Loco Translate Webhook example

loco-translate-webhook.php

<?php
/*
Plugin Name: Loco Webhook
Description: Monitors changes to PO files during save operations
Author: Tim Whitlock
*/

class LocoWebhook {

    private $path;
    private $hash;
    
    public function __construct( $path ){
        $this->path = $path;
        if( file_exists($path) ){
            $this->hash = md5_file($path);
        }
    }
    
    public function ping(){
        if( file_exists($this->path) ){
            $hash = md5_file($this->path);
            if( $hash !== $this->hash ){
                $this->hash = $hash;
                // --------------------------------------
                FILE HAS CHANGED. PING YOUR WEB HOOK HERE
                // --------------------------------------
            }
        }
    }

    public static function init(){
        if( 'save' === $_POST['route'] ) {
            $path = WP_CONTENT_DIR.'/'.$_POST['path'];
            $inst = new LocoWebhook( $path );
            add_action('loco_admin_shutdown',[$inst,'ping']);
        }
    }

}

add_action('wp_ajax_loco_json', ['LocoWebhook','init'] );