<?php

class UnitsController extends AppController {


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: addGridViewSideMenuLinks
   *  - Adds grid view navigation side menu links
   */

  function addGridViewSideMenuLinks() {
    parent::addGridViewSideMenuLinks();

    $this->addSideMenuLink('Unavailable',
			   array('controller' => 'units', 'action' => 'unavailable'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('Vacant',
			   array('controller' => 'units', 'action' => 'vacant'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('Occupied',
			   array('controller' => 'units', 'action' => 'occupied'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('Overlocked',
			   array('controller' => 'units', 'action' => 'locked'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('Liened',
			   array('controller' => 'units', 'action' => 'liened'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('All',
			   array('controller' => 'units', 'action' => 'all'), null,
			   'CONTROLLER');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: index / unavailable / vacant / occupied / all
   *  - Generate a listing of units
   */

  function index()       { $this->all(); }
  function unavailable() { $this->gridView('Unavailable Units'); }
  function vacant()      { $this->gridView('Vacant Units'); }
  function occupied()    { $this->gridView('Occupied Units'); }
  function locked()      { $this->gridView('Overlocked Units'); }
  function liened()      { $this->gridView('Liened Units'); }
  function all()         { $this->gridView('All Units', 'all'); }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * virtuals: gridData
   *  - With the application controller handling the gridData action,
   *    these virtual functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function gridDataSetup(&$params) {
    parent::gridDataSetup($params);
    if (!isset($params['action']))
      $params['action'] = 'all';
  }

  function gridDataCountTables(&$params, &$model) {
    return array
      ('link' => array('UnitSize'     => array('fields' => array('id', 'name')),
		       'CurrentLease' => array('fields' => array('id'))));

/*     if ($params['action'] === 'occupied') */
/*       $link['Lease'] = array('fields' => array(), */
/* 			     // Models */
/* 			     'Contact' => array('fields' => array('display_name'), */
/* 						//'type' => 'LEFT', */
/* 						), */
/* 			     ); */

  }

  function gridDataTables(&$params, &$model) {
    $link = $this->gridDataCountTables($params, $model);
    $link['link']['CurrentLease']['StatementEntry'] = array('fields' => array());
    return $link;
  }

/*   function gridDataTables(&$params, &$model) { */
/*     return array */
/*       ('link' => array('Unit'     => array('fields' => array('Unit.id', 'Unit.name')), */
/* 		       'Customer' => array('fields' => array('Customer.id', 'Customer.name')))); */
/*   } */

  function gridDataFields(&$params, &$model) {
    $fields = parent::gridDataFields($params, $model);

    $fields[] = 'ROUND(UnitSize.width/12 * UnitSize.depth/12, 0) AS sqft';
    return array_merge($fields,
		       $this->Unit->Lease->StatementEntry->chargeDisbursementFields(true));
  }

  function gridDataConditions(&$params, &$model) {
    $conditions = parent::gridDataConditions($params, $model);

    if ($params['action'] === 'unavailable') {
      $conditions[] = $this->Unit->conditionUnavailable();
    }
    elseif ($params['action'] === 'vacant') {
      $conditions[] = $this->Unit->conditionVacant();
    }
    elseif ($params['action'] === 'occupied') {
      $conditions[] = $this->Unit->conditionOccupied();
    }
    elseif ($params['action'] === 'unoccupied') {
      $conditions[] = array('NOT' => array($this->Unit->conditionOccupied()));
    }
    elseif ($params['action'] === 'locked') {
      $conditions[] = $this->Unit->conditionLocked();
    }
    elseif ($params['action'] === 'liened') {
      $conditions[] = $this->Unit->conditionLiened();
    }

    return $conditions;
  }

  function gridDataOrder(&$params, &$model, $index, $direction) {
    // Instead of sorting by name, sort by defined order
    if ($index === 'Unit.name')
      $index = 'Unit.sort_order';

    $order = array();
    $order[] = parent::gridDataOrder($params, $model, $index, $direction);

    // If sorting by anything other than name (defined order)
    // add the sort-order as a secondary condition
    if ($index !== 'Unit.name')
      $order[] = parent::gridDataOrder($params, $model,
					 'Unit.sort_order', $direction);

    return $order;
  }

  function gridDataPostProcessLinks(&$params, &$model, &$records, $links) {
    $links['Unit'] = array('name');
    $links['UnitSize'] = array('name');
    return parent::gridDataPostProcessLinks($params, $model, $records, $links);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: move_in
   *  - Sets up the move-in page for the given unit.
   */

  function move_in($id = null) {
    $customer = array();
    $unit = array();

    if (!empty($id)) {
      $this->Unit->recursive = -1;
      $unit = current($this->Unit->read(null, $id));
    }

