You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
375 lines
14 KiB
375 lines
14 KiB
/** |
|
* ProjectLaogai |
|
* |
|
* Copyright 2019-2020 <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.seil0.projectlaogai.controller.cache |
|
|
|
import android.content.Context |
|
import android.util.Log |
|
import com.google.gson.Gson |
|
import com.google.gson.GsonBuilder |
|
import com.google.gson.JsonParser |
|
import com.google.gson.reflect.TypeToken |
|
import kotlinx.coroutines.* |
|
import org.mosad.seil0.projectlaogai.controller.PreferencesController |
|
import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.cCourse |
|
import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.coursesCacheTime |
|
import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.mensaCacheTime |
|
import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.timetableCacheTime |
|
import org.mosad.seil0.projectlaogai.controller.TCoRAPIController |
|
import org.mosad.seil0.projectlaogai.util.* |
|
import java.io.* |
|
import java.util.* |
|
import kotlin.collections.ArrayList |
|
|
|
/** |
|
* The cacheController reads and updates the cache files. |
|
* It contains the courseList and mensaMenu object, all timetable objects |
|
* are located in TimetableController. |
|
*/ |
|
class CacheController(cont: Context) { |
|
|
|
private val className = "CacheController" |
|
private val context = cont |
|
|
|
init { |
|
val cal = Calendar.getInstance() |
|
val currentDay = Calendar.getInstance().get(Calendar.DAY_OF_WEEK) |
|
val currentTime = System.currentTimeMillis() / 1000 |
|
|
|
// check if we need to update the mensa data before displaying it |
|
cal.time = Date(mensaCacheTime * 1000) |
|
|
|
// if a) it's monday and the last cache update was on sunday or b) the cache is older than 24hr, update blocking |
|
if ((currentDay == Calendar.MONDAY && cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) || (currentTime - mensaMenu.meta.updateTime) > 86400) { |
|
Log.i(className, "update mensa blocking") |
|
GlobalScope.launch(Dispatchers.Default) { updateMensaMenu(context).join() } |
|
} |
|
|
|
// check if we need to update the timetable before displaying it |
|
cal.time = Date(timetableCacheTime * 1000) |
|
|
|
// if a) it`s monday and the last cache update was not on a sunday or b) the cache is older than 24hr, update blocking |
|
if ((currentDay == Calendar.MONDAY && cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) || (currentTime - timetableCacheTime) > 86400) { |
|
Log.i(className, "updating timetable after sunday!") |
|
|
|
GlobalScope.launch(Dispatchers.Default) { |
|
val threads = listOf( |
|
updateTimetable(cCourse.courseName, 0, context), |
|
updateTimetable(cCourse.courseName, 1, context) |
|
) |
|
threads.joinAll() |
|
} |
|
} |
|
|
|
updateCourseList(context) |
|
|
|
readStartCache(cCourse.courseName) // initially read values from cache |
|
|
|
// check if an update is necessary, not blocking |
|
if (currentTime - coursesCacheTime > 86400) |
|
updateCourseList(context) |
|
|
|
if (currentTime - mensaCacheTime > 10800) |
|
updateMensaMenu(context) |
|
|
|
if (currentTime - timetableCacheTime > 10800) { |
|
TimetableController.update(context) |
|
} |
|
|
|
} |
|
|
|
companion object { |
|
private const val className = "CacheController" |
|
var coursesList = ArrayList<Course>() |
|
var mensaMenu = MensaMenu() |
|
|
|
/** |
|
* update the course list, async |
|
*/ |
|
fun updateCourseList(context: Context): Job { |
|
val file = File(context.filesDir, "courses.json") |
|
var courseListUp = CoursesList() |
|
|
|
return GlobalScope.launch(Dispatchers.IO) { |
|
try { |
|
courseListUp = TCoRAPIController.getCourseListNEW() |
|
} catch (ex: Exception) { |
|
Log.e(className, "could not load course list from tcor", ex) |
|
} |
|
|
|
// update coursesList array list |
|
coursesList = courseListUp.courses |
|
|
|
// save cache file and update time |
