feat(android): add support for identifying read posts

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/LobstersApp.kt

@@ -218,6 +218,7 @@ fun LobstersApp(
               lazyPagingItems = hottestPosts,
               listState = hottestListState,
               isPostSaved = viewModel::isPostSaved,
+              isPostRead = viewModel::isPostRead,
               postActions = postActions,
             )
           }
@@ -227,6 +228,7 @@ fun LobstersApp(
               lazyPagingItems = newestPosts,
               listState = newestListState,
               isPostSaved = viewModel::isPostSaved,
+              isPostRead = viewModel::isPostRead,
               postActions = postActions,
             )
           }

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/ext.kt

@@ -36,11 +36,13 @@ fun rememberPostActions(
 ): PostActions {
   return remember {
     object : PostActions {
-      override fun viewPost(postUrl: String, commentsUrl: String) {
+      override fun viewPost(postId: String, postUrl: String, commentsUrl: String) {
+        viewModel.markPostAsRead(postId)
         urlLauncher.openUri(postUrl.ifEmpty { commentsUrl })
       }
 
       override fun viewComments(postId: String) {
+        viewModel.markPostAsRead(postId)
         val currentRoute = navController.currentDestination?.route
         val newRoute =
           Destinations.Comments.route.replace(Destinations.Comments.placeholder, postId)

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/lists/DatabasePosts.kt

@@ -62,6 +62,7 @@ fun DatabasePosts(
             ListItem(
               item = item,
               isSaved = { true },
+              isRead = { false },
               postActions = postActions,
             )
             HorizontalDivider()

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/lists/ListItem.kt

@@ -24,10 +24,12 @@ import me.saket.swipe.SwipeableActionsBox
 fun ListItem(
   item: SavedPost,
   isSaved: suspend (SavedPost) -> Boolean,
+  isRead: suspend (String) -> Boolean,
   postActions: PostActions,
   modifier: Modifier = Modifier,
 ) {
   val saved by produceState(false, item) { value = isSaved(item) }
+  val read by produceState(false, item.shortId) { value = isRead(item.shortId) }
   val commentsAction =
     SwipeAction(
       icon = rememberVectorPainter(Icons.Filled.Reply),
@@ -40,6 +42,7 @@ fun ListItem(
     LobstersCard(
       post = item,
       isSaved = saved,
+      isRead = read,
       postActions = postActions,
       modifier = modifier,
     )

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/lists/NetworkPosts.kt

@@ -42,6 +42,7 @@ fun NetworkPosts(
   lazyPagingItems: LazyPagingItems<LobstersPost>,
   listState: LazyListState,
   isPostSaved: suspend (SavedPost) -> Boolean,
+  isPostRead: suspend (String) -> Boolean,
   postActions: PostActions,
   modifier: Modifier = Modifier,
 ) {
@@ -71,6 +72,7 @@ fun NetworkPosts(
             ListItem(
               item = dbModel,
               isSaved = isPostSaved,
+              isRead = isPostRead,
               postActions = postActions,
             )
 

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/lists/SearchList.kt

@@ -75,6 +75,7 @@ fun SearchList(
         lazyPagingItems = lazyPagingItems,
         listState = listState,
         isPostSaved = isPostSaved,
+        isPostRead = { false },
         postActions = postActions,
         modifier = modifier,
       )

android/src/main/kotlin/dev/msfjarvis/claw/android/viewmodel/ClawViewModel.kt

@@ -48,8 +48,9 @@ class ClawViewModel
 constructor(
   private val api: LobstersApi,
   private val searchApi: LobstersSearchApi,
-  private val savedPostsRepository: SavedPostsRepository,
   private val commentsRepository: CommentsRepository,
+  private val readPostsRepository: ReadPostsRepository,
+  private val savedPostsRepository: SavedPostsRepository,
   private val linkMetadataRepository: LinkMetadataRepository,
   private val dataTransferRepository: DataTransferRepository,
   private val pagingSourceFactory: LobstersPagingSource.Factory,
@@ -147,6 +148,12 @@ constructor(
 
   suspend fun exportPosts(output: OutputStream) = dataTransferRepository.exportPosts(output)
 
