app: add post details methods to VM

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

app/src/main/java/dev/msfjarvis/lobsters/data/repo/LobstersRepository.kt

@@ -4,6 +4,7 @@ import dev.msfjarvis.lobsters.data.api.LobstersApi
 import dev.msfjarvis.lobsters.data.local.SavedPost
 import dev.msfjarvis.lobsters.database.LobstersDatabase
 import dev.msfjarvis.lobsters.model.LobstersPost
+import dev.msfjarvis.lobsters.model.LobstersPostDetails
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -36,6 +37,11 @@ class LobstersRepository(
       return@withContext lobstersApi.getNewestPosts(page)
     }
 
+  suspend fun fetchPostDetails(postId: String): LobstersPostDetails =
+    withContext(Dispatchers.IO) {
+      return@withContext lobstersApi.getPostDetails(postId)
+    }
+
   // https://issuetracker.google.com/issues/181221325
   @Suppress("NewApi")
   suspend fun updateCache() {

app/src/main/java/dev/msfjarvis/lobsters/ui/viewmodel/LobstersViewModel.kt

@@ -11,6 +11,7 @@ import dev.msfjarvis.lobsters.data.preferences.ClawPreferences
 import dev.msfjarvis.lobsters.data.remote.HottestPostsPagingSource
 import dev.msfjarvis.lobsters.data.remote.NewestPostsPagingSource
 import dev.msfjarvis.lobsters.data.repo.LobstersRepository
+import dev.msfjarvis.lobsters.model.LobstersPostDetails
 import javax.inject.Inject
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -62,6 +63,10 @@ constructor(
     clawPreferences.toggleSortingOrder()
   }
 
+  suspend fun getPostDetails(postId: String): LobstersPostDetails {
+    return lobstersRepository.fetchPostDetails(postId)
+  }
+
   fun reloadHottestPosts() {
     hottestPostsPagingSource?.invalidate()
   }