ref: e056a460a0adc2459802f0856a6c27be85a5852c
app/src/main/java/xyz/apiote/bimba/czwek/api/Structs.kt
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package xyz.apiote.bimba.czwek.api import android.content.Context import android.graphics.* import android.graphics.drawable.BitmapDrawable import android.graphics.drawable.Drawable import android.graphics.drawable.LayerDrawable import android.os.Parcelable import android.text.format.DateUtils import android.util.Log import androidx.appcompat.content.res.AppCompatResources import androidx.core.graphics.ColorUtils.HSLToColor import androidx.core.graphics.drawable.toBitmap import kotlinx.parcelize.Parcelize import org.yaml.snakeyaml.Yaml import xyz.apiote.bimba.czwek.R import xyz.apiote.bimba.czwek.dpToPixel import xyz.apiote.bimba.czwek.dpToPixelI import xyz.apiote.fruchtfleisch.Reader import java.io.InputStream import java.time.Instant import java.time.ZoneId import java.time.ZonedDateTime import java.time.format.DateTimeFormatter import java.time.format.FormatStyle import java.time.temporal.ChronoUnit import java.util.* import java.util.zip.Adler32 import kotlin.math.abs import kotlin.math.pow class TrafficFormatException(override val message: String) : IllegalArgumentException() class UnknownResourceVersion(val resource: String, val version: ULong) : Exception() data class BimbaInfo( val contact: Map<String, String>, ) data class Bimba( val info: BimbaInfo, val servers: List<Map<String, String>>, val security: List<Map<String, List<*>>> ) { companion object { @Suppress("UNCHECKED_CAST") fun unmarshal(stream: InputStream): Bimba { val map = Yaml().load(stream) as HashMap<String, *> val contact = if (map["info"] is Map<*, *> && (map["info"] as Map<*, *>).keys.all { it is String }) { (map["info"] as Map<String, *>)["contact"] } else { throw TrafficFormatException("invalid info format") } val contactMap = if (contact is Map<*, *> && contact.all { it.key is String && it.value is String }) { contact as Map<String, String> } else { throw TrafficFormatException("invalid contact format") } val servers = if (map["servers"] is List<*> && (map["servers"] as List<*>).all { server -> server is Map<*, *> && server.all { it.key is String && it.value is String } }) { map["servers"] as List<Map<String, String>> } else { throw TrafficFormatException("invalid servers format") } val security = if (map["security"] is List<*> && (map["security"] as List<*>).all { security -> security is Map<*, *> && security.all { it.key is String && it.value is List<*> } }) { map["security"] as List<Map<String, List<*>>> } else { throw TrafficFormatException("invalid security format") } val bimba = Bimba(BimbaInfo(contactMap), servers, security) bimba.validate() return bimba } } fun isPrivate(): Boolean { return security.size == 1 && security[0]["api_key"] != null } fun isRateLimited(): Boolean { val items = security.foldRight(0b00) { map, acc -> acc or when { map.containsKey("api_key") -> 0b10 map.isEmpty() -> 0b01 else -> 0b00 } } Log.i("Rate limited", "${this}, $items") return security.size == 2 && items == 0b11 } private fun validate() { if (servers.isEmpty() || servers[0]["url"] == null) { throw TrafficFormatException("no server in info") } if (security.isEmpty()) { throw TrafficFormatException("no security") } } } @Parcelize data class PositionV1( val latitude: Double, val longitude: Double ) : Parcelable { fun isZero(): Boolean { return latitude == 0.0 && longitude == 0.0 } override fun toString(): String = "$latitude,$longitude" companion object { fun unmarshal(stream: InputStream): PositionV1 { val reader = Reader(stream) return PositionV1( reader.readFloat64(), reader.readFloat64() ) } } } data