+  fun markPostAsRead(postId: String) {
+    viewModelScope.launch { readPostsRepository.markRead(postId) }
+  }
+
+  suspend fun isPostRead(postId: String) = readPostsRepository.isRead(postId)
+
   /**
    * Parses a given [String] into a [LocalDateTime]. This method is only intended to be used for
    * dates in the format returned by the Lobsters API, and is not a general purpose parsing

android/src/main/kotlin/dev/msfjarvis/claw/android/viewmodel/ReadPostsRepository.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright © 2021-2023 Harsh Shandilya.
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+package dev.msfjarvis.claw.android.viewmodel
+
+import dev.msfjarvis.claw.core.injection.DatabaseDispatcher
+import dev.msfjarvis.claw.database.local.ReadPostsQueries
+import javax.inject.Inject
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.withContext
+
+class ReadPostsRepository
+@Inject
+constructor(
+  private val readPostsQueries: ReadPostsQueries,
+  @DatabaseDispatcher private val dbDispatcher: CoroutineDispatcher,
+) {
+
+  suspend fun markRead(postId: String) {
+    withContext(dbDispatcher) { readPostsQueries.markRead(postId) }
+  }
+
+  suspend fun isRead(postId: String): Boolean =
+    withContext(dbDispatcher) { readPostsQueries.isRead(postId).executeAsOneOrNull() != null }
+}

common/src/main/kotlin/dev/msfjarvis/claw/common/comments/CommentEntry.kt

@@ -70,7 +70,7 @@ internal fun CommentsHeader(
       modifier = Modifier.padding(16.dp).fillMaxWidth(),
       verticalArrangement = Arrangement.spacedBy(8.dp),
     ) {
-      PostTitle(title = postDetails.title)
+      PostTitle(title = postDetails.title, isRead = false)
       TagRow(tags = postDetails.tags.toImmutableList())
       Spacer(Modifier.height(4.dp))
 
@@ -78,7 +78,9 @@ internal fun CommentsHeader(
         PostLink(
           linkMetadata = linkMetadata,
           modifier =
-            Modifier.clickable { postActions.viewPost(linkMetadata.url, postDetails.commentsUrl) },
+            Modifier.clickable {
+              postActions.viewPost(postDetails.shortId, linkMetadata.url, postDetails.commentsUrl)
+            },
         )
         Spacer(Modifier.height(4.dp))
       }

common/src/main/kotlin/dev/msfjarvis/claw/common/posts/LobstersCard.kt

@@ -62,6 +62,7 @@ import kotlinx.collections.immutable.toImmutableList
 fun LobstersCard(
   post: SavedPost,
   isSaved: Boolean,
+  isRead: Boolean,
   postActions: PostActions,
   modifier: Modifier = Modifier,
 ) {
@@ -70,7 +71,7 @@ fun LobstersCard(
     modifier =
       modifier
         .fillMaxWidth()
-        .clickable { postActions.viewPost(post.url, post.commentsUrl) }
+        .clickable { postActions.viewPost(post.shortId, post.url, post.commentsUrl) }
         .background(MaterialTheme.colorScheme.background)
         .padding(start = 16.dp, top = 16.dp, end = 4.dp, bottom = 16.dp),
   ) {
@@ -81,6 +82,7 @@ fun LobstersCard(
       PostDetails(
         modifier = Modifier.weight(1f),
         post = post,
+        isRead = isRead,
       )
       Column(
         modifier = Modifier.wrapContentHeight(),
@@ -110,9 +112,9 @@ fun LobstersCard(
 }
 
 @Composable
-fun PostDetails(post: SavedPost, modifier: Modifier = Modifier) {
+fun PostDetails(post: SavedPost, isRead: Boolean, modifier: Modifier = Modifier) {
   Column(modifier = modifier, verticalArrangement = Arrangement.spacedBy(8.dp)) {
-    PostTitle(title = post.title)
+    PostTitle(title = post.title, isRead = isRead)
     TagRow(tags = post.tags.toImmutableList())
     Spacer(Modifier.height(4.dp))
     Submitter(
@@ -126,13 +128,14 @@ fun PostDetails(post: SavedPost, modifier: Modifier = Modifier) {
 @Composable
 internal fun PostTitle(
   title: String,
+  isRead: Boolean,
   modifier: Modifier = Modifier,
 ) {
   Text(
     text = title,
     modifier = modifier,
     style = MaterialTheme.typography.titleMedium,
-    fontWeight = FontWeight.Bold,
+    fontWeight = if (isRead) FontWeight.Normal else FontWeight.Bold,
     color = MaterialTheme.colorScheme.onBackground,
   )
 }
@@ -261,10 +264,11 @@ fun LobstersCardPreview() {
           tags = listOf("databases", "apis"),
           description = "",
         ),
+      isRead = true,
       isSaved = true,
       postActions =
         object : PostActions {
-          override fun viewPost(postUrl: String, commentsUrl: String) {}
+          override fun viewPost(postId: String, postUrl: String, commentsUrl: String) {}
 
           override fun viewComments(postId: String) {}
 

common/src/main/kotlin/dev/msfjarvis/claw/common/posts/PostActions.kt

@@ -13,7 +13,7 @@ import dev.msfjarvis.claw.model.LobstersPostDetails
 
 @Stable
 interface PostActions {
-  fun viewPost(postUrl: String, commentsUrl: String)
+  fun viewPost(postId: String, postUrl: String, commentsUrl: String)
 
   fun viewComments(postId: String)