<?php

class CustomersController extends AppController {


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: addGridViewSideMenuLinks
   *  - Adds grid view navigation side menu links
   */

  function addGridViewSideMenuLinks() {
    parent::addGridViewSideMenuLinks();

    $this->addSideMenuLink('Current',
			   array('controller' => 'customers', 'action' => 'current'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('Past',
			   array('controller' => 'customers', 'action' => 'past'), null,
			   'CONTROLLER');
    $this->addSideMenuLink('All',
			   array('controller' => 'customers', 'action' => 'all'), null,
			   'CONTROLLER');

    $this->addSideMenuLink('New Customer',
			   array('controller' => 'customers', 'action' => 'add'), null,
			   'ACTION', $this->new_area);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: index / current / past / all
   *  - Creates a list of customers
   */

  function index()   { $this->current(); }
  function current() { $this->gridView('Current Tenants', 'current'); }
  function past()    { $this->gridView('Past Tenants'); }
  function all()     { $this->gridView('All Customers'); }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * virtuals: gridData
   *  - With the application controller handling the gridData action,
   *    these virtual functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function gridDataCountTables(&$params, &$model) {
    return array
      ('link' =>
       array(// Models
	    'PrimaryContact',
	     ),
       );
  }

  function gridDataTables(&$params, &$model) {
    $link = $this->gridDataCountTables($params, $model);
    // StatementEntry is needed to determine customer balance
    $link['link']['StatementEntry'] = array('fields' => array());
    return $link;
  }

  function gridDataFields(&$params, &$model) {
    $fields = parent::gridDataFields($params, $model);
    return array_merge($fields,
		       $this->Customer->StatementEntry->chargeDisbursementFields(true));
  }

  function gridDataConditions(&$params, &$model) {
    $conditions = parent::gridDataConditions($params, $model);

    if ($params['action'] === 'current') {
      $conditions[] = array('Customer.current_lease_count >' => 0);
    }
    elseif ($params['action'] === 'past') {
      $conditions[] = array('Customer.current_lease_count' => 0);
      $conditions[] = array('Customer.past_lease_count >' => 0);
    }

    return $conditions;
  }

  function gridDataFilterTablesConfig(&$params, &$model, $table) {
    $config = parent::gridDataFilterTablesConfig($params, $model, $table);

    // Special case for Contact; We need the Contact/Customer relationship
    if ($table == 'Contact')
      $config = array('fields' => array('ContactsCustomer.type',
					'ContactsCustomer.active'),
		      'conditions' => array('ContactsCustomer.active' => true),
		      );

    return $config;
  }

  function gridDataOrder(&$params, &$model, $index, $direction) {
    $order = parent::gridDataOrder($params, $model, $index, $direction);

    // After sorting by whatever the user wants, add these
    // defaults into the sort mechanism.  If we're already
    // sorting by one of them, it will only be redundant,
    // and should cause no harm (possible a longer query?)
    $order[] = 'PrimaryContact.last_name ' . $direction;
    $order[] = 'PrimaryContact.first_name ' . $direction;
    $order[] = 'Customer.id ' . $direction;

    return $order;
  }

  function gridDataPostProcessLinks(&$params, &$model, &$records, $links) {
    $links['Customer'] = array('name');
    return parent::gridDataPostProcessLinks($params, $model, $records, $links);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: move_in
   *  - Sets up the move-in page for the given customer.
   */

  function move_in($id = null, $unit_id = null) {
    $customer = array();
    $unit = array();

    if (!empty($id)) {
      $this->Customer->recursive = -1;
      $customer = current($this->Customer->read(null, $id));
    }
    if (!empty($unit_id)) {
      $this->Customer->Lease->Unit->recursive = -1;
      $unit = current($this->Customer->Lease->Unit->read(null, $unit_id));
    }
    $this->set(compact('customer', 'unit'));

    $title = 'Customer Move-In';
    $this->set(compact('title'));
    $this->render('/leases/move');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: move_out
   *  - prepare to move a customer out of one of their units
   */

  function move_out($id) {

    $customer = $this->Customer->find
      ('first', array
       ('contain' => array
	(// Models
	 'Lease' =>
	 array('conditions' => array('Lease.moveout_date' => null),
	       // Models
	       'Unit' =>
	       array('order'  => array('sort_order'),
		     'fields' => array('id', 'name'),
		     ),
	       ),
	 ),

	'conditions' => array('Customer.id' => $id),
	));
    $this->set('customer', $lease['Customer']);
    $this->set('unit',     array());

    $redirect = array('controller' => 'customers',
		      'action' => 'view',
		      $id);

    $title = $customer['Customer']['name'] . ': Prepare Move-Out';
    $this->set(compact('title', 'customer', 'redirect'));
    $this->render('/leases/move');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: view
   *  - Displays information about a specific customer
   */

  function view($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('action'=>'index'));
    }

