1 files changed, 79 insertions, 0 deletions
diff --git a/app/src/main/java/org/terst/feedreader/ui/MainActivity.kt b/app/src/main/java/org/terst/feedreader/ui/MainActivity.kt
new file mode 100644
index 0000000..345bede
--- /dev/null
+++ b/app/src/main/java/org/terst/feedreader/ui/MainActivity.kt
@@ -0,0 +1,79 @@
+package org.terst.feedreader.ui
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.navigation.NavType
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
+import org.terst.feedreader.work.FeedFetchWorker
+import java.net.URLDecoder
+import java.net.URLEncoder
+
+const val UNREAD_FEED_ID = "__unread__"
+const val SAVED_FEED_ID = "__saved__"
+
+fun encodeNavArg(value: String): String = URLEncoder.encode(value, "UTF-8")
+fun decodeNavArg(value: String): String = URLDecoder.decode(value, "UTF-8")
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        FeedFetchWorker.schedulePeriodic(applicationContext)
+
+        setContent {
+            MaterialTheme {
+                Surface(modifier = Modifier.fillMaxSize()) {
+                    FeedReaderApp()
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun FeedReaderApp() {
+    val navController = rememberNavController()
+    NavHost(navController = navController, startDestination = "feeds") {
+        composable("feeds") {
+            FeedListScreen(
+                onOpenFeed = { feedId -> navController.navigate("articles/${encodeNavArg(feedId)}") },
+                onOpenUnread = { navController.navigate("articles/${encodeNavArg(UNREAD_FEED_ID)}") },
+                onOpenSaved = { navController.navigate("articles/${encodeNavArg(SAVED_FEED_ID)}") },
+                onAddFeed = { navController.navigate("addFeed") },
+                onSettings = { navController.navigate("settings") }
+            )
+        }
+        composable(
+            "articles/{feedId}",
+            arguments = listOf(navArgument("feedId") { type = NavType.StringType })
+        ) { backStackEntry ->
+            val feedId = decodeNavArg(backStackEntry.arguments?.getString("feedId") ?: UNREAD_FEED_ID)
+            ArticleListScreen(
+                feedId = feedId,
+                onOpenArticle = { articleId -> navController.navigate("reader/${encodeNavArg(articleId)}") },
+                onBack = { navController.popBackStack() }
+            )
+        }
+        composable(
+            "reader/{articleId}",
+            arguments = listOf(navArgument("articleId") { type = NavType.StringType })
+        ) { backStackEntry ->
+            val articleId = decodeNavArg(backStackEntry.arguments?.getString("articleId") ?: "")
+            ReaderScreen(articleId = articleId, onBack = { navController.popBackStack() })
+        }
+        composable("addFeed") {
+            AddFeedScreen(onDone = { navController.popBackStack() })
+        }
+        composable("settings") {
+            SettingsScreen(onBack = { navController.popBackStack() })
+        }
+    }
+}