    $title = 'Unit Move-In';
    $this->set(compact('customer', 'unit', 'title'));
    $this->render('/leases/move');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: move_out
   *  - prepare or execute a move out on a specific lease
   */

  function move_out($id) {

    $unit = $this->Unit->find
      ('first', array
       ('contain' => array
	(// Models
	 'CurrentLease' =>
	 array(//'conditions' => array('Lease.moveout_date' => null),
	       // Models
	       'Customer' =>
	       array('fields' => array('id', 'name'),
		     ),
	       ),
	 ),
	'conditions' => array('Unit.id' => $id),
	));
    $this->set('customer', $unit['CurrentLease']['Customer']);
    $this->set('unit',     $unit['Unit']);
    $this->set('lease',    $unit['CurrentLease']);

    $redirect = array('controller' => 'units',
		      'action' => 'view',
		      $id);

    $title = ('Lease #' . $unit['CurrentLease']['number'] . ': ' .
	      $unit['Unit']['name'] . ': ' .
	      $unit['CurrentLease']['Customer']['name'] . ': Prepare Move-Out');
    $this->set(compact('title', 'redirect'));
    $this->render('/leases/move');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: lock/unlock/lien
   *  - Transitions the unit into / out of the LOCKED state
   */

  function status($id, $status) {
    $this->Unit->updateStatus($id, $status, true);
    $this->redirect(array('action' => 'view', $id));
  }

  function lock($id) {
    if (isset($this->data)) {
      $id = $this->id = $this->data['Unit']['id'];

      // Check to see if the operation was cancelled.
      if (isset($this->params['form']['cancel'])) {
	if (isset($id))
	  $this->redirect(array('action'=>'view', $id));

	$this->redirect(array('action'=>'index'));
      }

      // Figure out which locks the user put on
      $locks = array();
      if (isset($this->data['Lock']) && is_array($this->data['Lock'])) {
	foreach ($this->data['Lock'] AS $lock) {
	  $locks[] = $lock['id'];
	}
      }

      // Save the lock and all associated data
      if (!$this->Unit->lockUnit($id, $locks)) {
    	$this->Session->setFlash("UNIT LOCK FAILED", true);
    	pr("UNIT LOCK FAILED");
      }

      // If it's no longer locked, change status to OCCUPIED
      // Could still be liened... but that would be odd.
      if (count($locks) == 0)
	$this->status($id, 'OCCUPIED');

      // If we're not liened, we must now just be locked
      if (!$this->Unit->liened($id))
	$this->status($id, 'LOCKED');

      // Otherwise, don't change anything.
      $this->redirect(array('action' => 'view', $id));
    }

    if (!$id)
	$this->INTERNAL_ERROR("$id cannot be NULL");

    // Get all locks on this unit
    $this->data = $this->Unit->find
      ('first',
       array('contain' => array('Lock' => array('id')),
	     'fields' => array('id'),
	     'conditions' => array('Unit.id' => $id)
	     ));

    $locks = $this->Unit->Lock->lockList();
    /* $locksold = $locks; */
    /* foreach ($locksold AS $name) { */
    /*   $locks[$name] = $name; */
    /* } */
    $this->set(compact('locks'));

    // Prepare to render.
    //pr($this->data);
    $this->set(compact('title'));
    //    $this->render('lock');
  }


  function unlock($id)  { $this->lock($id); }
  function lien($id)    { $this->status($id, 'LIENED'); }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: overview
   *  - Displays overview information for all units
   */
  function overview() {
    $result = $this->Unit->find
      ('all',
       array('link' => array('UnitSize' => array('fields' => array(), 'UnitType' => array('fields' => array('name')))),
	     'fields' => array('status', 'COUNT(Unit.id) AS cnt', 'SUM(Unit.rent) AS rents'),
	     //'conditions' => array('
	     'group' => array('UnitType.id', 'Unit.status'),
	     'order' => array('UnitType.name', 'Unit.status')
	     ));

    $overview = array('types' => array(), 'count' => 0, 'rents' => 0);
    foreach ($result AS $row) {
      $utname = $row['UnitType']['name'];
      if (empty($overview['types'][$utname]))
	$overview['types'][$utname] = array('name' => $utname,
					    'subs' => array(),
					    'count' => 0,
					    'rents' => 0,
					    'phys_pct' => 0,
					    'econ_pct' => 0);
      $type = &$overview['types'][$utname];
      $type['subs'][] = array('name' => $row['Unit']['status'],
			      'count' => $row[0]['cnt'],
			      'rents' => $row[0]['rents'],
			      'phys_subpct' => 0,
			      'phys_totpct' => 0,
			      'econ_subpct' => 0,
			      'econ_totpct' => 0);


      $type['count'] += $row[0]['cnt'];
      $type['rents'] += $row[0]['rents'];

      $overview['count'] += $row[0]['cnt'];
      $overview['rents'] += $row[0]['rents'];
    }

    foreach ($overview['types'] AS &$type) {
      foreach ($type['subs'] AS &$sub) {
	$sub['phys_subpct'] = $sub['count'] / $type['count'];
	$sub['econ_subpct'] = $sub['rents'] / $type['rents'];
	$sub['phys_totpct'] = $sub['count'] / $overview['count'];
	$sub['econ_totpct'] = $sub['rents'] / $overview['rents'];
      }
      $type['phys_pct'] = $type['count'] / $overview['count'];
      $type['econ_pct'] = $type['rents'] / $overview['rents'];
    }

