update

layout/includes/third-party/chat/messenger.pug

@@ -4,39 +4,41 @@
 #fb-customer-chat.fb-customerchat(page_id=pageID attribution='biz_inbox')
 
 script.
-  document.getElementById('fb-root') ? '' : document.body.insertAdjacentHTML('afterend', '<div id="fb-root"></div>')
+  (() => {
+    document.getElementById('fb-root') ? '' : document.body.insertAdjacentHTML('afterend', '<div id="fb-root"></div>')
 
-  window.fbAsyncInit = function() {
-    FB.init({
-      xfbml: true,
-      version: 'v16.0'
-    });
-  };
-
-  (function(d, s, id) {
-    var js, fjs = d.getElementsByTagName(s)[0];
-    if (d.getElementById(id)) return;
-    js = d.createElement(s); js.id = id;
-    js.src = 'https://connect.facebook.net/!{lang}/sdk/xfbml.customerchat.js';
-    fjs.parentNode.insertBefore(js, fjs);
-  }(document, 'script', 'facebook-jssdk'));
-
-  if (!{theme.chat_btn}) {
-    var chatBtnFn = () => {
-      var chatBtn = document.getElementById("chat_btn")
-      chatBtn.addEventListener("click", function(){
-        FB.CustomerChat.show();
+    window.fbAsyncInit = function() {
+      FB.init({
+        xfbml: true,
+        version: 'v16.0'
       });
-    }
-    chatBtnFn()
-  } else {
-    if (!{theme.chat_hide_show}) {
-      function chatBtnHide () {
-        FB.CustomerChat.hide()
-      }
-      function chatBtnShow () {
-        FB.CustomerChat.show(false)
-      }
-    }
-  }
+    };
+
+    (function(d, s, id) {
+      var js, fjs = d.getElementsByTagName(s)[0];
+      if (d.getElementById(id)) return;
+      js = d.createElement(s); js.id = id;
+      js.src = 'https://connect.facebook.net/!{lang}/sdk/xfbml.customerchat.js';
+      fjs.parentNode.insertBefore(js, fjs);
+    }(document, 'script', 'facebook-jssdk'));
+
+    const isChatBtn = !{theme.chat_btn}
+    const isChatHideShow = !{theme.chat_hide_show}
+
+    if (isChatBtn) {
+      window.chatBtnFn = () => {
+        const isShow = document.querySelector('.fb_customer_chat_bounce_in_v2')
+        isShow ? FB.CustomerChat.hide() : FB.CustomerChat.show()
+      }
+    } else if (isChatHideShow) {
+      window.chatBtn = {
+        hide: () => {
+          FB.CustomerChat.hide()
+        },
+        show: () => {
+          FB.CustomerChat.show(false)
+        }
+      }
+    }
+  })()