<?php

/**

 * Upgrader API: WP_Upgrader_Skin class

 *

 * @package WordPress

 * @subpackage Upgrader

 * @since 4.6.0

 */

/**

 * Generic Skin for the WordPress Upgrader classes. This skin is designed to be extended for specific purposes.

 *

 * @since 2.8.0

 * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.

 */

class WP_Upgrader_Skin {

	public $upgrader;

	public $done_header = false;

	public $done_footer = false;

	/**

	 * Holds the result of an upgrade.

	 *

	 * @since 2.8.0

	 * @var string|bool|WP_Error

	 */

	public $result = false;

	public $options = array();

	/**

	 *

	 * @param array $args

	 */

	public function __construct($args = array()) {

		$defaults = array( 'url' => '', 'nonce' => '', 'title' => '', 'context' => false );

		$this->options = wp_parse_args($args, $defaults);

	}

	/**

	 *

	 * @param WP_Upgrader $upgrader

	 */

	public function set_upgrader(&$upgrader) {

		if ( is_object($upgrader) )

			$this->upgrader =& $upgrader;

		$this->add_strings();

	}

	/**

	 */

	public function add_strings() {

	}

	/**

	 * Sets the result of an upgrade.

	 *

	 * @since 2.8.0

	 *

	 * @param string|bool|WP_Error $result The result of an upgrade.

	 */

	public function set_result( $result ) {

		$this->result = $result;

	}

	/**

	 * Displays a form to the user to request for their FTP/SSH details in order

	 * to connect to the filesystem.

	 *

	 * @since 2.8.0

	 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.

	 *

	 * @see request_filesystem_credentials()

	 *

	 * @param bool   $error                        Optional. Whether the current request has failed to connect.

	 *                                             Default false.

	 * @param string $context                      Optional. Full path to the directory that is tested

	 *                                             for being writable. Default empty.

	 * @param bool   $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.

	 * @return bool False on failure, true on success.

	 */

	public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {

		$url = $this->options['url'];

		if ( ! $context ) {

			$context = $this->options['context'];

		}

		if ( !empty($this->options['nonce']) ) {

			$url = wp_nonce_url($url, $this->options['nonce']);

		}

		$extra_fields = array();

		return request_filesystem_credentials( $url, '', $error, $context, $extra_fields, $allow_relaxed_file_ownership );

	}

	/**

	 */

	public function header() {

		if ( $this->done_header ) {

			return;

		}

		$this->done_header = true;

		echo '<div class="wrap">';

		echo '<h1>' . $this->options['title'] . '</h1>';

	}

	/**

	 */

	public function footer() {

		if ( $this->done_footer ) {

			return;

		}

		$this->done_footer = true;

		echo '</div>';

	}

	/**

	 *

	 * @param string|WP_Error $errors

	 */

	public function error($errors) {

		if ( ! $this->done_header )

			$this->header();

		if ( is_string($errors) ) {

			$this->feedback($errors);

		} elseif ( is_wp_error($errors) && $errors->get_error_code() ) {

			foreach ( $errors->get_error_messages() as $message ) {

				if ( $errors->get_error_data() && is_string( $errors->get_error_data() ) )

					$this->feedback($message . ' ' . esc_html( strip_tags( $errors->get_error_data() ) ) );

				else

					$this->feedback($message);

			}

		}

	}

	/**

	 *

	 * @param string $string

	 */

	public function feedback($string) {

		if ( isset( $this->upgrader->strings[$string] ) )

			$string = $this->upgrader->strings[$string];

		if ( strpos($string, '%') !== false ) {

			$args = func_get_args();

			$args = array_splice($args, 1);

			if ( $args ) {

				$args = array_map( 'strip_tags', $args );

				$args = array_map( 'esc_html', $args );

				$string = vsprintf($string, $args);

			}

		}

		if ( empty($string) )

			return;

		show_message($string);

	}

	/**

	 */

	public function before() {}

	/**

	 */

	public function after() {}

	/**

	 * Output JavaScript that calls function to decrement the update counts.

	 *

	 * @since 3.9.0

	 *

	 * @param string $type Type of update count to decrement. Likely values include 'plugin',

	 *                     'theme', 'translation', etc.

	 */

	protected function decrement_update_count( $type ) {

		if ( ! $this->result || is_wp_error( $this->result ) || 'up_to_date' === $this->result ) {

			return;

		}

		if ( defined( 'IFRAME_REQUEST' ) ) {

			echo '<script type="text/javascript">

					if ( window.postMessage && JSON ) {

						window.parent.postMessage( JSON.stringify( { action: "decrementUpdateCount", upgradeType: "' . $type . '" } ), window.location.protocol + "//" + window.location.hostname );

					}

				</script>';

		} else {

			echo '<script type="text/javascript">

					(function( wp ) {

						if ( wp && wp.updates.decrementCount ) {

							wp.updates.decrementCount( "' . $type . '" );

						}

					})( window.wp );

				</script>';

		}

	}

	/**

	 */

	public function bulk_header() {}

	/**

	 */

	public function bulk_footer() {}

}