Fix sync channel not ready on login

README.md

@@ -23,6 +23,4 @@ Target notification and nearby hostiles list:
 ![Nearby list](images/listnb.png)
 
 ### Note
-This was developed against the BfA API, bearly tested in Classic stress test. It seems to work fine on the surface, but especially the sync feature has a high chance of being a broken mess, or maybe it actually works, no testing about that was done yet :D
-
 *Blizzard removed spell IDs from combat log as of the pre-launch event, so level prediction can't use ranks now, minimal possible level is shown.

events.lua

@@ -58,8 +58,9 @@ function handlers.PLAYER_LOGIN()
 			_addon:PrintDebug("Can already join channel");
 			_addon:JoinSyncChannel();
 		else
-			_addon:PrintDebug("Can't join now, registering event");
-			frame:RegisterEvent("CHANNEL_UI_UPDATE");
+            _addon:PrintDebug("Can't join now, registering event");
+            frame:RegisterEvent("CHAT_MSG_CHANNEL_NOTICE");
+            frame:RegisterEvent("CHANNEL_UI_UPDATE");  
 		end
 	end
 
@@ -88,8 +89,21 @@ end
 
 -- CHANNEL_UI_UPDATE
 function handlers.CHANNEL_UI_UPDATE()
+    _addon:PrintDebug("CHANNEL_UI_UPDATE");
 	frame:UnregisterEvent("CHANNEL_UI_UPDATE");
-	_addon:JoinSyncChannel();
+	_addon:JoinSyncChannel(true);
+end
+
+-- CHAT_MSG_CHANNEL_NOTICE
+function handlers.CHAT_MSG_CHANNEL_NOTICE(joinLeave, a2, a3, channelName, a5, a6, channelType, channelNumber)
+    _addon:PrintDebug("CHAT_MSG_CHANNEL_NOTICE");
+    _addon:PrintDebug(joinLeave .. " " .. channelName);
+    if _addon.syncChannelId == channelNumber then
+        _addon:PrintDebug("Sync channel ready");
+        _addon:SyncRequestFullList("CHANNEL");
+	    _addon:SyncSendFullList("CHANNEL");
+        frame:UnregisterEvent("CHAT_MSG_CHANNEL_NOTICE");
+    end
 end
 
 -- PLAYER_REGEN_ENABLED

main.lua

@@ -7,7 +7,7 @@ local lastTrigger = 0;
 local lastTriggerName = {};
 
 --- Join channel for data sync
-function _addon:JoinSyncChannel()
+function _addon:JoinSyncChannel(dontSend)
 	if Hitlist_settings.channelName == nil or Hitlist_settings.channelName:len() == 0 then
 		self:PrintError(L["ERROR_SYNC_CHANNEL_NAME"]);
 		return;
@@ -28,8 +28,11 @@ function _addon:JoinSyncChannel()
 	self.syncChannelName = name;
 
 	self:PrintSuccess(L["SYNC_CHANNEL_JOINED"]);
-	_addon:SyncRequestFullList("CHANNEL");
-	_addon:SyncSendFullList("CHANNEL");
+
+	if not dontSend then
+		_addon:SyncRequestFullList("CHANNEL");
+		_addon:SyncSendFullList("CHANNEL");
+	end
 end
 
 --- Add new target to the list

sync.lua

@@ -176,6 +176,9 @@ handlers[OP_MULTIPART_UPDATE] = function(msg, author)
 			recvBuffer[author].partCount = maxpart;
 		end
 	else
+		if recvBuffer[author] == nil then
+			return;
+		end
 		recvBuffer[author].msg = recvBuffer[author].msg .. msg:sub(5);
 		recvBuffer[author].recievedCount = recvBuffer[author].recievedCount + 1;
 	end