<?php

/**

 * Deals with the ticket info for an event

 * @author marcus

 *

 */

class EM_Tickets extends EM_Object implements Iterator{

	

	/**

	 * Array of EM_Ticket objects for a specific event

	 * @var array

	 */

	var $tickets = array();

	/**

	 * @var int

	 */

	var $event_id;

	/**

	 * @var EM_Booking

	 */

	var $booking;

	var $spaces;

	

	

	/**

	 * Creates an EM_Tickets instance

	 * @param mixed $event

	 */

	function EM_Tickets( $object = false ){

		global $wpdb;

		if( is_numeric($object) || (is_object($object) && in_array(get_class($object), array("EM_Event","EM_Booking"))) ){

			$this->event_id = (is_object($object)) ? $object->event_id:$object;

		    if( is_object($object) && get_class($object) == 'EM_Booking' ){

				$sql = "SELECT * FROM ". EM_TICKETS_TABLE ." WHERE ticket_id IN (SELECT ticket_id FROM ".EM_TICKETS_BOOKINGS_TABLE." WHERE booking_id='{$object->booking_id}') ORDER BY ".get_option('dbem_bookings_tickets_orderby');

		    }else{

		        $sql = "SELECT * FROM ". EM_TICKETS_TABLE ." WHERE event_id ='{$this->event_id}' ORDER BY ".get_option('dbem_bookings_tickets_orderby');

		    }

			$tickets = $wpdb->get_results($sql, ARRAY_A);

			foreach ($tickets as $ticket){

				$EM_Ticket = new EM_Ticket($ticket);

				$EM_Ticket->event_id = $this->event_id;

				$this->tickets[$EM_Ticket->ticket_id] = $EM_Ticket;

			}

		}elseif( is_array($object) ){ //expecting an array of EM_Ticket objects or ticket db array

			if( is_object(current($object)) && get_class(current($object)) == 'EM_Ticket' ){

			    foreach($object as $EM_Ticket){

					$this->tickets[$EM_Ticket->ticket_id] = $EM_Ticket;

			    }

			}else{

				foreach($object as $ticket){

					$EM_Ticket = new EM_Ticket($ticket);

					$EM_Ticket->event_id = $this->event_id;

					$this->tickets[$EM_Ticket->ticket_id] = $EM_Ticket;				

				}

			}

		}

		do_action('em_tickets', $this, $object);

	}

	

	/**

	 * @return EM_Event

	 */

	function get_event(){

		global $EM_Event;

		if( is_object($EM_Event) && $EM_Event->event_id == $this->event_id ){

			return $EM_Event;

		}else{

			return new EM_Event($this->event_id);

		}

	}



	/**

	 * does this ticket exist?

	 * @return bool 

	 */

	function has_ticket($ticket_id){

		foreach( $this->tickets as $EM_Ticket){

			if($EM_Ticket->ticket_id == $ticket_id){

				return apply_filters('em_tickets_has_ticket',true, $EM_Ticket, $this);

			}

		}

		return apply_filters('em_tickets_has_ticket',false, false,$this);

	}

	

	/**

	 * Get the first EM_Ticket object in this instance. Returns false if no tickets available.

	 * @return EM_Ticket

	 */

	function get_first(){

		if( count($this->tickets) > 0 ){

			foreach($this->tickets as $EM_Ticket){

				return $EM_Ticket;

			}

		}else{

			return false;

		}

	}

	

	/**

	 * Delete tickets in thie object

	 * @return boolean

	 */

	function delete(){

		global $wpdb;

		//get all the ticket ids

		$result = false;

		$ticket_ids = array();

		foreach( $this->tickets as $EM_Ticket ){

			$ticket_ids[] = $EM_Ticket->ticket_id;

		}

		//check that tickets don't have bookings

		if(count($ticket_ids) > 0){

			$bookings = $wpdb->get_var("SELECT COUNT(*) FROM ". EM_TICKETS_BOOKINGS_TABLE." WHERE ticket_id IN (".implode(',',$ticket_ids).")");

			if( $bookings > 0 ){

				$result = false;