    // Get details on this customer, its contacts and leases
    $customer = $this->Customer->find
      ('first', array
       ('contain' => array
	(// Models
	 'Contact' =>
	 array('order'  => array('Contact.display_name'),
	       // Models
	       'ContactPhone',
	       'ContactEmail',
	       'ContactAddress',
	       ),
	 'Lease' =>
	 array('Unit' =>
	       array('order'  => array('sort_order'),
		     'fields' => array('id', 'name'),
		     ),
	       ),
	 ),

	'conditions' => array('Customer.id' => $id),
	));
    //pr($customer);

    // Determine how long this customer has been with us.
    $leaseinfo = $this->Customer->find
      ('first', array
       ('link' => array('Lease' => array('fields' => array())),
	'fields' => array('MIN(Lease.movein_date) AS since',
			  'IF(Customer.current_lease_count = 0, MAX(Lease.moveout_date), NULL) AS until'),
	'conditions' => array('Customer.id' => $id),
	'group' => 'Customer.id',
	));
    $this->set($leaseinfo[0]);

    // Figure out the outstanding balances for this customer
    //$this->set('stats', $this->Customer->stats($id));
    $outstanding_balance = $this->Customer->balance($id);
    $outstanding_deposit = $this->Customer->securityDepositBalance($id);

    // Figure out if this customer has any non-closed leases
    $show_moveout = false; $moveout_lease_id = null;
    $show_payment = false; $payment_lease_id = null;
    foreach ($customer['Lease'] AS $lease) {
      if (!isset($lease['close_date'])) {
	if ($show_payment)
	  $payment_lease_id = null;
	else
	  $payment_lease_id = $lease['id'];
	$show_payment = true;
      }
      if (!isset($lease['moveout_date'])) {
	if ($show_moveout)
	  $moveout_lease_id = null;
	else
	  $moveout_lease_id = $lease['id'];
	$show_moveout = true;
      }
    }

    // Set up dynamic menu items

    if ($show_payment || $outstanding_balance > 0)
      $this->addSideMenuLink('New Receipt',
			     array('action' => 'receipt', $id), null,
			     'ACTION');

    if ($show_payment) {
/*       $ids = $this->Customer->leaseIds($id, true); */
/*       if (count($ids) == 1) */
/* 	$lease_id = $ids[0]; */
/*       else */
/* 	$lease_id = null; */

      $this->addSideMenuLink('New Invoice',
			     array('controller' => 'leases',
				   'action' => 'invoice',
				   $payment_lease_id), null,
			     'ACTION');
    }

    $this->addSideMenuLink('Move-In',
			   array('action' => 'move_in', $id), null,
			   'ACTION');

    if ($show_moveout) {
      $this->addSideMenuLink('Move-Out',
			     array('controller' => 'leases',
				   'action' => 'move_out',
				   $moveout_lease_id), null,
			     'ACTION');
    }

    if (!$show_moveout && $outstanding_balance > 0)
      $this->addSideMenuLink('Write-Off',
			     array('action' => 'bad_debt', $id), null,
			     'ACTION');

    if ($outstanding_balance < 0)
      $this->addSideMenuLink('Issue Refund',
			     array('action' => 'refund', $id), null,
			     'ACTION');

    $this->addSideMenuLink('Edit',
			   array('action' => 'edit', $id), null,
			   'ACTION');

    // Prepare to render.
    $title = 'Customer: ' . $customer['Customer']['name'];
    $this->set(compact('customer', 'title',
                       'outstanding_balance',
                       'outstanding_deposit'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: edit
   *  - Edit customer information
   */

  function edit($id = null) {
    if (isset($this->data)) {
      // Check to see if the operation was cancelled.
      if (isset($this->params['form']['cancel'])) {
	if (isset($this->data['Customer']['id']))
	  $this->redirect(array('action'=>'view', $this->data['Customer']['id']));

	$this->redirect(array('action'=>'index'));
      }

      // Make sure we have at least one contact
      if (!isset($this->data['Contact']) || count($this->data['Contact']) == 0) {
	$this->Session->setFlash("MUST SPECIFY AT LEAST ONE CONTACT", true);
	$this->redirect(array('action'=>'view', $this->data['Customer']['id']));
      }

      // Make sure there is a primary contact
      if (!isset($this->data['Customer']['primary_contact_entry'])) {
	$this->Session->setFlash("MUST SPECIFY A PRIMARY CONTACT", true);
	$this->redirect(array('action'=>'view', $this->data['Customer']['id']));
      }

      // Go through each customer and strip the bogus ID if new
      foreach ($this->data['Contact'] AS &$contact) {
	if (isset($contact['source']) && $contact['source'] === 'new')
	  unset($contact['id']);
      }

