDescription() {
+			return description;
+		}
+
+		void addArticle(Article article, int stock) {
+			if (article.image != null) {
+				this.imgPath = article.image.path;
+			}
+			this.title = article.title;
+			this.priceNet = String.format("%.2f", ((float) article.shopPricePerUnitNetCent / 100));
+			this.price = String.format("%.2f", ((float) article.getPriceGross() / 100));
+
+			StringBuilder result = new StringBuilder();
+
+			for (Category temp : article.categories) {
+				result.append(temp.name);
+				result.append("\n");
+			}
+			this.categorie = result.toString();
+
+			this.stock = stock;
+			this.offerID = article.related.id;
+			this.id = article.id;
+			this.reorderMaxPrice = String.format("%.2f", ((float) article.reorderMaxPrice / 100));
+			this.shouldReorder = article.shouldReorder;
+			this.warehouseUnitsPerSlot = String.valueOf(article.warehouseUnitsPerSlot);
+			this.description = article.description;
+			this.vatPercent = article.related.vatPercent;
+		}
+	}
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/InternIndexController.java

@@ -0,0 +1,34 @@
+package org.hso.ecommerce.controller.intern;
+
+import java.util.Optional;
+
+import org.hso.ecommerce.controller.intern.accounting.AccountingController;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.repos.booking.BookingAccountEntryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/intern")
+public class InternIndexController {
+
+    @Autowired
+    private final BookingAccountEntryRepository bookingAccountEntryRepository = null;
+
+    @GetMapping("/")
+    public String intern(Model model) {
+        Optional<BookingAccountEntry> mainAccount = bookingAccountEntryRepository.getByMain();
+        int mainAccountBalance = mainAccount.map(entry -> entry.newSumCent).orElse(0);
+        Optional<BookingAccountEntry> vatAccount = bookingAccountEntryRepository.getByVat();
+        int vatAccountBalance = vatAccount.map(entry -> entry.newSumCent).orElse(0);
+
+        model.addAttribute("mainAccountBalance", AccountingController.fmtEuro(mainAccountBalance));
+        model.addAttribute("vatAccountBalance", AccountingController.fmtEuro(vatAccountBalance));
+
+        return "intern/index";
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/WarehouseController.java

@@ -0,0 +1,27 @@
+package org.hso.ecommerce.controller.intern;
+
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpServletRequest;
+
+@Controller
+@RequestMapping("/intern/warehouse/")
+public class WarehouseController {
+
+    @Autowired
+    private final WarehouseBookingRepository warehouseBookingRepository = null;
+
+    @GetMapping("/")
+    public String accountingWarehouse(
+            Model model,
+            HttpServletRequest request
+    ) {
+        model.addAttribute("bookings", warehouseBookingRepository.findAllDesc());
+        return "intern/warehouse/index";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/accounting/AccountingController.java

@@ -0,0 +1,229 @@
+package org.hso.ecommerce.controller.intern.accounting;
+
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.entities.booking.BookingReason;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+@Controller
+public class AccountingController {
+
+    @Autowired
+    private BookingRepository bookingRepository = null;
+
+    /**
+     * A description used to render the html template for the overview of all bookings
+     */
+    static class TemplateBooking {
+        public String datetime;
+        public String amount;
+        public String source;
+        public String sourceAddr;
+        public String sourceBalance;
+        public String destination;
+        public String destinationAddr;
+        public String destinationBalance;
+        public String reason;
+        public String reference;
+        public String referenceAddr;
+    }
+
+    /**
+     * A description used to render the html template for bookings on a specific account
+     */
+    public static class ShortTemplateBooking {
+        public String datetime;
+        public String amount;
+        public String source;
+        public String sourceAddr;
+        public String balance;
+        public String reason;
+        public String reference;
+        public String referenceAddr;
+    }
+
+    public static class ShortTemplateBookingResult {
+        public final String balance;
+        public final List<ShortTemplateBooking> bookings;
+
+        public ShortTemplateBookingResult(String balance, List<ShortTemplateBooking> bookings) {
+            this.balance = balance;
+            this.bookings = bookings;
+        }
+    }
+
+    /**
+     * Used to check which side of the booking (source or destination) is the account we are currently looking at.
+     */
+    public interface AccountFilter {
+        boolean matches(BookingAccountEntry account);
+    }
+
+    /**
+     * Renders template information for the bookings of one specific account.
+     *
+     * @param bookings       The (already fetched) booking entities to display
+     * @param currentAccount A filter matching the account that is to be displayed
+     * @return A collection result containing the final balance and all booking entries.
+     */
+    public ShortTemplateBookingResult buildShortTemplate(List<Booking> bookings, AccountFilter currentAccount) {
+        List<ShortTemplateBooking> templateBookings = new ArrayList<>();
+        for (Booking booking : bookings) {
+            ShortTemplateBooking tb = new ShortTemplateBooking();
+            tb.datetime = new SimpleDateFormat("dd.MM.yyyy HH:mm").format(booking.created);
+            tb.reason = booking.reason.comment;
+            tb.reference = describeReference(booking.reason);
+            tb.referenceAddr = linkToReference(booking.reason);
+            if (booking.destination != null && currentAccount.matches(booking.destination)) {
+                // Money was transferred onto the account we are looking at.
+                tb.amount = fmtEuro(booking.amountCent);
+                if (booking.source != null) {
+                    tb.source = describeAccount(booking.source);
+                    tb.sourceAddr = linkAddrOfAccount(booking.source);
+                } else {
+                    tb.source = "-";
+                    tb.sourceAddr = null;
+                }
+                tb.balance = fmtEuro(booking.destination.newSumCent);
+            } else if (booking.source != null && currentAccount.matches(booking.source)) {
+                // Money was transferred away from the account we are looking at.
+                tb.amount = fmtEuro(-booking.amountCent); // Negative because of the transfer away
+                if (booking.destination != null) {
+                    tb.source = describeAccount(booking.destination); // 'source' means 'the other account' in this case
+                    tb.sourceAddr = linkAddrOfAccount(booking.destination);
+                } else {
+                    tb.source = "-";
+                    tb.sourceAddr = null;
+                }
+                tb.balance = fmtEuro(booking.source.newSumCent);
+            } else {
+                throw new RuntimeException(
+                        "This booking should not appear in this list, because neither source nor destination is the account we are looking at.");
+            }
+            templateBookings.add(tb);
+        }
+
+        String balance = templateBookings.isEmpty() ? fmtEuro(0) : templateBookings.get(0).balance;
+        return new ShortTemplateBookingResult(balance, templateBookings);
+    }
+
+    public static String fmtEuro(long amountCent) {
+        return String.format("%.2f EUR", amountCent / 100.0);
+    }
+
+    private String describeAccount(BookingAccountEntry account) {
+        if (account.isMainAccount) {
+            return "Hauptkonto";
+        } else if (account.isVATAccount) {
+            return "Mehrwertsteuer";
+        } else if (account.supplierAccount != null) {
+            return "Lieferant " + account.supplierAccount.id;
+        } else if (account.userAccount != null) {
+            return "Kunde " + account.userAccount.id;
+        } else {
+            return "- unbekannt -";
+        }
+    }
+
+    private String linkAddrOfAccount(BookingAccountEntry account) {
+        if (account.isMainAccount) {
+            return "/intern/accounting/main";
+        } else if (account.isVATAccount) {
+            return "/intern/accounting/vat";
+        } else if (account.supplierAccount != null) {
+            return "/intern/suppliers/" + account.supplierAccount.id;
+        } else if (account.userAccount != null) {
+            return "/intern/customers/" + account.userAccount.id;
+        } else {
+            return null;
+        }
+    }
+
+    private String describeReference(BookingReason reason) {
+        if (reason.customerOrder != null) {
+            return reason.customerOrder.id + "";
+        } else if (reason.customerPayment != null) {
+            return "Bezahlung mit Kreditkarte " + reason.customerPayment.payment.creditCardNumber;
+        } else if (reason.supplierOrder != null) {
+            return "Lieferanten-Bestellung " + reason.supplierOrder.supplier.name;
+        } else if (reason.supplierPayment != null) {
+            return "Lieferanten-Zahlung " + reason.supplierPayment.name;
+        } else {
+            return "-";
+        }
+    }
+
+    private String linkToReference(BookingReason reason) {
+        if (reason.customerOrder != null) {
+            return "/intern/customerOrders/" + reason.customerOrder.id;
+        } else if (reason.supplierPayment != null) {
+            return "/intern/suppliers/#q=" + reason.supplierPayment.id;
+        } else if (reason.supplierOrder != null) {
+            return "/intern/supplierOrders/#q=" + reason.supplierOrder.id;
+        } else {
+            return null;
+        }
+    }
+
+    @GetMapping("/intern/accounting/")
+    public String accounting(Model model) {
+        List<Booking> bookings = bookingRepository.allBookingsReverseChronologically();
+        List<TemplateBooking> templateBookings = new ArrayList<>();
+        for (Booking booking : bookings) {
+            TemplateBooking tb = new TemplateBooking();
+            tb.datetime = new SimpleDateFormat("dd.MM.yyyy HH:mm").format(booking.created);
+            tb.amount = fmtEuro(booking.amountCent);
+            if (booking.source != null) {
+                tb.source = describeAccount(booking.source);
+                tb.sourceAddr = linkAddrOfAccount(booking.source);
+                tb.sourceBalance = fmtEuro(booking.source.newSumCent);
+            } else {
+                tb.source = "-";
+                tb.sourceAddr = null;
+                tb.sourceBalance = "-";
+            }
+            if (booking.destination != null) {
+                tb.destination = describeAccount(booking.destination);
+                tb.destinationAddr = linkAddrOfAccount(booking.destination);
+                tb.destinationBalance = fmtEuro(booking.destination.newSumCent);
+            } else {
+                tb.destination = "-";
+                tb.destinationAddr = null;
+                tb.destinationBalance = "-";
+            }
+            tb.reason = booking.reason.comment;
+            tb.reference = describeReference(booking.reason);
+            tb.referenceAddr = linkToReference(booking.reason);
+            templateBookings.add(tb);
+        }
+
+        model.addAttribute("bookings", templateBookings);
+        return "intern/accounting/index";
+    }
+
+    @GetMapping("/intern/accounting/vat")
+    public String accountingVat(Model model) {
+        List<Booking> bookings = bookingRepository.vatBookingsReverseChronologically();
+        ShortTemplateBookingResult result = buildShortTemplate(bookings, account -> account.isVATAccount);
+        model.addAttribute("balance", result.balance);
+        model.addAttribute("bookings", result.bookings);
+        return "intern/accounting/vat";
+    }
+
+    @GetMapping("/intern/accounting/main")
+    public String accountingIntern(Model model) {
+        List<Booking> bookings = bookingRepository.mainBookingsReverseChronologically();
+        ShortTemplateBookingResult result = buildShortTemplate(bookings, account -> account.isMainAccount);
+        model.addAttribute("balance", result.balance);
+        model.addAttribute("bookings", result.bookings);
+        return "intern/accounting/main";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/accounting/ManualAccountingController.java

