Merge remote-tracking branch 'timklge/master'

* Added openweathermap support

* Added openweathermap support

* Added openweathermap support

* Added openweathermap support

* Added openweathermap support

* Added openweathermap support

* timklge updates 20250308
Forecast in route (openweathermap)

* Forecast in route (openweathermap)

* Forecast in route (openweathermap)

* Update app/src/main/kotlin/de/timklge/karooheadwind/weatherprovider/openweathermap/OpenWeatherMapWeatherProvider.kt

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

app/build.gradle.kts

@@ -72,7 +72,7 @@ tasks.register("generateManifest") {
             "latestVersionCode" to android.defaultConfig.versionCode,
             "developer" to "github.com/timklge",
             "description" to "Open-source extension that provides headwind direction, wind speed, forecast and other weather data fields.",
-            "releaseNotes" to "* Crop timespan in forecast widgets to 6 hours, use am / pm time format, enlarge font\n* Remove tailwind, icon forecast, weather data fields",
+            "releaseNotes" to "* Add route forecast support for OpenWeatherMap (thx @lockevod!)\n* Crop timespan in forecast widgets to 6 hours, use am / pm time format, enlarge font\n* Remove tailwind, icon forecast, weather data fields",
             "screenshotUrls" to listOf(
                 "$baseUrl/preview1.png",
                 "$baseUrl/preview3.png",

app/src/main/kotlin/de/timklge/karooheadwind/HeadingFlow.kt

@@ -5,7 +5,8 @@ import android.util.Log
 import de.timklge.karooheadwind.datatypes.GpsCoordinates
 import de.timklge.karooheadwind.util.signedAngleDifference
 import io.hammerhead.karooext.KarooSystemService
-import kotlinx.coroutines.awaitCancellation
+import io.hammerhead.karooext.models.DataType
+import io.hammerhead.karooext.models.StreamState
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.combine
@@ -13,6 +14,7 @@ import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.emitAll
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.firstOrNull
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.map
 
@@ -99,7 +101,33 @@ fun KarooSystemService.getGpsCoordinateFlow(context: Context): Flow<GpsCoordinat
     val initialFlow = flow {
         val lastKnownPosition = context.getLastKnownPosition()
 
+        if (lastKnownPosition == null) {
+            val initialState = streamDataFlow(DataType.Type.LOCATION).firstOrNull()?.let { it as? StreamState.Streaming }
+
+            initialState?.dataPoint?.let { dataPoint ->
+                val lat = dataPoint.values[DataType.Field.LOC_LATITUDE]
+                val lng = dataPoint.values[DataType.Field.LOC_LONGITUDE]
+                val orientation = dataPoint.values[DataType.Field.LOC_BEARING]
+
+                if (lat != null && lng != null) {
+                    emit(GpsCoordinates(lat, lng, orientation))
+
+                    Log.i(KarooHeadwindExtension.TAG, "No last known position found, fetched initial GPS position")
+                } else {
+                    emit(null)
+
+                    Log.w(KarooHeadwindExtension.TAG, "No last known position found, initial GPS position is unavailable")
+                }
+            } ?: run {
+                emit(null)
+
+                Log.w(KarooHeadwindExtension.TAG, "No last known position found, initial GPS position is unavailable")
+            }
+        } else {
             emit(lastKnownPosition)
+
+            Log.i(KarooHeadwindExtension.TAG, "Using last known position: $lastKnownPosition")
+        }
     }
 
     val gpsFlow = streamLocation()

app/src/main/kotlin/de/timklge/karooheadwind/KarooHeadwindExtension.kt

@@ -115,7 +115,7 @@ class KarooHeadwindExtension : KarooExtension("karoo-headwind", BuildConfig.VERS
                         old == new
                     }
                 }
-                .debounce(Duration.ofSeconds(5))
+                .throttle(5_000L)
 
             var requestedGpsCoordinates: List<GpsCoordinates> = emptyList()
 
@@ -234,7 +234,7 @@ class KarooHeadwindExtension : KarooExtension("karoo-headwind", BuildConfig.VERS
                 response
             }.retry(Long.MAX_VALUE) { e ->
                 Log.w(TAG, "Failed to get weather data", e)
-                delay(1.minutes); true
+                delay(2.minutes); true
             }.collect { response ->
                 try {
                     saveCurrentData(applicationContext, response)

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/LineGraphForecastDataType.kt