    // Enable the Reports menu section
    $this->sideMenuAreaActivate('REPORT');

    // Prepare to render.
    $this->set('title', 'Unit Overview');
    $this->set(compact('overview'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * 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['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']['balance'];

      // Figure out the total security deposit for the current lease.
      $deposits = $this->Unit->Lease->securityDeposits($unit['CurrentLease']['id']);
      $outstanding_deposit = $this->Unit->Lease->securityDepositBalance($unit['CurrentLease']['id']);
    }

    // If the unit is occupied, but not locked, provide a
    // mechanism to do so.  This doesn't have to be restricted
    // to past due customers.  There are times we need to
    // overlock customers in good standing, such as if their
    // lock breaks, is cut, or missing for any reason.
    if ($this->Unit->occupied($unit['Unit']['status']) &&
	!$this->Unit->locked($unit['Unit']['status']))
      $this->addSideMenuLink('Lock',
			     array('action' => 'lock', $id), null,
			     'ACTION');

    // If the unit is locked, provide an option to unlock it,
    if ($this->Unit->locked($unit['Unit']['status']))
      $this->addSideMenuLink('Relock/Unlock',
			     array('action' => 'lock', $id), null,
			     'ACTION');

    // If the unit is locked, but not liened, give option to lien.
    if ($this->Unit->locked($unit['Unit']['status']) &&
	!$this->Unit->liened($unit['Unit']['status']))
      $this->addSideMenuLink('Lien',
			     array('action' => 'lien', $id), null,
			     'ACTION');

    // If there is a current lease on this unit, then provide
    // a link to move the tenant out.  Current lease for a unit
    // has a bit different definition than a current lease for
    // a customer, since a lease stays with a customer until it
    // is finally closed.  A lease, however, only stays with a
    // unit while occupied (since a unit is not responsible for
    // any lingering financial obligations, like a customer is).
    // Of course, if there is no current lease, provide a link
    // to move a new tenant in (if the unit is available).
    if (isset($unit['CurrentLease']['id'])) {
      $this->addSideMenuLink('Move-Out',
			     array('action' => 'move_out', $id), null,
			     'ACTION');
    } elseif ($this->Unit->available($unit['Unit']['status'])) {
      $this->addSideMenuLink('Move-In',
			     array('action' => 'move_in', $id), null,
			     'ACTION');
    } else {
      // Unit is unavailable (dirty, damaged, reserved, business-use, etc)
    }

    // If there is a current lease, allow new charges to
    // be added, and payments to be made.
    if (isset($unit['CurrentLease']['id'])) {
      $this->addSideMenuLink('New Invoice',
			     array('controller' => 'leases',
				   'action' => 'invoice',
				   $unit['CurrentLease']['id']), null,
			     'ACTION');
      $this->addSideMenuLink('New Receipt',
			     array('controller' => 'customers',
				   'action' => 'receipt',
				   $unit['CurrentLease']['customer_id']), null,
			     'ACTION');
    }

    // Always allow the unit to be edited.
    $this->addSideMenuLink('Edit',
			   array('action' => 'edit', $id), null,
			   'ACTION');

    // Prepare to render.
    $title = 'Unit ' . $unit['Unit']['name'];
    $this->set(compact('unit', 'title',
		       'outstanding_balance',
		       'outstanding_deposit'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: edit
   *  - Edit unit information
   */

  function edit($id = null) {
    if (isset($this->data)) {
      // Check to see if the operation was cancelled.
      if (isset($this->params['form']['cancel'])) {
	if (empty($this->data['Unit']['id']))
	  $this->redirect(array('action'=>'index'));

	$this->redirect(array('action'=>'view', $this->data['Unit']['id']));
      }

      // Make sure we have unit data
      if (empty($this->data['Unit']))
	$this->redirect(array('action'=>'index'));

      // Make sure we have a rental rate
      if (empty($this->data['Unit']['rent']))
	$this->redirect(array('action'=>'view', $this->data['Unit']['id']));

      // Save the unit and all associated data
      $this->Unit->create();
      $this->Unit->id = $this->data['Unit']['id'];
      if (!$this->Unit->save($this->data, false)) {
	$this->Session->setFlash("UNIT SAVE FAILED", true);
	pr("UNIT SAVE FAILED");
      }

      $this->redirect(array('action'=>'view', $this->Unit->id));
    }

    if ($id) {
      $this->data = $this->Unit->findById($id);
      $title = 'Unit ' . $this->data['Unit']['name'] . " : Edit";
    }
    else {
      $title = "Enter New Unit";
      $this->data = array();
    }

    $statusEnums = $this->Unit->allowedStatusSet($id);
    $statusEnums = array_combine(array_keys($statusEnums),
				 array_keys($statusEnums));
    $this->set(compact('statusEnums'));

    $unit_sizes = $this->Unit->UnitSize->find
      ('list', array('order' => array('unit_type_id', 'width', 'depth', 'id')));
    $this->set(compact('unit_sizes'));

    // Prepare to render.
    $this->set(compact('title'));
  }


}