@@ -0,0 +1,270 @@
+package org.hso.ecommerce.controller.intern.accounting;
+
+import java.util.Optional;
+
+import org.hso.ecommerce.action.booking.CreateBookingAction;
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.entities.booking.BookingReason;
+import org.hso.ecommerce.repos.booking.BookingAccountEntryRepository;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.hso.ecommerce.repos.supplier.SupplierRepository;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+
+@Controller
+public class ManualAccountingController {
+
+    @Autowired
+    final BookingRepository bookingRepository = null;
+
+    @Autowired
+    final BookingAccountEntryRepository bookingAccountEntryRepository = null;
+
+    @Autowired
+    final UserRepository userRepository = null;
+
+    @Autowired
+    final SupplierRepository supplierRepository = null;
+
+    /**
+     * Collection for the form values used to create a manual booking
+     */
+    public static class ManualAccounting {
+        String amount;
+        String source;
+        String sourceCustomer;
+        String sourceSupplier;
+        String destination;
+        String destinationCustomer;
+        String destinationSupplier;
+        String reason;
+        String reasonText;
+
+        /**
+         * Default constructor with default values for the form
+         */
+        public ManualAccounting() {
+            amount = "0.00";
+            reason = "Manual";
+        }
+
+        public String getAmount() {
+            return amount;
+        }
+
+        public void setAmount(String amount) {
+            this.amount = amount;
+        }
+
+        public String getSource() {
+            return source;
+        }
+
+        public void setSource(String source) {
+            this.source = source;
+        }
+
+        public String getSourceCustomer() {
+            return sourceCustomer;
+        }
+
+        public void setSourceCustomer(String sourceCustomer) {
+            this.sourceCustomer = sourceCustomer;
+        }
+
+        public String getSourceSupplier() {
+            return sourceSupplier;
+        }
+
+        public void setSourceSupplier(String sourceSupplier) {
+            this.sourceSupplier = sourceSupplier;
+        }
+
+        public String getDestination() {
+            return destination;
+        }
+
+        public void setDestination(String destination) {
+            this.destination = destination;
+        }
+
+        public String getDestinationCustomer() {
+            return destinationCustomer;
+        }
+
+        public void setDestinationCustomer(String destinationCustomer) {
+            this.destinationCustomer = destinationCustomer;
+        }
+
+        public String getDestinationSupplier() {
+            return destinationSupplier;
+        }
+
+        public void setDestinationSupplier(String destinationSupplier) {
+            this.destinationSupplier = destinationSupplier;
+        }
+
+        public String getReason() {
+            return reason;
+        }
+
+        public void setReason(String reason) {
+            this.reason = reason;
+        }
+
+        public String getReasonText() {
+            return reasonText;
+        }
+
+        public void setReasonText(String reasonText) {
+            this.reasonText = reasonText;
+        }
+    }
+
+    /**
+     * An exception to represent errors that can be shown to the user
+     */
+    public static class InvalidFormDataException extends Exception {
+        public InvalidFormDataException(String msg) {
+            super(msg);
+        }
+
+        private static final long serialVersionUID = 1L;
+    }
+
+    private boolean sameAccountBothSides(ManualAccounting formData) {
+        // No need to check for NumberFormatException because the numbers were already parsed before.
+        if (!formData.getSource().equals(formData.getDestination())) {
+            return false;
+        } else if (formData.getSource().equals("Cust")
+                && Long.parseLong(formData.getSourceCustomer()) != Long.parseLong(formData.getDestinationCustomer())) {
+            return false;
+        } else if (formData.getSource().equals("Sup")
+                && Long.parseLong(formData.getSourceSupplier()) != Long.parseLong(formData.getDestinationSupplier())) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    public Booking createBooking(ManualAccounting formData) throws InvalidFormDataException {
+        if (formData.getSource() == null) {
+            throw new InvalidFormDataException("Bitte wählen Sie ein Quellkonto aus.");
+        } else if (formData.getDestination() == null) {
+            throw new InvalidFormDataException("Bitte wählen Sie ein Zielkonto aus.");
+        }
+        BookingAccountEntry source = getAccountFromFormData(formData.getSource(), formData.getSourceCustomer(),
+                formData.getSourceSupplier());
+        BookingAccountEntry destination = getAccountFromFormData(formData.getDestination(),
+                formData.getDestinationCustomer(), formData.getDestinationSupplier());
+
+        if (sameAccountBothSides(formData)) {
+            throw new InvalidFormDataException("Quell- und Zielkonto dürfen nicht das selbe sein.");
+        }
+
+        double doubleAmount;
+        try {
+            doubleAmount = Double.parseDouble(formData.amount);
+        } catch (NumberFormatException e) {
+            throw new InvalidFormDataException("Der angegebene Betrag ist ungültig.");
+        }
+        int amountCent = (int) Math.round(doubleAmount * 100);
+
+        BookingReason reason = new BookingReason();
+        if (formData.getReason().equals("Start")) {
+            reason.isStartBooking = true;
+        } else if (formData.getReason().equals("Manual")) {
+            reason.isManuel = true;
+        } else {
+            throw new RuntimeException("Invalid form value for the booking reason: " + formData.getReason());
+        }
+        reason.comment = formData.reasonText;
+
+        CreateBookingAction action = new CreateBookingAction(source, destination, reason, amountCent);
+        return action.finish();
+    }
+
+    /**
+     * Retrieve the corresponding account based on user-input
+     *
+     * @param account  The chosen value on the radio buttons
+     * @param customer The given customer id from the corresponding text field
+     * @param supplier the given supplier id from the corresponding text field
+     * @return The account entry that can be used to create the new booking
+     * @throws InvalidFormDataException If the user provided incorrect data in any way
+     */
+    private BookingAccountEntry getAccountFromFormData(String account, String customer, String supplier)
+            throws InvalidFormDataException {
+        if (account.equals("None")) {
+            return null;
+        } else if (account.equals("Main")) {
+            return bookingAccountEntryRepository.getByMain().orElseGet(BookingAccountEntry::newMain);
+        } else if (account.equals("Vat")) {
+            return bookingAccountEntryRepository.getByVat().orElseGet(BookingAccountEntry::newVat);
+        } else if (account.equals("Cust")) {
+            long userId;
+            try {
+                userId = Long.parseLong(customer);
+            } catch (NumberFormatException e) {
+                throw new InvalidFormDataException("Die angegebene Kunden-Nr. ist ungültig.");
+            }
+            Optional<BookingAccountEntry> bookingAccount = bookingAccountEntryRepository.getByUser(userId);
+            if (!bookingAccount.isPresent()) {
+                bookingAccount = userRepository.findById(userId).map((user) -> BookingAccountEntry.newUser(user));
+            }
+            if (bookingAccount.isPresent()) {
+                return bookingAccount.get();
+            } else {
+                throw new InvalidFormDataException("Der Kunde Nr. " + userId + " konnte nicht gefunden werden.");
+            }
+        } else if (account.equals("Sup")) {
+            long supplierId;
+            try {
+                supplierId = Long.parseLong(supplier);
+            } catch (NumberFormatException e) {
+                throw new InvalidFormDataException("Die angegebene Lieferanten-Nr. ist ungültig.");
+            }
+            Optional<BookingAccountEntry> bookingAccount = bookingAccountEntryRepository.getBySupplier(supplierId);
+            if (!bookingAccount.isPresent()) {
+                bookingAccount = supplierRepository.findById(supplierId)
+                        .map((sup) -> BookingAccountEntry.newSupplier(sup));
+            }
+            if (bookingAccount.isPresent()) {
+                return bookingAccount.get();
+            } else {
+                throw new InvalidFormDataException(
+                        "Der Lieferant Nr. " + supplierId + " konnte nicht gefunden werden.");
+            }
+        } else {
+            throw new RuntimeException("Invalid form value for an account: " + account);
+        }
+    }
+
+    @GetMapping("/intern/accounting/addManual")
+    public String accountingAddManual(Model model) {
+        model.addAttribute("form_vals", new ManualAccounting());
+        return "intern/accounting/addManual";
+    }
+
+    @PostMapping("/intern/accounting/addManual")
+    public String accountingAddManualSubmit(Model model, @ModelAttribute ManualAccounting formData) {
+        Booking booking;
+        try {
+            booking = createBooking(formData);
+            bookingRepository.save(booking);
+            model.addAttribute("info", "Die Buchung wurde erfolgreich erstellt.");
+            model.addAttribute("form_vals", new ManualAccounting()); // Reply with empty form on success
+        } catch (InvalidFormDataException e) {
+            model.addAttribute("error", e.getMessage());
+            model.addAttribute("form_vals", formData);
+        }
+        return "intern/accounting/addManual";
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/customers/CustomerOrderController.java

@@ -0,0 +1,71 @@
+package org.hso.ecommerce.controller.intern.customers;
+
+import org.hso.ecommerce.action.user.CreateDeliveryData;
+import org.hso.ecommerce.api.RestServiceForDelivery;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.uimodel.DeliveryData;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Controller
+@RequestMapping("intern/customerOrders")
+public class CustomerOrderController {
+
+    @Autowired
+    private final CustomerOrderRepository customerOrderRepository = null;
+    @Autowired
+    private final RestServiceForDelivery restServiceForDelivery = null;
+
+    @GetMapping("")
+    public String internCustomerOrder(Model model) {
+        List<CustomerOrder> orders = customerOrderRepository.getAllOrders();
+
+        List<CustomerOrderDelivery> customerOrderDeliveryDataMap = orders
+                .stream()
+                .map(o -> new CustomerOrderDelivery(o, CreateDeliveryData.getDeliveryDataFromCustomerOrder(o, customerOrderRepository, restServiceForDelivery)))
+                .collect(Collectors.toList());
+
+        model.addAttribute("orderDeliveryDataMap", customerOrderDeliveryDataMap);
+
+        return "intern/customerOrders/index";
+    }
+
+    static class CustomerOrderDelivery {
+        private CustomerOrder customerOrder;
+        private DeliveryData deliveryData;
+
+        public CustomerOrderDelivery(CustomerOrder customerOrder, DeliveryData deliveryData) {
+            this.customerOrder = customerOrder;
+            this.deliveryData = deliveryData;
+        }
+
+        public CustomerOrder getCustomerOrder() {
+            return customerOrder;
+        }
+
+        public DeliveryData getDeliveryData() {
+            return deliveryData;
+        }
+    }
+
+    @GetMapping("/{id}")
+    public String internCustomerOrdersId(Model model,
+                                         @PathVariable("id") String id
+    ) {
+        CustomerOrder order = customerOrderRepository.findById(Long.parseLong(id)).get();
+        DeliveryData deliveryData = CreateDeliveryData.getDeliveryDataFromCustomerOrder(order, customerOrderRepository, restServiceForDelivery);
+
+        model.addAttribute("order", order);
+        model.addAttribute("deliveryData", deliveryData);
+
+        return "intern/customerOrders/id";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/customers/CustomersIndexController.java

@@ -0,0 +1,118 @@
+package org.hso.ecommerce.controller.intern.customers;
+
+import org.hso.ecommerce.controller.intern.accounting.AccountingController;
+import org.hso.ecommerce.controller.intern.accounting.AccountingController.ShortTemplateBookingResult;
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.List;
+import java.util.Optional;
+
+@Controller
+@RequestMapping("/intern/customers")
+public class CustomersIndexController {
+
+    @Autowired
+    private BookingRepository bookingRepository = null;
+
+    @Autowired
+    private final CustomerOrderRepository customerOrderRepository = null;
+
+    @Autowired
+    private final UserRepository userRepository = null;
+
+    @Autowired
+    private AccountingController accountingController = null;
+
+    @GetMapping("")
+    public String internCustomers(Model model) {
+        List<User> users = userRepository.findAll();
+
+        model.addAttribute("users", users);
+
+        return "intern/customers/index";
+    }
+
+    @GetMapping("/{id}")
+    public String internCustomersId(Model model,
+                                    @PathVariable("id") Long id,
+                                    HttpServletResponse response,
+                                    HttpServletRequest request
+    ) {
+        Optional<User> optUser = userRepository.findById(id);
+        if (!optUser.isPresent()) {
+            request.setAttribute("error", "Der User wurde nicht gefunden.");
+            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
+            return "error/404";
+        }
+        User user = optUser.get();
+        model.addAttribute("user", user);
+
+        List<CustomerOrder> orders = customerOrderRepository.getOrdersByUserId(id);
+        model.addAttribute("orders", orders);
+
+        List<Booking> bookings = bookingRepository.customerBookingsReverseChronologically(id);
+        ShortTemplateBookingResult result = accountingController.buildShortTemplate(
+                bookings,
+                account -> account.userAccount != null && account.userAccount.id == id);
+        model.addAttribute("balance", result.balance);
+        model.addAttribute("bookings", result.bookings);
+
+        return "intern/customers/id";
+    }
+
+    @PostMapping("/{id}/changeState")
+    public String changeState(@PathVariable("id") Long id,
+                              @RequestParam(value = "active", required = false) String active,
+                              @RequestParam(value = "ma", required = false) String ma
+    ) {
+        User user = userRepository.findById(id).get();
+
+        if (active == null)
+            user.isActive = false;
+        else
+            user.isActive = true;
+
+        if (ma == null)
+            user.isEmployee = false;
+        else
+            user.isEmployee = true;
+
+        userRepository.save(user);
+
+        return "redirect:/intern/customers/" + id.toString();
+    }
+
+    @PostMapping("/{id}/resetPassword")
+    public String resetPassword(@PathVariable("id") Long id,
+                                @RequestParam("password") String password,
+                                @RequestParam("password2") String password2,
+                                HttpServletRequest request
+    ) {
+        if (!password.equals(password2)) {
+            request.setAttribute("error", "Passwörter stimmen nicht überein!");
+            return "intern/customers/id";
+        }
+        User user = userRepository.findById(id).get();
+        if (!user.validatePassword(password)) {
+            request.setAttribute("error", "Die Passwörter stimmen nicht mit dem Original überein!");
+            return "intern/customers/id";
+        }
+        user.setPassword("12345");
+        userRepository.save(user);
+        request.setAttribute("info", "Passwort wurde auf 12345 geändert!");
+
+        return "intern/customers/id";
+    }
+}
+

web_backend/src/main/java/org/hso/ecommerce/controller/intern/suppliers/SupplierIndexController.java

