[Feat]: Navigation3 기반 전체 화면 라우팅 및 딥링크 처리

app/src/main/AndroidManifest.xml

@@ -17,12 +17,21 @@
             android:windowSoftInputMode="adjustResize"
             android:exported="true"
             android:label="@string/app_name"
+            android:launchMode="singleTask"
             android:theme="@style/Theme.Todakun">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data android:scheme="todakun" />
+            </intent-filter>
 
             <!-- 카카오 공유 딥링크 -->
             <intent-filter>

app/src/main/java/com/kikidan/todakun/MainActivity.kt

@@ -1,17 +1,14 @@
 package com.kikidan.todakun
 
+import android.content.Intent
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
 import com.kikidan.designsystem.theme.TodakunTheme
+import com.kikidan.domain.model.notification.PushNotificationEvent
+import com.kikidan.navigation.TodakunRoute
+import com.kikidan.navigation.parseDeepLink
 import dagger.hilt.android.AndroidEntryPoint
 
 @AndroidEntryPoint
@@ -21,32 +18,14 @@ class MainActivity : ComponentActivity() {
         enableEdgeToEdge()
         setContent {
             TodakunTheme {
-                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    Greeting(
-                        name = "Android",
-                        modifier = Modifier.padding(innerPadding),
-                    )
-                }
+                TodakunApp(deepLinkRoute = handleDeepLinkIntent(intent))
             }
         }
     }
-}
-
-@Composable
-fun Greeting(
-    name: String,
-    modifier: Modifier = Modifier,
-) {
-    Text(
-        text = "Hello $name!",
-        modifier = modifier,
-    )
-}
 
-@Preview(showBackground = true)
-@Composable
-private fun GreetingPreview() {
-    TodakunTheme {
-        Greeting("Android")
+    /** FCM 백그라운드 알림의 PendingIntent extra를 우선 확인하고, 없으면 외부 공유 링크(intent.data)를 확인한다. */
+    private fun handleDeepLinkIntent(intent: Intent?): TodakunRoute? {
+        val deepLink = intent?.extras?.getString(PushNotificationEvent.DEEP_LINK_KEY)
+        return deepLink?.let { parseDeepLink(it) }
     }
 }