				$this->add_error(__('You cannot delete tickets if there are any bookings associated with them. Please delete these bookings first.','dbem'));

			}else{

				$result = $wpdb->query("DELETE FROM ".EM_TICKETS_TABLE." WHERE event_id IN (".implode(',',$ticket_ids).")");

			}

		}

		return ($result !== false);

	}

	

	/**

	 * Retrieve multiple ticket info via POST

	 * @return boolean

	 */

	function get_post(){

		//Build Event Array

		do_action('em_tickets_get_post_pre', $this);

		$this->tickets = array(); //clean current tickets out

		if( !empty($_POST['em_tickets']) && is_array($_POST['em_tickets']) ){

			//get all ticket data and create objects

			global $allowedposttags;

			foreach($_POST['em_tickets'] as $row => $ticket_data){

			    if( $row > 0 ){

					$EM_Ticket = new EM_Ticket();

					$EM_Ticket->get_post($ticket_data);

					$this->tickets[] = $EM_Ticket;

			    }

			}

		}else{

			//we create a blank standard ticket

			$EM_Ticket = new EM_Ticket(array(

				'event_id' => $this->event_id,

				'ticket_name' => __('Standard','dbem')

			));

			$this->tickets[] = $EM_Ticket;

		}

		return apply_filters('em_tickets_get_post', count($this->errors) == 0, $this);

	}

	

	/**

	 * Go through the tickets in this object and validate them 

	 */

	function validate(){

		$this->errors = array();

		foreach($this->tickets as $EM_Ticket){

			if( !$EM_Ticket->validate() ){

				$this->add_error($EM_Ticket->get_errors());

			} 

		}

		return apply_filters('em_tickets_validate', count($this->errors) == 0, $this);

	}

	

	/**

	 * Save tickets into DB 

	 */

	function save(){

		$errors = array();

		foreach( $this->tickets as $EM_Ticket ){

			/* @var $EM_Ticket EM_Ticket */

			$EM_Ticket->event_id = $this->event_id; //pass on saved event_data

			$errors[] = $EM_Ticket->save();

		}

		return apply_filters('em_tickets_save', !in_array(false, $errors), $this);

	}

	

	/**

	 * Goes through each ticket and populates it with the bookings made

	 */

	function get_ticket_bookings(){

		foreach( $this->tickets as $EM_Ticket ){

			$EM_Ticket->get_bookings();

		}

	}

	

	/**

	 * Get the total number of spaces this event has. This will show the lower value of event global spaces limit or total ticket spaces. Setting $force_refresh to true will recheck spaces, even if previously done so.

	 * @param boolean $force_refresh

	 * @return int

	 */

	function get_spaces( $force_refresh=false ){

		$spaces = 0;

		if($force_refresh || $this->spaces == 0){

			foreach( $this->tickets as $EM_Ticket ){

				/* @var $EM_Ticket EM_Ticket */

				$spaces += $EM_Ticket->get_spaces();

			}

			$this->spaces = $spaces;

		}

		return apply_filters('em_booking_get_spaces',$this->spaces,$this);

	}

	

	/**

	 * Returns the collumns used in ticket public pricing tables/forms

	 * @param unknown_type $EM_Event

	 */

	function get_ticket_collumns($EM_Event = false){

		if( !$EM_Event ) $EM_Event = $this->get_event();

		$collumns = array( 'type' => __('Ticket Type','dbem'), 'price' => __('Price','dbem'), 'spaces' => __('Spaces','dbem'));

		if( $EM_Event->is_free() ) unset($collumns['price']); //add event price

		return apply_filters('em_booking_form_tickets_cols', $collumns, $EM_Event );

	}

	

	//Iterator Implementation

    public function rewind(){

        reset($this->tickets);

    }  

    public function current(){

        $var = current($this->tickets);

        return $var;

    }  

    public function key(){

        $var = key($this->tickets);

        return $var;

    }  

    public function next(){

        $var = next($this->tickets);

        return $var;

    }  

    public function valid(){

        $key = key($this->tickets);

        $var = ($key !== NULL && $key !== FALSE);

        return $var;

    }

}

?>