@@ -0,0 +1,157 @@
+package org.hso.ecommerce.controller.intern.suppliers;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import org.hso.ecommerce.controller.intern.accounting.AccountingController;
+import org.hso.ecommerce.controller.intern.accounting.AccountingController.ShortTemplateBooking;
+import org.hso.ecommerce.controller.intern.accounting.AccountingController.ShortTemplateBookingResult;
+import org.hso.ecommerce.entities.booking.Booking;
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.hso.ecommerce.repos.supplier.SupplierOrderRepository;
+import org.hso.ecommerce.repos.supplier.SupplierRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/intern/")
+public class SupplierIndexController {
+
+	@Autowired
+	private final SupplierRepository supplierRepository = null;
+
+	@Autowired
+	private final SupplierOrderRepository supplierOrderRepository = null;
+
+	@Autowired
+	private final BookingRepository bookingRepository = null;
+
+	@Autowired
+	private final AccountingController accountingController = null;
+
+	@GetMapping("suppliers")
+	public String listSuppliers(Model model) {
+
+		List<UImodelSuppliers> totals = new ArrayList<UImodelSuppliers>();
+
+		for (Supplier supplier : supplierRepository.findAll()) {
+			UImodelSuppliers tmp = new UImodelSuppliers(supplier.id, supplier.name);
+			totals.add(tmp);
+		}
+
+		model.addAttribute("suppliers", totals);
+		return "intern/suppliers/index";
+	}
+
+	@GetMapping("/suppliers/{id}")
+	public String supplierDetail(Model model, @PathVariable String id) {
+
+		long supplierId = Long.parseLong(id);
+
+		// add orders from supplier to UImodel
+		List<UImodelSupplierDetailOrders> orders = new ArrayList<UImodelSupplierDetailOrders>();
+		for (SupplierOrder supplierOrder : supplierOrderRepository.findOrderBySupplierID(supplierId)) {
+			orders.add(new UImodelSupplierDetailOrders(supplierOrder));
+		}
+
+		// Table of bookings
+		List<Booking> bookings = bookingRepository.supplierBookingsReverseChronologically(supplierId);
+		ShortTemplateBookingResult bookingResult = accountingController.buildShortTemplate(bookings,
+				account -> account.supplierAccount != null && account.supplierAccount.id == supplierId);
+
+		UImodelSupplierDetail total = new UImodelSupplierDetail(supplierRepository.findSupplierById(supplierId).name,
+				bookingResult.balance, orders, bookingResult.bookings);
+
+		model.addAttribute("SupplierDetail", total);
+
+		return "intern/suppliers/id";
+	}
+
+	public class UImodelSuppliers {
+		public long id;
+		public String name;
+
+		public UImodelSuppliers(long id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+
+	}
+
+	public class UImodelSupplierDetail {
+
+		public String name;
+		public String balance;
+		public List<UImodelSupplierDetailOrders> orders;
+		public List<ShortTemplateBooking> bookings;
+
+		public UImodelSupplierDetail(String name, String balance, List<UImodelSupplierDetailOrders> orders,
+				List<ShortTemplateBooking> bookings
+		) {
+			this.name = name;
+			this.balance = balance;
+			this.orders = orders;
+			this.bookings = bookings;
+		}
+
+	}
+
+	public class UImodelSupplierDetailOrders {
+		public long id;
+		public String dateOrder;
+		public String articleName;
+		public long articleId;
+		public String priceNet;
+		public String quantity;
+		public String priceTotal;
+		public boolean arrived;
+
+		public UImodelSupplierDetailOrders(SupplierOrder order) {
+			this.id = order.id;
+			this.articleName = order.ordered.title;
+			this.articleId = order.ordered.id;
+			this.priceNet = String.format("%.2f", ((float) order.pricePerUnitNetCent / 100));
+			this.quantity = String.valueOf(order.numberOfUnits);
+			this.priceTotal = String.format("%.2f", ((float) order.totalPriceNet / 100));
+
+			Date date = new Date();
+			date.setTime(order.created.getTime());
+			this.dateOrder = new SimpleDateFormat("dd.MM.yyyy").format(date);
+
+			if (order.delivered != null) {
+				arrived = true;
+			} else {
+				arrived = false;
+			}
+		}
+	}
+
+	public class UImodelSupplierDetailBookings {
+
+		public String dateBooking;
+		public String price;
+		public String srcName;
+		public String balance;
+		public String reason;
+		public long orderID;
+
+		public UImodelSupplierDetailBookings(Booking booking) {
+			Date date = new Date();
+			date.setTime(booking.reason.supplierOrder.created.getTime());
+			this.dateBooking = new SimpleDateFormat("dd.MM.yyyy").format(date);
+			this.price = String.format("%.2f", ((float) booking.amountCent / 100));
+			this.srcName = ((booking.source.isMainAccount) ? "Hauptkonto" : booking.source.supplierAccount.name);
+			this.balance = String.format("%.2f", ((float) booking.destination.newSumCent / 100));
+			this.reason = booking.reason.comment;
+			this.orderID = booking.reason.supplierOrder.id;
+		}
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/suppliers/SupplierOfferController.java

@@ -0,0 +1,77 @@
+package org.hso.ecommerce.controller.intern.suppliers;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.shop.OffersRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/intern/")
+public class SupplierOfferController {
+
+	@Autowired
+	private final OffersRepository offersRepository = null;
+
+	@Autowired
+	private final ArticleRepository articleRepository = null;
+
+	@GetMapping("supplierOffers")
+	public String internListedArticles(Model model) {
+
+		List<UImodelOfferedArticle> totals = new ArrayList<>();
+
+		for (ArticleOffer article : offersRepository.findAll()) {
+			UImodelOfferedArticle tmp = new UImodelOfferedArticle(article,
+					articleRepository.findArticleIDByRelatedID(article.id));
+			totals.add(tmp);
+		}
+
+		model.addAttribute("OfferedArticles", totals);
+		return "intern/offeredArticles/index";
+	}
+
+	public class UImodelOfferedArticle {
+
+		public long offerId;
+		public String title;
+		public String manufacturer;
+		public String articleNumber;
+		public String supplierName;
+		public String price;
+		public String ads;
+		public int listedArticleId;
+		public boolean offerIsListed; // true --> offered article is listed
+
+		public UImodelOfferedArticle(ArticleOffer article, Optional<Integer> listedArticleId) {
+
+			this.offerId = article.id;
+			this.title = article.title;
+			this.manufacturer = article.manufacturer;
+			this.articleNumber = article.articleNumber;
+			if (article.cheapestSupplier != null) {
+				this.supplierName = article.cheapestSupplier.name;
+			} else {
+				this.supplierName = "-";
+			}
+			this.price = String.format("%.2f", ((float) article.pricePerUnitNet / 100));
+			this.ads = (article.shouldBeAdvertised) ? "Ja" : "Nein";
+
+			if (listedArticleId.isPresent()) {
+				// this offer is listed --> show link
+				this.listedArticleId = listedArticleId.get();
+				offerIsListed = true;
+			} else {
+				// this offer is not listed
+				offerIsListed = false;
+			}
+		}
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/suppliers/SupplierOrderController.java

@@ -0,0 +1,142 @@
+package org.hso.ecommerce.controller.intern.suppliers;
+
+import org.hso.ecommerce.action.warehouse.SupplierOrderArrivedAction;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.supplier.SupplierOrderRepository;
+import org.hso.ecommerce.repos.warehouse.SlotRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpServletResponse;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Controller
+@RequestMapping("/intern/")
+public class SupplierOrderController {
+
+	@Autowired
+	private final SupplierOrderRepository supplierOrderRepository = null;
+
+	@Autowired
+	private final ArticleRepository articleRepository = null;
+
+	@Autowired
+	private final WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+	@Autowired
+	private final WarehouseBookingRepository warehouseBookingRepository = null;
+
+	@Autowired
+	private final SlotRepository slotRepository = null;
+
+	@GetMapping("supplierOrders")
+	public String listSuppliers(Model model) {
+
+		List<UImodelSupplierOrder> totals = new ArrayList<UImodelSupplierOrder>();
+
+		for (SupplierOrder order : supplierOrderRepository.findAllDesc()) {
+			final Article article = articleRepository.findArticleByArticleOffer(order.ordered).orElse(null);
+			totals.add(new UImodelSupplierOrder(order, article));
+		}
+
+		model.addAttribute("orders", totals);
+
+		return "intern/supplierOrders/index";
+	}
+
+	@PostMapping("/supplierOrders/store/{id}")
+	public String storeOrder(@PathVariable("id") Long supplierOrderID, Model model, HttpServletResponse response) {
+		SupplierOrder order = supplierOrderRepository.findById(supplierOrderID).orElse(null);
+		if (order == null) {
+			model.addAttribute("error", "Die ausgewählte Lieferung konnte nicht gefunden werden.");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return listSuppliers(model);
+		}
+		if (order.wasDelivered()) {
+			model.addAttribute("error", "Die ausgewählte Lieferung wurde schon zugestellt.");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return listSuppliers(model);
+		}
+
+
+		final Article article = articleRepository.findArticleByArticleOffer(order.ordered).orElse(null);
+		if (article == null) {
+			model.addAttribute("error", "Der bestellte Artikel wurde nicht angelegt, er hätte nicht bestellt werden dürfen.");
+			response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+			return listSuppliers(model);
+		}
+
+		// Hard to do efficiently, this should be fine.
+		List<WarehouseBookingPositionSlotEntry> candidates = slotRepository
+				.findAll()
+				.stream()
+				.map(slot ->
+						warehouseBookingPositionSlotEntryRepository.getBySlotNum(slot.slotNum).orElseGet(() ->
+								WarehouseBookingPositionSlotEntry.empty(article, slot)
+						)
+				)
+				.filter(entry -> entry.article.id == article.id || entry.newSumSlot == 0)
+				.collect(Collectors.toList());
+
+		SupplierOrderArrivedAction action = new SupplierOrderArrivedAction(candidates, order, article);
+
+		try {
+			SupplierOrderArrivedAction.Result result = action.finish();
+			supplierOrderRepository.save(result.getOrder());
+			warehouseBookingRepository.save(result.getBooking());
+		} catch (SupplierOrderArrivedAction.NoSpaceInWarehouseException e) {
+			e.printStackTrace();
+		}
+
+		return "redirect:/intern/warehouse/todo";
+	}
+
+	public class UImodelSupplierOrder {
+		public long id;
+		public String dateOrder;
+		public String supplierName;
+		public String articleName;
+		public long articleId;
+		public String priceNet;
+		public String quantity;
+		public String priceTotal;
+		public boolean arrived;
+		public String carrier;
+		public String trackingId;
+		public String estimatedArrival;
+
+
+		public UImodelSupplierOrder(SupplierOrder order, Article article) {
+			this.id = order.id;
+			this.supplierName = order.supplier.name;
+			this.articleName = article != null ? article.title : "error";
+			this.articleId = article != null ? article.id : 0;
+			this.priceNet = String.format("%.2f", ((float) order.pricePerUnitNetCent / 100));
+			this.quantity = String.valueOf(order.numberOfUnits);
+			this.priceTotal = String.format("%.2f", ((float) order.totalPriceNet / 100));
+
+			this.carrier = order.carrier != null ? order.carrier : " - ";
+			this.trackingId = order.trackingId != null ? order.trackingId : " - ";
+			this.estimatedArrival = order.estimatedArrival != null
+					? new SimpleDateFormat("yyyy.MM.dd HH:00").format(order.estimatedArrival) + " Uhr"
+					: " - ";
+
+			this.dateOrder = new SimpleDateFormat("yyyy.MM.dd").format(order.created);
+
+			arrived = order.delivered != null;
+		}
+	}
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/warehouse/ManuelBookingController.java

