<?php

class UnitsController extends AppController {
  var $paginate = array('limit' => 100,
			'group' => 'Unit.id',
			'order' => array('Unit.sort_order' => 'ASC'));

  var $sidemenu_links =
    array(array('name' => 'Units',        'header' => true),
	  array('name' => 'Occupied',     'url' => array('controller' => 'units', 'action' => 'occupied')),
	  array('name' => 'Vacant',       'url' => array('controller' => 'units', 'action' => 'vacant')),
	  array('name' => 'Unavailable',  'url' => array('controller' => 'units', 'action' => 'unavailable')),
	  array('name' => 'All',          'url' => array('controller' => 'units', 'action' => 'all')),
	  );


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: sideMenuLinks
   *  - Generates controller specific links for the side menu
   */
  function sideMenuLinks() {
    return array_merge(parent::sideMenuLinks(), $this->sidemenu_links);
  }

  
  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: index / current / past / all
   *  - Creates a list of tenants
   */

  function index()       { $this->all(); }
  function unavailable() { $this->jqGridView('unavailable', 'Unavailable Units'); }
  function vacant()      { $this->jqGridView('vacant',      'Vacant Units'); }
  function occupied()    { $this->jqGridView('occupied',    'Occupied Units'); }
  function all()         { $this->jqGridView('all',         'All Units'); }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * virtuals: jqGridData
   *  - With the application controller handling the jqGridData action,
   *    these virutal functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function jqGridDataSetup(&$params) {
    parent::jqGridDataSetup($params);
    if (!isset($params['action']))
      $params['action'] = 'all';
  }

  function jqGridDataTables(&$params) {
    $link = array
      ('link' =>
       array(// Models
	     'UnitSize' => array('fields' => array('name')),
	     ),
       );

    if ($params['action'] === 'occupied')
      $link['Lease'] = array('fields' => array(),
			     // Models
			     'Contact' => array('fields' => array('display_name'),
						//'type' => 'LEFT',
						),
			     );

    return $link;
  }

  function jqGridDataConditions(&$params) {
    $conditions = parent::jqGridDataConditions($params);

    if ($params['action'] === 'unavailable') {
      $conditions[] = $this->Unit->conditionUnavailable();
    }
    elseif ($params['action'] === 'vacant') {
      $conditions[] = $this->Unit->conditionVacant();
    }
    elseif ($params['action'] === 'occupied') {
      $conditions[] = $this->Unit->conditionOccupied();
    }

    return $conditions;
  }

  function zzjqGridDataRecordCount(&$params, $model, $query) {

    // We don't have a good way to use the query to obtain
    // our count.  The problem is that we're relying on the
    // group by for the query, which will destroy the count,
    // whether we omit the group by or leave it in.
    // So, build a fresh query for counting.

    $query['conditions'] = parent::jqGridDataConditions($params);

    $count = $model->find('count',
			  array_merge(array('link' => array_diff_key($query['link'],
								     array('CurrentLease'=>1))),
				      array_diff_key($query, array('link'=>1))));
				      
    if ($params['action'] === 'all')
      return $count;

    $query['conditions'][] = 'CurrentLease.id IS NULL';
    $count_past = $model->find('count', $query);

    // Since we can't easily count 'current' directly, we
    // can quickly derive it since 'current' customers
    // are mutually exclusive to 'past' customers.
    if ($params['action'] == 'current')
      $count = $count - $count_past;
    elseif ($params['action'] == 'past') {
      $count = $count_past;
    }

    return $count;
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: view
   *  - Displays information about a specific unit
   */

  function view($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('action'=>''));
    }

    $unit = $this->Unit->find
      ('first',
       array('contain' =>
	     array(// Models
		    'UnitSize',
		    'Lease' => array('Customer'),
		    'CurrentLease' => array('Customer')
		   ),
	     'conditions' => array('Unit.id' => $id),
	     ));

    // Get the balance on each lease.
    foreach ($unit['Lease'] AS &$lease) {
      $stats = $this->Unit->Lease->stats($lease['id']);
      $lease['balance'] = $stats['Account']['Ledger']['balance'];
    }

    $outstanding_balance = 0;
    $outstanding_deposit = 0;
    if (isset($unit['CurrentLease']['id'])) {
      // Figure out the outstanding balance of the current lease.
      $stats = $this->Unit->stats($id);
      $outstanding_balance =
	$stats['CurrentLease']['Account']['Ledger']['balance'];

      // Figure out the total security deposit for the current lease.
      $deposits = $this->Unit->Lease->findSecurityDeposits($unit['CurrentLease']['id']);
      $outstanding_deposit = $deposits['summary']['balance'];
    }

    $this->sidemenu_links[] =
      array('name' => 'Operations',       'header' => true);
    $this->sidemenu_links[] =
      array('name' => 'Move-Out',         'url' => array('controller' => 'units', 'action' => 'move-out'));

    // Prepare to render.
    $title = 'Unit ' . $unit['Unit']['name'];
    $this->set(compact('unit', 'title',
		       'outstanding_balance',
		       'outstanding_deposit'));
  }
}