<?php
/**
 * AnsPress.
 *
 * @package   AnsPress
 * @author    Rahul Aryan <admin@rahularyan.com>
 * @license   GPL-2.0+
 * @link      http://rahularyan.com
 * @copyright 2014 Rahul Aryan
 */

class AnsPress_Form_Helper
{
    /**
     * Instance of this class.
     */
    protected static $instance = null;
    /**
     * Return an instance of this class.
     * @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;
    }
    /**
     * Initialize the plugin by setting localization and loading public scripts
     * and styles.
     */
    public function __construct()
    {


		
		/*TODO: remove this, only anspress comment from ajax*/
		add_action('comment_post', array($this, 'save_comment'), 20, 2);
	
		//add_action( 'ap_after_delete_comment', array($this, 'after_deleting_comment'), 10, 2 ); 
		
		
		add_action( 'wp_ajax_ap_submit_question', array($this, 'ajax_question_submit') ); 
		add_action( 'wp_ajax_nopriv_ap_submit_question', array($this, 'ajax_question_submit') ); 
		
		add_action( 'wp_ajax_ap_submit_answer', array($this, 'ajax_answer_submit') ); 
		add_action( 'wp_ajax_nopriv_ap_submit_answer', array($this, 'ajax_answer_submit') ); 
				
		add_action('wp_insert_comment', array($this, 'comment_inserted'), 99, 2);

		add_action( 'wp_ajax_ap_new_tag', array($this, 'ap_new_tag') );
		add_action( 'wp_ajax_ap_load_new_tag_form', array($this, 'ap_load_new_tag_form') );
    }


	

	
	public function delete_comment(){
		$args = $args = explode('-', sanitize_text_field($_REQUEST['args']));
		if(!ap_user_can_delete_comment($args[0])){
			$result = array('status' => false, 'message' => __('You do not have permission to delete this comment', 'anspress-question-answer'));
			
			die(json_encode($result));
		}		
		$action = 'delete-comment-'.$args[0];		
		if(wp_verify_nonce( $args[1], $action )){
			$comment = get_comment($args[0]);
			$delete = wp_delete_comment( $args[0], true );
			if($delete){						
				$post_type = get_post_type( $comment->comment_post_ID );
				do_action('ap_after_delete_comment', $comment, $post_type);
				
				if ($post_type == 'question') 
					ap_do_event('delete_comment', $comment, 'question');
				elseif($post_type == 'answer')
					ap_do_event('delete_comment', $comment, 'answer');
			}
			$result = array('status' => true, 'message' => __('Comment deleted successfully', 'anspress-question-answer'));
			die(json_encode($result));
		}
		die();
	}
	
	/** TODO: Add this again */
	public function after_deleting_comment($comment, $post_type){
		if ($post_type == 'question') {
			ap_remove_parti($comment->comment_post_ID, $comment->user_id, 'comment', $comment->comment_ID);
		}elseif($post_type == 'answer'){
			$post_id = wp_get_post_parent_id($comment->comment_post_ID);
			ap_remove_parti($post_id, $comment->user_id, 'comment', $comment->comment_ID);
		}
	}

	
	public function comment_inserted($comment_id, $comment_object) {
		if($comment_object->comment_approved =='1' ){
			$post = get_post( $comment_object->comment_post_ID );			
			
			if ($post->post_type == 'question') {
				ap_do_event('new_comment', $comment_object, 'question', '');
				// set updated meta for sorting purpose
				update_post_meta($comment_object->comment_post_ID, ANSPRESS_UPDATED_META, current_time( 'mysql' ));
				
				// add participant	
				//ap_add_parti($comment_object->comment_post_ID, $comment_object->user_id, 'comment', $comment_id);
			}elseif($post->post_type == 'answer'){
				ap_do_event('new_comment', $comment_object, 'answer', $post->post_parent);
				$post_id = wp_get_post_parent_id($comment_object->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_object->user_id, 'comment', $comment_id);
			}
		}
	}
		