@@ -0,0 +1,140 @@
+package org.hso.ecommerce.controller.intern.warehouse;
+
+import org.hso.ecommerce.action.warehouse.CreateManuelBookingAction;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.warehouse.Slot;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.warehouse.SlotRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.Optional;
+
+@Controller
+@RequestMapping("/intern/warehouse/")
+public class ManuelBookingController {
+
+    @Autowired
+    private final ArticleRepository articleRepository = null;
+
+    @Autowired
+    private final SlotRepository slotRepository = null;
+
+    @Autowired
+    private final WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+    @Autowired
+    private final WarehouseBookingRepository warehouseBookingRepository = null;
+
+    @GetMapping("addManual")
+    public String warehouseAddManual(
+            Model model
+    ) {
+
+        model.addAttribute("articles", articleRepository.findAll());
+        model.addAttribute("slots", slotRepository.findAll());
+
+        return "intern/warehouse/addManual";
+    }
+
+    @PostMapping("addManual")
+    public String warehouseAddMaualPost(
+            Model model,
+            HttpServletRequest request,
+            HttpServletResponse response,
+            @RequestParam("articleId") String articleIdText,
+            @RequestParam("amount") Integer amount,
+            @RequestParam("reason") String reason,
+            @RequestParam("sourceIsSlot") Boolean sourceIsSlot,
+            @RequestParam("sourceSlot") Integer sourceSlotNum,
+            @RequestParam("destinationIsSlot") Boolean destinationIsSlot,
+            @RequestParam("destinationSlot") Integer destinationSlotNum
+    ) {
+
+        // The suggestions for articleId in the UI show articles names, seperated by a " - ".
+        // The Number must be extracted first.
+        long articleId = -1;
+        try {
+            articleId = Long.parseLong(articleIdText.split(" - ", 2)[0].trim());
+        } catch (NumberFormatException e) {
+            model.addAttribute("error", "Die Artikel Id konnte nicht erkannt werden.");
+            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+            return "intern/warehouse/addManual";
+        }
+
+
+        Optional<Article> optionalArticle = articleRepository.findById(articleId);
+        Article article = null;
+        if (!optionalArticle.isPresent()) {
+            model.addAttribute("error", "Der Artikel konnte nicht gefunden werden.");
+            response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+            return "intern/warehouse/addManual";
+        } else {
+            article = optionalArticle.get();
+        }
+
+        if (amount <= 0) {
+            model.addAttribute("error", "Eine  Anzahl <= 0 kann nicht verbucht werden.");
+            response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+            return "intern/warehouse/addManual";
+        }
+
+        if (sourceIsSlot == false && destinationIsSlot == false) {
+            model.addAttribute("error", "Jede Buchung benötigt ein Ziel oder eine Quelle.");
+            response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+            return "intern/warehouse/addManual";
+        }
+
+        Optional<WarehouseBookingPositionSlotEntry> sourceSlot = Optional.empty();
+        if (sourceIsSlot == true) {
+            sourceSlot = warehouseBookingPositionSlotEntryRepository.getBySlotNum(sourceSlotNum);
+            if (!sourceSlot.isPresent()) {
+                request.setAttribute("error", "Quelllagerplatz wurde nicht gefunden oder ist leer.");
+                response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+                return "intern/warehouse/addManual";
+            }
+        }
+
+        Optional<WarehouseBookingPositionSlotEntry> destinationSlot = Optional.empty();
+        if (destinationIsSlot == true) {
+            Optional<Slot> slot = slotRepository.findBySlotNum(destinationSlotNum);
+            if (!slot.isPresent()) {
+                request.setAttribute("error", "Ziellagerplatz wurde nicht gefunden.");
+                response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+                return "intern/warehouse/addManual";
+            }
+
+            Article finalArticle = article;
+            destinationSlot = Optional.of(warehouseBookingPositionSlotEntryRepository.getBySlotNum(destinationSlotNum).orElseGet(
+                    () -> WarehouseBookingPositionSlotEntry.empty(finalArticle, slot.get())
+            ));
+        }
+
+        try {
+            warehouseBookingRepository.save(
+                    new CreateManuelBookingAction(article, amount, sourceSlot, destinationSlot, reason).finish()
+            );
+        } catch (CreateManuelBookingAction.ArticleSlotConstraintArticleTypeFailedException e) {
+            model.addAttribute("error", "Es befindet sich der falsche Artikeltyp in Quell- oder Ziellagerplatz. ");
+            response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+            return "intern/warehouse/addManual";
+        } catch (CreateManuelBookingAction.ArticleSlotConstraintFailedException e) {
+            model.addAttribute("error", "Die maximale Anzahl an lagerbaren Artikeln im Ziellagerplatz wurde überschritten.");
+            response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
+            return "intern/warehouse/addManual";
+        }
+
+        return "redirect:/intern/warehouse/todo";
+    }
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/warehouse/SlotsController.java

@@ -0,0 +1,46 @@
+package org.hso.ecommerce.controller.intern.warehouse;
+
+import org.hso.ecommerce.action.warehouse.CalculateWarehouseStatsAction;
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+import org.hso.ecommerce.repos.warehouse.SlotRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Controller
+@RequestMapping("/intern/warehouse/")
+public class SlotsController {
+
+    @Autowired
+    private final WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+    @Autowired
+    private final SlotRepository slotRepository = null;
+
+    @GetMapping("slots/")
+    public String accountingWarehouseSlots(
+            Model model,
+            HttpServletRequest request
+    ) {
+
+        // Doing this in a single would be hard and error prone.
+        // Writing native queries should be minimized.
+        // Therefore this method was prefered
+        List<WarehouseBookingPositionSlotEntry> entries = slotRepository.findAll().stream().map(
+                s -> warehouseBookingPositionSlotEntryRepository
+                        .getBySlotNum(s.slotNum)
+                        .orElseGet(() -> WarehouseBookingPositionSlotEntry.empty(null, s))
+        ).collect(Collectors.toList());
+        model.addAttribute("entries", entries);
+
+        model.addAttribute("stats", new CalculateWarehouseStatsAction(entries).finish());
+        return "intern/warehouse/slots/index";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/intern/warehouse/TodoController.java

@@ -0,0 +1,124 @@
+package org.hso.ecommerce.controller.intern.warehouse;
+
+import org.hso.ecommerce.action.shop.EnableTrackingAction;
+import org.hso.ecommerce.api.RestServiceForDelivery;
+import org.hso.ecommerce.entities.warehouse.WarehouseBooking;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.client.ResourceAccessException;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.Optional;
+
+@Controller
+@RequestMapping("/intern/warehouse/")
+public class TodoController {
+
+    @Autowired
+    private final WarehouseBookingRepository warehouseBookingRepository = null;
+
+    @Autowired
+    private final RestServiceForDelivery deliveryService = null;
+
+    @GetMapping("todo")
+    public String accountingWarehouseTodo(
+            Model model
+    ) {
+        model.addAttribute("bookings", warehouseBookingRepository.findNotDone());
+        return "intern/warehouse/todo";
+    }
+
+
+    @PostMapping("progress/{id}")
+    public String postProgressId(
+            Model model,
+            HttpServletRequest request,
+            HttpServletResponse response,
+            @PathVariable("id") Long id
+    ) {
+        Optional<WarehouseBooking> booking = warehouseBookingRepository.findById(id);
+        if (!booking.isPresent()) {
+            model.addAttribute("error", "Die Buchung wurde nicht gefunden.");
+            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+            return "error/404";
+        }
+
+        if (booking.get().isInProgress) {
+            response.setStatus(409);
+            return "intern/warehouse/error_progress_failed";
+        }
+
+        booking.get().isInProgress = true;
+        warehouseBookingRepository.save(booking.get());
+
+        return "redirect:/intern/warehouse/progress/" + id;
+    }
+
+    @PostMapping("progress/{id}/finish")
+    public String postProgressIdFinish(
+            Model model,
+            HttpServletRequest request,
+            HttpServletResponse response,
+            @PathVariable("id") Long id
+    ) {
+        Optional<WarehouseBooking> booking = warehouseBookingRepository.findById(id);
+        if (!booking.isPresent()) {
+            model.addAttribute("error", "Die Buchung wurde nicht gefunden.");
+            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+            return "error/404";
+        }
+
+        booking.get().isInProgress = true;
+        booking.get().isDone = true;
+
+        // Update Delivery Date
+        if (booking.get().reason.customerOrder != null) {
+            try{
+                EnableTrackingAction.addTrackingInfo(deliveryService, booking.get().reason.customerOrder);
+            }
+            catch(ResourceAccessException e)
+            {
+                return "error/500";
+            }
+
+        }
+
+        warehouseBookingRepository.save(booking.get());
+
+        return "redirect:/intern/warehouse/todo";
+    }
+
+    @GetMapping("progress/{id}")
+    public String getProgressId(Model model,
+                                HttpServletRequest request,
+                                HttpServletResponse response,
+                                @PathVariable("id") Long id) {
+        Optional<WarehouseBooking> booking = warehouseBookingRepository.findById(id);
+        if (!booking.isPresent()) {
+            model.addAttribute("error", "Die Buchung wurde nicht gefunden.");
+            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+            return "error/404";
+        }
+
+        if (booking.get().isDone) {
+            model.addAttribute("info", "Die Buchung wurde schon abgeschlossen.");
+        }
+
+        if (!booking.get().isInProgress) {
+            // Only reachable if path is manipulated.
+            model.addAttribute("error", "Die Buchung wurde noch nicht zugewiesen!");
+        }
+
+        model.addAttribute("booking", booking.get());
+        return "intern/warehouse/id_progress";
+    }
+
+
+}

web_backend/src/main/java/org/hso/ecommerce/controller/shop/ShopArticleController.java

