<?php
/*
 +--------------------------------------------------------------------+
 | CiviCRM version 4.5                                                |
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC (c) 2004-2014                                |
 +--------------------------------------------------------------------+
 | This file is a part of CiviCRM.                                    |
 |                                                                    |
 | CiviCRM is free software; you can copy, modify, and distribute it  |
 | under the terms of the GNU Affero General Public License           |
 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
 |                                                                    |
 | CiviCRM is distributed in the hope that it will be useful, but     |
 | WITHOUT ANY WARRANTY; without even the implied warranty of         |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
 | See the GNU Affero General Public License for more details.        |
 |                                                                    |
 | You should have received a copy of the GNU Affero General Public   |
 | License and the CiviCRM Licensing Exception along                  |
 | with this program; if not, contact CiviCRM LLC                     |
 | at info[AT]civicrm[DOT]org. If you have questions about the        |
 | GNU Affero General Public License or the licensing of CiviCRM,     |
 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
 +--------------------------------------------------------------------+
*/

/**
 *
 * @package CRM
 * @copyright CiviCRM LLC (c) 2004-2014
 * $Id$
 *
 */

/**
 * This class generates form components for Accounting Batch
 *
 */
class CRM_Financial_Form_FinancialBatch extends CRM_Contribute_Form {

  /**
   * The financial batch id, used when editing the field
   *
   * @var int
   * @access protected
   */
  protected $_id;

  /**
   * set variables up before form is built
   *
   * @return void
   * @access public
   */
  public function preProcess() {
    $context = CRM_Utils_Request::retrieve('context', 'String', $this);
    $this->set("context", $context);
    $this->_id = CRM_Utils_Request::retrieve('id', 'Positive', $this);
    parent::preProcess();
    $session = CRM_Core_Session::singleton();
    if ($this->_id) {
      $permissions = array(
        CRM_Core_Action::UPDATE => array(
          'permission' => array(
            'edit own manual batches',
            'edit all manual batches',
          ),
          'actionName' => 'edit'),
        CRM_Core_Action::DELETE => array(
          'permission' => array(
            'delete own manual batches',
            'delete all manual batches',
          ),
          'actionName' => 'delete'),
      );

      $createdID = CRM_Core_DAO::getFieldValue('CRM_Batch_DAO_Batch', $this->_id, 'created_id');
      if (!empty($permissions[$this->_action])) {
        $this->checkPermissions($this->_action, $permissions[$this->_action]['permission'], $createdID, $session->get('userID'), $permissions[$this->_action]['actionName'] );
      }
    }
  }

  /**
   * Build the form object
   *
   * @return void
   * @access public
   */
  public function buildQuickForm() {
    parent::buildQuickForm();
    $this->setPageTitle(ts('Financial Batch'));

    if (isset( $this->_id)) {
      $this->_title = CRM_Core_DAO::getFieldValue('CRM_Batch_DAO_Batch', $this->_id, 'title');
      CRM_Utils_System::setTitle($this->_title .' - '.ts( 'Accounting Batch'));
      $this->assign('batchTitle', $this->_title);
      $contactID = CRM_Core_DAO::getFieldValue('CRM_Batch_DAO_Batch', $this->_id, 'created_id');
      $contactName = CRM_Contact_BAO_Contact::displayName($contactID);
      $this->assign('contactName', $contactName);
    }

    $this->applyFilter('__ALL__', 'trim');

    $this->addButtons(
      array(
        array(
          'type' => 'next',
          'name' => ts('Save'),
          'isDefault' => true,
        ),
        array(
          'type' => 'next',
          'name' => ts('Save and New'),
          'subName' => 'new',
        ),
        array(
          'type' => 'cancel',
          'name' => ts('Cancel'),
        ),
      )
    );

    if ($this->_action & CRM_Core_Action::UPDATE && $this->_id) {
      $batchStatus = CRM_Core_PseudoConstant::get('CRM_Batch_DAO_Batch', 'status_id');

      //unset exported status
      $exportedStatusId = CRM_Utils_Array::key('Exported', $batchStatus );
      unset($batchStatus[$exportedStatusId]);
      $this->add('select', 'status_id', ts('Batch Status'), array('' => ts('- select -')) + $batchStatus, true);
      $this->freeze(array('status_id'));
    }

    $attributes = CRM_Core_DAO::getAttribute('CRM_Batch_DAO_Batch');

    $this->add('text', 'title', ts('Batch Name'), $attributes['name'], true);

    $this->add('textarea', 'description', ts('Description'), $attributes['description']);

    $this->add('select', 'payment_instrument_id', ts('Payment Instrument'),
      array('' => ts('- select -')) + CRM_Contribute_PseudoConstant::paymentInstrument(),
      false
    );

    $this->add('text', 'total', ts('Total Amount'), $attributes['total']);

    $this->add('text', 'item_count', ts('Number of Transactions'), $attributes['item_count']);
    $this->addFormRule(array('CRM_Financial_Form_FinancialBatch', 'formRule'), $this);
  }

