<?php

class LedgerEntriesController extends AppController {

  var $sidemenu_links = array();


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * override: sideMenuLinks
   *  - Generates controller specific links for the side menu
   */
  function sideMenuLinks() {
    return array_merge(parent::sideMenuLinks(), $this->sidemenu_links);
  }

  
  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * virtuals: gridData
   *  - With the application controller handling the gridData action,
   *    these virtual functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function gridDataTables(&$params, &$model) {
    $link =
      array(// Models
	    'Transaction' =>
	    array('fields' => array('id', 'stamp'),
		  ),

	    'Ledger' =>
	    array('fields' => array('id', 'sequence'),
		  'Account' => 
		  array('fields' => array('id', 'name', 'type'),
			),
		  ),

	    'Tender' =>
	    array('fields' => array('id', 'name'),
		  ),

/* 	    'DebitEntry', */
/* 	    'CreditEntry', */
	    );

    return array('link' => $link);
  }

  function gridDataFields(&$params, &$model) {
    $fields = parent::gridDataFields($params, $model);
    return array_merge($fields,
		       $this->LedgerEntry->debitCreditFields());
  }

  function gridDataOrder(&$params, &$model, $index, $direction) {
/*     if ($index === 'balance') */
/*       return ($index .' '. $direction); */
    $order = parent::gridDataOrder($params, $model, $index, $direction);

    if ($index === 'Transaction.stamp') {
      $order[] = 'LedgerEntry.id ' . $direction;
    }

    return $order;
  }

  function gridDataPostProcessLinks(&$params, &$model, &$records, $links) {
    $links['LedgerEntry']    = array('id');
    $links['Transaction']    = array('id');
    $links['Ledger']         = array('id');
    $links['Account']        = array('controller' => 'accounts', 'name');
    $links['Tender']         = array('name');
    return parent::gridDataPostProcessLinks($params, $model, $records, $links);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: view
   *  - Displays information about a specific entry
   */

  function view($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('controller' => 'accounts', 'action'=>'index'));
    }

    // Get the Entry and related fields
    $entry = $this->LedgerEntry->find
      ('first',
       array('contain' => array
	     (
	      'Transaction' =>
	      array('fields' => array('id', 'stamp'),
		    ),

	      'Ledger' =>
	      array('fields' => array('id', 'sequence', 'name'),
		    'Account' => 
		    array('fields' => array('id', 'name', 'type', 'trackable'),
			),
		  ),

	      'Tender' =>
	      array('fields' => array('id', 'name'),
		    ),

	      'DebitEntry'  => array('fields' => array('id', 'crdr')),
	      'CreditEntry' => array('fields' => array('id', 'crdr')),
	      ),

	     'conditions' => array('LedgerEntry.id' => $id),
	     ));

    if (!empty($entry['DebitEntry']) && !empty($entry['CreditEntry']))
      die("LedgerEntry has both a matching DebitEntry and CreditEntry");
    if (empty($entry['DebitEntry']) && empty($entry['CreditEntry']))
      die("LedgerEntry has neither a matching DebitEntry nor a CreditEntry");
    if (empty($entry['DebitEntry']) && count($entry['CreditEntry']) != 1)
      die("LedgerEntry has more than one CreditEntry");
    if (empty($entry['CreditEntry']) && count($entry['DebitEntry']) != 1)
      die("LedgerEntry has more than one DebitEntry");

    if (empty($entry['DebitEntry']))
      $entry['MatchingEntry'] = $entry['CreditEntry'][0];
    else
      $entry['MatchingEntry'] = $entry['DebitEntry'][0];

    // Prepare to render.
    $title = "Ledger Entry #{$entry['LedgerEntry']['id']}";
    $this->set(compact('entry', 'title'));
  }

}