class FeedInfoV1( val name: String, val id: String, val attribution: String, val description: String, val lastUpdate: ZonedDateTime ) { companion object { fun unmarshal(stream: InputStream): FeedInfoV1 { val reader = Reader(stream) return FeedInfoV1( reader.readString(), reader.readString(), reader.readString(), reader.readString(), ZonedDateTime.parse(reader.readString(), DateTimeFormatter.ISO_DATE_TIME) ) } } fun formatDate(): String { return lastUpdate.format( DateTimeFormatter.ofLocalizedDate(FormatStyle.FULL).withLocale(Locale.getDefault()) ) } } data class AlertV1( val header: String, val Description: String, val Url: String, val Cause: ULong, // todo [3.1] enum val Effect: ULong // todo [3.1] enum ) { companion object { fun unmarshal(stream: InputStream): AlertV1 { val reader = Reader(stream) val header = reader.readString() val description = reader.readString() val url = reader.readString() val cause = reader.readUInt().toULong() val effect = reader.readUInt().toULong() return AlertV1(header, description, url, cause, effect) } } } data class Time( val Hour: UInt, val Minute: UInt, val Second: UInt, val DayOffset: Byte, val Zone: String ) { companion object { fun unmarshal(stream: InputStream): Time { val reader = Reader(stream) return Time( reader.readUInt().toULong().toUInt(), reader.readUInt().toULong().toUInt(), reader.readUInt().toULong().toUInt(), reader.readI8(), reader.readString() ) } } } data class ColourV1(val R: UByte, val G: UByte, val B: UByte) { companion object { fun unmarshal(stream: InputStream): ColourV1 { val reader = Reader(stream) return ColourV1( reader.readU8(), reader.readU8(), reader.readU8() ) } } fun toInt(): Int { var rgb = 0xff rgb = (rgb shl 8) + R.toInt() rgb = (rgb shl 8) + G.toInt() rgb = (rgb shl 8) + B.toInt() return rgb } } data class VehicleV1( val ID: String, val Position: PositionV1, val Capabilities: UShort, val Speed: Float, val Line: LineStubV1, val Headsign: String, val CongestionLevel: ULong, val OccupancyStatus: ULong ) : Locatable { enum class Capability(val bit: UShort) { RAMP(0b0001u), LOW_FLOOR(0b0010u), LOW_ENTRY(0b0001_0000_0000u), AC(0b0100u), BIKE(0b1000u), VOICE( 0b0001_0000u ), TICKET_MACHINE(0b0010_0000u), TICKET_DRIVER(0b0100_0000u), USB_CHARGING(0b1000_0000u) } override fun id(): String = ID override fun icon(context: Context, scale: Float): Drawable { return BitmapDrawable(context.resources, Line.icon(context, scale)) } override fun location(): PositionV1 = Position fun congestion(context: Context): String { return when (val r = CongestionLevel.toUInt()) { // todo [3.1] enum 0u -> context.getString(R.string.congestion_unknown) 1u -> context.getString(R.string.congestion_smooth) 2u -> context.getString(R.string.congestion_stop_and_go) 3u -> context.getString(R.string.congestion_congestion) 4u -> context.getString(R.string.congestion_jams) else -> throw UnknownResourceVersion("Congestion/$r", 1u) } } fun occupancy(context: Context): String { return when (val r = OccupancyStatus.toUInt()) { // todo [3.1] enum 0u -> context.getString(R.string.occupancy_unknown) 1u -> context.getString(R.string.occupancy_empty) 2u -> context.getString(R.string.occupancy_many_seats) 3u -> context.getString(R.string.occupancy_few_seats) 4u -> context.getString(R.string.occupancy_standing_only) 5u -> context.getString(R.string.occupancy_crowded) 6u -> context.getString(R.string.occupancy_full) 7u -> context.getString(R.string.occupancy_wont_let) else -> throw UnknownResourceVersion("Occupancy/$r", 1u) } } companion object { fun unmarshal(stream: InputStream): VehicleV1 { val reader = Reader(stream) return