<?php
/**
 * class-affiliate-content.php
 * 
 * Copyright (c) 2014 "kento" Karim Rahimpur www.itthinx.com
 * 
 * This code is released under the GNU General Public License.
 * See COPYRIGHT.txt and LICENSE.txt.
 * 
 * This code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * This header and all notices must be kept intact.
 * 
 * @author Karim Rahimpur
 * @package affiliate
 * @since 1.0.0
 */

if ( !defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Content transformer.
 */
class Affiliate_Content {

	/**
	 * Filter priority for the_content hook.
	 * @var int
	 */
	const THE_CONTENT_FILTER_PRIORITY = 99999;

	/**
	 * Setup.
	 */
	public static function init() {
		// @todo excerpt?
		add_filter( 'the_content', array(__CLASS__, 'the_content' ), self::THE_CONTENT_FILTER_PRIORITY );
	}

	/**
	 * Content filter, hooked on the_content, invokes the transformer.
	 * 
	 * @param string $content
	 * @return string filtered content
	 */
	public static function the_content( $content ) {
		if ( $post = get_post() ) {
			$content = apply_filters( 'affiliate_post_the_content', self::transform( $content, $post ), $post );
		}
		return $content;
	}

	/**
	 * Content transformer.
	 * 
	 * @param string $content
	 * @param WP_Post $post
	 * @return string transformed content
	 */
	public static function transform( &$content, &$post ) {
		require_once AFFILIATE_CORE_LIB . '/class-affiliate-content-builder.php';
		$builder = new Affiliate_Content_Builder( $content );
		$content = $builder->get_content();
		return $content;
	}
}
add_action( 'init', array( 'Affiliate_Content', 'init' ) );