<?php
/**
 * All actions of AnsPress
 *
 * @package   AnsPress
 * @author    Rahul Aryan <admin@rahularyan.com>
 * @license   GPL-2.0+
 * @link      http://wp3.in
 * @copyright 2014 Rahul Aryan
 */

class AnsPress_Actions
{
	/**
	 * Initialize the class
	 * @since 2.0.1
	 */
	public function __construct()
	{
		new AnsPress_Post_Status;
		new AnsPress_Rewrite;
		
		AP_History::get_instance();

		add_action( 'init', array($this, 'init') );
		add_action( 'ap_after_new_question', array($this, 'after_new_question'), 10, 2 );
		add_action( 'ap_after_new_answer', array($this, 'after_new_answer'), 10, 2 );

		add_action( 'ap_after_update_question', array($this, 'ap_after_update_question'), 10, 2 );
		add_action( 'ap_after_update_answer', array($this, 'ap_after_update_answer'), 10, 2 );

		add_action('before_delete_post', array($this, 'before_delete'));	

		add_action('wp_trash_post', array($this, 'trash_post_action'));
		add_action('untrash_post', array($this, 'untrash_ans_on_question_untrash'));

		add_action('comment_post', array($this, 'new_comment_approve'), 10, 2);
		add_action('comment_unapproved_to_approved', array($this, 'comment_approve'));
		add_action('comment_approved_to_unapproved', array($this, 'comment_unapproved'));
		add_action('trashed_comment', array($this, 'comment_trash'));
		add_action('delete_comment ', array($this, 'comment_trash'));
		add_action('publish_comment', array($this, 'publish_comment'));
		add_action('unpublish_comment', array($this, 'unpublish_comment'));
		add_filter('wp_get_nav_menu_items', array($this, 'update_menu_url'));

		add_action( 'wp_loaded', array( $this, 'flush_rules' ) );
	}

	/**
     * Actions to do after after theme setup
     * @return void
     * @since 2.0.0-alpha2
     */
    public function init()
    {
    	ap_register_menu('ANSPRESS_BASE_PAGE_URL', __('Questions', 'ap'), ap_base_page_link());
    	ap_register_menu('ANSPRESS_ASK_PAGE_URL', __('Ask', 'ap'), ap_get_link_to('ask'));
    }

	/**
	 * Things to do after creating a question
	 * @param  int $post_id
	 * @return void
	 * @since 1.0
	 */
	public function after_new_question($post_id)
	{

		$user_id = get_current_user_id();
		update_post_meta($post_id, ANSPRESS_VOTE_META, '0');
		update_post_meta($post_id, ANSPRESS_SUBSCRIBER_META, '0');
		update_post_meta($post_id, ANSPRESS_CLOSE_META, '0');
		update_post_meta($post_id, ANSPRESS_FLAG_META, '0');
		update_post_meta($post_id, ANSPRESS_VIEW_META, '0');
		update_post_meta($post_id, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
		update_post_meta($post_id, ANSPRESS_SELECTED_META, false);
		
		//ap_add_history($user_id, $post_id, 'asked');
		ap_add_parti($post_id, $user_id, 'question');
		
		//update answer count
		update_post_meta($post_id, ANSPRESS_ANS_META, '0');

		do_action('ap_after_inserting_question', $post_id);
		ap_do_event('new_question', $post_id, $user_id);

	}
	
	/**
	 * Things to do after creating an answer
	 * @param  int $post_id
	 * @param  object $post
	 * @return void
	 * @since 2.0.1
	 */
	public function after_new_answer($post_id, $post)
	{
		
		$user_id = get_current_user_id();	
		$question = get_post($post->post_parent);
		// set default value for meta
		update_post_meta($post_id, ANSPRESS_VOTE_META, '0');
		
		// set updated meta for sorting purpose
		update_post_meta($question->ID, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
		update_post_meta($post_id, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
		
		ap_add_parti($question->ID, $user_id, 'answer', $post_id);			
		
		// get existing answer count
		$current_ans = ap_count_published_answers($question->ID);
		
		//update answer count
		update_post_meta($question->ID, ANSPRESS_ANS_META, $current_ans);
		
		update_post_meta($post_id, ANSPRESS_BEST_META, 0);
		
		do_action('ap_after_inserting_answer', $post_id);
	}

	public function ap_after_update_question($post_id){
		// set updated meta for sorting purpose
		update_post_meta($post_id, ANSPRESS_UPDATED_META, current_time( 'mysql' ));

		ap_do_event('edit_question', $post_id, get_current_user_id());
	}

	public function ap_after_update_answer($post_id, $post)
	{
		
		update_post_meta($post_id, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
		update_post_meta($post->post_parent, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
		