|
save(file, Gson().toJson(courseListUp)) |
|
coursesCacheTime = System.currentTimeMillis() / 1000 |
|
PreferencesController.save(context) |
|
} |
|
} |
|
|
|
/** |
|
* update the mensa menu, async |
|
*/ |
|
fun updateMensaMenu(context: Context): Job { |
|
val file = File(context.filesDir, "mensa.json") |
|
|
|
return GlobalScope.launch(Dispatchers.IO) { |
|
try { |
|
mensaMenu = TCoRAPIController.getMensaMenu() |
|
} catch (ex: Exception) { |
|
Log.e(className, "could not load mensa menu from tcor", ex) |
|
} |
|
|
|
// save cache file and update time |
|
save(file, Gson().toJson(mensaMenu)) |
|
mensaCacheTime = System.currentTimeMillis() / 1000 |
|
PreferencesController.save(context) |
|
} |
|
} |
|
|
|
/** |
|
* update the timetable for a week, async |
|
* @param courseName the course name (e.g AI1) |
|
* @param week the week to update (0 for the current and so on) |
|
*/ |
|
fun updateTimetable(courseName: String, week: Int, context: Context): Job { |
|
val file = File(context.filesDir, "timetable-$courseName-$week.json") |
|
var timetable = TimetableWeek() |
|
|
|
// try to update timetable from tcor, async |
|
return GlobalScope.launch(Dispatchers.IO) { |
|
try { |
|
timetable = TCoRAPIController.getTimetable(courseName, week) |
|
} catch (ex: Exception) { |
|
Log.e(className, "could not load timetable $courseName[$week] from tcor", ex) |
|
} |
|
|
|
// update timetable in TTC |
|
if (TimetableController.timetable.size > week) { |
|
TimetableController.timetable[week] = timetable |
|
} else { |
|
TimetableController.timetable.add(timetable) |
|
} |
|
|
|
// save cache file and update time |
|
save(file, Gson().toJson(timetable)) |
|
timetableCacheTime = System.currentTimeMillis() / 1000 |
|
PreferencesController.save(context) |
|
} |
|
} |
|
|
|
/** |
|
* update all additional subject lessons, async |
|
*/ |
|
fun updateAdditionalLessons(context: Context): Job { |
|
val fileLessons = File(context.filesDir, "additional_lessons.json") |
|
|
|
return GlobalScope.launch(Dispatchers.IO) { |
|
TimetableController.subjectMap.forEach { (courseName, subjects) -> |
|
// update all subjects for a course |
|
subjects.forEach {subject -> |
|
try { |
|
TCoRAPIController.getLessons(courseName, subject, 0).forEach { lesson -> |
|
TimetableController.addLesson(courseName, subject, lesson) |
|
} |
|
} catch (ex: Exception) { |
|
Log.e(className, "could not load $courseName: $subject", ex) |
|
} |
|
} |
|
} |
|
|
|
save(fileLessons, Gson().toJson(TimetableController.lessonMap)) |
|
} |
|
} |
|
|
|
/** |
|
* save changes in lessonMap and subjectMap, |
|
* called on addSubject or removeSubject |
|
*/ |
|
fun saveAdditionalSubjects(context: Context) { |
|
val fileLessons = File(context.filesDir, "additional_lessons.json") |
|
val fileSubjects = File(context.filesDir, "additional_subjects.json") |
|
|
|
save(fileLessons, Gson().toJson(TimetableController.lessonMap)) |
|
save(fileSubjects, Gson().toJson(TimetableController.subjectMap)) |
|
} |
|
|
|
private fun save(file: File, text: String) { |
|
try { |
|
val writer = BufferedWriter(FileWriter(file)) |
|
writer.write(text) |
|
writer.close() |
|
} catch (ex: Exception) { |
|
Log.e(className, "failed to write file \"${file.absoluteFile}\"", ex) |
|
} |
|
} |
|
|
|
} |
|
|
|
/** |
|
* read coursesList, mensa (current and next week), timetable (current and next week) |
|
* @param courseName the course name (e.g AI1) |
|
*/ |
|
private fun readStartCache(courseName: String) { |
|
try { |
|
readCoursesList() |
|
} catch (ex : Exception) { |
|
Log.e(className, "Error while reading the course list", ex) |
|
} |
|
|
|
try { |
|
readMensa() |
|
} catch (ex : Exception) { |
|
Log.e(className, "Error while reading the mensa menu", ex) |
|
} |
|
|
|
try { |
|
readTimetable(courseName, 0) |
|
} catch (ex : Exception) { |
|
Log.e(className, "Error while reading timetable week 0", ex) |
|
} |
|
|
|
try { |
