118 lines
4.2 KiB
Kotlin
118 lines
4.2 KiB
Kotlin
/**
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* ProjectLaogai
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*
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* Copyright 2019 <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 com.google.gson.Gson
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import com.google.gson.GsonBuilder
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import com.google.gson.JsonParser
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import java.io.BufferedReader
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import java.io.File
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import java.io.FileReader
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import com.google.gson.reflect.TypeToken
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import org.mosad.seil0.projectlaogai.hsoparser.*
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import kotlin.collections.ArrayList
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class CacheController(cont: Context) {
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private val context = cont
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companion object {
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var coursesList = ArrayList<Course>()
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var timetables = ArrayList<TimetableWeek>()
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var mensaMenu = MensaMenu(MensaMeta(0, ""), MensaWeek(), MensaWeek())
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/**
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* get the MensaMenu object from the cached json,
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* if cache is empty create the cache file
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*/
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fun readMensa(context: Context) {
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val file = File(context.filesDir, "mensa.json")
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// make sure the file exists
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if (!file.exists()) {
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TCoRAPIController.getMensa(context).get()
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}
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val fileReader = FileReader(file)
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val bufferedReader = BufferedReader(fileReader)
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val mensaObject = JsonParser().parse(bufferedReader.readLine()).asJsonObject
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mensaMenu = GsonBuilder().create().fromJson(mensaObject, MensaMenu(MensaMeta(0, ""), MensaWeek(), MensaWeek()).javaClass)
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}
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/**
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* read the weeks timetable from the cached file
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* @param courseName the course name (e.g AI1)
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* @param week the week to read (0 for the current and so on)
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*/
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fun readTimetable(courseName: String, week: Int, context: Context) {
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val file = File(context.filesDir, "timetable-$courseName-$week.json")
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// make sure the file exists
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if (!file.exists())
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TCoRAPIController.getTimetable(courseName, week, context).get()
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val fileReader = FileReader(file)
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val bufferedReader = BufferedReader(fileReader)
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val timetableObject = JsonParser().parse(bufferedReader.readLine()).asJsonObject
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// make sure you add the single weeks in the exact order!
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if (timetables.size == week) {
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timetables.add(Gson().fromJson(timetableObject.getAsJsonObject("timetable"), TimetableWeek().javaClass))
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} else if (timetables.size >= week) {
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timetables[week] = Gson().fromJson(timetableObject.getAsJsonObject("timetable"), TimetableWeek().javaClass)
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}
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}
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}
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/**
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* read coursesList, mensa (current and next week), timetable (current and next week)
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* @param courseName the course name (e.g AI1)
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*/
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fun readStartCache(courseName: String) {
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readCoursesList()
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readMensa(context)
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readTimetable(courseName, 0, context)
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readTimetable(courseName, 1, context)
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}
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/**
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* read the courses list from the cached file
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* add them to the coursesList object
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*/
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private fun readCoursesList() {
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val file = File(context.filesDir, "courses.json")
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// make sure the file exists
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if (!file.exists())
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TCoRAPIController(context).getCoursesList().get()
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val fileReader = FileReader(file)
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val bufferedReader = BufferedReader(fileReader)
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val coursesObject = JsonParser().parse(bufferedReader.readLine()).asJsonObject
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coursesList = Gson().fromJson(coursesObject.getAsJsonArray("courses"), object : TypeToken<List<Course>>() {}.type)
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}
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} |