@@ -0,0 +1,122 @@
+package org.hso.ecommerce.controller.shop;
+
+import org.apache.tomcat.util.http.fileupload.IOUtils;
+import org.hso.ecommerce.action.shop.GetRandomArticlesAction;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.shop.ShoppingCart;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.shop.CategoryRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+@Controller
+@RequestMapping("/shop/articles")
+public class ShopArticleController {
+
+    @Autowired
+    private final ArticleRepository articleRepository = null;
+
+    @Autowired
+    private final WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+    @Autowired
+    private final CategoryRepository categoryRepository = null;
+
+    @GetMapping("/{id}")
+    public String shopArticlesById(Model model,
+                                   @PathVariable("id") Long id,
+                                   HttpServletRequest request,
+                                   HttpServletResponse response
+    ) {
+        model.addAttribute("categories", categoryRepository.getCategories());   //for sidebar
+
+        Article article = articleRepository.findArticleById(id);
+
+        if (article == null) {
+            request.setAttribute("error", "Der Artikel wurde nicht gefunden.");
+            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
+            return "error/404";
+        }
+        model.addAttribute("article", article);
+
+        if (warehouseBookingPositionSlotEntryRepository
+                .getByArticle(id)
+                .stream()
+                .mapToInt(e -> e.newSumSlot)
+                .sum() > 0) {   //check if in Stock
+            model.addAttribute("inStock", true);
+        } else {
+            model.addAttribute("inStock", false);
+        }
+
+        List<Article> commercialArticles = GetRandomArticlesAction.getRandomArticles(3, articleRepository.getAdvertisedArticles()); //get 3 advertised Articles
+        model.addAttribute("commercialArticles", commercialArticles);
+
+        return "shop/articles/id";
+    }
+
+    @PostMapping("/{id}")
+    public String shopArticlesByIdBuy(HttpServletRequest request,
+                                      HttpServletResponse response,
+                                      HttpSession session,
+                                      @RequestAttribute(value = "shoppingCart") ShoppingCart shoppingCart,
+                                      @PathVariable("id") Long id,
+                                      @RequestParam("quantity") Integer quantity,
+                                      @RequestParam(value = "set_amount", required = false) Boolean setAmount,
+                                      @RequestParam("fastcheckout") Boolean fastcheckout
+    ) {
+        Article article = articleRepository.findArticleById(id);
+
+        if (article == null) {
+            request.setAttribute("error", "Der Artikel wurde nicht gefunden.");
+            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
+            return "error/404";
+        }
+
+        if (setAmount != null && setAmount) {
+            shoppingCart.setArticleCount(article, quantity);
+        } else {
+            shoppingCart.addArticle(article, quantity);
+        }
+
+        if (!fastcheckout) {
+            return "shop/articles/post_add";
+        } else {
+            return "redirect:/shop/checkout";
+        }
+    }
+
+    @GetMapping("/{id}/image.jpg")
+    public void getImageAsByteArray(HttpServletRequest request,
+                                    HttpServletResponse response,
+                                    @PathVariable("id") Long id
+    ) throws IOException {
+        Article article = articleRepository.findArticleById(id);
+
+        if(article.image != null) {
+            File file = new File(article.image.path);
+            File allowedPath = new File("./data/img/");
+
+            if (file.getCanonicalPath().startsWith(allowedPath.getCanonicalPath())) {
+                InputStream in = new FileInputStream(file);
+                response.setContentType(MediaType.IMAGE_JPEG_VALUE);
+                IOUtils.copy(in, response.getOutputStream());
+            } else {
+                throw new RuntimeException("Got illegal file path. DB was modified.");
+            }
+        }        
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/shop/ShopCheckoutController.java

@@ -0,0 +1,163 @@
+package org.hso.ecommerce.controller.shop;
+
+import org.hso.ecommerce.action.shop.CreateOrderAction;
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.hso.ecommerce.entities.booking.PaymentMethod;
+import org.hso.ecommerce.entities.shop.Address;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.shop.ShoppingCart;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.booking.BookingAccountEntryRepository;
+import org.hso.ecommerce.repos.booking.BookingRepository;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.shop.CustomerOrderRepository;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.util.ArrayList;
+import java.util.TreeMap;
+
+@Controller
+@RequestMapping("/shop/")
+public class ShopCheckoutController {
+
+    @Autowired
+    private final UserRepository userRepository = null;
+
+    @Autowired
+    private final ArticleRepository articleRepository = null;
+
+    @Autowired
+    private final BookingAccountEntryRepository bookingEntryRepository = null;
+
+    @Autowired
+    private final BookingRepository bookingRepository = null;
+
+    @Autowired
+    private final WarehouseBookingRepository warehouseBookingRepository = null;
+
+    @Autowired
+    private final CustomerOrderRepository customerOderRepository = null;
+
+    @Autowired
+    private final WarehouseBookingPositionSlotEntryRepository wbeseRepo = null;
+
+    @GetMapping("/checkout")
+    public String shopCheckout(HttpSession session,
+                               HttpServletRequest request,
+                               @RequestAttribute(value = "shoppingCart") ShoppingCart shoppingCart) {
+        session.setAttribute("afterLogin", request.getRequestURI());
+
+        CheckoutListTotals totals = new CheckoutListTotals();
+        ArrayList<CheckoutListItem> items = new ArrayList<>();
+        for (ShoppingCart.ShoppingCartItem item : shoppingCart.getItems()) {
+            Article article = articleRepository.findById(item.getArticleId()).get();
+
+            totals.addItem(article, item.getAmount());
+            items.add(new CheckoutListItem(item.getAmount(), article));
+        }
+
+        request.setAttribute("checkoutItems", items);
+        request.setAttribute("checkoutTotals", totals);
+
+        return "shop/checkout";
+    }
+
+    public static class CheckoutListTotals {
+        public int net;
+        public TreeMap<Integer, Integer> vatAmounts = new TreeMap<>();
+        public int total;
+
+        void addItem(Article article, int amount) {
+            net += article.shopPricePerUnitNetCent * amount;
+            Integer vatPos = vatAmounts.getOrDefault(article.related.vatPercent, 0) + article.getVat() * amount;
+            vatAmounts.put(article.related.vatPercent, vatPos);
+            total += article.getPriceGross() * amount;
+        }
+    }
+
+    public static class CheckoutListItem {
+        public int amount;
+        public Article article;
+        public int total;
+
+        public CheckoutListItem(int amount, Article article) {
+            this.amount = amount;
+            this.article = article;
+            this.total = amount * article.getPriceGross();
+        }
+    }
+
+    @PostMapping("/checkoutFinish")
+    public String shopCheckoutFinish(
+            HttpSession session,
+            HttpServletRequest request,
+            HttpServletResponse response,
+            @RequestAttribute(value = "user") User user,
+            @RequestAttribute(value = "shoppingCart") ShoppingCart shoppingCart,
+            @RequestParam("address") String address,
+            @RequestParam("cardnumber") String cardnumber,
+            @RequestParam("shopping_cart_revision") Integer cartRevision,
+            @RequestParam("expected_total") Integer expectedPrice
+    ) {
+
+        if (shoppingCart.getRevision() != cartRevision) {
+            request.setAttribute("error", "Der Warenkorb wurde zwischenzeitlich bearbeitet. Daher konnte der Kaufvorgang nicht abgeschlossen werden. Bitte versuchen Sie es erneut.");
+            response.setStatus(HttpServletResponse.SC_CONFLICT);
+            return "shop/checkout";
+        }
+
+        // Must be refetched for persitence.
+        user = userRepository.findById(user.id).get();
+
+        CreateOrderAction action = new CreateOrderAction(
+                user,
+                expectedPrice,
+                Address.fromString(address),
+                PaymentMethod.fromCreditCardNumber(cardnumber),
+                bookingEntryRepository.getByUser(user.id).orElse(BookingAccountEntry.newUser(user)),
+                bookingEntryRepository.getByVat().orElse(BookingAccountEntry.newVat()),
+                bookingEntryRepository.getByMain().orElse(BookingAccountEntry.newMain())
+        );
+
+        for (ShoppingCart.ShoppingCartItem item : shoppingCart.getItems()) {
+            Article article = articleRepository.findById(item.getArticleId()).get();
+            action.addArticle(article, item.getAmount(), wbeseRepo.getByArticle(article.id));
+        }
+
+        CreateOrderAction.Result result = null;
+        try {
+            result = action.finish();
+
+            customerOderRepository.save(result.customerOrder);
+            bookingRepository.saveAll(result.bookings);
+            warehouseBookingRepository.save(result.warehouseBooking);
+
+            if (user.defaultPayment == null) {
+                user.defaultPayment = PaymentMethod.fromCreditCardNumber(cardnumber);
+                userRepository.save(user);
+            }
+
+            shoppingCart.clear();
+
+        } catch (CreateOrderAction.ArticleNotInStockException e) {
+            request.setAttribute("error", "Der Artikel '" + e.getArticle().title + "' ist leider nicht mehr in ausreichender Menge verfügbar. Bitte passen Sie die Artikelmenge an.");
+            return shopCheckout(session, request, shoppingCart);
+        }
+
+
+        return "shop/checkoutFinish";
+    }
+
+    @GetMapping("/checkoutFinish")
+    public String shopCheckoutFinishGET() {
+        return "shop/checkoutFinish";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/shop/ShopIndexController.java

@@ -0,0 +1,72 @@
+package org.hso.ecommerce.controller.shop;
+
+import org.hso.ecommerce.action.shop.GetRandomArticlesAction;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.warehouse.WarehouseBookingPositionSlotEntryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import javax.servlet.http.HttpSession;
+import java.util.List;
+
+@Controller
+@RequestMapping("/")
+public class ShopIndexController {
+
+    @Autowired
+    private final ArticleRepository articleRepository = null;
+
+    @Autowired
+    private final WarehouseBookingPositionSlotEntryRepository warehouseBookingPositionSlotEntryRepository = null;
+
+    @GetMapping("/")
+    public String home() {
+        return "redirect:/shop/";
+    }
+
+    @GetMapping("/shop/")
+    public String shop(Model model, HttpSession session) {
+
+        List<Article> commercialArticles = GetRandomArticlesAction.getRandomArticles(8, articleRepository.getAdvertisedArticles()); //get random advertised Articles
+        model.addAttribute("commercialArticles", commercialArticles);
+
+        boolean isLoggedIn = false;
+        boolean hasOrders = false;
+
+        if (session != null && session.getAttribute("userId") != null) {    //check if logged in
+            long userId = (long) session.getAttribute("userId");
+            isLoggedIn = true;
+
+            List<Article> suggestedArticles = articleRepository.getOrderedArticles(userId);
+            suggestedArticles = suggestedArticles.size() > 3 ? suggestedArticles.subList(0, 4) : suggestedArticles; //only latest 4 ordered articles
+            if (suggestedArticles.size() > 0) {
+                model.addAttribute("suggestedArticles", suggestedArticles);
+                hasOrders = true;
+            }
+        }
+
+        model.addAttribute("isLoggedIn", isLoggedIn);
+        model.addAttribute("hasOrders", hasOrders);
+
+        return "shop/index";
+    }
+
+    @GetMapping("/about")
+    public String about() {
+        return "about";
+    }
+
+    @GetMapping("/terms")
+    public String terms() {
+        return "terms";
+    }
+
+    @GetMapping("/privacy")
+    public String privacy() {
+        return "privacy";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/controller/shop/ShopSearchController.java

@@ -0,0 +1,54 @@
+package org.hso.ecommerce.controller.shop;
+
+import org.hso.ecommerce.action.shop.SearchByTermAction;
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.repos.shop.ArticleRepository;
+import org.hso.ecommerce.repos.shop.CategoryRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.List;
+
+@Controller
+@RequestMapping("/shop/search")
+public class ShopSearchController {
+
+    @Autowired
+    private final ArticleRepository articleRepository = null;
+
+    @Autowired
+    private final CategoryRepository categoryRepository = null;
+
+    @GetMapping("")
+    public String searchArticles(@RequestParam(required = false, value = "term") String term,
+                                 @RequestParam(required = false, value = "category") String category,
+                                 Model model,
+                                 HttpServletRequest request,
+                                 HttpServletResponse response
+    ) {
+        model.addAttribute("categories", categoryRepository.getCategories());   //for sidebar
+
+        if (term != null) { //if search by Term
+            term = term.trim();
+            List<Article> articles = SearchByTermAction.searchByTerm(term, articleRepository);
+            model.addAttribute("articles", articles);
+        } else if (category != null) {  //if search by Category
+            List<Article> articles = articleRepository.getArticlesByCategory(category); //search by Category
+            model.addAttribute("articles", articles);
+        } else {
+            List<Article> articles = SearchByTermAction.searchByTerm("", articleRepository);
+            model.addAttribute("articles", articles);
+        }
+
+        // Show term in search box
+        model.addAttribute("searchterm", term != null ? term : "");
+
+        return "shop/search";
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/booking/Booking.java

