<?php

class LedgersController extends AppController {

  var $sidemenu_links =
    array(array('name' => 'Ledgers',      'header' => true),
	  array('name' => 'Current',      'url' => array('controller' => 'ledgers', 'action' => 'current')),
	  array('name' => 'Closed',       'url' => array('controller' => 'ledgers', 'action' => 'closed')),
	  array('name' => 'All',          'url' => array('controller' => 'ledgers', '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 / closed / all
   *  - Generate a list of ledgers
   */

  function index()     { $this->all(); }
  function current()   { $this->gridView('Current Ledgers'); }
  function closed()    { $this->gridView('Closed Ledgers');  }
  function all()       { $this->gridView('All Ledgers', '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('contain' => false);
  }

  function gridDataTables(&$params, &$model) {
    return array
      ('link' =>
       array(// Models
	     'Account',
	     'LedgerEntry',
	     'Close',
	     ),
       );
  }

  function gridDataFields(&$params, &$model) {
    return array_merge(array('Ledger.*',
			     'CONCAT(Account.id, "-", Ledger.sequence) AS id_sequence'),
		       $this->Ledger->LedgerEntry->debitCreditFields(true));
  }

  function gridDataConditions(&$params, &$model) {
    $conditions = parent::gridDataConditions($params, $model);

    if ($params['action'] === 'current') {
      $conditions[] = array('NOT' => array('Ledger.closed'));
    }
    elseif ($params['action'] === 'closed') {
      $conditions[] = 'Ledger.closed';
    }

    return $conditions;
  }

  function gridDataOrder(&$params, &$model, $index, $direction) {
    $id_sequence = false;
    if ($index === 'id_sequence') {
      $id_sequence = true;
      $index = 'Ledger.account_id';
    }

    $order = parent::gridDataOrder($params, $model, $index, $direction);

    if ($id_sequence) {
      $order[] = 'Ledger.sequence ' . $direction;
    }

    return $order;
  }

  function gridDataPostProcessLinks(&$params, &$model, &$records, $links) {
    $links['Ledger'] = array('id_sequence');
    $links['Account'] = array('name');
    return parent::gridDataPostProcessLinks($params, $model, $records, $links);
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * action: view
   *  - Displays information about a specific ledger
   */

  function view($id = null) {
    if (!$id) {
      $this->Session->setFlash(__('Invalid Item.', true));
      $this->redirect(array('action'=>'index'));
    }

    // Get details about the ledger itself (no entries yet)
    $ledger = $this->Ledger->find
      ('first',
       array('contain' =>
	     array(// Models
		   'Account',
		   ),
	     'conditions' => array(array('Ledger.id' => $id)),
	     )
       );

    // Get ledger stats for our summary box
    $stats = $this->Ledger->stats($id);

    // OK, set our view variables and render!
    $title = 'Ledger: #' . $ledger['Account']['id'] .'-'. $ledger['Ledger']['sequence'];
    $this->set(compact('ledger', 'title', 'stats'));
  }
}