Check if app installed on phone

kmp/src/commonMain/composeResources/values/strings.xml

@@ -31,4 +31,6 @@
     <string name="add_task">Add task</string>
     <string name="show_unstarted">Show unstarted</string>
     <string name="show_completed">Show completed</string>
+    <string name="wear_install_app">Install on phone</string>
+    <string name="wear_unknown_error">Unknown error</string>
 </resources>

wear/src/main/java/org/tasks/presentation/MainActivity.kt

@@ -8,14 +8,17 @@ package org.tasks.presentation
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.activity.viewModels
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -23,6 +26,8 @@ import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavType
 import androidx.navigation.navArgument
 import androidx.paging.compose.collectAsLazyPagingItems
+import androidx.wear.compose.material.Chip
+import androidx.wear.compose.material.CircularProgressIndicator
 import androidx.wear.compose.material.MaterialTheme
 import androidx.wear.compose.material.Text
 import androidx.wear.compose.material.TimeText
@@ -31,6 +36,8 @@ import androidx.wear.compose.navigation.composable
 import androidx.wear.compose.navigation.rememberSwipeDismissableNavController
 import androidx.wear.tooling.preview.devices.WearDevices
 import com.google.android.horologist.compose.layout.AppScaffold
+import kotlinx.coroutines.delay
+import org.jetbrains.compose.resources.stringResource
 import org.tasks.presentation.screens.MenuScreen
 import org.tasks.presentation.screens.MenuViewModel
 import org.tasks.presentation.screens.SettingsScreen
@@ -38,8 +45,13 @@ import org.tasks.presentation.screens.SettingsViewModel
 import org.tasks.presentation.screens.TaskListScreen
 import org.tasks.presentation.screens.TaskListViewModel
 import org.tasks.presentation.theme.TasksTheme
+import tasks.kmp.generated.resources.Res
+import tasks.kmp.generated.resources.wear_install_app
+import tasks.kmp.generated.resources.wear_unknown_error
 
 class MainActivity : ComponentActivity() {
+    private val viewModel: MainActivityViewModel by viewModels()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         installSplashScreen()
 
@@ -57,10 +69,90 @@ class MainActivity : ComponentActivity() {
                     val taskListViewModel: TaskListViewModel = viewModel()
                     val taskListItems = taskListViewModel.uiItems.collectAsLazyPagingItems()
                     val settingsViewModel: SettingsViewModel = viewModel()
+                    val connected = viewModel.uiState.collectAsStateWithLifecycle().value
+                    LaunchedEffect(connected) {
+                        when (connected) {
+                            NodesActionScreenState.ApiNotAvailable -> {
+                                navController.popBackStack()
+                                navController.navigate("error")
+                            }
+
+                            is NodesActionScreenState.Loaded -> {
+                                navController.popBackStack()
+                                if (connected.nodeList.any { it.type == NodeTypeUiModel.PHONE && it.appInstalled }) {
+                                    navController.navigate("task_list")
+                                } else {
+                                    connected
+                                        .nodeList
+                                        .firstOrNull { it.type == NodeTypeUiModel.UNKNOWN }
+                                        ?.let {
+                                            navController.navigate("error?type=${Errors.APP_NOT_INSTALLED},nodeId=${it.id}")
+                                        }
+                                        ?: navController.navigate("error")
+                                }
+                            }
+
+                            else -> {}
+                        }
+                    }
                     SwipeDismissableNavHost(
-                        startDestination = "task_list",
+                        startDestination = "loading",
                         navController = navController,
                     ) {
+                        composable("loading") {
+                            Box(
+                                modifier = Modifier.fillMaxSize(),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                CircularProgressIndicator()
+                            }
+                        }
+                        composable(
+                            route = "error?type={type},nodeId={nodeId}",
+                            arguments = listOf(
+                                navArgument("type") {
+                                    type = NavType.EnumType(Errors::class.java)
+                                    defaultValue = Errors.UNKNOWN
+                                },
+                                navArgument("nodeId") {
+                                    type = NavType.StringType
+                                    nullable = true
+                                }
+                            )
+                        ) {
+                            val type = it.arguments?.getSerializable("type") as? Errors
+                            val nodeId = it.arguments?.getString("nodeId")
+                            Box(
+                                modifier = Modifier.fillMaxSize(),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                when (type) {
+                                    Errors.APP_NOT_INSTALLED -> {
+                                        LaunchedEffect(Unit) {
+                                            while (true) {
+                                                delay(5000)
+                                                viewModel.loadNodes()
+                                            }
+                                        }
+                                        Chip(
+                                            onClick = { viewModel.installOnNode(nodeId) },
+                                            label = {
+                                                Text(
+                                                    text = stringResource(Res.string.wear_install_app),
+                                                    maxLines = 1,
+                                                    overflow = TextOverflow.Ellipsis
+                                                )
+                                            },
+                                        )
+                                    }
+
+                                    else ->
+                                        Text(
+                                            text = stringResource(Res.string.wear_unknown_error),
+                                        )
+                                }
+                            }
+                        }
                         composable("task_list") {
                             TaskListScreen(
                                 uiItems = taskListItems,

