ref: 8bef2267a842dff2358ee37c4ae74c22deec0973
app/src/main/java/ml/adamsprogs/bimba/models/FavouriteStorage.kt
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package ml.adamsprogs.bimba.models import android.content.Context import android.content.SharedPreferences import com.google.gson.Gson import com.google.gson.JsonArray import com.google.gson.JsonObject import ml.adamsprogs.bimba.MessageReceiver import ml.adamsprogs.bimba.models.gtfs.AgencyAndId import ml.adamsprogs.bimba.secondsAfterMidnight import java.util.Calendar class FavouriteStorage private constructor(context: Context) : Iterable<Favourite> { companion object { private var favouriteStorage: FavouriteStorage? = null fun getFavouriteStorage(context: Context? = null): FavouriteStorage { return if (favouriteStorage == null) { if (context == null) throw IllegalArgumentException("requested new storage appContext not given") else { favouriteStorage = FavouriteStorage(context) favouriteStorage as FavouriteStorage } } else favouriteStorage as FavouriteStorage } } val favourites = HashMap<String, Favourite>() private val positionIndex = ArrayList<String>() private val preferences: SharedPreferences = context.getSharedPreferences("ml.adamsprogs.bimba.prefs", Context.MODE_PRIVATE) init { val favouritesString = preferences.getString("favourites", "{}") val favouritesMap = Gson().fromJson(favouritesString, JsonObject::class.java) for ((name, jsonTimetables) in favouritesMap.entrySet()) { val timetables = HashSet<StopSegment>() jsonTimetables.asJsonArray.mapTo(timetables) { val stopSegment = StopSegment(AgencyAndId(it.asJsonObject["stop"].asString), null) val plates = HashSet<Plate.ID>() it.asJsonObject["plates"].asJsonArray.mapTo(plates) { Plate.ID(AgencyAndId(it.asJsonObject["line"].asString), AgencyAndId(it.asJsonObject["stop"].asString), it.asJsonObject["headsign"].asString) } stopSegment.plates = plates stopSegment } favourites[name] = Favourite(name, timetables) positionIndex.add(name) } positionIndex.sort() } override fun iterator(): Iterator<Favourite> = favourites.values.iterator() fun has(name: String): Boolean = favourites.contains(name) fun add(name: String, timetables: HashSet<StopSegment>) { if (favourites[name] == null) { favourites[name] = Favourite(name, timetables) addIndex(name) serialize() } } fun add(name: String, favourite: Favourite) { if (favourites[name] == null) { favourites[name] = favourite addIndex(name) serialize() } } private fun addIndex(name:String) { positionIndex.apply { this.add(name) this.sort() } } fun delete(name: String) { favourites.remove(name) positionIndex.remove(name) serialize() } fun delete(name: String, plate: Plate.ID) { favourites[name]?.delete(plate) serialize() } private fun serialize() { val rootObject = JsonObject() for ((name, favourite) in favourites) { val timetables = JsonArray() for (timetable in favourite.segments) { val segment = JsonObject() segment.addProperty("stop", timetable.stop.id) val plates = JsonArray() for (plate in timetable.plates ?: HashSet()) { val element = JsonObject() element.addProperty("stop", plate.stop.id) element.addProperty("line", plate.line.id) element.addProperty("headsign", plate.headsign) plates.add(element) } segment.add("plates", plates) timetables.add(segment) } rootObject.add(name, timetables) } val favouritesString = Gson().toJson(rootObject) val editor = preferences.edit() editor.putString("favourites", favouritesString) editor.apply() } fun merge(names: List<String>) { if (names.size < 2) return val newCache = HashMap<AgencyAndId, ArrayList<Departure>>() names.forEach { favourites[it]!!.fullDepartures.forEach { if (newCache[it.key] == null) newCache[it.key] = ArrayList() newCache[it.key]!!.addAll(it.value) } } val now = Calendar.getInstance().secondsAfterMidnight() newCache.forEach { it.value.sortBy { it.timeTill(now) } } val newFavourite = Favourite(names[0], HashSet(), newCache) for (name in names) { newFavourite.segments.addAll(favourites[name]!!.segments) favourites.remove(name) positionIndex.remove(name) } favourites[names[0]] = newFavourite addIndex(names[0]) serialize() } fun rename(oldName: String, newName: String) { val favourite = favourites[oldName] ?: return favourite.rename(newName) favourites.remove(oldName) positionIndex.remove(oldName) favourites[newName] = favourite addIndex(newName) serialize() } fun registerOnVm(receiver: MessageReceiver, context: Context) { favourites.values.forEach { it.registerOnVm(receiver, context) } } fun deregisterOnVm(receiver: MessageReceiver, context: Context) { favourites.values.forEach { it.deregisterOnVm(receiver, context) } } operator fun get(name: String): Favourite? { return favourites[name] } operator fun get(position: Int): Favourite? { return favourites[positionIndex[position]] } fun indexOf(name: String): Int { return positionIndex.indexOf(name) } val size get() = favourites.size } |