<?php
/**
 * AnsPress.
 *
 * @package   AnsPress
 * @author    Rahul Aryan <admin@rahularyan.com>
 * @license   GPL-2.0+
 * @link      http://rahularyan.com
 * @copyright 2014 Rahul Aryan
 */


class anspress {

	/**
	 * Unique identifier
	 * The variable name is used as the text domain when internationalizing strings
	 * of text. Its value should match the Text Domain file header in the main
	 * plugin file.
	 *
	 */
	protected $plugin_slug = 'anspress';

	/**
	 * Instance of this class.
	 */
	protected static $instance = null;

	/**
	 * Initialize the plugin by setting localization and loading public scripts
	 * and styles.
	 */
	private function __construct() {

		// Load plugin text domain
		add_action( 'init', array( $this, 'load_plugin_textdomain' ) );

		// Activate plugin when new blog is added
		add_action( 'wpmu_new_blog', array( $this, 'activate_new_site' ) );

		add_filter('query_vars', array($this, 'query_var'));
		
		add_action('post_type_link', array( $this, 'answer_link'),10,2);
		add_action('generate_rewrite_rules', array( $this, 'rewrites'));
		
	}

	/**
	 * Return the plugin slug.
	 *
	 * @since    1.0.0
	 *
	 * @return    Plugin slug variable.
	 */
	public function get_plugin_slug() {
		return $this->plugin_slug;
	}

	/**
	 * Return an instance of this class.
	 *
	 * @since     1.0.0
	 *
	 * @return    object    A single instance of this class.
	 */
	public static function get_instance() {

		// If the single instance hasn't been set, set it now.
		if ( null == self::$instance ) {
			self::$instance = new self;
		}

		return self::$instance;
	}


	/**
	 * Fired when the plugin is deactivated.
	 *
	 * @param    boolean    $network_wide    True if WPMU superadmin uses
	 *                                       "Network Deactivate" action, false if
	 *                                       WPMU is disabled or plugin is
	 *                                       deactivated on an individual blog.
	 */
	public static function deactivate( $network_wide ) {

		if ( function_exists( 'is_multisite' ) && is_multisite() ) {

			if ( $network_wide ) {

				// Get all blog ids
				$blog_ids = self::get_blog_ids();

				foreach ( $blog_ids as $blog_id ) {

					switch_to_blog( $blog_id );
					self::single_deactivate();

				}

				restore_current_blog();

			} else {
				self::single_deactivate();
			}

		} else {
			self::single_deactivate();
		}
		delete_option('ap_flush'); 
		flush_rewrite_rules();
	}

	/**
	 * Fired when a new site is activated with a WPMU environment.
	 *
	 * @param    int    $blog_id    ID of the new blog.
	 */
	public function activate_new_site( $blog_id ) {

		if ( 1 !== did_action( 'wpmu_new_blog' ) ) {
			return;
		}

		switch_to_blog( $blog_id );
		self::single_activate();
		restore_current_blog();

	}

	
	/**
	 * Fired for each blog when the plugin is deactivated.
	 *
	 * @since    1.0.0
	 */
	private static function single_deactivate() {
		// @TODO: Define deactivation functionality here
	}

	/**
	 * Load the plugin text domain for translation.
	 *
	 * @since    1.0.0
	 */
	public function load_plugin_textdomain() {

		$domain = $this->plugin_slug;
		$locale = apply_filters( 'plugin_locale', get_locale(), $domain );

		load_textdomain( $domain, trailingslashit( WP_LANG_DIR ) . $domain . '/' . $domain . '-' . $locale . '.mo' );
		
		add_rewrite_tag('%question_id%','([^&]+)');
	}
	
	//add author_more to query vars
	public function query_var( $query_vars) {

		$query_vars[] = 'edit_q';
		$query_vars[] = 'ap_nonce';
		$query_vars[] = 'edit_a';
		$query_vars[] = 'question_id';
		$query_vars[] = 'question';
		$query_vars[] = 'answer_id';
		$query_vars[] = 'answer';
		$query_vars[] = 'ask';
		$query_vars[] = 'ap_page';
		$query_vars[] = 'qcat_id';
		$query_vars[] = 'qcat';
		$query_vars[] = 'qtag_id';
		$query_vars[] = 'qtag';
		
		return $query_vars;
	}
	
	/* Answer link */	
	public function answer_link($link,$post) {
		$post_type = 'answer';
		if ($post->post_type==$post_type) {
			$post_data = get_post($post->post_parent);
			$link = get_post_type_archive_link('question').$post_data->post_name ."#answer_{$post->ID}";
		}
		return $link;
	}

	 
	public function rewrites() {  
		global $wp_rewrite;  
		
		unset($wp_rewrite->extra_permastructs['question']); 
        unset($wp_rewrite->extra_permastructs['answer']); 
		
		$base_page_id = ap_opt('base_page');
		$base_page_slug = ap_opt('base_page_slug');

		
		$slug = ap_base_page_slug();
		$new_rules = array(  	
			
			$slug. "question/([^/]+)/?" => "index.php?page_id=".$base_page_id."&question_id=".$wp_rewrite->preg_index(1),  
			$slug. "page/?([0-9]{1,})/?$" => "index.php?page_id=".$base_page_id."&paged=".$wp_rewrite->preg_index(1),  
		
			$slug. "([^/]+)/page/?([0-9]{1,})/?$" => "index.php?page_id=".$base_page_id."&ap_page=".$wp_rewrite->preg_index(1)."&paged=".$wp_rewrite->preg_index(2),  
			
			$slug. "([^/]+)/?" => "index.php?page_id=".$base_page_id."&ap_page=".$wp_rewrite->preg_index(1),

		);  
		return $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;  
	}  
	

}