<?php defined('SYSPATH') or die('No direct access allowed.');

/**
 * This class supports Company Rooms
 *
 * @package    Membership Database
 * @category   Models
 * @author     Deon George
 * @copyright  (c) 2014 Deon George
 * @license    http://dev.leenooks.net/license.html
 */
class Model_Rooms extends ORM {
	protected $_belongs_to = array(
		'site'=>array('model'=>'Setup'),
	);
	protected $_has_many = array(
		'dates'=>array('model'=>'Room_Dates','far_key'=>'id','foreign_key'=>'room_id'),
		'children'=>array('model'=>'Room_Children','far_key'=>'id','foreign_key'=>'room_id'),
	);

	protected $_form = array('id'=>'id','value'=>'name');

	public function availability_dates($date,$days=0,$code='A') {
		$result = array();
		$x = $date;

		$date_end = $date+$days*86400;
		$open_dates = $this->site->open_dates($date,$days);
		foreach ($this->dates->where('code','=',$code)->where_startstop($date,$date_end)->find_all() as $o) {
			$x = $date;

			while ($x<$date_end) {
				if (($o->date_start <= $x AND (is_null($o->date_stop) OR $o->date_stop >= $x))
					OR ($o->date_stop >= $x AND (is_null($o->date_start) OR $o->date_start <= $x))
					OR (is_null($o->date_start) AND is_null($o->date_start))) {

					$result[$x] = $o->avail(date('w',$x));

					$x += 86400;
					continue;
				}

				if (! isset($result[$x]) OR ! $result[$x])
					$result[$x] = 0;

				$x += 86400;
			}
		}

		// If we broke out and our date $days hasnt ben evaluated, we are closed
		while ($x<$date_end) {
			if (! isset($result[$x]) OR ! $result[$x])
				$result[$x] = 0;

			$x += 86400;
		}

		return $result;
	}

	// 'P' - Permanent
	public function child_list_date($date,$days,$code='P') {
		$result = array();
		$x = $date;

		// We need to set this, so that unassigned room records are found.
		if (! $this->loaded())
			$this->site_id = Company::instance()->site();

		$date_end = $date+$days*86400;
		$open_dates = $this->site->open_dates($date,$days);
		foreach ($this->children->where('code','=',$code)->where_startstop($date,$date_end)->find_all() as $o) {
			$x = $date;

			while ($x<$date_end) {
				// If we havent made the start date yet, we need to advance
				if (! $open_dates[$x]
					OR ($o->date_start > $x AND (is_null($o->date_stop) OR $o->date_stop > $date_end))
					OR ((is_null($o->date_start) OR $o->date_start > $x) AND $o->date_stop > $date_end)) {

					if (! isset($result[$x]) OR ! $result[$x])
						$result[$x] = array();

					$x += 86400;
					continue;
				}

				// Check that this record covers our current date
				if ($o->date_stop < $x AND ! is_null($o->date_stop))
					break;

				if (! isset($result[$x]))
					$result[$x] = array();

				if ($o->day(date('w',$x)))
					array_push($result[$x],$o->child);

				$x += 86400;
			}
		}

		// If we broke out and our date $days hasnt ben evaluated, we are closed
		while ($x<$date_end) {
			if (! isset($result[$x]) OR ! $result[$x])
				$result[$x] = array();

			$x += 86400;
		}

		return $result;
	}

	public function room_availablity($date,$days) {
		// We start with our availablity
		$result = $this->availability_dates($date,$days);

		// Less Permanents
		foreach ($this->child_list_date($date,$days) as $k => $v)
			$result[$k] -= count($v);

		// Add Absent
		foreach ($this->child_list_date($date,$days,'a') as $k => $v)
			$result[$k] += count($v);

		// Less Casuals
		foreach ($this->child_list_date($date,$days,'C') as $k => $v)
			$result[$k] -= count($v);

		// Less Waitlist
		foreach ($this->child_list_date($date,$days,'W') as $k => $v)
			$result[$k] -= count($v);

		return $result;
	}

	/**
	 * Rooms marked with the internal flag are the actual rooms that children are assigned in
	 * but cannot have an enrolment application for (there may be multiple rooms for the program).
	 * Thus a non "internal" room should be used for enrolments for the program.
	 */
	public function where_external() {
		return $this->where_open()->where('internal','is',NULL)->or_where('internal','=',0)->where_close();
	}
}
?>