Zendesk Web Widget + Chat - shows the widget when a single department is online

web_widget_chat_dept_status.js

<script id="ze-snippet" src="https://static.zdassets.com/ekr/snippet.js?key=YOUR_WEB_WIDGET_KEY_GOES_HERE"> </script>
<script type="text/javascript">
  var department_name = 'Sales';
  
  zE('webWidget:on', 'chat:connected', function() {
    zE('webWidget', 'updateSettings', {
      webWidget: {
  			chat: {
  				departments: {
  					enabled: [department_name],
  					select: department_name
  				}
  			}
  		}
    });
    var chatDepartment = zE('webWidget:get', 'chat:department', department_name);
    chatDepartment.status === "online" ? zE('webWidget', 'show') : zE('webWidget', 'hide');
  });
  
  zE('webWidget:on', 'chat:departmentStatus', function(chatDepartment) {
  	if(chatDepartment.name == department_name) {
  		chatDepartment.status === "online" ? zE('webWidget', 'show') : zE('webWidget', 'hide');
  	}
  });
</script>