	/**
	 * TODO: EXTENSION - move to tags
	 */
	public function ask_from_tags_field($validate){
		if(ap_opt('enable_tags')):
		?>
			<div class="form-group<?php echo isset($validate['tags']) ? ' has-error' : ''; ?>">
				<label for="tags"><?php _e('Tags', 'anspress-question-answer') ?></label>
				<input data-role="ap-tagsinput" type="text" value="" tabindex="5" name="tags" id="tags" class="form-control" />
				<?php echo isset($validate['tags']) ? '<span class="help-block">'. $validate['tags'] .'</span>' : ''; ?>
			</div>
		<?php
		endif;
	}
	
	
	
	public function edit_question_from_tags_field($question, $validate){
		if(ap_opt('enable_tags')):
			$tags_t = get_the_terms( $question->ID, 'question_tags' );
			$tags ='';
			
			if($tags_t){
				foreach($tags_t as $t){
					$tags .= $t->name.', ';
				}
			}
			
			?>
				<div class="form-group<?php echo isset($validate['tags']) ? ' has-error' : ''; ?>">
					<label for="tags"><?php _e('Tags', 'anspress-question-answer') ?></label>
					<input type="text" data-role="ap-tagsinput" value="<?php echo $tags; ?>" tabindex="5" name="tags" id="tags" class="form-control" />
					<?php echo isset($validate['tags']) ? '<span class="help-block">'. $validate['tags'] .'</span>' : ''; ?>
				</div>
			<?php
		endif;
	}

	public function ap_load_edit_form(){
		$nonce 			= sanitize_text_field($_POST['nonce']);
		$post_id 	= sanitize_text_field($_POST['id']);
		$type 			= sanitize_text_field($_POST['type']);		
		
		if(wp_verify_nonce( $nonce, $type.'-'.$post_id )){
			$post = get_post($post_id);

			if( ap_user_can_edit_question($post_id) && $post->post_type == 'question'){
				ob_start();
				ap_edit_question_form($post_id);
				$html = ob_get_clean();
				
				$result = array('action' => true, 'type' => 'question', 'message' => __('Form loaded.', 'anspress-question-answer'), 'html' => $html);
			}elseif( ap_user_can_edit_answer($post_id) && $post->post_type == 'answer'){
				ob_start();
				ap_edit_answer_form($post_id);
				$html = ob_get_clean();
				
				$result = array('action' => true, 'type' => 'answer', 'message' => __('Form loaded.', 'anspress-question-answer'), 'html' => $html);
			}else{
				$result = array('action' => false, 'message' => __('You do not have permission to edit this question.', 'anspress-question-answer'));
			}
		}else{
			$result = array('action' => false, 'message' => __('Something went wrong, please try again.', 'anspress-question-answer'));
		}
		
		die(json_encode($result));
	}

	/**
	 * Run on login_form_defaults filter so we can reset a few of the default values
	 * @param  Array $args The login default filter passed in from the wp_login_form() function
	 * @return Array       The modified arguments array
	 */
	public function login_form_defaults($args) {
		$args['label_username'] = 'Username / Email';
		$args['value_remember'] = true;
		return $args;
	}

	/**
	 * Add additional fields to bottom of the login form
	 * @param  String $content The existing content 
	 * @return String
	 */
	public function login_form_bottom_html($content)
	{
		/*
		 * Only add these AJAX login fields if the user wants 
		 * to use an AJAX login form
		 */
		if (ap_opt('ajax_login')) {
			$content .= '<input type="hidden" name="action" value="ap_ajax_login" />';
			$content .= wp_nonce_field( 'ap_login_nonce', '_wpnonce', true, false ); 
		}
		$content .= '<p>' . sprintf(__("Don't have a user account? %sRegister now%s.", 'anspress-question-answer'), '<a class="ap-open-modal" href="#ap_signup_modal">', '</a>') . '</p>';

		return $content;
	}	
	
	
	public function ap_new_tag(){
		if(!wp_verify_nonce( $_POST['_nonce'], 'new_tag' ) && ap_user_can_create_tag())
			die();
			
