ref: 69bebacce47fa84ef323799f389df1d7ab04de5c
app/src/main/java/xyz/apiote/bimba/czwek/api/Api.kt
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// SPDX-FileCopyrightText: Adam Evyčędo // // SPDX-License-Identifier: GPL-3.0-or-later package xyz.apiote.bimba.czwek.api import android.content.Context import android.content.Context.MODE_PRIVATE import android.net.ConnectivityManager import android.net.NetworkCapabilities import android.os.Build import kotlinx.coroutines.Dispatchers import kotlinx.coroutines.withContext import xyz.apiote.bimba.czwek.R import xyz.apiote.bimba.czwek.settings.feeds.FeedsSettings import java.io.IOException import java.io.InputStream import java.net.HttpURLConnection import java.net.MalformedURLException import java.net.URL import java.net.URLEncoder import java.time.LocalDate import java.time.format.DateTimeFormatter // todo [3.2] constants // todo [3.2] split api files to classes files data class Server( val host: String, val token: String, val feeds: FeedsSettings, val apiPath: String ) { companion object { fun get(context: Context): Server { val preferences = context.getSharedPreferences("shp", MODE_PRIVATE) val apiPath = preferences.getString("apiPath", "")!! val feeds = FeedsSettings.load(context, apiPath) val host = preferences.getString("host", "bimba.apiote.xyz")!! return Server( host, preferences.getString("token", "")!!, feeds, apiPath ) } } } data class Result(val stream: InputStream?, val error: Error?) data class Error(val statusCode: Int, val stringResource: Int, val imageResource: Int) suspend fun getBimba(context: Context, server: Server): Result { return try { rawRequest( URL("${hostWithScheme(server.host)}/.well-known/traffic-api"), server, context, emptyArray() ) } catch (e: MalformedURLException) { Result(null, Error(0, R.string.error_url, R.drawable.error_url)) } } suspend fun getFeeds(context: Context, server: Server): Result { return try { rawRequest( URL("${server.apiPath}/"), server, context, arrayOf(1u, 2u) ) } catch (_: MalformedURLException) { Result(null, Error(0, R.string.error_url, R.drawable.error_url)) } } suspend fun queryQueryables( context: Context, server: Server, query: String, limit: Int? = null ): Result { val params = mutableMapOf("q" to query) if (limit != null) { params["limit"] = limit.toString() } return request( server, "queryables", null, params, context, arrayOf(1u, 2u, 3u, 4u), null ) } suspend fun locateQueryables(context: Context, server: Server, near: PositionV1): Result { return request( server, "queryables", null, mapOf("near" to near.toString()), context, arrayOf(1u, 2u, 3u, 4u), null ) } suspend fun getLocatablesIn( context: Context, server: Server, bl: PositionV1, tr: PositionV1 ): Result { return request( server, "locatables", null, mapOf("lb" to bl.toString(), "rt" to tr.toString()), context, arrayOf(1u, 2u, 3u), null ) } suspend fun getLine( context: Context, server: Server, feedID: String, lineName: String, lineID: String ): Result { return request( server, "lines", lineName, mapOf("line" to lineID), context, arrayOf(1u, 2u, 3u), feedID ) } suspend fun getDepartures( context: Context, server: Server, feedID: String, stop: String, date: LocalDate?, limit: Int? = null ): Result { val params = mutableMapOf("code" to stop) if (date != null) { params["date"] = date.format(DateTimeFormatter.ISO_LOCAL_DATE) } if (limit != null) { params["limit"] = limit.toString(10) } return request( server, "departures", null, params, context, arrayOf(1u, 2u, 3u, 4u), feedID ) } fun mapHttpError(code: Int): Pair<Int, Int> { return when (code) { 41 -> Pair(R.string.error_41, R.drawable.error_locality) 44 -> Pair(R.string.error_44, R.drawable.error_departures) 400 -> Pair(R.string.error_400, R.drawable.error_app) 401 -> Pair(R.string.error_401, R.drawable.error_sec) 403 -> Pair(R.string.error_403, R.drawable.error_sec) 404 -> Pair(R.string.error_404, R.drawable.error_search) 406 -> Pair(R.string.error_406, R.drawable.error_accept) 429 -> Pair(R.string.error_429, R.drawable.error_limit) 500 -> Pair(R.string.error_50x, R.drawable.error_server) 502 -> Pair(R.string.error_50x, R.drawable.error_server) 503 -> Pair(R.string.error_50x, R.drawable.error_server) 504 -> Pair(R.string.error_50x, R.drawable.error_server) else -> Pair(R.string.error_unknown, R.drawable.error_other) } } suspend fun rawRequest( url: URL, server: Server, context: Context, responseVersion: Array<UInt> ): Result { if (!isNetworkAvailable(context)) { return Result(null, Error(0, R.string.error_offline, R.drawable.error_net)) } return withContext(Dispatchers.IO) { val c = (url.openConnection() as HttpURLConnection).apply { setRequestProperty( "User-Agent", "${context.getString(R.string.applicationId)}/${context.getString(R.string.versionName)} (${Build.VERSION.SDK_INT})" ) setRequestProperty("X-Bimba-Token", server.token) responseVersion.forEach { addRequestProperty("Accept", "application/$it+bare") } } try { if (c.responseCode == 200) { Result(c.inputStream, null) } else { val (string, image) = mapHttpError(c.responseCode) Result(c.errorStream, Error(c.responseCode, string, image)) } } catch (e: IOException) { Result(null, Error(0, R.string.error_connecting, R.drawable.error_server)) } } } private fun isNetworkAvailable(context: Context): Boolean { val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { connectivityManager.activeNetwork?.let { network -> connectivityManager.getNetworkCapabilities(network)?.let { capabilities -> capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) || capabilities.hasTransport( NetworkCapabilities.TRANSPORT_CELLULAR ) || capabilities.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) } } ?: false } else { @Suppress("DEPRECATION") connectivityManager.activeNetworkInfo?.isConnected ?: false } } suspend fun request( server: Server, resource: String, item: String?, params: Map<String, String>, context: Context, responseVersion: Array<UInt>, feeds: String? ): Result { return withContext(Dispatchers.IO) { val url = URL( // todo [3.2] scheme, host, path, constructed query "${server.apiPath}/${feeds?.ifEmpty { server.feeds.getIDs() } ?: server.feeds.getIDs()}/$resource${ if (item == null) { "" } else { "/${URLEncoder.encode(item, "utf-8")}" } }${ params.map { "${it.key}=${ URLEncoder.encode( it.value, "utf-8" ) }" }.joinToString("&", "?") }" ) rawRequest(url, server, context, responseVersion) } } fun hostWithScheme(host: String): String = if (host.startsWith("http://") or host.startsWith("https://")) { host } else { "https://$host" } |