<?php
/**
 * Audit Charitable Donations Upgrade class.
 *
 * The responsibility of this class is to manage migrations between versions of Audit Charitable Donations.
 *
 * @package     Audit Charitable Donations
 * @subpackage  Audit Charitable Donations/Upgrade
 * @copyright   Copyright (c) 2018, Himani Lotia
 * @license     http://opensource.org/licenses/gpl-1.0.0.php GNU Public License
 * @since       1.0.0
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) { exit; }

if ( ! class_exists( 'Audti_Charitable_Donations_Upgrade' ) ) :

	/**
	 * Audit_Charitable_Donations_Upgrade
	 *
	 * @since   1.0.0
	 */
	class Audit_Charitable_Donations_Upgrade extends Charitable_Upgrade {

		/**
		 * Single static class instance.
		 *
		 * @since   1.0.0
		 *
		 * @var     Audit_Charitable_Donations_Upgrade
		 */
		private static $instance = null;

		/**
		 * Array of methods to perform when upgrading to specific versions.
		 *
		 * @since   1.0.0
		 *
		 * @var 	array
		 */
		protected $upgrade_actions;

		/**
		 * Option key for upgrade log.
		 *
		 * @since   1.0.0
		 *
		 * @var 	string
		 */
		protected $upgrade_log_key = 'audit_charitable_donations_upgrade_log';

		/**
		 * Option key for plugin version.
		 *
		 * @since   1.0.0
		 *
		 * @var 	string
		 */
		protected $version_key = 'audit_charitable_donations_version';

		/**
		 * Create and return the class object.
		 *
		 * @since   1.0.0
		 */
		public static function get_instance() {
			if ( is_null( self::$instance ) ) {
				self::$instance = new Audit_Charitable_Donations_Upgrade();
			}

			return self::$instance;
		}

		/**
		 * Manages the upgrade process.
		 *
		 * @since   1.0.0
		 *
		 * @param 	deprecated $db_version   Deprecated argument. The version recorded in the DB.
		 * @param 	deprecated $edge_version Deprecated argument. The latest version.
		 */
		protected function __construct( $db_version = '', $edge_version = '' ) {

			$this->upgrade_actions = array(
			// 'sample_upgrade_routine' => array(
			// 	'version' => '1.0.0',
			// 	'message' => __( 'This is an example upgrade.', 'charitable-edd' ),
			// 	'prompt' => true, // Set to false if upgrade happens automatically
			// ),
			);

		}
	}

endif;