Moves navController back into Compose

Adds a listener for newIntents
Fixes the App losing the back stack of screens

app/src/main/java/com/vitorpamplona/amethyst/ui/MainActivity.kt

@@ -17,16 +17,11 @@ import androidx.appcompat.app.AppCompatDelegate
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Surface
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.core.os.LocaleListCompat
 import androidx.lifecycle.viewmodel.compose.viewModel
-import androidx.navigation.NavHostController
-import androidx.navigation.compose.rememberNavController
 import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.LocalPreferences
 import com.vitorpamplona.amethyst.ServiceManager
@@ -44,7 +39,6 @@ import com.vitorpamplona.amethyst.ui.components.DefaultMutedSetting
 import com.vitorpamplona.amethyst.ui.components.keepPlayingMutex
 import com.vitorpamplona.amethyst.ui.navigation.Route
 import com.vitorpamplona.amethyst.ui.navigation.debugState
-import com.vitorpamplona.amethyst.ui.navigation.getRouteWithArguments
 import com.vitorpamplona.amethyst.ui.note.Nip47
 import com.vitorpamplona.amethyst.ui.screen.AccountScreen
 import com.vitorpamplona.amethyst.ui.screen.AccountStateViewModel
@@ -58,8 +52,6 @@ import java.net.URLEncoder
 import java.nio.charset.StandardCharsets
 
 class MainActivity : AppCompatActivity() {
-    lateinit var navController: NavHostController
-
     @RequiresApi(Build.VERSION_CODES.R)
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -75,7 +67,6 @@ class MainActivity : AppCompatActivity() {
         }
 
         setContent {
-            navController = rememberNavController()
             val themeViewModel: ThemeViewModel = viewModel()
 
             themeViewModel.onChange(LocalPreferences.getTheme())
@@ -86,20 +77,9 @@ class MainActivity : AppCompatActivity() {
                         AccountStateViewModel(this@MainActivity)
                     }
 
-                    AccountScreen(accountStateViewModel, themeViewModel, navController)
+                    AccountScreen(accountStateViewModel, themeViewModel)
                 }
             }
-
-            var actionableNextPage by remember { mutableStateOf(startingPage) }
-            actionableNextPage?.let {
-                LaunchedEffect(it) {
-                    navController.navigate(it) {
-                        popUpTo(Route.Home.route)
-                        launchSingleTop = true
-                    }
-                }
-                actionableNextPage = null
-            }
         }
 
         val networkRequest = NetworkRequest.Builder()
@@ -161,36 +141,7 @@ class MainActivity : AppCompatActivity() {
     override fun onNewIntent(intent: Intent?) {
         super.onNewIntent(intent)
 
-        if (this::navController.isInitialized) {
+        println("AAA -OnNew Intent")
-            val uri = intent?.data?.toString()
-            val startingPage = uriToRoute(uri)
-
-            startingPage?.let { route ->
-                val currentRoute = getRouteWithArguments(navController)
-                if (!isSameRoute(currentRoute, route)) {
-                    navController.navigate(route) {
-                        popUpTo(Route.Home.route)
-                        launchSingleTop = true
-                    }
-                }
-            }
-        }
-    }
-
-    private fun isSameRoute(currentRoute: String?, newRoute: String): Boolean {
-        if (currentRoute == null) return false
-
-        if (currentRoute == newRoute) {
-            return true
-        }
-
-        if (newRoute.startsWith("Event/") && currentRoute.contains("/")) {
-            if (newRoute.split("/")[1] == currentRoute.split("/")[1]) {
-                return true
-            }
-        }
-
-        return false
     }
 
     @OptIn(DelicateCoroutinesApi::class)

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/AppNavigation.kt

@@ -1,12 +1,22 @@
 package com.vitorpamplona.amethyst.ui.navigation
 
+import android.content.Context
+import android.content.ContextWrapper
+import android.content.Intent
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.platform.LocalContext
+import androidx.core.util.Consumer
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
+import com.vitorpamplona.amethyst.ui.MainActivity
 import com.vitorpamplona.amethyst.ui.note.UserReactionsViewModel
 import com.vitorpamplona.amethyst.ui.screen.NostrChatroomListKnownFeedViewModel
 import com.vitorpamplona.amethyst.ui.screen.NostrChatroomListNewFeedViewModel
@@ -36,6 +46,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.SearchScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.SettingsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.ThreadScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.VideoScreen
+import com.vitorpamplona.amethyst.ui.uriToRoute
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
@@ -54,6 +65,7 @@ fun AppNavigation(
 
