added a configuration via config.xml file

* the config file contains the Mensa name and URL, the Cachet Base-URL and API-Key

src/main/kotlin/org/mosad/thecitadelofricks/controller/StartupController.kt

@@ -0,0 +1,136 @@
+/**
+ * TheCitadelofRicks
+ *
+ * Copyright 2019  <seil0@mosad.xyz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+
+package org.mosad.thecitadelofricks.controller
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileOutputStream
+import java.util.*
+
+class StartupController {
+
+    private val logger: Logger = LoggerFactory.getLogger(CacheController::class.java)
+
+    private val userHome = System.getProperty("user.home")
+    private val tcorHome = "$userHome/.tcor"
+    private val dirTcorHome = File(tcorHome)
+    private val dirTcorCache = File("$tcorHome/cache")
+    private val fileConfig = File("$tcorHome/config.xml")
+
+    init {
+        // if the tcor directory doesn't exist, create it
+        if (!dirTcorHome.exists()) {
+            dirTcorHome.mkdir()
+        }
+
+        // if the cache directory doesn't exist, create it
+        if (!dirTcorCache.exists()) {
+            dirTcorCache.mkdir()
+        }
+
+        // check if the config file exist, if so load it
+        if (fileConfig.exists()) {
+            loadConfig()
+        } else {
+            createConfig()
+        }
+    }
+
+    private fun loadConfig() = try {
+        val properties = Properties()
+        properties.loadFromXML(FileInputStream(fileConfig))
+
+        cachetAPIKey = try {
+            properties.getProperty("cachetAPIKey")
+        } catch (ex: Exception) {
+            "0"
+        }
+
+        cachetBaseURL = try {
+            properties.getProperty("cachetBaseURL")
+        } catch (ex: Exception) {
+            "https://status.mosad.xyz"
+        }
+
+        mensaMenuURL = try {
+            properties.getProperty("mensaMenuURL")
+        } catch (ex: Exception) {
+            "https://www.swfr.de/de/essen-trinken/speiseplaene/mensa-offenburg/"
+        }
+
+        mensaName = try {
+            properties.getProperty("mensaName")
+        } catch (ex: Exception) {
+            "Offenburg"
+        }
+
+    } catch (ex: Exception) {
+        logger.error("error while loading config", ex)
+    }
+
+    private fun createConfig() = try {
+        val properties = Properties()
+
+        properties.setProperty("cachetAPIKey", "0")
+        properties.setProperty("cachetBaseURL", "https://status.mosad.xyz")
+        properties.setProperty("mensaMenuURL", "https://www.swfr.de/de/essen-trinken/speiseplaene/mensa-offenburg/")
+        properties.setProperty("mensaName", "Offenburg")
+
+        val outputStream = FileOutputStream(fileConfig)
+        properties.storeToXML(outputStream, "tcor configuration")
+        outputStream.close()
+    } catch (ex: Exception) {
+        logger.error("error while creating config", ex)
+    }
+
+    companion object {
+        private var cachetAPIKey = "0"
+        private var cachetBaseURL = "https://status.mosad.xyz"
+        private var courseListURL = "https://www.hs-offenburg.de/studium/vorlesungsplaene/"
+        private var mensaMenuURL = "https://www.swfr.de/de/essen-trinken/speiseplaene/mensa-offenburg/"
+        private var mensaName = "Offenburg"
+
+        fun getCachetAPIKey(): String {
+            return cachetAPIKey
+        }
+
+        fun getCachetBaseURL(): String {
+            return cachetBaseURL
+        }
+
+        fun getCourseListURL(): String {
+            return courseListURL
+        }
+
+        fun getMensaMenuURL(): String {
+            return mensaMenuURL
+        }
+        fun getMensaName(): String {
+            return mensaName
+        }
+
+    }
+
+}