VehicleV1( reader.readString(), PositionV1.unmarshal(stream), reader.readU16(), reader.readFloat32(), LineStubV1.unmarshal(stream), reader.readString(), reader.readUInt().toULong(), reader.readUInt().toULong() ) } } fun getCapability(field: Capability): Boolean { return Capabilities.and(field.bit) != (0).toUShort() } } data class LineStubV1( val name: String, val kind: LineTypeV1, val colour: ColourV1 ) : LineAbstract { companion object { fun unmarshal(stream: InputStream): LineStubV1 { val reader = Reader(stream) return LineStubV1( reader.readString(), LineTypeV1.of(reader.readUInt().toULong().toUInt()), ColourV1.unmarshal(stream) ) } } fun icon(context: Context, scale: Float = 1f): Bitmap { return super.icon(context, kind, colour, scale) } } data class DepartureV1( val ID: String, val time: Time, val status: ULong, val isRealtime: Boolean, val vehicle: VehicleV1, val boarding: UByte ) { fun statusText(context: Context?): String { val now = Instant.now().atZone(ZoneId.systemDefault()) val departureTime = ZonedDateTime.of( now.year, now.monthValue, now.dayOfMonth, time.Hour.toInt(), time.Minute.toInt(), time.Second.toInt(), 0, ZoneId.of(time.Zone) ).plus(time.DayOffset.toLong(), ChronoUnit.DAYS) return when (val r = status.toUInt()) { 0u -> DateUtils.getRelativeTimeSpanString( departureTime.toEpochSecond() * 1000, now.toEpochSecond() * 1000, DateUtils.MINUTE_IN_MILLIS, DateUtils.FORMAT_ABBREV_RELATIVE ).toString() 1u -> context?.getString(R.string.departure_momentarily) ?: "momentarily" 2u -> context?.getString(R.string.departure_now) ?: "now" 3u -> context?.getString(R.string.departure_departed) ?: "departed" else -> throw UnknownResourceVersion("VehicleStatus/$r", 1u) } } fun timeString(context: Context): String { return if (isRealtime) { context.getString( R.string.at_time_realtime, time.Hour.toInt(), time.Minute.toInt(), time.Second.toInt() ) } else { context.getString(R.string.at_time, time.Hour.toInt(), time.Minute.toInt()) } } fun boardingText(context: Context): String { // todo [3.x] probably should take into account (on|off)-boarding only, on demand return when { boarding == (0b0000_0000).toUByte() -> context.getString(R.string.no_boarding) boarding.and(0b0011_0011u) == (0b0000_0001).toUByte() -> context.getString(R.string.on_boarding) boarding.and(0b0011_0011u) == (0b0001_0000).toUByte() -> context.getString(R.string.off_boarding) boarding.and(0b0011_0011u) == (0b0001_0001).toUByte() -> context.getString(R.string.boarding) else -> context.getString(R.string.on_demand) } } companion object { fun unmarshal(stream: InputStream): DepartureV1 { val reader = Reader(stream) val id = reader.readString() val time = Time.unmarshal(stream) val status = reader.readUInt().toULong() val isRealtime = reader.readBoolean() val vehicle = VehicleV1.unmarshal(stream) val boarding = reader.readU8() return DepartureV1(id, time, status, isRealtime, vehicle, boarding) } } } interface QueryableV1 interface Locatable { fun icon(context: Context, scale: Float = 1f): Drawable fun location(): PositionV1 fun id(): String } class ErrorLocatable(val stringResource: Int) : Locatable { override fun icon(context: Context, scale: Float): Drawable { return AppCompatResources.getDrawable(context, R.drawable.error_other)!! } override fun location(): PositionV1 { return PositionV1(0.0, 0.0) } override fun id(): String { return "ERROR" } } @Parcelize data class StopV1( val code: String, val name: String, val zone: String, val position: PositionV1, val changeOptions: List<ChangeOptionV1> ) : QueryableV1, Locatable, Parcelable { override fun icon(context: Context, scale: Float): Drawable { val saturationArray = arrayOf(0.5f, 0.65f, 0.8f) val sal = saturationArray.size val lightnessArray = arrayOf(.5f) val lal = lightnessArray.size val md = Adler32().let { it.update(name.toByteArray()) it.value } val h = md % 359f val s = saturationArray[(md / 360 % sal).toInt()] val l = lightnessArray[(md / 360 / sal % lal).toInt()] val fg = AppCompatResources.getDrawable(context, R.drawable.stop) val bg = AppCompatResources.getDrawable(context, R.drawable.stop_bg)!!.mutate().apply { setTint(HSLToColor(arrayOf(h, s, l).toFloatArray())) } return BitmapDrawable( context.resources, LayerDrawable(arrayOf(bg, fg)).mutate() .toBitmap(dpToPixelI(24f / scale), dpToPixelI(24f / scale), Bitmap.Config.ARGB_8888) ) } override fun id(): String = code override fun location(): PositionV1 = position override fun toString(): String { var result = "$name ($code) [$zone] $position\n" for (chOpt in changeOptions) result += "${chOpt.line} → ${chOpt.headsign}\n" return result } fun changeOptions(context: Context): Pair<String, String> { return Pair(changeOptions.groupBy { it.line } .map { Pair(it.key, it.value.joinToString { co -> co.headsign }) }.joinToString { context.getString( R.string.vehicle_headsign, it.first, it.second ) }, changeOptions.groupBy { it.line } .map { Pair(it.key, it.value.joinToString { co -> co.headsign }) }.joinToString { context.getString( R.string.vehicle_headsign_content_description, it.first, it.second ) }) } companion object { fun unmarshal(stream: InputStream): StopV1 { val reader = Reader(stream) val code = reader.readString() val name = reader.readString() val zone = reader.readString() val position = PositionV1.unmarshal(stream) val chOptionsNum = reader.readUInt().toULong() val changeOptions = mutableListOf<ChangeOptionV1>() for (i in 0UL until chOptionsNum) { changeOptions.add(ChangeOptionV1.unmarshal(stream)) } return StopV1( name = name, code = code, zone = zone, position = position, changeOptions = changeOptions ) } } } interface LineAbstract { fun textColour(c: ColourV1): Int { val black = relativeLuminance(ColourV1(0u, 0u, 0u)) + .05 val white = relativeLuminance(ColourV1(255u, 255u, 255u)) + .05 val colour = relativeLuminance(c) + .05 return if ((white / colour) > (colour / black)) { Color.WHITE } else { Color.BLACK } } private fun relativeLuminance(colour: ColourV1): Double { val r = fromSRGB(colour.R.toDouble() / 0xff) val g = fromSRGB(colour.G.toDouble() / 0xff) val b = fromSRGB(colour.B.toDouble() / 0xff) return 0.2126 * r + 0.7152 * g + 0.0722 * b } private fun fromSRGB(part: Double): Double { return if (part <= 0.03928) { part / 12.92 } else { ((part + 0.055) / 1.055).pow(2.4) } } fun icon(context: Context, type: LineTypeV1, colour: ColourV1, scale: Float): Bitmap { val drawingBitmap = Bitmap.createBitmap( dpToPixelI(24f / scale), dpToPixelI(24f / scale), Bitmap.Config.ARGB_8888 ) val canvas = Canvas(drawingBitmap) canvas.drawPath(getSquirclePath( dpToPixel(.8f / scale), dpToPixel(.8f / scale), dpToPixelI(11.2f / scale) ), Paint().apply { color = textColour(colour) }) canvas.drawPath(getSquirclePath( dpToPixel(1.6f / scale), dpToPixel(1.6f / scale), dpToPixelI(10.4f / scale) ), Paint().apply { color = colour.toInt() }) val iconID = when (type) { LineTypeV1.BUS -> R.drawable.bus_black LineTypeV1.TRAM -> R.drawable.tram_black LineTypeV1.UNKNOWN -> R.drawable.vehicle_black } val icon = AppCompatResources.getDrawable(context, iconID)?.mutate()?.apply { setTint(textColour(colour)) }?.toBitmap(dpToPixelI(19.2f / scale), dpToPixelI(19.2f / scale), Bitmap.Config.ARGB_8888) canvas.drawBitmap( icon!!, dpToPixel(2.4f / scale), dpToPixel(2.4f / scale), Paint() ) return drawingBitmap } private fun getSquirclePath( left: Float, top: Float, radius: Int ): Path { val radiusToPow = (radius * radius * radius).toDouble() val path = Path() path.moveTo(-radius.toFloat(), 0f) for (x in -radius..radius) path.lineTo( x.toFloat(), Math.cbrt(radiusToPow - abs(x * x * x)).toFloat() ) for (x in radius downTo -radius) path.lineTo( x.toFloat(), -Math.cbrt(radiusToPow - abs(x * x * x)).toFloat() ) path.close() val matrix = Matrix() matrix.postTranslate((left + radius), (top + radius)) path.transform(matrix) return path } } data class Line( val colour: ColourV1, val type: LineTypeV1, val headsignsThere: List<String>, val headsignsBack: List<String>, val graphThere: LineGraph, val graphBack: LineGraph, val name: String ) : QueryableV1, LineAbstract { override fun toString(): String { return "$name ($type) [$colour]\n→ [${headsignsThere.joinToString()}]\n→ [${headsignsBack.joinToString()}]\n" } fun icon(context: Context, scale: Float = 1f): Bitmap { return super.icon(context, type, colour, scale) } companion object { fun unmarshal(stream: InputStream): Line { val reader = Reader(stream) val colour = ColourV1.unmarshal(stream) val type = reader.readUInt() val headsignsThereNum = reader.readUInt().toULong() val headsignsThere = mutableListOf<String>() for (i in 0UL until headsignsThereNum) { headsignsThere.add(reader.readString()) } val headsignsBackNum = reader.readUInt().toULong() val headsignsBack = mutableListOf<String>() for (i in 0UL until headsignsBackNum) { headsignsBack.add(reader.readString()) } val graphThere = LineGraph.unmarshal(stream) val graphBack = LineGraph.unmarshal(stream) val name = reader.readString() return Line( name = name, colour = colour, type = LineTypeV1.of(type.toULong().toUInt()), headsignsThere = headsignsThere, headsignsBack = headsignsBack, graphThere = graphThere, graphBack = graphBack ) } } } enum class LineTypeV1 { UNKNOWN, TRAM, BUS; companion object { fun of(type: UInt): LineTypeV1 { return when (type) { 0u -> valueOf("UNKNOWN") 1u -> valueOf("TRAM") 2u -> valueOf("BUS") else -> throw UnknownResourceVersion("LineType/$type", 1u) } } } } @Parcelize data class ChangeOptionV1(val line: String, val headsign: String):Parcelable { companion object { fun unmarshal(stream: InputStream): ChangeOptionV1 { val reader = Reader(stream) return ChangeOptionV1(line = reader.readString(), headsign = reader.readString()) } } } data class LineGraph( val stops: List<StopStub>, val nextNodes: Map<Long, List<Long>>, val prevNodes: Map<Long, List<Long>> ) { companion object { fun unmarshal(stream: InputStream): LineGraph { val reader = Reader(stream) val stopsNum = reader.readUInt().toULong() val stops = mutableListOf<StopStub>() for (i in 0UL until stopsNum) { stops.add(StopStub.unmarshal(stream)) } val nextNodesNum = reader.readUInt().toULong() val nextNodes = mutableMapOf<Long, List<Long>>() for (i in 0UL until nextNodesNum) { val from = reader.readInt().toLong() val toNum = reader.readUInt().toULong() val to = mutableListOf<Long>() for (j in 0UL until toNum) { to.add(reader.readInt().toLong()) } nextNodes[from] = to } val prevNodesNum = reader.readUInt().toULong() val prevNodes = mutableMapOf<Long, List<Long>>() for (i in 0UL until prevNodesNum) { val from = reader.readInt().toLong() val toNum = reader.readUInt().toULong() val to = mutableListOf<Long>() for (j in 0UL until toNum) { to.add(reader.readInt().toLong()) } prevNodes[from] = to } return LineGraph(stops = stops, nextNodes = nextNodes, prevNodes = prevNodes) } } } data class StopStub(val name: String, val code: String, val zone: String, val onDemand: Boolean) { companion object { fun unmarshal(stream: InputStream): StopStub { val reader = Reader(stream) return StopStub( code = reader.readString(), name = reader.readString(), zone = reader.readString(), onDemand = reader.readBoolean() ) } } } |