<?php

namespace Tenweb_Manager {

  class MigrationConfig extends Migration
  {

    /**
     * @throws \Exception
     */
    public function run()
    {
      $config = $this->get_site_info();
      $file_to_save_json = self::get_tmp_dir() . "/" . self::MIGRATION_CONFIG_FILE_NAME;
      $data = json_encode($config);
      if (file_put_contents($file_to_save_json, $data) === false) {
        throw new \Exception("Unable to write config.json");
      }

      return $file_to_save_json;
    }

    /**
     * @return array
     */
    private function get_site_info()
    {
      Helper::store_migration_log('start_get_site_info', 'Starting get_site_info function.');
      global $wp_version;

      // set config
      $config = array();

      // set home and site url
      $config["site_url"] = site_url();
      $config["home_url"] = home_url();

      // set wordpress version and content dir
      $config["wp_version"] = $wp_version;
      $config["wp_content_dir"] = WP_CONTENT_DIR;
      $config["wp_uploads_dir"] =  str_replace(ABSPATH, '', Migration::get_uploads_dir());

      // set mysql version
      $sql_version = $this->wpdb->get_var("SELECT VERSION() AS version");
      $config["sql_version"] = $sql_version;
      $config["db_prefix"] = $this->wpdb->prefix;

      // set php version
      $config["php_version"] = PHP_VERSION;

      // set plugins, themes data
      $config["plugins"] = $this->get_plugins();
      $config["themes"] = $this->get_themes();

      // set php config
      $config["php_extensions"] = get_loaded_extensions();
      $config["php_memory_limit"] = ini_get('memory_limit');
      $config["php_disable_functions"] = ini_get('disable_functions');
      $config["php_max_execution_time"] = ini_get('max_execution_time');

      //set db file path
      $config["db_file_path"] = self::MIGRATION_DB_FILE_NAME;

      Helper::store_migration_log('end_get_site_info', 'End get_site_info function.');

      return $config;
    }

    /**
     * @return array
     */
    private function get_plugins()
    {
      $installed_plugins = get_plugins();
      $installed_plugins = array_map(function ($value) {
        $data = array(
          "Name"       => $value["Name"],
          "PluginURI"  => $value["PluginURI"],
          "Version"    => $value["Version"],
          "AuthorName" => $value["AuthorName"],
        );

        return $data;
      }, $installed_plugins);

      return $installed_plugins;
    }

    /**
     * @return array
     */
    private function get_themes()
    {
      $installed_themes = array();
      $themes = wp_get_themes();
      foreach ($themes as $slug => $theme) {
        $installed_themes[$slug] = array(
          "Name"       => $theme->Name,
          "ThemeURI"   => $theme->ThemeURI,
          "Version"    => $theme->Version,
          "AuthorName" => $theme->AuthorName,
        );
      }

      return $installed_themes;
    }


  }
}