Ignore being room creator for the room to check if one can post to the channel

app/src/main/java/chat/rocket/android/chatroom/presentation/ChatRoomView.kt

@@ -123,9 +123,9 @@ interface ChatRoomView : LoadingView, MessageView {
     /**
      * This user has joined the chat callback.
      *
-     * @param canPost Whether the user can post a message or not.
+     * @param userCanPost Whether the user can post a message or not.
      */
-    fun onJoined(canPost: Boolean)
+    fun onJoined(userCanPost: Boolean)
 
     fun showReactionsPopup(messageId: String)
 

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomFragment.kt

@@ -289,7 +289,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     override fun onRoomUpdated(userCanPost: Boolean, channelIsBroadcast: Boolean, userCanMod: Boolean) {
         // TODO: We should rely solely on the user being able to post, but we cannot guarantee
         // that the "(channels|groups).roles" endpoint is supported by the server in use.
-        setupMessageComposer(userCanPost || isChatRoomCreator)
+        setupMessageComposer(userCanPost)
         isBroadcastChannel = channelIsBroadcast
         if (isBroadcastChannel && !userCanMod) activity?.invalidateOptionsMenu()
     }
@@ -628,7 +628,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
             input_container.setVisible(true)
             button_join_chat.setVisible(false)
             isSubscribed = true
-            setupMessageComposer(userCanPost || isChatRoomCreator)
+            setupMessageComposer(userCanPost)
         }
     }
 
@@ -660,8 +660,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     }
 
     private fun setupMessageComposer(canPost: Boolean) {
-        val showComposer = if (!canPost) canPost else isChatRoomCreator
-        if (!showComposer && isChatRoomReadOnly) {
+        if (isChatRoomReadOnly && !canPost) {
             text_room_is_read_only.setVisible(true)
             input_container.setVisible(false)
         } else if (!isSubscribed) {

app/src/main/java/chat/rocket/android/helper/UserHelper.kt

@@ -48,7 +48,7 @@ class UserHelper @Inject constructor(
     /**
      * Return the username for the current logged [User].
      */
-    fun username(): String? = user()?.username
+    fun username(): String? = localRepository.get(LocalRepository.CURRENT_USERNAME_KEY, null)
 
     /**
      * Whether current [User] is admin on the current server.