<?php

if(!defined('ABSPATH')) { die('You are not allowed to call this page directly.'); }

/**
 * WordPress class extended for on-the-fly add-on installations.
 */
class PrliAddonInstallSkin extends WP_Upgrader_Skin {
  /**
   * Set the upgrader object and store it as a property in the parent class.
   *
   * @param object $upgrader The upgrader object (passed by reference).
   */
  public function set_upgrader(&$upgrader) {
    if (is_object($upgrader)) {
      $this->upgrader =& $upgrader;
    }
  }

  /**
   * Empty out the header of its HTML content and only check to see if it has
   * been performed or not.
   */
  public function header() {}

  /**
   * Empty out the footer of its HTML contents.
   */
  public function footer() {}

  /**
   * Instead of outputting HTML for errors, json_encode the errors and send them
   * back to the Ajax script for processing.
   *
   * @param array $errors Array of errors with the install process.
   */
  public function error($errors) {
    if(!empty($errors)){
      wp_send_json_error($errors);
   }
  }

  /**
   * Empty out the feedback method to prevent outputting HTML strings as the install
   * is progressing.
   *
   * @param string $string  The feedback string.
   * @param mixed  ...$args Optional text replacements.
   */
  public function feedback($string, ...$args) {}

  /**
   * Empty out JavaScript output that calls function to decrement the update counts.
   *
   * @param string $type Type of update count to decrement.
   */
  public function decrement_update_count($type) {}
}