@@ -0,0 +1,29 @@
+package org.hso.ecommerce.entities.booking;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "bookings")
+public class Booking {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    // always >= 0
+    public int amountCent;
+
+    @NotNull
+    public java.sql.Timestamp created;
+
+    @ManyToOne(optional = true, cascade = CascadeType.ALL)
+    public BookingAccountEntry source;
+
+    @ManyToOne(optional = true, cascade = CascadeType.ALL)
+    public BookingAccountEntry destination;
+
+    @OneToOne(optional = false, cascade = CascadeType.ALL)
+    public BookingReason reason;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/booking/BookingAccountEntry.java

@@ -0,0 +1,72 @@
+package org.hso.ecommerce.entities.booking;
+
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.hso.ecommerce.entities.user.User;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "booking_account_entries")
+public class BookingAccountEntry {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    public int newSumCent;
+
+    @ManyToOne(optional = true, cascade = CascadeType.MERGE)
+    public User userAccount;
+
+    @ManyToOne(optional = true, cascade = CascadeType.MERGE)
+    public Supplier supplierAccount;
+
+    public boolean isMainAccount;
+    public boolean isVATAccount;
+
+    public BookingAccountEntry copyAddAmount(int amountCent) {
+        BookingAccountEntry e = new BookingAccountEntry();
+
+        e.userAccount = userAccount;
+        e.supplierAccount = supplierAccount;
+        e.isMainAccount = isMainAccount;
+        e.isVATAccount = isVATAccount;
+
+        e.newSumCent = newSumCent + amountCent;
+
+        return e;
+    }
+
+    public static BookingAccountEntry newUser(User user) {
+        BookingAccountEntry e = new BookingAccountEntry();
+        e.userAccount = user;
+        e.newSumCent = 0;
+
+        return e;
+    }
+
+    public static BookingAccountEntry newSupplier(Supplier supplier) {
+        BookingAccountEntry e = new BookingAccountEntry();
+        e.supplierAccount = supplier;
+        e.newSumCent = 0;
+
+        return e;
+    }
+
+    public static BookingAccountEntry newMain() {
+        BookingAccountEntry e = new BookingAccountEntry();
+        e.isMainAccount = true;
+        e.newSumCent = 0;
+
+        return e;
+    }
+
+    public static BookingAccountEntry newVat() {
+        BookingAccountEntry e = new BookingAccountEntry();
+        e.isVATAccount = true;
+        e.newSumCent = 0;
+
+        return e;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/booking/BookingReason.java

@@ -0,0 +1,59 @@
+package org.hso.ecommerce.entities.booking;
+
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "booking_reasons")
+public class BookingReason {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    public boolean isManuel;
+    public boolean isStartBooking;
+
+    public String comment;
+
+    @ManyToOne(optional = true)
+    public CustomerOrder customerOrder;
+
+    @OneToOne(optional = true, cascade = CascadeType.ALL)
+    public CustomerPayment customerPayment;
+
+    @ManyToOne(optional = true)
+    public SupplierOrder supplierOrder;
+
+    @ManyToOne(optional = true)
+    public Supplier supplierPayment;
+
+    // Default Constructor is needed for construction by ORM
+    public BookingReason() {
+    }
+
+    public BookingReason(CustomerOrder order) {
+        this.customerOrder = order;
+    }
+
+    public BookingReason(CustomerPayment customerPayment) {
+        this.customerPayment = customerPayment;
+    }
+
+    public BookingReason(Supplier supplierPayment) {
+        this.supplierPayment = supplierPayment;
+    }
+
+    public BookingReason(SupplierOrder supplierOrder) {
+        this.supplierOrder = supplierOrder;
+    }
+
+    public BookingReason(String comment) {
+        this.isManuel = true;
+        this.comment = comment;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/booking/CustomerPayment.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.entities.booking;
+
+import org.hso.ecommerce.entities.booking.PaymentMethod;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "customer_payments")
+public class CustomerPayment {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    public int amountCent;
+
+    @Embedded
+    public PaymentMethod payment;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/booking/PaymentMethod.java

@@ -0,0 +1,16 @@
+package org.hso.ecommerce.entities.booking;
+
+import javax.persistence.Embeddable;
+
+@Embeddable
+public class PaymentMethod {
+
+    public String creditCardNumber;
+
+    public static PaymentMethod fromCreditCardNumber(String cardnumber) {
+        PaymentMethod m = new PaymentMethod();
+        m.creditCardNumber = cardnumber;
+
+        return m;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/cron/BackgroundJob.java

@@ -0,0 +1,24 @@
+package org.hso.ecommerce.entities.cron;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "background_jobs")
+public class BackgroundJob {
+
+    public static final String JOB_DASHBOARD = "Dashboard";
+    public static final String JOB_REORDER = "SupplierOrder";
+    public static final String JOB_SUPPLIER_AUTO_PAYMENT = "SupplierAutoPayment";
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    public String jobName;
+
+    @NotNull
+    public java.sql.Timestamp lastExecution;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/dashboard/DashboardSummary.java

@@ -0,0 +1,32 @@
+package org.hso.ecommerce.entities.dashboard;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "dashboard_summaries")
+public class DashboardSummary {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    public java.sql.Date created;
+
+    @NotNull
+    public Integer todaysNewCustomers;
+
+    @NotNull
+    public Integer todaysCustomersOrders;
+
+    @NotNull
+    public Integer todaysSalesCent;
+
+    @NotNull
+    public Double currentWarehouseCapacity;
+
+    @NotNull
+    public Double todaysWarehouseCapacity;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/Address.java

@@ -0,0 +1,27 @@
+package org.hso.ecommerce.entities.shop;
+
+import javax.persistence.Embeddable;
+
+@Embeddable
+public class Address {
+    public String name = "";
+    public String addressString = "";
+    public String country = "DE";
+
+    @Override
+    public String toString() {
+        return name + "\n" + addressString;
+    }
+
+    public static Address fromString(String addr) {
+        Address a = new Address();
+
+        String[] arr = addr.split("\n", 2);
+        a.name = arr[0];
+        if (arr.length > 1) {
+            a.addressString = arr[1];
+        }
+
+        return a;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/Article.java

@@ -0,0 +1,49 @@
+package org.hso.ecommerce.entities.shop;
+
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+@Table(name = "articles")
+public class Article {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @OneToOne(optional = false)
+    public ArticleOffer related;
+
+    public int shopPricePerUnitNetCent;
+    public int warehouseUnitsPerSlot;
+
+    public boolean shouldReorder;
+    public int reorderMaxPrice;
+
+    @NotNull
+    public String title;
+
+    @NotNull
+    public String description;
+
+    @OneToOne(optional = true)
+    @Basic(fetch = FetchType.LAZY)
+    public Image image;
+
+    @ManyToMany(cascade = CascadeType.ALL)
+    @JoinTable(name = "article_categories_bindings")
+    public Set<Category> categories = new HashSet<>();
+
+    public int getVat() {
+        return (shopPricePerUnitNetCent * related.vatPercent) / 100;
+    }
+
+    public int getPriceGross() {
+        return shopPricePerUnitNetCent + getVat();
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/Category.java

@@ -0,0 +1,34 @@
+package org.hso.ecommerce.entities.shop;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import java.util.HashSet;
+import java.util.Set;
+
+@Entity
+@Table(name = "categories")
+public class Category {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    @Column(unique = true)
+    public String name;
+
+    @ManyToMany(mappedBy = "categories")
+    public Set<Article> articles = new HashSet<>();
+    
+    
+    public Category() {
+    	
+    }
+    
+    
+    public Category (String name) {
+    	this.name = name;
+    }
+    
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/CustomerOrder.java

@@ -0,0 +1,59 @@
+package org.hso.ecommerce.entities.shop;
+
+import org.hso.ecommerce.entities.user.User;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Table(name = "customer_orders")
+public class CustomerOrder {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @ManyToOne(optional = false)
+    public User customer;
+
+    @Embedded
+    public Address destination;
+
+    @OneToMany(
+            targetEntity = CustomerOrderPosition.class,
+            mappedBy = "order", cascade = CascadeType.ALL
+    )
+    public List<CustomerOrderPosition> positions = new ArrayList<>();
+
+    @NotNull
+    public java.sql.Timestamp created;
+
+    @Column(nullable = true)
+    public String trackingId;
+
+    @Column(nullable = true)
+    public java.sql.Timestamp inDeliverySince;
+
+    @Column(nullable = true)
+    public java.sql.Timestamp deliveredAt;
+
+    public int totalNetCent;
+    public int totalGrossCent;
+    public int totalVatCent;
+
+    public String formatInDeliverySince(){
+        return new SimpleDateFormat("dd.MM.yyyy HH:mm").format(inDeliverySince);
+    }
+
+    public String formatCreated(){
+        return new SimpleDateFormat("dd.MM.yyyy HH:mm").format(created);
+    }
+
+    public String formatDeliveredAt(){
+        return new SimpleDateFormat("dd.MM.yyyy HH:mm").format(deliveredAt);
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/CustomerOrderPosition.java

@@ -0,0 +1,26 @@
+package org.hso.ecommerce.entities.shop;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "customer_order_positions")
+public class CustomerOrderPosition {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @ManyToOne(optional = false)
+    public CustomerOrder order;
+
+    @ManyToOne(optional = false)
+    public Article article;
+
+    public int pricePerUnit;
+    public int quantity;
+
+    public int getSumPrice(){
+        return article.getPriceGross() * quantity;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/Image.java

@@ -0,0 +1,15 @@
+package org.hso.ecommerce.entities.shop;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "images")
+public class Image {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    public String path;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/shop/ShoppingCart.java

@@ -0,0 +1,103 @@
+package org.hso.ecommerce.entities.shop;
+
+import java.util.ArrayList;
+import java.util.List;
+
+// Not a db entity. Just for session storage
+public class ShoppingCart {
+
+    private final static int MAX_ITEMS = 10;
+
+    private int revision;
+    private ArrayList<ShoppingCartItem> items;
+
+    public ShoppingCart() {
+        clear();
+    }
+
+    public void clear() {
+        items = new ArrayList<>();
+        revision = (int) Math.round(Math.random() * 0xFFFF);
+    }
+
+    public List<ShoppingCartItem> getItems() {
+        return items;
+    }
+
+    public int getItemCount() {
+        int count = 0;
+
+        for (ShoppingCartItem i : items) {
+            count += i.getAmount();
+        }
+
+        return count;
+    }
+
+    public int getRevision() {
+        return revision;
+    }
+
+    public void addArticle(Article article, int quantity) {
+        this.revision++;
+
+        for (ShoppingCartItem i : items) {
+            if (i.getArticleId() == article.id) {
+                i.addAmount(quantity);
+                return;
+            }
+        }
+
+        items.add(new ShoppingCartItem(quantity, article));
+    }
+
+    public void setArticleCount(Article article, Integer quantity) {
+        this.revision++;
+
+        boolean found = false;
+        for (ShoppingCartItem i : items) {
+            if (i.getArticleId() == article.id) {
+                i.setAmount(quantity);
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            items.add(new ShoppingCartItem(quantity, article));
+        }
+
+        items.removeIf(i -> i.getAmount() <= 0);
+    }
+
+    public static class ShoppingCartItem {
+        private int amount;
+        private final long articleId;
+
+        public ShoppingCartItem(int amount, Article article) {
+            this.amount = amount;
+            this.articleId = article.id;
+        }
+
+        public int getAmount() {
+            return amount;
+        }
+
+        public void addAmount(int amount) {
+            this.amount += amount;
+            if (this.amount > MAX_ITEMS) {
+                this.amount = MAX_ITEMS;
+            }
+        }
+
+        public long getArticleId() {
+            return articleId;
+        }
+
+        public void setAmount(Integer amount) {
+            this.amount = amount;
+            if (this.amount > MAX_ITEMS) {
+                this.amount = MAX_ITEMS;
+            }
+        }
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/supplier/ArticleOffer.java

@@ -0,0 +1,33 @@
+package org.hso.ecommerce.entities.supplier;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "article_offers")
+public class ArticleOffer {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    public String manufacturer;
+    
+    @NotNull
+    public String title;
+    
+    @NotNull
+    public int pricePerUnitNet;
+
+    @NotNull
+    public String articleNumber;
+
+    public int vatPercent;
+
+    public boolean shouldBeAdvertised;
+    
+    @ManyToOne(optional = true)
+    public Supplier cheapestSupplier;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/supplier/Supplier.java

