add searchMessages method (#586)

* add searchMessages method

* fix typing

* fix typing

* remove unused statement

Co-authored-by: Pedro S. Lopez <pslamoros@hotmail.com>

src/Client.js

@@ -510,6 +510,24 @@ class Client extends EventEmitter {
         return new Message(this, newMessage);
     }
 
+    /**
+     * Searches for messages
+     * @param {string} query
+     * @param {Object} [options]
+     * @param {number} [options.page]
+     * @param {number} [options.limit]
+     * @param {string} [options.chatId]
+     * @returns {Promise<Message[]>}
+     */
+    async searchMessages(query, options = {}) {
+        const messages = await this.pupPage.evaluate(async (query, page, count, remote) => {
+            const { messages } = await window.Store.Msg.search(query, page, count, remote);
+            return messages.map(msg => window.WWebJS.getMessageModel(msg));
+        }, query, options.page, options.limit, options.chatId);
+
+        return messages.map(msg => new Message(this, msg));
+    }
+
     /**
      * Get all current chat instances
      * @returns {Promise<Array<Chat>>}