Improved read messages

app/js/messages_manager.js

@@ -1515,7 +1515,9 @@ angular.module('myApp.services')
                 random_id: randomIDS,
                 id: updates.id
               }, {
-                _: isChannel ? 'updateNewChannelMessage' : 'updateNewMessage',
+                _: isChannel
+                      ? 'updateNewChannelMessage'
+                      : 'updateNewMessage',
                 message: message,
                 pts: updates.pts,
                 pts_count: updates.pts_count
@@ -2846,9 +2848,21 @@ angular.module('myApp.services')
     function handleNewDialogs () {
       $timeout.cancel(newDialogsHandlePromise)
       newDialogsHandlePromise = false
-      angular.forEach(newDialogsToHandle, function (dialog) {
+      var newMaxSeenID = 0
+      angular.forEach(newDialogsToHandle, function (dialog, peerID) {
+        if (dialog.reload) {
+          reloadConversation(peerID)
+          delete newDialogsToHandle[peerID]
+        } else {
           pushDialogToStorage(dialog)
+          if (!AppPeersManager.isChannel(peerID)) {
+            newMaxSeenID = Math.max(newMaxSeenID, dialog.top_message || 0)
+          }
+        }
       })
+      if (newMaxSeenID !== false) {
+        incrementMaxSeenID(newMaxSeenID)
+      }
       $rootScope.$broadcast('dialogs_multiupdate', newDialogsToHandle)
       newDialogsToHandle = {}
     }
@@ -2898,6 +2912,15 @@ angular.module('myApp.services')
           var message = update.message
           var peerID = getMessagePeer(message)
           var historyStorage = historiesStorage[peerID]
+          var foundDialog = getDialogByPeerID(peerID)
+
+          if (!foundDialog.length) {
+            newDialogsToHandle[peerID] = {reload: true}
+            if (!newDialogsHandlePromise) {
+              newDialogsHandlePromise = $timeout(handleNewDialogs, 0)
+            }
+            break
+          }
 
           if (update._ == 'updateNewChannelMessage') {
             var chat = AppChatsManager.getChat(-peerID)
@@ -2960,24 +2983,12 @@ angular.module('myApp.services')
             }
           }
 
-          var foundDialog = getDialogByPeerID(peerID)
-          var dialog
           var inboxUnread = !message.pFlags.out && message.pFlags.unread
-
-          if (foundDialog.length) {
-            dialog = foundDialog[0]
+          var dialog = foundDialog[0]
           dialog.top_message = message.mid
           if (inboxUnread) {
             dialog.unread_count++
           }
-          } else {
-            SearchIndexManager.indexObject(peerID, AppPeersManager.getPeerSearchText(peerID), dialogsIndex)
-            dialog = {
-              peerID: peerID,
-              unread_count: inboxUnread ? 1 : 0,
-              top_message: message.mid
-            }
-          }
           dialog.index = generateDialogIndex(message.date)
 
           newDialogsToHandle[peerID] = dialog
@@ -3011,10 +3022,6 @@ angular.module('myApp.services')
               notificationsHandlePromise = $timeout(handleNotifications, 1000)
             }
           }
-
-          if (!AppPeersManager.isChannel(peerID)) {
-            incrementMaxSeenID(message.id)
-          }
           break
 
         case 'updateEditMessage':
@@ -3325,8 +3332,9 @@ angular.module('myApp.services')
         var hasUpdated = false
         angular.forEach(dialogsResult.dialogs, function (dialog) {
           if (dialog.top_message) {
+            var wasBefore = getDialogByPeerID(dialog.peerID).length > 0
             saveConversation(dialog)
-            if (getDialogByPeerID(dialog.peerID).length) {
+            if (wasBefore) {
               $rootScope.$broadcast('dialog_top', dialog)
             } else {
               updatedDialogs[dialog.peerID] = dialog

app/partials/desktop/chat_modal.html

@@ -70,8 +70,9 @@
       <div class="md_modal_iconed_section_wrap  md_modal_iconed_section_link">
         <i class="md_modal_section_icon md_modal_section_icon_more"></i>
 
-        <div class="md_modal_section_link_wrap">
-          <a class="md_modal_section_link" ng-click="flushHistory(true)" my-i18n="group_modal_menu_clear_history"></a>
+        <div class="md_modal_section_link_wrap" ng-switch="chatFull.chat.pFlags.left || chatFull.chat.pFlags.kicked || chatFull.chat._ == 'chatForbidden'">
+          <a ng-switch-when="true" class="md_modal_section_link" ng-click="flushHistory(false)" my-i18n="group_modal_menu_delete_group"></a>
+          <a ng-switch-default class="md_modal_section_link" ng-click="flushHistory(true)" my-i18n="group_modal_menu_clear_history"></a>
         </div>
 
       </div>