Add route forecast support for OpenWeatherMap (#145)
* 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>
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@ -6,7 +6,6 @@ import de.timklge.karooheadwind.KarooHeadwindExtension
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import de.timklge.karooheadwind.WeatherDataProvider
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import de.timklge.karooheadwind.datatypes.GpsCoordinates
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import de.timklge.karooheadwind.jsonWithUnknownKeys
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import de.timklge.karooheadwind.weatherprovider.WeatherDataForLocation
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import de.timklge.karooheadwind.weatherprovider.WeatherDataResponse
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import de.timklge.karooheadwind.weatherprovider.WeatherProvider
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import de.timklge.karooheadwind.weatherprovider.WeatherProviderException
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@ -16,13 +15,17 @@ import io.hammerhead.karooext.models.OnHttpResponse
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import io.hammerhead.karooext.models.UserProfile
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import kotlinx.coroutines.FlowPreview
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import kotlinx.coroutines.TimeoutCancellationException
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import kotlinx.coroutines.async
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import kotlinx.coroutines.awaitAll
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import kotlinx.coroutines.channels.awaitClose
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import kotlinx.coroutines.coroutineScope
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import kotlinx.coroutines.flow.callbackFlow
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import kotlinx.coroutines.flow.catch
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import kotlinx.coroutines.flow.single
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import kotlinx.coroutines.flow.timeout
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import kotlinx.serialization.SerialName
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import kotlinx.serialization.Serializable
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import kotlin.math.absoluteValue
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import kotlin.time.Duration.Companion.seconds
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@ -48,6 +51,8 @@ data class Snow(
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class OpenWeatherMapWeatherProvider(private val apiKey: String) : WeatherProvider {
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companion object {
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private const val MAX_API_CALLS = 4
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fun convertWeatherCodeToOpenMeteo(owmCode: Int): Int {
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// Mapping OpenWeatherMap to WMO OpenMeteo
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return when (owmCode) {
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@ -67,37 +72,84 @@ class OpenWeatherMapWeatherProvider(private val apiKey: String) : WeatherProvide
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coordinates: List<GpsCoordinates>,
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settings: HeadwindSettings,
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profile: UserProfile?
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): WeatherDataResponse {
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): WeatherDataResponse = coroutineScope {
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val response = makeOpenWeatherMapRequest(karooSystem, coordinates, apiKey)
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val responseBody = response.body?.let { String(it) } ?: throw Exception("Null response from OpenWeatherMap")
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val responses = mutableListOf<WeatherDataForLocation>()
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val selectedCoordinates = when {
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coordinates.size <= MAX_API_CALLS -> coordinates
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else -> {
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val openWeatherMapWeatherDataForLocation = jsonWithUnknownKeys.decodeFromString<OpenWeatherMapWeatherDataForLocation>(responseBody)
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responses.add(openWeatherMapWeatherDataForLocation.toWeatherDataForLocation(null))
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val mandatoryCoordinates = coordinates.take(3).toMutableList()
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// FIXME Route forecast
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return WeatherDataResponse(
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val fourthIndex = if (coordinates.size > 6) {
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coordinates.size - 3
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} else {
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(coordinates.size / 2) + 1
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}
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mandatoryCoordinates.add(coordinates[fourthIndex.coerceIn(3, coordinates.lastIndex)])
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mandatoryCoordinates
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}
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}
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Log.d(KarooHeadwindExtension.TAG, "OpenWeatherMap: searching for ${selectedCoordinates.size} locations from ${coordinates.size} total")
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selectedCoordinates.forEachIndexed { index, coord ->
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Log.d(KarooHeadwindExtension.TAG, "Point #$index: ${coord.lat}, ${coord.lon}, distance: ${coord.distanceAlongRoute}")
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}
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val weatherDataForSelectedLocations = selectedCoordinates.map { coordinate ->
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async {
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val response = makeOpenWeatherMapRequest(karooSystem, coordinate, apiKey)
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val responseBody = response.body?.let { String(it) }
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?: throw WeatherProviderException(response.statusCode, "Null Response from OpenWeatherMap")
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val weatherData = jsonWithUnknownKeys.decodeFromString<OpenWeatherMapWeatherDataForLocation>(responseBody)
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coordinate to weatherData
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}
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}.awaitAll()
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val allLocationData = coordinates.map { originalCoord ->
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val directMatch = weatherDataForSelectedLocations.find { it.first == originalCoord }
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if (directMatch != null) {
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directMatch.second.toWeatherDataForLocation(originalCoord.distanceAlongRoute)
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} else {
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val closestCoord = weatherDataForSelectedLocations.minByOrNull { (coord, _) ->
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if (originalCoord.distanceAlongRoute != null && coord.distanceAlongRoute != null) {
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(originalCoord.distanceAlongRoute - coord.distanceAlongRoute).absoluteValue
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} else {
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originalCoord.distanceTo(coord)
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}
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} ?: throw WeatherProviderException(500, "Error finding nearest coordinate")
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closestCoord.second.toWeatherDataForLocation(originalCoord.distanceAlongRoute)
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}
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}
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WeatherDataResponse(
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provider = WeatherDataProvider.OPEN_WEATHER_MAP,
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data = responses
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data = allLocationData
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)
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}
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@OptIn(FlowPreview::class)
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private suspend fun makeOpenWeatherMapRequest(
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service: KarooSystemService,
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coordinates: List<GpsCoordinates>,
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coordinate: GpsCoordinates,
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apiKey: String
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): HttpResponseState.Complete {
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val response = callbackFlow {
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// OpenWeatherMap only supports setting imperial or metric units for all measurements, not individually for distance / temperature
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val coordinate = coordinates.first()
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// URL API 3.0 with onecall endpoint
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val url = "https://api.openweathermap.org/data/3.0/onecall?lat=${coordinate.lat}&lon=${coordinate.lon}" +
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"&appid=$apiKey&exclude=minutely,daily,alerts&units=metric"
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"&appid=$apiKey&exclude=minutely,daily,alerts&units=metric"
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Log.d(KarooHeadwindExtension.TAG, "Http request to OpenWeatherMap API 3.0: $url")
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