|
readTimetable(courseName, 1) |
|
} catch (ex : Exception) { |
|
Log.e(className, "Error while reading timetable week 1", ex) |
|
} |
|
|
|
try { |
|
readAdditionalSubjects() |
|
} catch (ex : Exception) { |
|
Log.e(className, "Error while reading additional subjects", ex) |
|
} |
|
} |
|
|
|
/** |
|
* read the courses list from the cached file |
|
* add them to the coursesList object |
|
*/ |
|
private fun readCoursesList() { |
|
val file = File(context.filesDir, "courses.json") |
|
|
|
// make sure the file exists |
|
if (!file.exists()) { |
|
runBlocking { updateCourseList(context).join() } |
|
return |
|
} |
|
|
|
coursesList = FileReader(file).use { |
|
GsonBuilder().create().fromJson(BufferedReader(it).readLine(), CoursesList().javaClass).courses |
|
} |
|
} |
|
|
|
/** |
|
* get the MensaMenu object from the cached json, |
|
* if cache is empty create the cache file |
|
*/ |
|
private fun readMensa() { |
|
val file = File(context.filesDir, "mensa.json") |
|
|
|
// make sure the file exists |
|
if (!file.exists()) { |
|
runBlocking { updateMensaMenu(context).join() } |
|
return |
|
} |
|
|
|
mensaMenu = FileReader(file).use { |
|
GsonBuilder().create().fromJson(BufferedReader(it).readLine(), MensaMenu().javaClass) |
|
} |
|
} |
|
|
|
/** |
|
* read the weeks timetable from the cached file |
|
* @param courseName the course name (e.g AI1) |
|
* @param week the week to read (0 for the current and so on) |
|
*/ |
|
private fun readTimetable(courseName: String, week: Int) { |
|
val file = File(context.filesDir, "timetable-$courseName-$week.json") |
|
|
|
// if the file does not exist, call updateTimetable blocking and return |
|
if (!file.exists()) { |
|
runBlocking { updateTimetable(courseName, week, context).join() } |
|
return |
|
} |
|
|
|
val timetableObject = FileReader(file).use { |
|
JsonParser.parseString(BufferedReader(it).readLine()).asJsonObject |
|
} |
|
|
|
// if its a TimetableCourseWeek object migrate to TimetableWeek TODO remove converting at version 0.8 |
|
val timetable = if(timetableObject.has("meta")) { |
|
Log.i(Companion.className, "trying to migrate TimetableCourseWeek to TimetableWeek") |
|
val timetableWC = Gson().fromJson(timetableObject, TimetableCourseWeek().javaClass) |
|
save(file, Gson().toJson(TimetableWeek( |
|
timetableWC.meta.weekIndex, |
|
timetableWC.meta.weekNumberYear, |
|
timetableWC.timetable.days |
|
))) |
|
TimetableWeek(timetableWC.meta.weekIndex, timetableWC.meta.weekNumberYear, timetableWC.timetable.days) |
|
} else { |
|
Gson().fromJson(timetableObject, TimetableWeek().javaClass) |
|
} |
|
|
|
// update timetable in TTC |
|
if (TimetableController.timetable.size > week) { |
|
TimetableController.timetable[week] = timetable |
|
} else { |
|
TimetableController.timetable.add(timetable) |
|
} |
|
} |
|
|
|
private fun readAdditionalSubjects() { |
|
val fileLessons = File(context.filesDir, "additional_lessons.json") |
|
val fileSubjects = File(context.filesDir, "additional_subjects.json") |
|
|
|
// make sure the file exists |
|
if (!fileLessons.exists() || !fileSubjects.exists()) { |
|
return |
|
} |
|
|
|
// clear the maps before loading, just to be save |
|
TimetableController.lessonMap.clear() |
|
TimetableController.subjectMap.clear() |
|
|
|
// read subjects and lessons from cache file |
|
FileReader(fileLessons).use { |
|
TimetableController.lessonMap.putAll( |
|
GsonBuilder().create() |
|
.fromJson(BufferedReader(it).readLine(), object : TypeToken<HashMap<String, Lesson>>() {}.type) |
|
) |
|
} |
|
|
|
FileReader(fileSubjects).use { |
|
TimetableController.subjectMap.putAll( |
|
GsonBuilder().create() |
|
.fromJson(BufferedReader(it).readLine(), HashMap<String, ArrayList<String>>().javaClass) |
|
) |
|
} |
|
|
|
// add lessons to timetable |
|
TimetableController.lessonMap.forEach { (_, lesson) -> |
|
TimetableController.addLessonToTimetable(lesson) |
|
} |
|
|
|
} |
|
|
|
} |