From d44fd5d76ac2d1ed348f011f3bb06e75c44da000 Mon Sep 17 00:00:00 2001
From: Pedro Lopez <pedroslopez@me.com>
Date: Mon, 10 Feb 2020 21:51:58 -0400
Subject: [PATCH] new event on connection state changed

---
 src/Client.js         | 9 +++++++++
 src/util/Constants.js | 3 ++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/Client.js b/src/Client.js
index ec30cb0..c1283bd 100644
--- a/src/Client.js
+++ b/src/Client.js
@@ -27,6 +27,7 @@ const Location = require('./structures/Location');
  * @fires Client#message_revoke_me
  * @fires Client#message_revoke_everyone
  * @fires Client#disconnected
+ * @fires Client#change_state
  */
 class Client extends EventEmitter {
     constructor(options = {}) {
@@ -201,6 +202,14 @@ class Client extends EventEmitter {
         });
 
         await page.exposeFunction('onAppStateChangedEvent', (_AppState, state) => {
+
+            /**
+             * Emitted when the connection state changes
+             * @event Client#change_state
+             * @param {WAState} state the new connection state
+             */
+            this.emit(Events.STATE_CHANGED, state);
+
             const ACCEPTED_STATES = [WAState.CONNECTED, WAState.OPENING, WAState.PAIRING, WAState.TIMEOUT];
             if (!ACCEPTED_STATES.includes(state)) {
                 /**
diff --git a/src/util/Constants.js b/src/util/Constants.js
index 97725e2..55c30ae 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -36,7 +36,8 @@ exports.Events = {
     MESSAGE_REVOKED_EVERYONE: 'message_revoke_everyone',
     MESSAGE_REVOKED_ME: 'message_revoke_me',
     QR_RECEIVED: 'qr',
-    DISCONNECTED: 'disconnected'
+    DISCONNECTED: 'disconnected',
+    STATE_CHANGED: 'change_state'
 };
 
 /**