		$term = wp_insert_term(
		  $_POST['tag_name'],
		  'question_tags', // the taxonomy
		  array(
			'description'=> $_POST['tag_desc']
		  )
		);
		if ( is_wp_error($term) ){
			$result = array('status' => false, 'message' => __('Unable to create tag, please try again.', 'anspress-question-answer'));
		
		}else{
			$result = array('status' => true, 'message' => __('Successfully created a tag.', 'anspress-question-answer'), 'tag' => get_term_by( 'id', $term['term_id'], 'question_tags') );
		}
		die(json_encode($result));
	}
	
	public function ap_load_new_tag_form(){
		if(!wp_verify_nonce( $_REQUEST['args'], 'new_tag_form' ) && ap_user_can_create_tag()){
			$result = array('status' => false, 'message' => __('Unable to load form, please try again.', 'anspress-question-answer'));
		}else{			
			$result = array('status' => true, 'message' => __('Successfully loaded form.', 'anspress-question-answer'), 'html' => ap_tag_form() );
		}
		die(json_encode($result));
	}
}




/*function ap_edit_answer_form($post_id){
	global $ap_answer_form_validation;
	$validate = $ap_answer_form_validation;
	
	$post = get_post($post_id);
	
	if( !ap_user_can_edit_ans($post_id)){
		echo '<p>'.__('You don\'t have permission to edit this answer.', 'ap').'</p>';
		return;
	}
	
	if(!empty($validate['has_error'])){
		echo '<div class="alert alert-danger" data-dismiss="alert"><button type="button" class="close" data-dismiss="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>'. __('Problem submitting form, please recheck form', 'ap') .'</div>';
	}
	
	if(ap_user_can_edit_ans($post->ID) ){
		echo '<form action="" id="edit_form" class="ap-content-inner" method="POST" data-action="ap-submit-answer">';
		
		echo '<div class="form-groups">';
		echo '<div class="ap-fom-group-label">'.__('Edit answer', 'ap').'</div>';
		do_action('ap_edit_answer_fields', $post, $validate);
		echo '</div>';
			
		ap_edit_answer_form_hidden_input($post->ID);
		echo '</form>';
	}
}*/
function ap_edit_answer_form_hidden_input($post_id){
	wp_nonce_field('post_nonce-'.$post_id, 'nonce');
	echo '<input type="hidden" name="is_answer" value="true" />';
	echo '<input type="hidden" name="answer_id" value="'.$post_id.'" />';
	echo '<input type="hidden" name="edited" value="true" />';
	echo '<input type="hidden" name="submitted" value="true" />';
	echo '<input type="submit" class="btn btn-primary" value="'. __('Update Answer', 'anspress-question-answer'). '" />';
}


function ap_tag_form(){
	$output = '';	
	$output .= '<form method="POST" id="ap_new_tag_form">';
	$output .= '<strong>'.__('Create new tag', 'anspress-question-answer').'</strong>';
	$output .= '<input type="text" name="tag_name" class="form-control" value="" placeholder="'.__('Enter tag', 'anspress-question-answer').'" />';
	$output .= '<textarea type="text" name="tag_desc" class="form-control" value="" placeholder="'.__('Description of tag.', 'anspress-question-answer').'"></textarea>';
	$output .= '<button type="submit" class="ap-btn">'.__('Create tag', 'anspress-question-answer').'</button>';
	$output .= '<input type="hidden" name="action" value="ap_new_tag" />';
	$output .= '<input type="hidden" name="_nonce" value="'.wp_create_nonce('new_tag').'" />';
	$output .= '</form>';
	
	return $output;
	
}