ref: a18670b57039a2193fb8bd452fac6bf6c62051f8
app/src/main/java/ml/adamsprogs/bimba/models/Timetable.kt
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package ml.adamsprogs.bimba.models import android.content.Context import android.database.CursorIndexOutOfBoundsException import android.database.sqlite.SQLiteCantOpenDatabaseException import android.database.sqlite.SQLiteDatabase import android.database.sqlite.SQLiteDatabaseCorruptException import ml.adamsprogs.bimba.CacheManager import java.io.File class Timetable private constructor() { companion object { val version = 1 val MODE_WORKDAYS = "workdays" val MODE_SATURDAYS = "saturdays" val MODE_SUNDAYS = "sundays" private var timetable: Timetable? = null fun getTimetable(context: Context? = null, force: Boolean = false): Timetable { if (timetable == null || force) if (context != null) { val db: SQLiteDatabase? try { db = SQLiteDatabase.openDatabase(File(context.filesDir, "timetable.db").path, null, SQLiteDatabase.OPEN_READONLY) } catch (e: NoSuchFileException) { throw SQLiteCantOpenDatabaseException("no such file") } catch (e: SQLiteCantOpenDatabaseException) { throw SQLiteCantOpenDatabaseException("cannot open db") } catch (e: SQLiteDatabaseCorruptException) { throw SQLiteCantOpenDatabaseException("db corrupt") } timetable = Timetable() timetable!!.db = db timetable!!.cacheManager = CacheManager.getCacheManager(context) return timetable as Timetable } else throw IllegalArgumentException("new timetable requested and no context given") else return timetable as Timetable } } lateinit var db: SQLiteDatabase private lateinit var cacheManager: CacheManager private var _stops: ArrayList<StopSuggestion>? = null fun refresh(context: Context) { val db: SQLiteDatabase? try { db = SQLiteDatabase.openDatabase(File(context.filesDir, "timetable.db").path, null, SQLiteDatabase.OPEN_READONLY) } catch (e: NoSuchFileException) { throw SQLiteCantOpenDatabaseException("no such file") } catch (e: SQLiteCantOpenDatabaseException) { throw SQLiteCantOpenDatabaseException("cannot open db") } catch (e: SQLiteDatabaseCorruptException) { throw SQLiteCantOpenDatabaseException("db corrupt") } this.db = db cacheManager.recreate(getStopDeparturesByPlates(cacheManager.keys().toSet() as HashSet<Plate>)) //todo optimise } fun getStops(): ArrayList<StopSuggestion> { if (_stops != null) return _stops!! val stops = ArrayList<StopSuggestion>() val cursor = db.rawQuery("select name ||char(10)|| headsigns as suggestion, id, stops.symbol || number as stopSymbol from stops" + " join nodes on(stops.symbol = nodes.symbol) order by name, id;", null) while (cursor.moveToNext()) stops.add(StopSuggestion(cursor.getString(0), cursor.getString(1), cursor.getString(2))) cursor?.close() _stops = stops return stops } fun getStopName(stopId: String): String { val cursor = db.rawQuery("select name from nodes join stops on(stops.symbol = nodes.symbol) where id = ?;", listOf(stopId).toTypedArray()) val name: String cursor.moveToNext() name = cursor.getString(0) cursor.close() return name } fun getStopSymbol(stopId: String): String { val cursor = db.rawQuery("select symbol||number from stops where id = ?", listOf(stopId).toTypedArray()) val symbol: String cursor.moveToNext() symbol = cursor.getString(0) cursor.close() return symbol } fun getLineNumber(lineId: String): String { val cursor = db.rawQuery("select number from lines where id = ?", listOf(lineId).toTypedArray()) val number: String cursor.moveToNext() number = cursor.getString(0) cursor.close() return number } fun getStopDepartures(stopId: String, lineId: String? = null): HashMap<String, ArrayList<Departure>> { val plates = HashSet<Plate>() val