      // Save the customer and all associated data
      if (!$this->Customer->saveCustomer($this->data['Customer']['id'],
					 $this->data,
					 $this->data['Customer']['primary_contact_entry'])) {
	$this->Session->setFlash("CUSTOMER SAVE FAILED", true);
	pr("CUSTOMER SAVE FAILED");
      }

      // If existing customer, then view it.
      if ($this->data['Customer']['id'])
	$this->redirect(array('action'=>'view', $this->Customer->id));

      // Since this is a new customer, go to the move in screen.
      // First set the move-in unit id, if there is one, ...
      if (empty($this->data['movein']['Unit']['id']))
	$unit_id = null;
      else
	$unit_id = $this->data['movein']['Unit']['id'];

      // ... then redirect
      $this->redirect(array('action'=>'move_in',
			    $this->Customer->id,
			    $unit_id,
			    ));
    }

    if ($id) {
      // REVISIT <AP>: 20090816
      //  This should never need to be done by a controller.
      //  However, until things stabilize, this gives the
      //  user a way to update any cached items on the
      //  customer, by just clicking Edit then Cancel.
      $this->Customer->update($id);

      // Get details on this customer, its contacts and leases
      $customer = $this->Customer->find
	('first', array
	 ('contain' => array
	  (// Models
	   'Contact' =>
	   array('order'  => array('Contact.display_name'),
		 // Models
		 'ContactPhone',
		 'ContactEmail',
		 'ContactAddress',
		 ),
	   'Lease' =>
	   array('Unit' =>
		 array('order'  => array('sort_order'),
		       'fields' => array('id', 'name'),
		       ),
		 ),
	   ),

	  'conditions' => array('Customer.id' => $id),
	  ));

      $this->data = $customer;
      $title = 'Customer: ' . $this->data['Customer']['name'] . " : Edit";
    }
    else {
      $title = "Enter New Customer";
      $this->data = array('Contact' => array(), 'PrimaryContact' => null);
    }

    $contact_types = array_flip($this->Customer->ContactsCustomer->getEnumValues('type'));
    unset($contact_types[0]);
    $contact_types = array_combine($contact_types, $contact_types);
    $this->set(compact('contact_types'));

    $contacts = $this->Customer->Contact->contactList();
    $this->set(compact('contacts'));

    // Prepare to render.
    //pr($this->data);
    $this->set(compact('title'));
    $this->render('edit');
  }

  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: add
   *  - Add a new customer
   */

  function add($unit_id = null) {
    $this->set('movein', array('Unit' => array('id' => $unit_id)));
    $this->edit();
  }

  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: receipt
   *  - Sets up the receipt entry page for the given customer.
   */

  function receipt($id = null) {
    if (isset($id)) {
      $this->Customer->recursive = -1;
      $customer = $this->Customer->read(null, $id);
      $customer = $customer['Customer'];
    }
    else {
      $customer = null;
    }

    $TT = new TenderType();
    $payment_types = $TT->paymentTypes();
    $default_type = $TT->defaultPaymentType();
    $this->set(compact('payment_types', 'default_type'));

    $title = ($customer['name'] . ': Receipt Entry');
    $this->set(compact('customer', 'title'));
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: refund
   *  - Refunds customer charges
   */

  function refund($id) {
    $customer = $this->Customer->find
      ('first', array
       ('contain' => false,
	'conditions' => array(array('Customer.id' => $id),
			      ),
	));
    if (empty($customer)) {
      $this->redirect(array('action'=>'view', $id));
    }

    // Determine the customer balance, bailing if the customer owes money
    $balance = $this->Customer->balance($id);
    if ($balance >= 0) {
      $this->redirect(array('action'=>'view', $id));
    }

    // The refund will be for a positive amount
    $balance *= -1;

    // Get the accounts capable of paying the refund
    $refundAccounts = $this->Customer->StatementEntry->Account->refundAccounts();
    $defaultAccount = current($refundAccounts);
    $this->set(compact('refundAccounts', 'defaultAccount'));

    // Prepare to render
    $title = ($customer['Customer']['name'] . ': Refund');
    $this->set(compact('title', 'customer', 'balance'));
    $this->render('/transactions/refund');
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: bad_debt
   *  - Sets up the write-off entry page, so that the
   *    user can write off remaining charges of a customer.
   */

  function bad_debt($id) {
    $this->Customer->id = $id;
    $customer = $this->Customer->find
      ('first', array
       ('contain' => false,
	));

    // Make sure we have a valid customer to write off
    if (empty($customer))
      $this->redirect(array('action' => 'index'));

    // Get the customer balance
    $balance = $this->Customer->balance($id);

    // Prepare to render
    $title = ($customer['Customer']['name'] . ': Write Off Bad Debt');
    $this->set(compact('title', 'customer', 'balance'));
    $this->render('/transactions/bad_debt');
  }

}