chats: implement mark as read in chat and updating on receiving new chat message

app/src/main/java/com/keylesspalace/tusky/components/chat/ChatActivity.kt

@@ -65,6 +65,7 @@ import com.mikepenz.iconics.IconicsDrawable
 import com.mikepenz.iconics.typeface.library.googlematerial.GoogleMaterial
 import com.mikepenz.iconics.utils.colorInt
 import com.mikepenz.iconics.utils.sizeDp
+import com.uber.autodispose.android.lifecycle.AndroidLifecycleScopeProvider.from
 import com.uber.autodispose.android.lifecycle.autoDispose
 import io.reactivex.Observable
 import io.reactivex.android.schedulers.AndroidSchedulers
@@ -233,6 +234,10 @@ class ChatActivity: BottomSheetActivity(),
                             editText.text.clear()
                             viewModel.media.value = listOf()
                         }
+
+                        is ChatMessageReceivedEvent -> {
+                            onRefresh()
+                        }
                     }
                 }
 
@@ -856,6 +861,17 @@ class ChatActivity: BottomSheetActivity(),
         when (fetchEnd) {
             FetchEnd.TOP -> {
                 updateMessages(msgs, fullFetch)
+
+                val pos = msgs.indexOfFirst { it.isRight() }
+
+                mastodonApi.markChatAsRead(chatId, msgs[pos].asRight().id)
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .autoDispose(this, Lifecycle.Event.ON_DESTROY)
+                        .subscribe({
+                            Log.d(TAG, "Marked new messages as read up to ${msgs[pos].asRight().id}")
+                        }, {
+                            Log.d(TAG, "Failed to mark messages as read", it)
+                        })
             }
             FetchEnd.MIDDLE -> {
                 replacePlaceholderWithMessages(msgs, fullFetch, pos)

app/src/main/java/com/keylesspalace/tusky/fragment/ChatsFragment.kt

@@ -24,6 +24,7 @@ import com.keylesspalace.tusky.components.chat.ChatActivity
 import com.keylesspalace.tusky.db.AccountManager
 import com.keylesspalace.tusky.di.Injectable
 import com.keylesspalace.tusky.entity.Chat
+import com.keylesspalace.tusky.entity.ChatMessage
 import com.keylesspalace.tusky.entity.NewChatMessage
 import com.keylesspalace.tusky.interfaces.ActionButtonActivity
 import com.keylesspalace.tusky.interfaces.ChatActionListener
@@ -31,10 +32,7 @@ import com.keylesspalace.tusky.interfaces.RefreshableFragment
 import com.keylesspalace.tusky.interfaces.ReselectableFragment
 import com.keylesspalace.tusky.network.MastodonApi
 import com.keylesspalace.tusky.network.TimelineCases
-import com.keylesspalace.tusky.repository.ChatRepository
-import com.keylesspalace.tusky.repository.ChatStatus
-import com.keylesspalace.tusky.repository.Placeholder
-import com.keylesspalace.tusky.repository.TimelineRequestMode
+import com.keylesspalace.tusky.repository.*
 import com.keylesspalace.tusky.util.*
 import com.keylesspalace.tusky.util.Either.Left
 import com.keylesspalace.tusky.view.EndlessOnScrollListener
@@ -46,6 +44,7 @@ import io.reactivex.Observable
 import io.reactivex.android.schedulers.AndroidSchedulers
 import kotlinx.android.synthetic.main.fragment_timeline.*
 import java.io.IOException
+import java.util.*
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
@@ -352,12 +351,36 @@ class ChatsFragment : BaseFragment(), Injectable, RefreshableFragment, Reselecta
                             is DomainMuteEvent -> removeAllByInstance(event.instance)
                             is StatusDeletedEvent -> deleteChatById(event.statusId)
                             is PreferenceChangedEvent -> onPreferenceChanged(event.preferenceKey)
+                            is ChatMessageReceivedEvent -> onRefresh() // TODO: proper update
                         }
                     }
             eventRegistered = true
         }
     }
 
+    /*
+    private fun onChatMessageReceived(msg: ChatMessage) {
+        val pos = findChatPosition(msg.chatId)
+        if(pos == -1) {
+
+            return
+        }
+
+        val oldChat = chats[pos].asRight()
+        val newChat = Chat(oldChat.account, oldChat.id, oldChat.unread + 1, msg, msg.createdAt)
+        val newViewData = ViewDataUtils.chatToViewData(newChat)
+
+        chats.removeAt(pos)
+        chats.add(pos, newChat.lift())
+        chats.sortByDescending {
+            if(it.isLeft()) Date(Long.MIN_VALUE)
+            else it.asRight().updatedAt
+        }
+
+        updateAdapter()
+    }
+    */
+
     private fun onPreferenceChanged(key: String) {
         val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context)
         when (key) {