@@ -70,7 +70,8 @@ abstract class LineGraphForecastDataType(private val karooSystem: KarooSystemSer
     abstract fun getLineData(
         lineData: List<LineData>,
         isImperial: Boolean,
-        upcomingRoute: UpcomingRoute?
+        upcomingRoute: UpcomingRoute?,
+        isPreview: Boolean
     ): Set<LineGraphBuilder.Line>
 
     private fun previewFlow(settingsAndProfileStream: Flow<SettingsAndProfile>): Flow<StreamData> =
@@ -205,8 +206,7 @@ abstract class LineGraphForecastDataType(private val karooSystem: KarooSystemSer
         val viewJob = CoroutineScope(Dispatchers.IO).launch {
             emitter.onNext(ShowCustomStreamState("", null))
 
-            dataFlow.filter { it.isVisible }.collect { (allData, settingsAndProfile, widgetSettings, headingResponse, actualUpcomingRoute) ->
-                val upcomingRoute = if (allData?.provider == WeatherDataProvider.OPEN_METEO) actualUpcomingRoute else null
+            dataFlow.filter { it.isVisible }.collect { (allData, settingsAndProfile, _, headingResponse, upcomingRoute) ->
                 Log.d(KarooHeadwindExtension.TAG, "Updating weather forecast view")
 
                 if (allData?.data.isNullOrEmpty()){
@@ -261,7 +261,12 @@ abstract class LineGraphForecastDataType(private val karooSystem: KarooSystemSer
                         }
                     }
 
-                    val pointData = getLineData(data, settingsAndProfile.isImperialTemperature, upcomingRoute)
+                    val pointData = getLineData(
+                        data,
+                        settingsAndProfile.isImperialTemperature,
+                        upcomingRoute,
+                        config.preview
+                    )
                     val bitmap = LineGraphBuilder(context).drawLineGraph(config.viewSize.first, config.viewSize.second, config.gridSize.first, config.gridSize.second, pointData) { x ->
                         val startTime = data.firstOrNull()?.time
                         val time = startTime?.plus(floor(x).toLong(), ChronoUnit.HOURS)

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/PrecipitationForecastDataType.kt

@@ -8,7 +8,8 @@ class PrecipitationForecastDataType(karooSystem: KarooSystemService) : LineGraph
     override fun getLineData(
         lineData: List<LineData>,
         isImperial: Boolean,
-        upcomingRoute: UpcomingRoute?
+        upcomingRoute: UpcomingRoute?,
+        isPreview: Boolean
     ): Set<LineGraphBuilder.Line> {
         val precipitationPoints = lineData.map { data ->
             if (isImperial) { // Convert mm to inches

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/TemperatureForecastDataType.kt

@@ -8,7 +8,8 @@ class TemperatureForecastDataType(karooSystem: KarooSystemService) : LineGraphFo
     override fun getLineData(
         lineData: List<LineData>,
         isImperial: Boolean,
-        upcomingRoute: UpcomingRoute?
+        upcomingRoute: UpcomingRoute?,
+        isPreview: Boolean
     ): Set<LineGraphBuilder.Line> {
         val linePoints = lineData.map { data ->
             if (isImperial) {

app/src/main/kotlin/de/timklge/karooheadwind/datatypes/WindForecastDataType.kt

@@ -22,7 +22,8 @@ class WindForecastDataType(karooSystem: KarooSystemService) : LineGraphForecastD
     override fun getLineData(
         lineData: List<LineData>,
         isImperial: Boolean,
-        upcomingRoute: UpcomingRoute?
+        upcomingRoute: UpcomingRoute?,
+        isPreview: Boolean
     ): Set<LineGraphBuilder.Line> {
         val windPoints = lineData.map { data ->
             if (isImperial) { // Convert m/s to mph
@@ -41,9 +42,16 @@ class WindForecastDataType(karooSystem: KarooSystemService) : LineGraphForecastD
         }
 
         val headwindPoints = try {
-            if (upcomingRoute != null){
+            if (upcomingRoute != null || isPreview){
                 (0..<HEADWIND_SAMPLE_COUNT).mapNotNull { i ->
                     val t = i / HEADWIND_SAMPLE_COUNT.toDouble()
+
+                    if (isPreview) {
+                        return@mapNotNull LineGraphBuilder.DataPoint(i.toFloat() * (windPoints.size / HEADWIND_SAMPLE_COUNT.toFloat()), (-10f) + (20f * kotlin.random.Random.nextFloat()))
+                    }
+
+                    if (upcomingRoute == null) return@mapNotNull null
+
                     val beforeLineData = lineData.getOrNull(floor(lineData.size * t).toInt()) ?: lineData.firstOrNull()
                     val afterLineData = lineData.getOrNull(ceil(lineData.size * t).toInt()) ?: lineData.lastOrNull()
 
