MediaFragment: update playhead progress/fully watched on resume

app/src/main/java/org/mosad/teapod/ui/activity/main/fragments/MediaFragment.kt

@@ -89,6 +89,7 @@ class MediaFragment(private val mediaIdStr: String) : Fragment() {
                     binding.textTitle.text = model.upNextSeries.panel.title
                 }
 
+                // needs to be called after model.updateOnResume()
                 if (fragments.elementAtOrNull(0) is MediaFragmentEpisodes) {
                     (fragments[0] as MediaFragmentEpisodes).updateWatchedState()
                 }

app/src/main/java/org/mosad/teapod/ui/activity/main/fragments/MediaFragmentEpisodes.kt

@@ -54,23 +54,10 @@ class MediaFragmentEpisodes : Fragment() {
         }
     }
 
-    override fun onResume() {
-        super.onResume()
-
-        // if adapterRecEpisodes is initialized, update the watched state for the episodes
-        if (this::adapterRecEpisodes.isInitialized) {
-            // TODO reimplement, if needed
-            // update via playheads?
-//            model.media.playlist.forEachIndexed { index, episodeInfo ->
-//                adapterRecEpisodes.updateWatchedState(episodeInfo.watched, index)
-//            }
-//            adapterRecEpisodes.notifyDataSetChanged()
-        }
-    }
-
+    @SuppressLint("NotifyDataSetChanged")
     fun updateWatchedState() {
-        // TODO update watched state of all episodes
-        // use a mutable list for playheads and notify dataset changed
+        // model.currentPlayheads is a val mutable map -> notify dataset changed
+        adapterRecEpisodes.notifyDataSetChanged()
     }
 
     private fun showSeasonSelection(v: View) {

app/src/main/java/org/mosad/teapod/ui/activity/main/viewmodel/MediaFragmentViewModel.kt

@@ -3,7 +3,6 @@ package org.mosad.teapod.ui.activity.main.viewmodel
 import android.app.Application
 import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.viewModelScope
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.joinAll
 import kotlinx.coroutines.launch
 import org.mosad.teapod.parser.crunchyroll.*
@@ -31,7 +30,7 @@ class MediaFragmentViewModel(application: Application) : AndroidViewModel(applic
     val currentEpisodesCrunchy = arrayListOf<Episode>() // used for EpisodeItemAdapter (easier updates)
 
     // additional media info
-    var currentPlayheads: PlayheadsMap = emptyMap()
+    val currentPlayheads: MutableMap<String, PlayheadObject> = mutableMapOf()
     var isWatchlist = false
         internal set
     var upNextSeries = NoneUpNextSeriesItem
@@ -85,7 +84,8 @@ class MediaFragmentViewModel(application: Application) : AndroidViewModel(applic
             viewModelScope.launch {
                 // get playheads (including fully watched state)
                 val episodeIDs = episodesCrunchy.items.map { it.id }
-                currentPlayheads = Crunchyroll.playheads(episodeIDs)
+                currentPlayheads.clear()
+                currentPlayheads.putAll(Crunchyroll.playheads(episodeIDs))
             },
             viewModelScope.launch { loadTmdbInfo() } // use tmdb search to get media info
         ).joinAll()
@@ -152,13 +152,14 @@ class MediaFragmentViewModel(application: Application) : AndroidViewModel(applic
     }
 
     suspend fun updateOnResume() {
-        listOf(
+        joinAll(
             viewModelScope.launch {
                 val episodeIDs = episodesCrunchy.items.map { it.id }
-                currentPlayheads = Crunchyroll.playheads(episodeIDs)
+                currentPlayheads.clear()
+                currentPlayheads.putAll(Crunchyroll.playheads(episodeIDs))
             },
             viewModelScope.launch { upNextSeries = Crunchyroll.upNextSeries(seriesCrunchy.id) }
-        ).joinAll()
+        )
     }
 
     /**