175 lines
6.8 KiB
Kotlin
175 lines
6.8 KiB
Kotlin
/**
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* ProjectLaogai
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*
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* Copyright 2019-2020 <seil0@mosad.xyz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.mosad.seil0.projectlaogai.controller
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import android.content.Context
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import android.util.Log
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import com.google.gson.Gson
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import com.google.gson.GsonBuilder
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import kotlinx.coroutines.*
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import org.json.JSONObject
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import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.coursesCacheTime
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import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.mensaCacheTime
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import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.timetableCacheTime
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import org.mosad.seil0.projectlaogai.hsoparser.CoursesList
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import org.mosad.seil0.projectlaogai.hsoparser.Lesson
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import org.mosad.seil0.projectlaogai.hsoparser.MensaMenu
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import org.mosad.seil0.projectlaogai.hsoparser.TimetableCourseWeek
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import java.io.BufferedWriter
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import java.io.File
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import java.io.FileWriter
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import java.net.URL
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class TCoRAPIController {
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companion object {
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private const val className = "TCoRAPIController"
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private const val tcorBaseURL = "https://tcor.mosad.xyz"
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/**
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* Get a array of all currently available courses at the tcor API.
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* Read the json object from tcor api and write it as file (cache).
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*/
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fun getCoursesList(context: Context): Job {
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val url = URL("$tcorBaseURL/courseList")
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val file = File(context.filesDir, "courses.json")
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return GlobalScope.launch(Dispatchers.IO) {
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try {
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// read data from the API
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val coursesObject = JSONObject(url.readText())
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// write the json object to a file
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val writer = BufferedWriter(FileWriter(file))
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writer.write(coursesObject.toString())
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writer.close()
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// update cache time
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coursesCacheTime = System.currentTimeMillis() / 1000
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PreferencesController.save(context)
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} catch (ex: Exception) {
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Log.e(className, "failed to get /courseList", ex)
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// write a empty file, since it is loaded later
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val writer = BufferedWriter(FileWriter(file))
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writer.write(GsonBuilder().create().toJson(CoursesList()))
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writer.close()
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}
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}
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}
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/**
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* Get this and next weeks mensa menus from the tcor API.
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* Read the json object from tcor api and write it as file (cache).
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*/
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fun getMensaMenu(context: Context): Job {
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val url = URL("$tcorBaseURL/mensamenu")
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val file = File(context.filesDir, "mensa.json")
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return GlobalScope.launch(Dispatchers.IO) {
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try {
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// read data from the API
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val mensaObject = JSONObject(url.readText())
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// write the json object to a file
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val writer = BufferedWriter(FileWriter(file))
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writer.write(mensaObject.toString())
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writer.close()
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// update cache time
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mensaCacheTime = System.currentTimeMillis() / 1000
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PreferencesController.save(context)
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} catch (ex: Exception) {
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Log.e(className, "failed to get /mensamenu", ex)
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// write a empty file, since it is loaded later
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val writer = BufferedWriter(FileWriter(file))
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writer.write(GsonBuilder().create().toJson(MensaMenu()))
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writer.close()
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}
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}
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}
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/**
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* Get the timetable for @param courseName at week @param week
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* Read the json object from tcor api and write it as file (cache).
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*/
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fun getTimetable(courseName: String, week: Int, context: Context): Job {
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val url = URL("$tcorBaseURL/timetable?course=$courseName&week=$week")
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val file = File(context.filesDir, "timetable-$courseName-$week.json")
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return GlobalScope.launch(Dispatchers.IO) {
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try {
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// read data from the API
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val timetableObject = JSONObject(url.readText())
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// write the json object to a file
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val writer = BufferedWriter(FileWriter(file))
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writer.write(timetableObject.toString())
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writer.close()
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// update cache time
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timetableCacheTime = System.currentTimeMillis() / 1000
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PreferencesController.save(context)
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} catch (ex: Exception) {
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Log.e(className, "failed to get /timetable", ex)
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// write a empty file, since it is loaded later
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val writer = BufferedWriter(FileWriter(file))
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writer.write(GsonBuilder().create().toJson(TimetableCourseWeek()))
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writer.close()
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}
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}
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}
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/**
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* Get all lessons for a course at one week (async)
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* @param courseName the course name
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* @param week the week to look up
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*/
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fun getLessonSubjectListAsync(courseName: String, week: Int): Deferred<ArrayList<String>> {
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val url = URL("$tcorBaseURL/subjectList?course=$courseName&week=$week")
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return GlobalScope.async {
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Gson().fromJson(url.readText(), ArrayList<String>()::class.java)
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}
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}
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/**
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* Get all occurrences of a lesson for a course at one week
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* @param courseName the course name
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* @param subject the subject to search for
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* @param week the week to look up
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*/
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fun getLessonsAsync(courseName: String, subject: String, week: Int): Deferred<ArrayList<Lesson>> {
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val url = URL("$tcorBaseURL/lessons?course=$courseName&subject=$subject&week=$week")
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return GlobalScope.async {
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Gson().fromJson(url.readText(), ArrayList<Lesson>()::class.java)
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}
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}
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}
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} |