Bimba.git

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111

// SPDX-FileCopyrightText: Adam Evyčędo
//
// SPDX-License-Identifier: GPL-3.0-or-later

package xyz.apiote.bimba.czwek.repo

import android.content.Context
import androidx.core.content.edit
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import xyz.apiote.bimba.czwek.api.Server
import xyz.apiote.fruchtfleisch.Reader
import xyz.apiote.fruchtfleisch.Writer
import java.io.File
import java.net.URLEncoder
import java.time.LocalDate

class OfflineRepository : Repository {
	fun saveFeedCache(context: Context, feedInfos: Map<String, FeedInfo>) {
		val file = File(
			context.filesDir, URLEncoder.encode(Server.get(context).apiPath, "utf-8")
		)
		context.getSharedPreferences("offlineFeeds", Context.MODE_PRIVATE).edit {
			putInt("version", FeedInfo.VERSION.toInt())
		}
		val stream = file.outputStream()
		val writer = Writer(stream)
		writer.writeUInt(feedInfos.size.toULong())
		feedInfos.forEach {
			it.value.marshal(stream)
		}
		stream.flush()
		stream.close()
	}

	@Suppress("RedundantNullableReturnType")
	override suspend fun getFeeds(
		context: Context,
		server: Server
	): Map<String, FeedInfo>? {
		val file = File(
			context.filesDir, withContext(Dispatchers.IO) {
				URLEncoder.encode(server.apiPath, "utf-8")
			}
		)
		if (!file.exists()) {
			return emptyMap()
		}

		val version =
			context.getSharedPreferences("offlineFeeds", Context.MODE_PRIVATE).getInt("version", -1)
		if (version < 0) {
			return emptyMap()
		}
		val unmarshaller =
			if (version.toUInt() == FeedInfo.VERSION) FeedInfo::unmarshal else FeedInfoPrev::unmarshal
		val stream = file.inputStream()
		val feeds = mutableMapOf<String, FeedInfo>()
		val n = Reader(stream).readUInt().toULong().toInt()
		repeat(n) {
			val feed = unmarshaller(stream)
			feeds[feed.id] = feed
			if (version.toUInt() != FeedInfo.VERSION) {
				saveFeedCache(context, feeds)
			}
		}
		return feeds
	}

	override suspend fun getDepartures(
		feedID: String,
		stop: String,
		date: LocalDate?,
		context: Context,
		limit: Int?
	): StopDepartures? {
		TODO("Not yet implemented")
	}

	override suspend fun getLocatablesIn(
		context: Context,
		bl: Position,
		tr: Position,
	): List<Locatable>? {
		TODO("Not yet implemented")
	}

	override suspend fun getLine(
		context: Context,
		feedID: String,
		lineName: String,
		lineID: String,
	): Line? {
		TODO("Not yet implemented")
	}

	override suspend fun queryQueryables(
		query: String,
		context: Context
	): List<Queryable>? {
		TODO("Not yet implemented")
	}

	override suspend fun locateQueryables(
		position: Position,
		context: Context
	): List<Queryable>? {
		TODO("Not yet implemented")
	}

}