<?php

/**

 * Class SlideshowPluginShortcode provides the shortcode function, which is called

 * on use of shortcode anywhere in the posts and pages. Also provides the shortcode

 * inserter, so that it's made easier for non-programmers to insert the shortcode

 * into a post or page.

 *

 * @since 1.2.0

 * @author: Stefan Boonstra

 * @version: 25-09-12

 */

class SlideshowPluginShortcode {

	/** Variables */

	public static $shortCode = 'slideshow_deploy';

	public static $bookmark = '!slideshow_deploy!';

	private static $postIds = array();

	/**

	 * Initializes the shortcode, registering it and hooking the shortcode

	 * inserter media buttons.

	 *

	 * @since 2.1.16

	 */

	static function init(){

		// Register shortcode

		add_shortcode(self::$shortCode, array(__CLASS__, 'slideshowDeploy'));

		// Admin

		if(is_admin()){

			// Add shortcode inserter HTML

			add_action('media_buttons',  array(__CLASS__, 'shortcodeInserter'), 11);

			// Enqueue shortcode inserter script

			add_action('admin_enqueue_scripts', array(__CLASS__, 'shortcodeInserterScript'));

		}

	}

	/**

	 * Function slideshowDeploy adds a bookmark to where ever a shortcode

	 * is found and adds the postId to an array, it then is loaded after

	 * Wordpress has done its HTML checks.

	 *

	 * @since 1.2.0

	 * @param mixed $atts

	 * @return String $output

	 */

	static function slideshowDeploy($atts){

		$postId = '';

		if(isset($atts['id']))

			$postId = $atts['id'];

		$output = '';

		$settings = SlideshowPluginPostType::getSimpleSettings($postId, null, false);

		if($settings['setting_avoidFilter'] == 'true'){

			// Filter content after all Wordpress HTML parsers are done, then replace bookmarks with raw HTML

			add_filter('the_content', array(__CLASS__, 'insertSlideshow'), 999);

			add_filter('the_excerpt', array(__CLASS__, 'insertSlideshow'), 999);

			// Save post id

			self::$postIds[] = $postId;

			// Set output

			$output = self::$bookmark;

		}else{

			// Just output the slideshow, without filtering

			$output = SlideshowPlugin::prepare($postId);

		}

		// Return output

		return $output;

	}

	/**

	 * Function insertSlideshow uses the prepare method of class SlideshowPlugin

	 * to insert the code for the slideshow on the location a bookmark was found.

	 *

	 * @since 2.1.8

	 * @param String $content

	 * @return String $content

	 */

	static function insertSlideshow($content){

		// Loop through post ids

		if(is_array(self::$postIds) && count(self::$postIds) > 0)

			foreach(self::$postIds as $postId){

				$updatedContent = preg_replace("/" . self::$bookmark . "/", SlideshowPlugin::prepare($postId), $content, 1);

				if(is_string($updatedContent))

					$content = $updatedContent;

			}

		// Reset postIds, so a shortcode in a next post can be used

		self::$postIds = array();

		return $content;

	}

	/**

	 * Hooked on the admin's 'media_buttons' hook, outputs the shortcode inserter media button

	 *

	 * @since 2.1.16

	 */

	static function shortcodeInserter(){

		// Get slideshows

		$slideshows = new WP_Query(array(

			'post_type' => SlideshowPluginPostType::$postType,

			'orderby' => 'post_date',

			'order' => 'DESC'

		));

		include(SlideshowPluginMain::getPluginPath() . DIRECTORY_SEPARATOR . 'views' . DIRECTORY_SEPARATOR . __CLASS__ . DIRECTORY_SEPARATOR . 'shortcode-inserter.php');

	}

	/**

	 * Enqueues the shortcode inserter script

	 *

	 * @since 2.1.16

	 */

	static function shortcodeInserterScript(){

		wp_enqueue_script(

			'slideshow-shortcode-inserter',

			SlideshowPluginMain::getPluginUrl() . '/js/' . __CLASS__ . '/shortcode-inserter.js',

			array('jquery')

		);

		wp_localize_script(

			'slideshow-shortcode-inserter',

			'SlideshowShortcodeInserter',

			array(

				'undefinedSlideshowMessage' => __('No slideshow selected.', 'slideshow-plugin'),

				'shortcode' => SlideshowPluginShortcode::$shortCode

			)

		);

	}

}