		//update answer count
		$current_ans = ap_count_published_answers($post->post_parent);
		update_post_meta($post->post_parent, ANSPRESS_ANS_META, $current_ans);
		ap_do_event('edit_answer', $post_id, get_current_user_id(), $post->post_parent);
	}

	public function before_delete($post_id){
		$post = get_post($post_id);
		if($post->post_type == 'question' || $post->post_type == 'answer' ){
			do_action('ap_before_delete_'.$post->post_type, $post->ID, $post->post_author);
			ap_delete_meta(array('apmeta_actionid' => $post->ID));
		}
	}
	/**
	 * if a question is sent to trash, then move its answers to trash as well
	 * @param  int
	 * @return void
	 * @since 2.0.0
	 */
	public function trash_post_action ($post_id) {
		$post = get_post( $post_id );

		if( $post->post_type == 'question') {
			do_action('delete_question', $post->ID, $post->post_author);
			ap_remove_parti($post->ID, $post->post_author, 'question');
			ap_delete_meta(array('apmeta_type' => 'flag', 'apmeta_actionid' => $post->ID));
			$arg = array(
			  'post_type' => 'answer',
			  'post_status' => 'publish',
			  'post_parent' => $post_id,
			  'showposts' => -1,
			);
			$ans = get_posts($arg);
			if($ans>0){
				foreach( $ans as $p){
					do_action('ap_trash_question', $p->ID);
					ap_remove_parti($p->post_parent, $p->post_author, 'answer');
					ap_delete_meta(array('apmeta_type' => 'flag', 'apmeta_actionid' => $post->ID));
					wp_trash_post($p->ID);
				}
			}
		}

		if( $post->post_type == 'answer') {
			$ans = ap_count_published_answers($post->post_parent);
			do_action('ap_trash_answer', $post->ID);
			ap_remove_parti($post->post_parent, $post->post_author, 'answer');
			ap_delete_meta(array('apmeta_type' => 'flag', 'apmeta_actionid' => $post->ID));
			
			//update answer count
			update_post_meta($post->post_parent, ANSPRESS_ANS_META, $ans-1);
		}
	}

	/**
	 * if questions is restored then restore its answers too.
	 * @param  int
	 * @return void
	 * @since 2.0.0
	 */
	public function untrash_ans_on_question_untrash ($post_id) {
		$post = get_post( $post_id );
		
		if( $post->post_type == 'question') {
			do_action('ap_untrash_question', $post->ID);
			ap_add_parti($post->ID, $post->post_author, 'question');
			
			$arg = array(
			  'post_type' => 'answer',
			  'post_status' => 'trash',
			  'post_parent' => $post_id,
			  'showposts' => -1
			);
			$ans = get_posts($arg);
			if($ans>0){
				foreach( $ans as $p){
					do_action('ap_untrash_answer', $p->ID);
					ap_add_parti($p->ID, $p->post_author, 'answer');
					wp_untrash_post($p->ID);
				}
			}
		}
		
		if( $post->post_type == 'answer') {
			$ans = ap_count_published_answers( $post->post_parent );
			do_action('untrash_answer', $post->ID, $post->post_author);
			ap_add_parti($post->post_parent, $post->post_author, 'answer');
			
			//update answer count
			update_post_meta($post->post_parent, ANSPRESS_ANS_META, $ans+1);
		}
	}

	public function new_comment_approve($comment_id, $approved)
	{
		if($approved === 1){
			$comment = get_comment($comment_id);
			do_action('ap_publish_comment', $comment);
		}
	}

	public function comment_approve($comment)
	{
		do_action('ap_publish_comment', $comment);
	}

	public function comment_unapprove($comment)
	{
		do_action('ap_unpublish_comment', $comment);
	}
	public function comment_trash($comment_id)
	{
		$comment = get_comment($comment_id);
		do_action('ap_unpublish_comment', $comment);
	}

	/**
	 * Actions to run after posting a comment
	 * @param  int $approved
	 * @return null|integer   
	 */
	public function publish_comment($comment){

		$post_type = get_post_type( $comment['comment_post_ID'] );

		if ($post_type == 'question') {
			// set updated meta for sorting purpose
			update_post_meta($comment['comment_post_ID'], ANSPRESS_UPDATED_META, current_time( 'mysql' ));

			// add participant
			ap_add_parti($comment['comment_post_ID'], $comment['user_ID'], 'comment');

		}elseif($post_type == 'answer'){
			$post_id = wp_get_post_parent_id($comment['comment_post_ID']);
			// set updated meta for sorting purpose
			update_post_meta($post_id, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
			// add participant only
			ap_add_parti($post_id, $comment['user_ID'], 'comment');
		}

	}

	public function unpublish_comment($comment){
		$post_type = get_post_type( $comment['comment_post_ID'] );

		if ($post_type == 'question') {
			ap_remove_parti($comment['comment_post_ID'], $comment['user_ID'], 'comment');

		}elseif($post_type == 'answer'){
			$post_id = wp_get_post_parent_id($comment['comment_post_ID']);
			ap_remove_parti($post_id, $comment['user_ID'], 'comment');
		}

	}

	public function update_menu_url( $items ) {		
		global $ap_menu;

		if(!empty($items) && is_array($items))
			foreach ( $items as $key => $item ) {
				foreach($ap_menu as $slug => $args){
					
					if(strpos($item->url, $slug) !== FALSE)
						$item->url = $args['link'];
				}

			}

		return $items;
	}

	/**
	 * Check if flushing rewrite rule is needed
	 * @return void
	 */
	public function flush_rules(){
		if (ap_opt('ap_flush') != 'false') {
			flush_rewrite_rules( );
			ap_opt('ap_flush', 'false');
		}
	}
}