app: add newest posts screen

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

app/src/main/java/dev/msfjarvis/lobsters/ui/main/LobstersApp.kt

@@ -34,9 +34,11 @@ fun LobstersApp() {
   val viewModel: LobstersViewModel = viewModel()
   val navController = rememberNavController()
   val hottestPosts = viewModel.hottestPosts.collectAsLazyPagingItems()
+  val newestPosts = viewModel.newestPosts.collectAsLazyPagingItems()
 
   val savedPosts by viewModel.savedPosts.collectAsState()
   val hottestPostsListState = rememberLazyListState()
+  val newestPostsListState = rememberLazyListState()
 
   val navBackStackEntry by navController.currentBackStackEntryAsState()
   val currentRoute =
@@ -48,9 +50,20 @@ fun LobstersApp() {
       popUpTo(navController.graph.startDestination) { inclusive = false }
     }
   }
-  val jumpToIndex: suspend (Int) -> Unit = {
-    if (hottestPosts.loadState.refresh != LoadState.Loading) {
-      hottestPostsListState.animateScrollToItem(it)
+  val jumpToIndex: suspend (Int, Destination) -> Unit = { index, screen ->
+    when (screen) {
+      Destination.Hottest -> {
+        if (hottestPosts.loadState.refresh != LoadState.Loading) {
+          hottestPostsListState.animateScrollToItem(index)
+        }
+      }
+      Destination.Newest -> {
+        if (newestPosts.loadState.refresh != LoadState.Loading) {
+          newestPostsListState.animateScrollToItem(index)
+        }
+      }
+      else -> {
+      }
     }
   }
 
@@ -80,6 +93,16 @@ fun LobstersApp() {
           refreshAction = viewModel::reloadHottestPosts,
         )
       }
+      composable(Destination.Newest.route) {
+        NetworkPosts(
+          posts = newestPosts,
+          listState = newestPostsListState,
+          modifier = Modifier.padding(bottom = innerPadding.calculateBottomPadding()),
+          isPostSaved = viewModel::isPostSaved,
+          saveAction = viewModel::toggleSave,
+          refreshAction = viewModel::reloadNewestPosts,
+        )
+      }
       composable(Destination.Saved.route) {
         SavedPosts(
           posts = savedPosts,
@@ -96,7 +119,7 @@ fun LobstersApp() {
 fun LobstersBottomNav(
   currentDestination: Destination,
   navigateToDestination: (destination: Destination) -> Unit,
-  jumpToIndex: suspend (index: Int) -> Unit,
+  jumpToIndex: suspend (index: Int, screen: Destination) -> Unit,
 ) {
   val coroutineScope = rememberCoroutineScope()
   BottomNavigation(modifier = Modifier.testTag("LobstersBottomNav")) {
@@ -115,8 +138,8 @@ fun LobstersBottomNav(
         onClick = {
           if (screen != currentDestination) {
             navigateToDestination(screen)
-          } else if (screen.route == Destination.Hottest.route) {
-            coroutineScope.launch { jumpToIndex(0) }
+          } else if (screen.route != Destination.Saved.route) {
+            coroutineScope.launch { jumpToIndex(0, screen) }
           }
         }
       )

app/src/main/java/dev/msfjarvis/lobsters/ui/navigation/Destination.kt

@@ -13,6 +13,7 @@ enum class Destination(
   @DrawableRes val badgeRes: Int,
 ) {
   Hottest("hottest", Strings.HottestPosts, R.drawable.ic_whatshot_24px),
+  Newest("newest", Strings.NewestPosts, R.drawable.ic_schedule_black_24dp),
   Saved("saved", Strings.SavedPosts, R.drawable.ic_favorite_24px),
   ;
 

app/src/main/res/drawable/ic_schedule_black_24dp.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+  android:width="24dp"
+  android:height="24dp"
+  android:viewportWidth="24"
+  android:viewportHeight="24">
+  <path
+    android:fillColor="#000000"
+    android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8zM11.78,7h-0.06c-0.4,0 -0.72,0.32 -0.72,0.72v4.72c0,0.35 0.18,0.68 0.49,0.86l4.15,2.49c0.34,0.2 0.78,0.1 0.98,-0.24 0.21,-0.34 0.1,-0.79 -0.25,-0.99l-3.87,-2.3L12.5,7.72c0,-0.4 -0.32,-0.72 -0.72,-0.72z" />
+</vector>

common/src/androidMain/kotlin/dev/msfjarvis/lobsters/utils/StringValue.kt

@@ -17,6 +17,7 @@ private fun stringEnumMapper(stringEnum: Strings): Int {
     Strings.RemoveFromSavedPosts -> R.string.remove_from_saved_posts
     Strings.SavedPosts -> R.string.saved_posts
     Strings.SubmittedBy -> R.string.submitted_by
+    Strings.NewestPosts -> R.string.newest_posts
   }
 }
 

common/src/androidMain/res/values/strings.xml

@@ -10,4 +10,5 @@
   <string name="refresh_posts_content_description">Refresh posts</string>
   <string name="open_comments">Open comments</string>
   <string name="change_sorting_order">Change sort order</string>
+  <string name="newest_posts">Newest</string>
 </resources>

common/src/commonMain/kotlin/dev/msfjarvis/lobsters/utils/Strings.kt

@@ -12,5 +12,6 @@ enum class Strings {
   RemoveFromSavedPosts,
   SavedPosts,
   SubmittedBy,
+  NewestPosts,
   ;
 }

common/src/jvmMain/kotlin/dev/msfjarvis/lobsters/utils/StringValue.kt

@@ -15,6 +15,7 @@ private fun stringEnumMapper(stringEnum: Strings): String {
     Strings.RemoveFromSavedPosts -> "Remove from saved posts"
     Strings.SavedPosts -> "Saved"
     Strings.SubmittedBy -> "submitted by %1s"
+    Strings.NewestPosts -> "Newest"
   }
 }