lastMessage in chat (#1606)

* lastMessage in chat

* lastMessage info

* Update src/util/Injected.js

Co-authored-by: Rajeh Taher <rajeh@reforward.dev>

* fix  serialize msg

* markup

---------

Co-authored-by: tofers <tofers90>
Co-authored-by: Rajeh Taher <rajeh@reforward.dev>

index.d.ts

@@ -1038,6 +1038,8 @@ declare namespace WAWebJS {
         timestamp: number,
         /** Amount of messages unread */
         unreadCount: number,
+        /** Last message fo chat */
+        lastMessage: Message,
 
         /** Archives this chat */
         archive: () => Promise<void>,

src/structures/Chat.js

@@ -75,6 +75,12 @@ class Chat extends Base {
          */
         this.muteExpiration = data.muteExpiration;
 
+        /**
+         * Last message fo chat
+         * @type {Message}
+         */
+        this.lastMessage = data.lastMessage ? new Message(super.client, data.lastMessage) : undefined;
+        
         return super._patch(data);
     }
 

src/util/Injected.js

@@ -427,7 +427,15 @@ exports.LoadUtils = () => {
             await window.Store.GroupMetadata.update(chatWid);
             res.groupMetadata = chat.groupMetadata.serialize();
         }
-
+        
+        res.lastMessage = null;
+        if (res.msgs && res.msgs.length) {
+            const lastMessage = window.Store.Msg.get(chat.lastReceivedKey._serialized);
+            if (lastMessage) {
+                res.lastMessage = window.WWebJS.getMessageModel(lastMessage);
+            }
+        }
+        
         delete res.msgs;
         delete res.msgUnsyncedButtonReplyMsgs;
         delete res.unsyncedButtonReplies;