@@ -59,9 +67,24 @@ class WindForecastDataType(karooSystem: KarooSystemService) : LineGraphForecastD
                     val beforeDistanceAlongRoute = beforeLineData.distance
                     val afterDistanceAlongRoute = afterLineData.distance
                     val distanceAlongRoute = (beforeDistanceAlongRoute + (afterDistanceAlongRoute - beforeDistanceAlongRoute) * dt).coerceIn(0.0, upcomingRoute.routeLength)
-                    val coordsAlongRoute = TurfMeasurement.along(upcomingRoute.routePolyline, distanceAlongRoute, TurfConstants.UNIT_METERS)
-                    val nextCoordsAlongRoute = TurfMeasurement.along(upcomingRoute.routePolyline, distanceAlongRoute + 5, TurfConstants.UNIT_METERS)
-                    val bearingAlongRoute = TurfMeasurement.bearing(coordsAlongRoute, nextCoordsAlongRoute)
+                    val coordsAlongRoute = try {
+                        TurfMeasurement.along(upcomingRoute.routePolyline, distanceAlongRoute, TurfConstants.UNIT_METERS)
+                    } catch(e: Exception) {
+                        Log.e(KarooHeadwindExtension.TAG, "Error getting coordinates along route", e)
+                        return@mapNotNull null
+                    }
+                    val nextCoordsAlongRoute = try {
+                        TurfMeasurement.along(upcomingRoute.routePolyline, distanceAlongRoute + 5, TurfConstants.UNIT_METERS)
+                    } catch(e: Exception) {
+                        Log.e(KarooHeadwindExtension.TAG, "Error getting next coordinates along route", e)
+                        return@mapNotNull null
+                    }
+                    val bearingAlongRoute = try {
+                        TurfMeasurement.bearing(coordsAlongRoute, nextCoordsAlongRoute)
+                    } catch(e: Exception) {
+                        Log.e(KarooHeadwindExtension.TAG, "Error calculating bearing along route", e)
+                        return@mapNotNull null
+                    }
                     val windBearing = interpolatedWeather.windDirection + 180
                     val diff = signedAngleDifference(bearingAlongRoute, windBearing)
                     val headwindSpeed = cos( (diff + 180) * Math.PI / 180.0) * interpolatedWeather.windSpeed

app/src/main/kotlin/de/timklge/karooheadwind/screens/LineGraph.kt

@@ -381,7 +381,7 @@ class LineGraphBuilder(val context: Context) {
         // Draw Left Y-axis ticks and labels
         if (hasLeftYAxisData) {
             textPaint.textAlign = Align.RIGHT
-            val numYTicks = if (gridWidth > 15) 2 else 1
+            val numYTicks = if (gridHeight > 15) (gridHeight / 10) else 1
             if (abs(dataMaxYLeft - dataMinYLeft) > 0.0001f) {
                 for (i in 0..numYTicks) {
                     val value = dataMinYLeft + ((dataMaxYLeft - dataMinYLeft) / numYTicks) * i

app/src/main/kotlin/de/timklge/karooheadwind/weatherprovider/openweathermap/OpenWeatherMapWeatherProvider.kt

@@ -6,7 +6,6 @@ import de.timklge.karooheadwind.KarooHeadwindExtension
 import de.timklge.karooheadwind.WeatherDataProvider
 import de.timklge.karooheadwind.datatypes.GpsCoordinates
 import de.timklge.karooheadwind.jsonWithUnknownKeys
-import de.timklge.karooheadwind.weatherprovider.WeatherDataForLocation
 import de.timklge.karooheadwind.weatherprovider.WeatherDataResponse
 import de.timklge.karooheadwind.weatherprovider.WeatherProvider
 import de.timklge.karooheadwind.weatherprovider.WeatherProviderException
@@ -17,12 +16,14 @@ import io.hammerhead.karooext.models.UserProfile
 import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.TimeoutCancellationException
 import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.single
 import kotlinx.coroutines.flow.timeout
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
+import kotlin.math.absoluteValue
 import kotlin.time.Duration.Companion.seconds
 
