<?php
class UnitSize extends AppModel {

  var $belongsTo =
    array(
	  'UnitType',
	  );

  var $hasMany =
    array(
	  'Unit',
	  );


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: stats
   *  - Returns summary data from the requested unit size.
   */

  function stats($id = null) {
    $this->prEnter(compact('id'));

    // Right now, we only work with id not null
    if (!$id)
      return null;

    $stats = array();

    // Get the total number of units this size
    $stats['all'] =
      $this->find('count',
		  array('link' => array('Unit'),
			'conditions' => array(array('UnitSize.id' => $id)),
			));

    // Get numbers for units in the various states
    foreach (array('unavailable', 'vacant', 'occupied', 'locked', 'liened') AS $status) {
      $statusfunc = 'condition' . ucfirst($status);
      $stats[$status] =
	$this->find('count',
		    array('link' => array('Unit'),
			  'conditions' => array(array('UnitSize.id' => $id),
						$this->Unit->{$statusfunc}()),
			  ));
    }

    // Count up each unit by physical status
    foreach 
      ($this->find('all',
		   array('link' => array('Unit' => array('fields' => array())),
			 'fields' => array('Unit.status', 'COUNT(Unit.id) AS total'),
			 'conditions' => array(array('UnitSize.id' => $id)),
			 'group' => 'Unit.status',
			 )) AS $status) {
      $stats['status'][$status['Unit']['status']] = $status[0]['total'];
    }

    // Return the collection
    return $this->prReturn($stats);
  }

}