     navController: NavHostController,
     accountViewModel: AccountViewModel,
+    startingPage: String? = null,
     themeViewModel: ThemeViewModel
 ) {
     val scope = rememberCoroutineScope()
@@ -237,4 +249,58 @@ fun AppNavigation(
             })
         }
     }
+
+    var actionableNextPage by remember { mutableStateOf(startingPage) }
+    actionableNextPage?.let {
+        LaunchedEffect(it) {
+            navController.navigate(it) {
+                popUpTo(Route.Home.route)
+                launchSingleTop = true
+            }
+        }
+        actionableNextPage = null
+    }
+
+    val activity = LocalContext.current.getActivity()
+    DisposableEffect(navController) {
+        val consumer = Consumer<Intent> { intent ->
+            val uri = intent?.data?.toString()
+            val newPage = uriToRoute(uri)
+
+            newPage?.let { route ->
+                val currentRoute = getRouteWithArguments(navController)
+                if (!isSameRoute(currentRoute, route)) {
+                    navController.navigate(route) {
+                        popUpTo(Route.Home.route)
+                        launchSingleTop = true
+                    }
+                }
+            }
+        }
+        activity.addOnNewIntentListener(consumer)
+        onDispose {
+            activity.removeOnNewIntentListener(consumer)
+        }
+    }
+}
+
+fun Context.getActivity(): MainActivity {
+    if (this is MainActivity) return this
+    return if (this is ContextWrapper) baseContext.getActivity() else getActivity()
+}
+
+private fun isSameRoute(currentRoute: String?, newRoute: String): Boolean {
+    if (currentRoute == null) return false
+
+    if (currentRoute == newRoute) {
+        return true
+    }
+
+    if (newRoute.startsWith("Event/") && currentRoute.contains("/")) {
+        if (newRoute.split("/")[1] == currentRoute.split("/")[1]) {
+            return true
+        }
+    }
+
+    return false
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/AccountScreen.kt

@@ -7,7 +7,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.lifecycle.viewmodel.compose.viewModel
-import androidx.navigation.NavHostController
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.MainScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedOff.LoginPage
@@ -15,8 +14,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedOff.LoginPage
 @Composable
 fun AccountScreen(
     accountStateViewModel: AccountStateViewModel,
-    themeViewModel: ThemeViewModel,
+    themeViewModel: ThemeViewModel
-    navController: NavHostController
 ) {
     val accountState by accountStateViewModel.accountContent.collectAsState()
 
@@ -32,7 +30,7 @@ fun AccountScreen(
                         factory = AccountViewModel.Factory(state.account)
                     )
 
-                    MainScreen(accountViewModel, accountStateViewModel, themeViewModel, navController)
+                    MainScreen(accountViewModel, accountStateViewModel, themeViewModel)
                 }
                 is AccountState.LoggedInViewOnly -> {
                     val accountViewModel: AccountViewModel = viewModel(
@@ -40,7 +38,7 @@ fun AccountScreen(
                         factory = AccountViewModel.Factory(state.account)
                     )
 
-                    MainScreen(accountViewModel, accountStateViewModel, themeViewModel, navController)
+                    MainScreen(accountViewModel, accountStateViewModel, themeViewModel)
                 }
             }
         }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/MainScreen.kt

@@ -24,11 +24,12 @@ import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavBackStackEntry
-import androidx.navigation.NavHostController
 import androidx.navigation.compose.currentBackStackEntryAsState
+import androidx.navigation.compose.rememberNavController
 import com.vitorpamplona.amethyst.ui.buttons.ChannelFabColumn
 import com.vitorpamplona.amethyst.ui.buttons.NewCommunityNoteButton
 import com.vitorpamplona.amethyst.ui.buttons.NewImageButton
@@ -60,8 +61,7 @@ import kotlinx.coroutines.launch
 fun MainScreen(
     accountViewModel: AccountViewModel,
     accountStateViewModel: AccountStateViewModel,
-    themeViewModel: ThemeViewModel,
+    themeViewModel: ThemeViewModel
-    navController: NavHostController
 ) {
     val scope = rememberCoroutineScope()
     val scaffoldState = rememberScaffoldState(rememberDrawerState(DrawerValue.Closed))
@@ -71,6 +71,7 @@ fun MainScreen(
         skipHalfExpanded = true
     )
 
+    val navController = rememberNavController()
     val navState = navController.currentBackStackEntryAsState()
 
     val nav = remember(navController) {