<?php  
/**
 * Register shortcode and render post data as per shortcode configuration. 
 */ 
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly   
if ( ! class_exists( 'ajaxPostLoadmoreWidget' ) ) { 
	class ajaxPostLoadmoreWidget extends ajaxPostLoadmoreLib {
	 
	   /**
		* PHP5 constructor method.
		*
		* Run the following methods when this class is loaded
		*
		* @access  public
		* @since   1.0
		*
		* @return  void
		*/ 
		public function __construct() {
		
			add_action( 'init', array( &$this, 'init' ) ); 
			parent::__construct();
			
		}  
		
	   /**
		* Load required methods on wordpress init action 
		*
		* @access  public
		* @since   1.0
		*
		* @return  void
		*/ 
		public function init() {
		
			add_action( 'wp_ajax_aplm_getTotalPosts',array( &$this, 'getTotalPosts' ) );
			add_action( 'wp_ajax_aplm_getPosts',array( &$this, 'getPosts' ) ); 
			add_action( 'wp_ajax_aplm_getMorePosts',array( &$this, 'getMorePosts' ) );
			
			add_action( 'wp_ajax_nopriv_aplm_getTotalPosts', array( &$this, 'getTotalPosts' ) );
			add_action( 'wp_ajax_nopriv_aplm_getPosts', array( &$this, 'getPosts' ) ); 
			add_action( 'wp_ajax_nopriv_aplm_getMorePosts', array( &$this, 'getMorePosts' ) ); 
			
			add_shortcode( 'ajaxpostloadmore', array( &$this, 'ajaxPostLoadmore' ) ); 
			add_shortcode( 'richpostslistandgrid', array( &$this, 'ajaxPostLoadmore' ) ); 
			add_filter( 'widget_text', 'do_shortcode' );
			add_filter( 'widget_block_content', 'do_shortcode' );
			
		} 
		
	   /**
		* Get the total numbers of posts
		*
		* @access  public
		* @since   1.0
		* 
		* @return  int	  Total number of posts  	
		*/  
		public function getTotalPosts() { 
		
			global $wpdb;   
			
		   /**
			* Check security token from ajax request
			*/
			check_ajax_referer( $this->_config["security_key"], 'security' );

		   /**
			* Fetch posts as per search filter
			*/	
			$_res_total = $this->getSqlResult( 0, 0, 1 );
			
			return $_res_total[0]->total_val;
			 
		}	

		 
	   /**
		* Render templates for posts lists
		*
		* @access  public
		* @since   1.0
		*
		* @param   array   $params  Shortcode configuration options from admin settings
		* @return  string  Render templates accordion to request
		*/
		public function ajaxPostLoadmore( $params = array() ) {

			$params = is_array( $params ) ? $params : array();
			$previous_config = $this->_config;
			$ajaxpostloadmore_id = ! empty( $params['id'] ) ? absint( $params['id'] ) : 0;
			$aplm_shortcode = array();

			if ( $ajaxpostloadmore_id > 0 ) {
				$aplm_shortcode = get_post_meta( $ajaxpostloadmore_id );

				foreach ( $aplm_shortcode as $sc_key => $sc_val ) {
					$aplm_shortcode[ $sc_key ] = isset( $sc_val[0] ) ? $sc_val[0] : '';
				}
			}

			$aplm_shortcode = wp_parse_args( $params, $aplm_shortcode );
			unset( $aplm_shortcode['id'] );

			if ( 0 === $ajaxpostloadmore_id && empty( $aplm_shortcode ) ) {
				return '';
			}

			$this->_config = shortcode_atts( $this->_config, $aplm_shortcode );
			$this->_config['vcode'] = 'uid_' . md5( md5( wp_json_encode( $this->_config ) ) . $this->getUCode() );

			$template = sanitize_key( $this->_config['template'] );
			if ( ! in_array( $template, array( 'pane_style_1', 'pane_style_2', 'pane_style_3' ), true ) ) {
				$template = 'pane_style_1';
			}

			ob_start();
			require( $this->getajaxPostLoadmoreTemplate( 'template_' . $template . '.php' ) );
			$output = ob_get_clean();
			$this->_config = $previous_config;

			return $output;
		
		}   
		
	   /**
		* Load more post via ajax request
		*
		* @access  public
		* @since   1.0
		* 
		* @return  void Displays searched posts HTML to load more pagination
		*/	
		public function getMorePosts() {
		
			global $wpdb, $wp_query; 
			
		   /**
			* Check security token from ajax request
			*/
			check_ajax_referer($this->_config["security_key"], 'security' );
			
			$_total = ( isset( $_REQUEST["total"] )?esc_attr( $_REQUEST["total"] ):0 ); 
			$_limit_start = ( isset( $_REQUEST["limit_start"])?esc_attr( $_REQUEST["limit_start"] ):0 );
			$_limit_end = max( 1, absint( isset( $_REQUEST["number_of_post_display"] ) ? $_REQUEST["number_of_post_display"] : aplm_number_of_post_display ) );
			
		   /**
			* Fetch posts as per search filter
			*/	
			$_result_items = $this->getSqlResult( $_limit_start, $_limit_end );
		  
			require( $this->getajaxPostLoadmoreTemplate( 'ajax_load_more_posts.php' ) );	
			
			wp_die();
		}    
		
	   /**
		* Load more posts via ajax request
		*
		* @access  public
		* @since   1.0
		* 
		* @return  object Displays searched posts HTML
		*/
		public function getPosts() {
		
		   global $wpdb; 
			
		   /**
			* Check security token from ajax request
			*/	
		   check_ajax_referer( $this->_config["security_key"], 'security' );	   
		   
		   require( $this->getajaxPostLoadmoreTemplate( 'ajax_load_posts.php' ) );	
		   
  		   wp_die();
		
		}
		 
	   /**
		* Get post list with specified limit
		*
		* @access  public
		* @since   1.0 
		* 
		* @param   int     $_limit_end			 Limit to fetch post ending to given position
		* @return  object  Set of searched post data
		*/
		public function getPostList( $_limit_end ) {
			
		   /**
			* Check security token from ajax request
			*/	
			check_ajax_referer( $this->_config["security_key"], 'security' );		
			
		   /**
			* Fetch data from database
			*/
			return $this->getSqlResult( 0, $_limit_end );
			 
		} 
		
	}
	
}
new ajaxPostLoadmoreWidget();