@@ -0,0 +1,23 @@
+package org.hso.ecommerce.entities.supplier;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "suppliers")
+public class Supplier {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @Column(unique = true)
+    public String uuid;
+
+    @NotNull
+    public String name;
+
+    @NotNull
+    public String apiUrl;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/supplier/SupplierOrder.java

@@ -0,0 +1,46 @@
+package org.hso.ecommerce.entities.supplier;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import java.sql.Timestamp;
+
+@Entity
+@Table(name = "supplier_orders")
+public class SupplierOrder {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    public java.sql.Timestamp created;
+
+    @ManyToOne(optional = false)
+    public Supplier supplier;
+
+    @ManyToOne(optional = false)
+    public ArticleOffer ordered;
+
+    public int numberOfUnits;
+    public int pricePerUnitNetCent;
+
+    // Includes discounts
+    public int totalPriceNet;
+
+    @Column(nullable = true)
+    public String carrier;
+
+    @Column(nullable = true)
+    public String trackingId;
+
+    @Column(nullable = true)
+    public Timestamp estimatedArrival;
+
+    @Column(nullable = true)
+    public Timestamp delivered;
+
+    public boolean wasDelivered() {
+        return delivered != null;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/user/User.java

@@ -0,0 +1,51 @@
+package org.hso.ecommerce.entities.user;
+
+import org.hso.ecommerce.entities.booking.PaymentMethod;
+import org.hso.ecommerce.entities.shop.Address;
+import org.springframework.security.crypto.bcrypt.BCrypt;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+
+@Entity
+@Table(name = "users")
+public class User {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    public java.sql.Timestamp created;
+
+    @NotNull
+    @Column(unique = true)
+    public String email;
+
+    public String salutation;
+
+    public String passwordHash;
+
+    public boolean isActive;
+    public boolean isEmployee;
+
+    @Embedded
+    public Address defaultDeliveryAddress;
+
+    @Embedded
+    public PaymentMethod defaultPayment;
+
+    public long getId() {
+        return id;
+    }
+
+    public boolean validatePassword(String password) {
+        return BCrypt.checkpw(password, passwordHash);
+    }
+
+    public void setPassword(String password) {
+        passwordHash = BCrypt.hashpw(password, BCrypt.gensalt());
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/entities/warehouse/Slot.java

@@ -0,0 +1,17 @@
+package org.hso.ecommerce.entities.warehouse;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "warehouse_slots")
+public class Slot {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    @Column(unique = true)
+    public int slotNum;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/warehouse/WarehouseBooking.java

@@ -0,0 +1,33 @@
+package org.hso.ecommerce.entities.warehouse;
+
+import org.hso.ecommerce.entities.booking.BookingReason;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Table(name = "warehouse_bookings")
+public class WarehouseBooking {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    public java.sql.Timestamp created;
+
+    public boolean isInProgress;
+    public boolean isDone;
+
+    @OneToMany(
+            mappedBy = "booking", cascade = CascadeType.ALL
+    )
+    public List<WarehouseBookingPosition> positions = new ArrayList<>();
+
+    // TODO FIX ME
+    @OneToOne(optional = false, cascade = CascadeType.ALL)
+    public BookingReason reason;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/warehouse/WarehouseBookingPosition.java

@@ -0,0 +1,28 @@
+package org.hso.ecommerce.entities.warehouse;
+
+import org.hso.ecommerce.entities.shop.Article;
+
+import javax.persistence.*;
+
+// TODO Unify with $$$ Bookings + WarehouseBookingEntry.
+
+@Entity
+@Table(name = "warehouse_booking_positions")
+public class WarehouseBookingPosition {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @ManyToOne(optional = false)
+    public WarehouseBooking booking;
+
+    @ManyToOne(optional = false)
+    public Article article;
+
+    public int amount; // positive or negative
+
+    @ManyToOne(optional = true, cascade = CascadeType.ALL)
+    public WarehouseBookingPositionSlotEntry slotEntry;
+}

web_backend/src/main/java/org/hso/ecommerce/entities/warehouse/WarehouseBookingPositionSlotEntry.java

@@ -0,0 +1,56 @@
+package org.hso.ecommerce.entities.warehouse;
+
+import org.hso.ecommerce.entities.shop.Article;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+
+@Entity
+@Table(name = "warehouse_booking_position_entries")
+public class WarehouseBookingPositionSlotEntry {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Basic
+    public long id;
+
+    @NotNull
+    @ManyToOne
+    public Article article;
+
+    @NotNull
+    public int newSumSlot;
+
+    @NotNull
+    @ManyToOne
+    public Slot slot;
+
+    public WarehouseBookingPositionSlotEntry copyAddAmount(int amount, Article article) {
+        // Article can be changed if newSumSlot == 0.
+        if (this.newSumSlot != 0 && this.article.id != article.id) {
+            throw new IllegalArgumentException("Article does not match.");
+        }
+
+        WarehouseBookingPositionSlotEntry e = new WarehouseBookingPositionSlotEntry();
+
+        e.article = article;
+        e.slot = slot;
+
+        e.newSumSlot = newSumSlot + amount;
+
+        assert e.article.warehouseUnitsPerSlot >= e.newSumSlot;
+        assert e.newSumSlot >= 0;
+
+        return e;
+    }
+
+    public static WarehouseBookingPositionSlotEntry empty(Article article, Slot slot) {
+        WarehouseBookingPositionSlotEntry e = new WarehouseBookingPositionSlotEntry();
+
+        e.article = article;
+        e.slot = slot;
+        e.newSumSlot = 0;
+
+        return e;
+    }
+}

web_backend/src/main/java/org/hso/ecommerce/repos/booking/BookingAccountEntryRepository.java

@@ -0,0 +1,28 @@
+package org.hso.ecommerce.repos.booking;
+
+import java.util.Optional;
+
+import org.hso.ecommerce.entities.booking.BookingAccountEntry;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface BookingAccountEntryRepository extends JpaRepository<BookingAccountEntry, Long> {
+
+    @Query(value = "SELECT * FROM booking_account_entries as e WHERE e.user_account_id = :user ORDER BY e.id DESC LIMIT 1", nativeQuery = true)
+    Optional<BookingAccountEntry> getByUser(Long user);
+
+    @Query(value = "SELECT * FROM booking_account_entries as e WHERE e.supplier_account_id = :supplier ORDER BY e.id DESC LIMIT 1", nativeQuery = true)
+    Optional<BookingAccountEntry> getBySupplier(Long supplier);
+
+    @Query(value = "SELECT * FROM booking_account_entries as e WHERE e.is_main_account = 1 ORDER BY e.id DESC LIMIT 1", nativeQuery = true)
+    Optional<BookingAccountEntry> getByMain();
+
+    @Query(value = "SELECT * FROM booking_account_entries as e WHERE e.isvataccount = 1 ORDER BY e.id DESC LIMIT 1", nativeQuery = true)
+    Optional<BookingAccountEntry> getByVat();
+
+
+}
+
+

web_backend/src/main/java/org/hso/ecommerce/repos/booking/BookingRepository.java

@@ -0,0 +1,28 @@
+package org.hso.ecommerce.repos.booking;
+
+import java.util.List;
+
+import org.hso.ecommerce.entities.booking.Booking;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface BookingRepository extends JpaRepository<Booking, Long> {
+
+    @Query("SELECT b FROM Booking b ORDER BY b.id DESC")
+    List<Booking> allBookingsReverseChronologically();
+
+    @Query("SELECT b FROM Booking b LEFT JOIN b.source s LEFT JOIN b.destination d WHERE s.isMainAccount = 1 OR d.isMainAccount = 1 ORDER BY b.id DESC")
+    List<Booking> mainBookingsReverseChronologically();
+
+    @Query("SELECT b FROM Booking b LEFT JOIN b.source s LEFT JOIN b.destination d WHERE s.isVATAccount = 1 OR d.isVATAccount = 1 ORDER BY b.id DESC")
+    List<Booking> vatBookingsReverseChronologically();
+
+    @Query("SELECT b FROM Booking b LEFT JOIN b.source s LEFT JOIN b.destination d WHERE s.userAccount.id = :customerId OR d.userAccount.id = :customerId ORDER BY b.id DESC")
+    List<Booking> customerBookingsReverseChronologically(long customerId);
+
+    @Query("SELECT b FROM Booking b LEFT JOIN b.source s LEFT JOIN b.destination d WHERE s.supplierAccount.id = :supplierId OR d.supplierAccount.id = :supplierId ORDER BY b.id DESC")
+    List<Booking> supplierBookingsReverseChronologically(long supplierId);
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/cronjob/BackgroundJobRepository.java

@@ -0,0 +1,10 @@
+package org.hso.ecommerce.repos.cronjob;
+
+import org.hso.ecommerce.entities.cron.BackgroundJob;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface BackgroundJobRepository extends JpaRepository<BackgroundJob, Long> {
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/dashboard/DashboardSummaryRepository.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.repos.dashboard;
+
+import org.hso.ecommerce.entities.dashboard.DashboardSummary;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+
+@Repository
+public interface DashboardSummaryRepository  extends JpaRepository<DashboardSummary, Long> {
+
+    @Query("SELECT ds FROM DashboardSummary ds ORDER BY ds.id DESC")
+    List<DashboardSummary> findInTimespan(
+            Pageable pageable
+    );
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/shop/ArticleRepository.java

@@ -0,0 +1,53 @@
+package org.hso.ecommerce.repos.shop;
+
+import org.hso.ecommerce.entities.shop.Article;
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface ArticleRepository extends JpaRepository<Article, Long> {
+
+    /***
+     * use findById instead.
+     */
+    @Deprecated
+    @Query("SELECT a FROM Article a WHERE a.id = :articleId")
+    Article findArticleById(@Param("articleId") long articleId);
+
+    @Query("SELECT a FROM Article a")
+    List<Article> findAll();
+
+    @Query(value = "SELECT DISTINCT a.* from articles as a, article_offers as ao, warehouse_booking_position_entries as wbpe where a.related_id = ao.id and wbpe.article_id = a.id and ao.should_be_advertised = true group by wbpe.slot_id having max(wbpe.id) and wbpe.new_sum_slot != 0", nativeQuery = true)
+    List<Article> getAdvertisedArticles();
+
+    @Query("SELECT a FROM CustomerOrderPosition cop JOIN cop.order co JOIN co.customer c JOIN cop.article a ORDER BY co.id DESC")
+    List<Article> getOrderedArticles();
+
+    @Query("SELECT DISTINCT a FROM CustomerOrderPosition cop JOIN cop.order co JOIN co.customer c JOIN cop.article a WHERE c.id = :customerId ORDER BY co.id DESC")
+    List<Article> getOrderedArticles(long customerId);
+
+    /***
+     * use type safe findArticleByArticleOffer instead.
+     */
+    @Deprecated
+    @Query(value = "SELECT a.id FROM articles a WHERE a.related_id = :relatedId", nativeQuery = true)
+    Optional<Integer> findArticleIDByRelatedID(@Param("relatedId") long relatedId);
+
+    @Query(value = "SELECT a FROM Article a Where a.related = :related")
+    Optional<Article> findArticleByArticleOffer(ArticleOffer related);
+
+    @Query(value = "Select a.* from articles as a, warehouse_booking_position_entries as wbpe where wbpe.article_id = a.id and a.title LIKE %:term% group by wbpe.slot_id having max(wbpe.id) and wbpe.new_sum_slot != 0", nativeQuery = true)
+    List<Article> getArticlesByTermInTitle(String term);
+
+    @Query(value = "Select a.* from articles as a, warehouse_booking_position_entries as wbpe where wbpe.article_id = a.id and a.description LIKE %:term% group by wbpe.slot_id having max(wbpe.id) and wbpe.new_sum_slot != 0", nativeQuery = true)
+    List<Article> getArticlesByTermInDescription(String term);
+
+    @Query(value = "Select distinct a.* from articles as a, categories as c, article_categories_bindings as acb, warehouse_booking_position_entries as wbpe where wbpe.article_id = a.id and acb.articles_id = a.id and acb.categories_id = c.id and c.name = :category group by wbpe.slot_id having max(wbpe.id) and wbpe.new_sum_slot != 0", nativeQuery = true)
+    List<Article> getArticlesByCategory(String category);
+}

web_backend/src/main/java/org/hso/ecommerce/repos/shop/CategoryRepository.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.repos.shop;
+
+import org.hso.ecommerce.entities.shop.Category;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface CategoryRepository extends JpaRepository<Category, Long> {
+
+	@Query("SELECT a FROM Category a WHERE a.name = :name")
+	Optional<Category> findCategoryByName(@Param("name") String name);
+
+    @Query("SELECT c FROM Category c")
+    List<Category> getCategories();
+}

web_backend/src/main/java/org/hso/ecommerce/repos/shop/CustomerOrderRepository.java

