added spring and a API specific stuff

this commit adds a fully working API wit /courses, /timetable?courseName=[course] and /mensamenu

src/main/kotlin/org/mosad/thecitadelofricks/hsoparser/TimetableParser.kt

@@ -0,0 +1,148 @@
+/**
+ * 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.hsoparser
+
+import org.jsoup.Jsoup
+import org.mosad.thecitadelofricks.Lesson
+import org.mosad.thecitadelofricks.TimetableWeek
+
+class TimetableParser {
+    private val days = arrayOf("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
+
+    /**
+     * get the timetable from the given url
+     * the timetable is organised per row not per column;
+     * Mon 1, Tue 1, Wed 1, Thur 1, Fri 1, Sat 1, Mon 2 and so on
+     */
+    fun getTimeTable(courseTTURL: String): TimetableWeek {
+        val timetableWeek = TimetableWeek()
+        val scheduleHTML = Jsoup.connect(courseTTURL).get()
+
+        //val week = scheduleHTML.select("h1.timetable-caption").text()
+        //println("$week successful!\n")
+
+        val rows = scheduleHTML.select("table.timetable").select("tr[scope=\"row\"]")
+        var sDay = -1
+        var sRow = -1
+        var sLesson = Lesson("", "", "", "", "")
+
+        // get each row with index, reflects 1 timeslot per day
+        for ((rowIndex, row) in rows.withIndex()) {
+            var day = 0
+
+            // elements are now all lessons, including empty ones
+            row.select("td.lastcol, td[style]").forEachIndexed {elementIndex, element ->
+
+                // if there is a lecture with rowspan="2", we need to shift everything by one to the left. This is stupid and ugly there needs to bee an API
+                if ((sDay > -1 && sRow > -1) && (sDay == day && ((sRow + 1) == rowIndex))) {
+                    // we found a lecture that is longer than 1 lesson
+                    timetableWeek.days[day].timeslots[rowIndex].add(sLesson) // this just works if there is one lecture per slot
+
+                    // adjust the following slot
+                    sDay++
+                    sLesson = Lesson(
+                        "$day.$rowIndex.$elementIndex",
+                        element.select("div.lesson-subject").text(),
+                        element.select("div.lesson-teacher").text(),
+                        element.select("div.lesson-room").text(),
+                        element.select("div.lesson-remark").text()
+                    )
+
+                    // adjust the slot directly as we don't get there anymore
+                    if (sDay == 5) {
+                        timetableWeek.days[day + 1].timeslots[rowIndex].add(sLesson)
+                    }
+
+                } else {
+                    timetableWeek.days[day].timeslots[rowIndex].add(
+                        Lesson(
+                            "$day.$rowIndex.$elementIndex",
+                            element.select("div.lesson-subject").text(),
+                            element.select("div.lesson-teacher").text(),
+                            element.select("div.lesson-room").text(),
+                            element.select("div.lesson-remark").text()
+                        )
+                    )
+                }
+
+                // we found a lecture with rowspan="2", save day, row and lesson for later adjustment
+                if (element.toString().contains("rowspan=\"2\"")) {
+                    sDay = day
+                    sRow = rowIndex
+                    sLesson = timetableWeek.days[day].timeslots[rowIndex].get(index = 0)
+                }
+
+                if (element.hasClass("lastcol")) day++
+            }
+
+        }
+
+        //printTimetableWeek(timetableWeek)
+
+        return timetableWeek
+    }
+
+    @Suppress("unused")
+    fun printTimetableWeek(timetable: TimetableWeek) {
+        for (j in 0..5) print(days[j].padEnd(75, ' ') + " | ")
+        println()
+        for (j in 0..5) print("-".padEnd(76 + (j.toFloat().div(j).toInt()), '-') + "+")
+        println()
+
+        // the timeslot
+        for (i in 0..5) {
+
+            for (j in 0..5) {
+                val ldiff = if (timetable.days[j].timeslots[i].size == 0) 1 else timetable.days[j].timeslots[i].size
+
+                for (lesson in timetable.days[j].timeslots[i]) print(lesson.lessonSubject.padEnd(75 / ldiff, ' '))
+                if (ldiff == 2) print(" ")
+                print(" | ")
+            }
+            println()
+
+            for (j in 0..5) {
+                val ldiff = if (timetable.days[j].timeslots[i].size == 0) 1 else timetable.days[j].timeslots[i].size
+
+                for (lesson in timetable.days[j].timeslots[i]) print(lesson.lessonTeacher.padEnd(75 / ldiff, ' '))
+                if (ldiff == 2) print(" ")
+                print(" | ")
+            }
+            println()
+
+            for (j in 0..5) {
+                val ldiff = if (timetable.days[j].timeslots[i].size == 0) 1 else timetable.days[j].timeslots[i].size
+
+                for (lesson in timetable.days[j].timeslots[i]) print(lesson.lessonRoom.padEnd(75 / ldiff, ' '))
+                if (ldiff == 2) print(" ")
+                print(" | ")
+            }
+            println()
+
+            for (j in 0..5) print("-".padEnd(76 + (j.toFloat().div(j).toInt()), '-') + "+")
+            println()
+        }
+
+        println(" \n")
+    }
+}