 
@@ -48,6 +49,8 @@ data class Snow(
 
 class OpenWeatherMapWeatherProvider(private val apiKey: String) : WeatherProvider {
     companion object {
+        private const val MAX_API_CALLS = 3
+
         fun convertWeatherCodeToOpenMeteo(owmCode: Int): Int {
             // Mapping OpenWeatherMap to WMO OpenMeteo
             return when (owmCode) {
@@ -67,33 +70,64 @@ class OpenWeatherMapWeatherProvider(private val apiKey: String) : WeatherProvide
         coordinates: List<GpsCoordinates>,
         settings: HeadwindSettings,
         profile: UserProfile?
-    ): WeatherDataResponse {
+    ): WeatherDataResponse = coroutineScope {
+        val selectedCoordinates = coordinates.take((MAX_API_CALLS - 1).coerceAtLeast(1)).toMutableList()
 
-        val response = makeOpenWeatherMapRequest(karooSystem, coordinates, apiKey)
-        val responseBody = response.body?.let { String(it) } ?: throw Exception("Null response from OpenWeatherMap")
+        if (coordinates.isNotEmpty() && !selectedCoordinates.contains(coordinates.last())){
+            selectedCoordinates.add(coordinates.last())
+        }
 
-        val responses = mutableListOf<WeatherDataForLocation>()
+        Log.d(KarooHeadwindExtension.TAG, "OpenWeatherMap: searching for ${selectedCoordinates.size} locations from ${coordinates.size} total")
+        selectedCoordinates.forEachIndexed { index, coord ->
+            Log.d(KarooHeadwindExtension.TAG, "Point #$index: ${coord.lat}, ${coord.lon}, distance: ${coord.distanceAlongRoute}")
+        }
 
-        val openWeatherMapWeatherDataForLocation = jsonWithUnknownKeys.decodeFromString<OpenWeatherMapWeatherDataForLocation>(responseBody)
-        responses.add(openWeatherMapWeatherDataForLocation.toWeatherDataForLocation(null))
+        val weatherDataForSelectedLocations = buildList {
+            for (coordinate in selectedCoordinates){
+                val response = makeOpenWeatherMapRequest(karooSystem, coordinate, apiKey)
+                val responseBody = response.body?.let { String(it) }
+                    ?: throw WeatherProviderException(response.statusCode, "Null Response from OpenWeatherMap")
 
-        // FIXME Route forecast
+                val weatherData = jsonWithUnknownKeys.decodeFromString<OpenWeatherMapWeatherDataForLocation>(responseBody)
 
-        return WeatherDataResponse(
+                add(coordinate to weatherData)
+            }
+        }
+
+        val allLocationData = coordinates.map { originalCoord ->
+            val directMatch = weatherDataForSelectedLocations.find { it.first == originalCoord }
+
+            if (directMatch != null) {
+                directMatch.second.toWeatherDataForLocation(originalCoord.distanceAlongRoute)
+            } else {
+
+                val closestCoord = weatherDataForSelectedLocations.minByOrNull { (coord, _) ->
+                    if (originalCoord.distanceAlongRoute != null && coord.distanceAlongRoute != null) {
+                        (originalCoord.distanceAlongRoute - coord.distanceAlongRoute).absoluteValue
+                    } else {
+                        originalCoord.distanceTo(coord)
+                    }
+                } ?: throw WeatherProviderException(500, "Error finding nearest coordinate")
+
+
+                closestCoord.second.toWeatherDataForLocation(originalCoord.distanceAlongRoute)
+            }
+        }
+
+        WeatherDataResponse(
             provider = WeatherDataProvider.OPEN_WEATHER_MAP,
-            data = responses
+            data = allLocationData
         )
     }
 
+
     @OptIn(FlowPreview::class)
     private suspend fun makeOpenWeatherMapRequest(
         service: KarooSystemService,
-        coordinates: List<GpsCoordinates>,
+        coordinate: GpsCoordinates,
         apiKey: String
     ): HttpResponseState.Complete {
         val response = callbackFlow {
-            // OpenWeatherMap only supports setting imperial or metric units for all measurements, not individually for distance / temperature
-            val coordinate = coordinates.first()
 
             // URL API 3.0 with onecall endpoint
             val url = "https://api.openweathermap.org/data/3.0/onecall?lat=${coordinate.lat}&lon=${coordinate.lon}" +