@@ -0,0 +1,34 @@
+package org.hso.ecommerce.repos.shop;
+
+import org.hso.ecommerce.entities.shop.CustomerOrder;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface CustomerOrderRepository extends JpaRepository<CustomerOrder, Long> {
+
+    @Query("SELECT SUM(cop.quantity) FROM CustomerOrderPosition cop JOIN cop.order co WHERE cop.article.id = :articleId AND co.created >= :begin AND co.created < :end")
+    Integer countOrdersOfArticleInTimespan(
+            long articleId, java.sql.Timestamp begin, java.sql.Timestamp end
+    );
+
+    @Query("SELECT co FROM CustomerOrder co ORDER BY co.id DESC")
+    List<CustomerOrder> getAllOrders();
+
+    @Query("SELECT co FROM CustomerOrder co WHERE co.customer.id = :userId ORDER BY co.id DESC")
+    List<CustomerOrder> getOrdersByUserId(long userId);
+
+    @Query("SELECT COUNT(co.id) FROM CustomerOrder co WHERE co.created >= :begin AND co.created < :end")
+    Integer countOrdersInTimespan(
+            java.sql.Timestamp begin, java.sql.Timestamp end
+    );
+
+    @Query("SELECT SUM(co.totalGrossCent) FROM CustomerOrder co WHERE co.created >= :begin AND co.created < :end")
+    Integer countTurnoverInTimespan(
+            java.sql.Timestamp begin, java.sql.Timestamp end
+    );
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/shop/ImageRepository.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.repos.shop;
+
+import org.hso.ecommerce.entities.shop.Image;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+@Repository
+public interface ImageRepository extends JpaRepository<Image, Long> {
+
+	@Query("SELECT i.id FROM Image i WHERE i.path = :path")
+	Optional<Integer> findImageIDByPath(@Param("path") String path);
+
+	@Query("SELECT i FROM Image i WHERE i.id = :imageId")
+	Image findImageById(@Param("imageId") long imageId);
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/shop/OffersRepository.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.repos.shop;
+
+import java.util.List;
+
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface OffersRepository extends JpaRepository<ArticleOffer, Long> {
+
+	@Query("SELECT a FROM ArticleOffer a")
+	List<ArticleOffer> findAll();
+	
+	@Query("SELECT a FROM ArticleOffer a WHERE a.id = :offeredarticleId")
+	ArticleOffer findOfferedArticleById(@Param("offeredarticleId") long offeredarticleId);
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/supplier/ArticleOfferRepository.java

@@ -0,0 +1,8 @@
+package org.hso.ecommerce.repos.supplier;
+
+import org.hso.ecommerce.entities.supplier.ArticleOffer;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ArticleOfferRepository extends JpaRepository<ArticleOffer, Long> {
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/supplier/SupplierOrderRepository.java

@@ -0,0 +1,25 @@
+package org.hso.ecommerce.repos.supplier;
+
+import org.hso.ecommerce.entities.supplier.SupplierOrder;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface SupplierOrderRepository extends JpaRepository<SupplierOrder, Long> {
+
+	@Query("SELECT SUM(so.numberOfUnits) FROM SupplierOrder so JOIN so.ordered ao WHERE ao.articleNumber = :articleNumber AND so.delivered IS NULL")
+	Integer countUndeliveredReorders(String articleNumber);
+
+	@Query(value = "SELECT * FROM supplier_orders as a WHERE a.supplier_id = :supplierId ORDER BY a.id DESC", nativeQuery = true)
+	List<SupplierOrder> findOrderBySupplierID(@Param("supplierId") long supplierId);
+
+	@Query("SELECT a FROM SupplierOrder a")
+	List<SupplierOrder> findAll();
+
+	@Query("SELECT a FROM SupplierOrder a ORDER BY a.id DESC")
+	List<SupplierOrder> findAllDesc();
+}

web_backend/src/main/java/org/hso/ecommerce/repos/supplier/SupplierRepository.java

@@ -0,0 +1,23 @@
+package org.hso.ecommerce.repos.supplier;
+
+import org.hso.ecommerce.entities.supplier.Supplier;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface SupplierRepository extends JpaRepository<Supplier, Long> {
+
+	@Query("SELECT a FROM Supplier a")
+	List<Supplier> findAll();
+
+	@Query("SELECT a FROM Supplier a WHERE a.id = :supplierId")
+	Supplier findSupplierById(@Param("supplierId") long supplierId);
+
+	@Query("SELECT a FROM Supplier a WHERE a.uuid = :uuid")
+	Optional<Supplier> findByUuid(@Param("uuid") String uuid);
+}

web_backend/src/main/java/org/hso/ecommerce/repos/user/UserRepository.java

@@ -0,0 +1,23 @@
+package org.hso.ecommerce.repos.user;
+
+import org.hso.ecommerce.entities.user.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+@Repository
+public interface UserRepository extends JpaRepository<User, Long> {
+
+	@Query("SELECT c FROM User c WHERE c.email = :email")
+	Optional<User> findByEmail(String email);
+
+    @Query("SELECT COUNT(c.id) FROM User c WHERE c.created >= :begin AND c.created < :end AND c.isEmployee = false")
+    Integer countUsersInTimespan(
+            java.sql.Timestamp begin, java.sql.Timestamp end
+    );
+
+	@Query("SELECT count(*) FROM User WHERE isEmployee = true")
+	Optional<Integer> numberOfEmployees();
+}

web_backend/src/main/java/org/hso/ecommerce/repos/warehouse/SlotRepository.java

@@ -0,0 +1,17 @@
+package org.hso.ecommerce.repos.warehouse;
+
+import org.hso.ecommerce.entities.warehouse.Slot;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+@Repository
+public interface SlotRepository extends JpaRepository<Slot, Long> {
+
+    @Query("SELECT s FROM Slot s WHERE s.slotNum = :slotNum")
+    Optional<Slot> findBySlotNum(int slotNum);
+
+
+}

web_backend/src/main/java/org/hso/ecommerce/repos/warehouse/WarehouseBookingPositionSlotEntryRepository.java

@@ -0,0 +1,21 @@
+package org.hso.ecommerce.repos.warehouse;
+
+import org.hso.ecommerce.entities.warehouse.WarehouseBookingPositionSlotEntry;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface WarehouseBookingPositionSlotEntryRepository extends JpaRepository<WarehouseBookingPositionSlotEntry, Long> {
+
+    @Query(value = "Select e.* from warehouse_booking_position_entries as e, warehouse_slots as s where e.slot_id = s.id AND e.article_id = :article GROUP BY s.slot_num HAVING max(e.id)", nativeQuery = true)
+    List<WarehouseBookingPositionSlotEntry> getByArticle(long article);
+
+    @Query(value = "Select e.* from warehouse_booking_position_entries as e, warehouse_slots as s where e.slot_id = s.id AND s.slot_num = :slotnum GROUP BY s.slot_num HAVING max(e.id)", nativeQuery = true)
+    Optional<WarehouseBookingPositionSlotEntry> getBySlotNum(long slotnum);
+
+}
+

web_backend/src/main/java/org/hso/ecommerce/repos/warehouse/WarehouseBookingRepository.java

@@ -0,0 +1,20 @@
+package org.hso.ecommerce.repos.warehouse;
+
+import org.hso.ecommerce.entities.warehouse.WarehouseBooking;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface WarehouseBookingRepository extends JpaRepository<WarehouseBooking, Long> {
+
+    @Query("Select b FROM WarehouseBooking b WHERE b.isDone = 0")
+    List<WarehouseBooking> findNotDone();
+
+    @Query("Select b FROM WarehouseBooking b ORDER BY b.id DESC")
+    List<WarehouseBooking> findAllDesc();
+
+}
+

web_backend/src/main/java/org/hso/ecommerce/uimodel/DeliveryData.java

@@ -0,0 +1,57 @@
+package org.hso.ecommerce.uimodel;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+
+
+public class DeliveryData
+{
+
+    private final String status;
+
+    private final DeliveryDataEnum deliveryDataEnum;
+
+    private final String estimatedArrival;
+
+    private boolean isDelivered;
+
+    @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
+    public DeliveryData(String status, String estimatedArrival) {
+        this.status = status;
+        this.estimatedArrival = estimatedArrival;
+        this.deliveryDataEnum = DeliveryDataEnum.OK;
+        isDelivered = status.equals("Lieferung erfolgreich");
+    }
+
+    public DeliveryData(String status, String estimatedArrival, DeliveryDataEnum deliveryDataEnum) {
+        this.status = status;
+        this.estimatedArrival = estimatedArrival;
+        this.deliveryDataEnum = deliveryDataEnum;
+        isDelivered = status.equals("Lieferung erfolgreich");
+    }
+
+    public boolean isDelivered() {
+        return isDelivered;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public String getEstimatedArrival() {
+        return estimatedArrival;
+    }
+
+    public boolean allOk() {
+        return deliveryDataEnum == DeliveryDataEnum.OK;
+    }
+
+    public boolean noTrackingID() {
+        return deliveryDataEnum == DeliveryDataEnum.NO_TRACKING_ID;
+    }
+
+    public boolean noData() {
+        return deliveryDataEnum == DeliveryDataEnum.NO_DATA;
+    }
+
+}
+

web_backend/src/main/java/org/hso/ecommerce/uimodel/DeliveryDataEnum.java

@@ -0,0 +1,7 @@
+package org.hso.ecommerce.uimodel;
+
+public enum DeliveryDataEnum {
+    OK,
+    NO_TRACKING_ID,
+    NO_DATA
+}

web_backend/src/main/resources/application-dev.properties

@@ -0,0 +1,9 @@
+# LOGGING
+logging.level.org.springframework.web=INFO
+# resources
+spring.thymeleaf.prefix=file:src/main/resources/templates/
+spring.thymeleaf.cache=false
+spring.resources.static-locations=file:src/main/resources/static/
+spring.resources.cache=false
+spring.resources.cache.cachecontrol.maxAge=P0D
+server.port=8000

web_backend/src/main/resources/application.properties

@@ -0,0 +1,25 @@
+#caching
+spring.resources.cache.cachecontrol.maxAge=P0D
+# LOGGING
+logging.level.org.springframework.web=WARN
+# DATABASE
+spring.datasource.url=jdbc:sqlite:./e-commerce.db
+spring.datasource.driverClassName=org.sqlite.JDBC
+spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.SQLiteDialect
+spring.jpa.hibernate.ddl-auto=update
+spring.jpa.show-sql=true
+# Session
+#spring.session.store-type=jdbc
+#spring.session.jdbc.initialize-schema=always
+#spring.session.jdbc.schema=classpath:org/springframework/session/jdbc/schema-@@platform@@.sql
+#spring.session.jdbc.table-name=SPRING_SESSION
+#server.servlet.session.persistent=true
+server.servlet.session.timeout=48h
+# ----------------------------------------
+# WEB PROPERTIES
+spring.servlet.multipart.max-file-size=10MB
+spring.servlet.multipart.max-request-size=10MB
+# ----------------------------------------
+# EMBEDDED SERVER CONFIGURATION (ServerProperties)
+server.address=::1
+server.port=8080