<?php
/*
Description:  Orange-Cheers Theme Comment Plugin.
Version:      1.0
Author:       rikakomoe
Author URI:   https://github.com/cool2645/orange-cheers
License:      MIT
License URI:  https://opensource.org/licenses/MIT
*/

/*
 * What is this plugin for?
 *
 * In WordPress one comment can have a "parent", which indicates which comment does this comment replies.
 * When you reply to comments, they displays like this:
 *
 * Alice: Original Comment.
 *       Bob: I'm the comment that replies to Alice.
 *              Charlie: I'm the comment that replies to Bob.
 *
 * This looks awful. Instead, Orange Cheers displays comments like this by adding a "reply_id" meta against
 * directly replying to them.
 * 
 * Alice: Original Comment.
 *       Bob: @Alice I'm the comment that replies to Alice.
 *       Charlie: @Bob I'm the comment that replies to Bob.
 *
 */

add_filter('rest_allow_anonymous_comments', '__return_true');

register_rest_field('comment', 'meta', array(
    'get_callback' => function ($data) {
        return get_comment_meta($data['id'], 'reply_id', true);
    },
    'update_callback' => function ($value, $data) {
        if (isset($value['reply_id'])) {
            $hasmeta = get_comment_meta($data->comment_ID, 'reply_id', false);
            if ($hasmeta) {
                update_comment_meta($data->comment_ID, 'reply_id', $value['reply_id']);
            } else {
                add_comment_meta($data->comment_ID, 'reply_id', $value['reply_id'], true);
            }
        }
        return true;
    },));