Endpoint / method to post a reply to a message

cjdinger - 

Here is the basic script which you use to call an endpoint. You will need to change the button-id and EndpointURL. 

<@liaAddScript>
;(function($) {

    $(document).ready(function(){
      $("button-id").click(function(){
        $.post("EndpointURL", {'thread-id':"${page.context.thread.topicMessage.uniqueId}", function(status,data){
            location.reload();
        }})
      })
    })

})(LITHIUM.jQuery);
</@liaAddScript>

jQuery helpful links: 

https://www.w3schools.com/jquery/ajax_post.asp

https://www.w3schools.com/jquery/event_click.asp

On the Endpoint side. 

<#assign messageID = http.request.parameters.name.get("thread-id","")>


<#if messageID != ''>
	<#assign templateMessage = "This is boilerplate reply" />
	<#attempt>
		<#assign restapi = restadmin("/messages/id/${messageID}/reply?message.body=${templateMessage?url}") />
	<#recover>
		error in all
	</#attempt>
</#if>

Endpoints helpful links: 

https://community.lithium.com/t5/Components-endpoints-and-the/About-endpoints/ta-p/108971

https://community.lithium.com/t5/Developer-Knowledge-Base/Working-with-Endpoints/ta-p/60240

This is the just very basic example how you can achieve this. You may add validations to jquery and endpoint.