wear/src/main/java/org/tasks/presentation/MainActivityViewModel.kt

@@ -1,4 +1,108 @@
 package org.tasks.presentation
 
-class MainActivityViewModel {
-}
+import android.app.Application
+import android.util.Log
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
+import com.google.android.horologist.annotations.ExperimentalHorologistApi
+import com.google.android.horologist.data.WearDataLayerRegistry
+import com.google.android.horologist.data.apphelper.AppInstallationStatus
+import com.google.android.horologist.data.apphelper.AppInstallationStatusNodeType
+import com.google.android.horologist.datalayer.watch.WearDataLayerAppHelper
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import org.tasks.extensions.wearDataLayerRegistry
+
+@OptIn(ExperimentalHorologistApi::class)
+class MainActivityViewModel(
+    application: Application,
+) : AndroidViewModel(application) {
+    fun installOnNode(nodeId: String?) = viewModelScope.launch {
+        if (nodeId == null) {
+            Log.d("MainActivityViewModel", "Missing nodeId")
+        } else {
+            helper.installOnNode(nodeId)
+        }
+    }
+
+    private val _uiState =
+        MutableStateFlow<NodesActionScreenState>(NodesActionScreenState.Idle)
+    val uiState = _uiState.asStateFlow()
+    private val registry: WearDataLayerRegistry by lazy {
+        application.wearDataLayerRegistry(viewModelScope)
+    }
+    private val helper: WearDataLayerAppHelper by lazy {
+        WearDataLayerAppHelper(
+            context = application,
+            registry = registry,
+            scope = viewModelScope,
+        )
+    }
+
+    init {
+        _uiState.value = NodesActionScreenState.Loading
+
+        loadNodes()
+    }
+
+    fun loadNodes() = viewModelScope.launch {
+        if (!helper.isAvailable()) {
+            _uiState.value = NodesActionScreenState.ApiNotAvailable
+        } else {
+            _uiState.value = NodesActionScreenState.Loaded(
+                nodeList = helper.connectedNodes().map { node ->
+                    val type = when (node.appInstallationStatus) {
+                        is AppInstallationStatus.Installed -> {
+                            val status =
+                                node.appInstallationStatus as AppInstallationStatus.Installed
+                            when (status.nodeType) {
+                                AppInstallationStatusNodeType.WATCH -> NodeTypeUiModel.WATCH
+                                AppInstallationStatusNodeType.PHONE -> NodeTypeUiModel.PHONE
+                            }
+                        }
+
+                        AppInstallationStatus.NotInstalled -> NodeTypeUiModel.UNKNOWN
+                    }
+
+                    NodeUiModel(
+                        id = node.id,
+                        name = node.displayName,
+                        appInstalled = node.appInstallationStatus is AppInstallationStatus.Installed,
+                        type = type,
+                    )
+                },
+            ).also {
+                Log.d("MainActivityViewModel", "Loaded: $it")
+            }
+        }
+    }
+}
+
+data class NodeUiModel(
+    val id: String,
+    val name: String,
+    val appInstalled: Boolean,
+    val type: NodeTypeUiModel,
+)
+
+enum class NodeTypeUiModel {
+    WATCH,
+    PHONE,
+    UNKNOWN,
+}
+
+enum class Errors {
+    APP_NOT_INSTALLED,
+    UNKNOWN
+}
+
+sealed class NodesActionScreenState {
+    data object Idle : NodesActionScreenState()
+
+    data object Loading : NodesActionScreenState()
+
+    data class Loaded(val nodeList: List<NodeUiModel>) : NodesActionScreenState()
+
+    data object ApiNotAvailable : NodesActionScreenState()
+}