toGet = HashSet<Plate>() if (lineId == null) { getLinesForStop(stopId) .map { Plate(it, stopId, null) } .forEach { if (cacheManager.has(it)) plates.add(cacheManager.get(it)!!) else { toGet.add(it) } } } else { val plate = Plate(lineId, stopId, null) if (cacheManager.has(plate)) plates.add(cacheManager.get(plate)!!) else { toGet.add(plate) } } getStopDeparturesByPlates(toGet).forEach {cacheManager.push(it); plates.add(it)} return Plate.join(plates) } fun getStopDepartures(plates: HashSet<Plate>): HashMap<String, ArrayList<Departure>> { val result = HashSet<Plate>() val toGet = HashSet<Plate>() for (plate in plates) { if (cacheManager.has(plate)) result.add(cacheManager.get(plate)!!) else toGet.add(plate) } getStopDeparturesByPlates(toGet).forEach {cacheManager.push(it); result.add(it)} return Plate.join(result) } private fun getStopDeparturesByPlates(plates: HashSet<Plate>): HashSet<Plate> { val result = HashSet<Plate>() plates.mapTo(result) { Plate(it.line, it.stop, getStopDeparturesByLine(it.line, it.stop)) } //fixme to one query return result } private fun getLinesForStop(stopId: String): HashSet<String> { val cursor = db.rawQuery("select line_id from timetables where stop_id=?;", listOf(stopId).toTypedArray()) val lines = HashSet<String>() while (cursor.moveToNext()) lines.add(cursor.getString(0)) cursor.close() return lines } private fun getStopDeparturesByLine(lineId: String, stopId: String): HashMap<String, HashSet<Departure>>? { val cursor = db.rawQuery("select lines.number, mode, substr('0'||hour, -2) || ':' || " + "substr('0'||minute, -2) as time, lowFloor, modification, headsign from departures join " + "timetables on(timetable_id = timetables.id) join lines on(line_id = lines.id) where " + "stop_id = ? and line_id = ? order by mode, time;", listOf(stopId, lineId).toTypedArray()) val departures = HashMap<String, HashSet<Departure>>() departures.put(MODE_WORKDAYS, HashSet()) departures.put(MODE_SATURDAYS, HashSet()) departures.put(MODE_SUNDAYS, HashSet()) while (cursor.moveToNext()) { //fixme first moveToNext takes 2s, subsequent ones are instant departures[cursor.getString(1)]?.add(Departure(cursor.getString(0), cursor.getString(1), cursor.getString(2), cursor.getInt(3) == 1, cursor.getString(4), cursor.getString(5))) } cursor.close() return departures } fun getLines(stopId: String): ArrayList<String> { val cursor = db.rawQuery(" select distinct line_id from timetables join " + "stops on(stop_id = stops.id) where stops.id = ?;", listOf(stopId).toTypedArray()) val lines = ArrayList<String>() while (cursor.moveToNext()) { lines.add(cursor.getString(0)) } cursor.close() return lines } fun getFavouriteElement(plate: Plate): String { val cursor = db.rawQuery("select name || ' (' || stops.symbol || stops.number || '): \n' " + "|| lines.number || ' → ' || headsign from timetables join stops on (stops.id = stop_id) " + "join lines on(lines.id = line_id) join nodes on(nodes.symbol = stops.symbol) where " + "stop_id = ? and line_id = ?", listOf(plate.stop, plate.line).toTypedArray()) val element: String cursor.moveToNext() element = cursor.getString(0) cursor.close() return element } fun isEmpty(): Boolean { val cursor = db.rawQuery("select * from metadata;", null) try { cursor.moveToNext() cursor.getString(0) cursor.close() } catch (e: CursorIndexOutOfBoundsException) { return true } return false } fun getValidity(): String { val cursor = db.rawQuery("select value from metadata where key = 'validFrom'", null) cursor.moveToNext() val validity = cursor.getString(0) cursor.close() return "%s-%s-%s".format(validity.substring(0..3), validity.substring(4..5), validity.substring(6..7)) } } |