Wire "Route Start Play" up to RoutePlayer

RoutePlayer is the initial code to playback routes, this change means
that clicking "Start Play" from within the RouteDetailsScreen will now
trigger starting playback.

app/src/main/java/org/scottishtecharmy/soundscape/MainActivity.kt

@@ -150,9 +150,6 @@ class MainActivity : AppCompatActivity() {
                             intent.action = ""
                         }
                     }
-
-                    // Pick the current route
-                    setupCurrentRoute()
                 }
             }
         }
@@ -265,10 +262,6 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    fun setupCurrentRoute() {
-        soundscapeServiceConnection.soundscapeService?.setupCurrentRoute()
-    }
-
     /**
      * Creates and starts the Soundscape foreground service.
      *

app/src/main/java/org/scottishtecharmy/soundscape/SoundscapeServiceConnection.kt

@@ -14,7 +14,6 @@ import kotlinx.coroutines.flow.asStateFlow
 import org.scottishtecharmy.soundscape.geojsonparser.geojson.LngLatAlt
 import org.scottishtecharmy.soundscape.services.SoundscapeBinder
 import org.scottishtecharmy.soundscape.services.SoundscapeService
-import org.scottishtecharmy.soundscape.geoengine.utils.TileGrid
 import javax.inject.Inject
 
 @ActivityRetainedScoped
@@ -43,6 +42,10 @@ class SoundscapeServiceConnection @Inject constructor() {
         soundscapeService?.setStreetPreviewMode(on, latitude, longitude)
     }
 
+    fun startRoute(routeName: String) {
+        soundscapeService?.startRoute(routeName)
+    }
+
     // needed to communicate with the service.
     private val connection = object : ServiceConnection {
 

app/src/main/java/org/scottishtecharmy/soundscape/screens/markers_routes/screens/routedetailsscreen/RouteDetailsScreen.kt

@@ -32,6 +32,7 @@ import androidx.compose.ui.unit.sp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavController
+import androidx.navigation.NavGraph.Companion.findStartDestination
 import androidx.navigation.compose.rememberNavController
 import org.scottishtecharmy.soundscape.R
 import org.scottishtecharmy.soundscape.database.local.model.RouteData
@@ -54,6 +55,7 @@ fun RouteDetailsScreenVM(
         modifier,
         uiState,
         getRouteByName = { viewModel.getRouteByName(routeName) },
+        startRoute = { viewModel.startRoute(routeName) },
         clearErrorMessage = { viewModel.clearErrorMessage() }
     )
 }
@@ -65,6 +67,7 @@ fun RouteDetailsScreen(
     modifier: Modifier,
     uiState: RouteDetailsUiState,
     getRouteByName: (routeName: String) -> Unit,
+    startRoute: (routeName: String) -> Unit,
     clearErrorMessage: () -> Unit,
 ) {
     // Observe the UI state from the ViewModel
@@ -151,7 +154,16 @@ fun RouteDetailsScreen(
                                 iconText = stringResource(R.string.route_detail_action_start_route),
                                 fontSize = 28.sp,
                                 fontWeight = FontWeight.Bold,
-                                onClick = { /*TODO*/ })
+                                onClick = {
+                                    startRoute(route.name)
+                                    // Pop up to the home screen
+                                    navController.navigate(HomeRoutes.Home.route) {
+                                        popUpTo(navController.graph.findStartDestination().id) {
+                                            inclusive = true
+                                        }
+                                        launchSingleTop = true
+                                    }
+                                })
                             IconWithTextButton(
                                 icon = Icons.Default.Edit,
                                 iconModifier = Modifier.size(40.dp),
@@ -202,6 +214,7 @@ fun RoutesDetailsPopulatedPreview() {
                 selectedRoute = RouteData("Route 2", "Description 2")
             ),
             getRouteByName = {},
+            startRoute = {},
             clearErrorMessage = {}
         )
     }
@@ -217,6 +230,7 @@ fun RoutesDetailsLoadingPreview() {
             uiState = RouteDetailsUiState(isLoading = true),
             modifier = Modifier,
             getRouteByName = {},
+            startRoute = {},
             clearErrorMessage = {}
         )
     }
@@ -232,6 +246,7 @@ fun RoutesDetailsEmptyPreview() {
             modifier = Modifier,
             uiState = RouteDetailsUiState(),
             getRouteByName = {},
+            startRoute = {},
             clearErrorMessage = {}
         )
     }

app/src/main/java/org/scottishtecharmy/soundscape/screens/markers_routes/screens/routedetailsscreen/RouteDetailsViewModel.kt

@@ -7,15 +7,16 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
+import org.scottishtecharmy.soundscape.SoundscapeServiceConnection
 import org.scottishtecharmy.soundscape.database.repository.RoutesRepository
 import javax.inject.Inject
 
 
 @HiltViewModel
 class RouteDetailsViewModel @Inject constructor(
-    private val routesRepository: RoutesRepository
+    private val routesRepository: RoutesRepository,
+    private val soundscapeServiceConnection: SoundscapeServiceConnection
 ) : ViewModel() {
-
     private val _uiState = MutableStateFlow(RouteDetailsUiState())
     val uiState: StateFlow<RouteDetailsUiState> = _uiState.asStateFlow()
 
@@ -61,6 +62,10 @@ class RouteDetailsViewModel @Inject constructor(
         }
     }
 
+    fun startRoute(routeName: String) {
+        soundscapeServiceConnection.startRoute(routeName)
+    }
+
     fun clearErrorMessage() {
         _uiState.value = _uiState.value.copy(errorMessage = null)
     }

app/src/main/java/org/scottishtecharmy/soundscape/services/RoutePlayer.kt

@@ -17,14 +17,14 @@ class RoutePlayer(val service: SoundscapeService) {
     private var currentMarker = -1
     private val coroutineScope = CoroutineScope(Job())
 
-    fun setupCurrentRoute() {
+    fun startRoute(routeName: String) {
         val realm = RealmConfiguration.getMarkersInstance()
         val routesDao = RoutesDao(realm)
         val routesRepository = RoutesRepository(routesDao)
 
-        Log.e(TAG, "setupCurrentRoute")
+        Log.e(TAG, "startRoute")
         coroutineScope.launch {
-            val dbRoutes = routesRepository.getRoutes()
+            val dbRoutes = routesRepository.getRoute(routeName)
             if(dbRoutes.isNotEmpty()) {
                 currentRouteData = dbRoutes[0].copyFromRealm()
             }

app/src/main/java/org/scottishtecharmy/soundscape/services/SoundscapeService.kt

@@ -80,7 +80,7 @@ class SoundscapeService : MediaSessionService() {
     private var audioBeacon: Long = 0
 
     // Geo engine
-    var geoEngine = GeoEngine()
+    private var geoEngine = GeoEngine()
 
     // Flow to return beacon location
     private val _beaconFlow = MutableStateFlow<LngLatAlt?>(null)
@@ -358,9 +358,9 @@ class SoundscapeService : MediaSessionService() {
     }
 
     private lateinit var routePlayer : RoutePlayer
-    fun setupCurrentRoute() {
-//        routePlayer = RoutePlayer(this)
-//        routePlayer.setupCurrentRoute()
+    fun startRoute(routeName: String) {
+        routePlayer = RoutePlayer(this)
+        routePlayer.startRoute(routeName)
     }
 
     /**