<?php

class StatementEntriesController 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: jqGridData
   *  - With the application controller handling the jqGridData action,
   *    these virtual functions ensure that the correct data is passed
   *    to jqGrid.
   */

  function jqGridDataTables(&$params, &$model) {
    $link =
      array(// Models
	    'LedgerEntry' =>
	    array('fields' => array('id'),
		  // Models
		  'Transaction' =>
		  array('fields' => array('id', 'stamp'),
			),

		  'Ledger' =>
		  array('fields' => array('id', 'sequence'),
			'conditions' => ("Ledger.id = IF(StatementEntry.type = 'CHARGE'," .
					 "               LedgerEntry.credit_ledger_id," .
					 "               LedgerEntry.debit_ledger_id)"),
			// Models
			'Account' => array('fields' => array('id', 'name'),
					   ),
			),
		  ),
	    );

    return array('link' => $link);
  }

  function jqGridDataFields(&$params, &$model) {
    $fields = array('id', 'type', 'comment');
    $fields[] = "IF(StatementEntry.type = 'CHARGE',  StatementEntry.amount, NULL) AS 'charge'";
    $fields[] = "IF(StatementEntry.type = 'PAYMENT', StatementEntry.amount, NULL) AS 'payment'";
    $fields[] = "IF(StatementEntry.type = 'CHARGE', 1, -1) * StatementEntry.amount AS 'amount'";
    return $fields;
  }

  function jqGridDataConditions(&$params, &$model) {
    $conditions = parent::jqGridDataConditions($params, $model);

    if (isset($params['custom']['statement_id'])) {
      $conditions[] =
	array('StatementEntry.statement_id' => $params['custom']['statement_id']);
    }

    return $conditions;
  }

  function jqGridRecordLinks(&$params, &$model, &$records, $links) {
    $links['Transaction']    = array('id');
    $links['StatementEntry'] = array('id');
    $links['Account']        = array('controller' => 'accounts', 'name');
    $links['LedgerEntry']    = array('id');
    return parent::jqGridRecordLinks($params, $model, $records, $links);
  }

  function jqGridRecordsPostProcess(&$params, &$model, &$records) {
    parent::jqGridRecordsPostProcess($params, $model, $records);

    $subtotal = 0;
    foreach ($records AS &$record) {
      $amount = $record['StatementEntry']['amount'];
      $record['StatementEntry']['amount'] = $amount;
      $record['StatementEntry']['subtotal'] = ($subtotal += $amount);
    }
  }


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * 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 StatementEntry and related fields
    $entry = $this->StatementEntry->find
      ('first',
       array('contain' => array(),
	     'conditions' => array('StatementEntry.id' => $id),
	     ));

    // Prepare to render.
    $title = "Statement Entry #{$entry['StatementEntry']['id']}";
    $this->set(compact('entry', 'title'));
  }
}