完成离线消息发送和上线获取离线消息

Hotfix/Chat/Handler/C2Chat_SendMessageRequestHandler.cs

@@ -11,18 +11,35 @@ public sealed class
     protected override async FTask Run(ChatUnit chatUnit, C2Chat_SendMessageRequest request,
         Caht2C_SendMessageResponse response, Action reply)
     {
+        if (request.Target < 1)
+        {
+            response.ErrorCode = ErrorCode.ErrArgs;
+            return;
+        }
+
         if (request.Type == 0) //频道聊天
         {
-            
+            ChatSceneHelper.BroadcastChannel(chatUnit.Scene, request.Target, new ChatMessageInfo()
+            {
+                Content = request.Message,
+            });
         }
         else if (request.Type == 1) //私聊
         {
-            
+            //发送私聊
+            ChatSceneHelper.PrivateMessage(chatUnit.Scene, chatUnit.Id, request.Target, new ChatMessageInfo()
+            {
+                Content = request.Message,
+            });
         }
-        ChatSceneHelper.Broadcast(chatUnit.Scene, new ChatMessageInfo()
+        else if (request.Type == 3) //广播聊天
         {
-            Content = request.Message,
-        });
+            ChatSceneHelper.BroadcastAll(chatUnit.Scene, new ChatMessageInfo()
+            {
+                Content = request.Message,
+            });
+        }
+
         await FTask.CompletedTask;
     }
 }