  /**
   * Set default values for the form. Note that in edit/view mode
   * the default values are retrieved from the database
   *
   * @access public
   *
   * @return void
   */
  function setDefaultValues() {
    $defaults = parent::setDefaultValues();

    if ($this->_id) {
      $this->assign('modified_date', $defaults['modified_date']);
      $this->assign('created_date', $defaults['created_date']);
    }
    else {
      // set batch name default
      $defaults['title'] = CRM_Batch_BAO_Batch::generateBatchName();
    }

    return $defaults;
  }

  /**
   * global validation rules for the form
   *
   * @param array $values
   * @param $files
   * @param $self
   *
   * @return array list of errors to be posted back to the form
   * @static
   * @access public
   */
  static function formRule($values, $files, $self) {
    $errors = array();
    if (!empty($values['contact_name']) && !is_numeric($values['created_id'])) {
      $errors['contact_name'] = ts('Please select a valid contact.');
    }
    if ($values['item_count'] && (!is_numeric($values['item_count']) || $values['item_count'] < 1)) {
      $errors['item_count'] = ts('Number of Transactions should a positive number');
    }
    if ($values['total'] && (!is_numeric($values['total']) || $values['total'] <= 0)) {
      $errors['total'] = ts('Total Amount should be a positive number');
    }
    if (!empty($values['created_date']) && date('Y-m-d') < date('Y-m-d', strtotime($values['created_date']))) {
      $errors['created_date'] = ts('Created date cannot be greater than current date');
    }
    $batchName = $values['title'];
    if (!CRM_Core_DAO::objectExists($batchName, 'CRM_Batch_DAO_Batch', $self->_id)) {
      $errors['title'] = ts('This name already exists in database. Batch names must be unique.');
    }
    return CRM_Utils_Array::crmIsEmptyArray($errors) ? true : $errors;
  }

  /**
   * Process the form submission
   *
   * @access public
   * @return void
   */
  public function postProcess() {
    $session = CRM_Core_Session::singleton();
    $ids = array();
    $params = $this->exportValues();
    $batchStatus = CRM_Core_PseudoConstant::get('CRM_Batch_DAO_Batch', 'status_id');
    if ($this->_id) {
      $ids['batchID'] = $this->_id;
      $params['id'] = $this->_id;
    }

    // store the submitted values in an array
    $params['modified_date'] = date('YmdHis');
    $params['modified_id'] = $session->get('userID');
    if (!empty($params['created_date'])) {
      $params['created_date'] = CRM_Utils_Date::processDate($params['created_date']);
    }

    if ($this->_action & CRM_Core_Action::ADD) {
      $batchMode = CRM_Core_PseudoConstant::get('CRM_Batch_DAO_Batch', 'mode_id', array('labelColumn' => 'name'));
      $params['mode_id'] = CRM_Utils_Array::key('Manual Batch', $batchMode);
      $params['status_id'] = CRM_Utils_Array::key('Open', $batchStatus);
      $params['created_date'] = date('YmdHis');
      $params['created_id'] = $session->get('userID');
      $details = "{$params['title']} batch has been created by this contact.";
      $activityTypeName = 'Create Batch';
    }
    elseif ($this->_action & CRM_Core_Action::UPDATE && $this->_id) {
      $details = "{$params['title']} batch has been edited by this contact.";
      if (CRM_Utils_Array::value($params['status_id'], $batchStatus) == 'Closed') {
        $details = "{$params['title']} batch has been closed by this contact.";
      }
      $activityTypeName = 'Edit Batch';
    }

    $batch = CRM_Batch_BAO_Batch::create($params, $ids, 'financialBatch');

    $activityTypes = CRM_Core_PseudoConstant::activityType(TRUE, FALSE, FALSE, 'name');

    //create activity.
    $activityParams = array(
      'activity_type_id' => array_search($activityTypeName, $activityTypes),
      'subject' => $batch->title ."- Batch",
      'status_id' => 2,
      'priority_id' => 2,
      'activity_date_time' => date('YmdHis'),
      'source_contact_id' => $session->get('userID'),
      'source_contact_qid' => $session->get('userID'),
      'details' => $details,
    );

    CRM_Activity_BAO_Activity::create($activityParams);

    $buttonName = $this->controller->getButtonName();

    $context = $this->get("context");
    if ($batch->title) {
      CRM_Core_Session::setStatus(ts("'%1' batch has been saved.", array(1 => $batch->title)), ts('Saved'), 'success');
    }
    if ($buttonName == $this->getButtonName('next', 'new') & $this->_action == CRM_Core_Action::UPDATE) {
      $session->replaceUserContext(CRM_Utils_System::url('civicrm/financial/batch',
        "reset=1&action=add&context=1"));
    }
    elseif ($buttonName == $this->getButtonName('next', 'new')) {
      $session->replaceUserContext(CRM_Utils_System::url('civicrm/financial/batch',
        "reset=1&action=add"));
    }
    elseif (CRM_Utils_Array::value($batch->status_id, $batchStatus) == 'Closed') {
      $session->replaceUserContext(CRM_Utils_System::url('civicrm', 'reset=1'));
    }
    elseif (($buttonName == $this->getButtonName('next') & $this->_action == CRM_Core_Action::UPDATE) ||
      ($buttonName == $this->getButtonName('next') & $this->_action == CRM_Core_Action::ADD & $context == 1 )) {
      $session->replaceUserContext(CRM_Utils_System::url('civicrm/financial/financialbatches',
        "reset=1&batchStatus=1"));
    }
    else {
      $session->replaceUserContext(CRM_Utils_System::url('civicrm/batchtransaction',
        "reset=1&bid={$batch->id}"));
    }
  }

  /**
   * global validation rules for the form
   *
   * @param $action
   * @param $permissions
   * @param $createdID
   * @param $userContactID
   * @param $actionName
   *
   * @return array list of errors to be posted back to the form
   * @static
   * @access public
   */
  function checkPermissions($action, $permissions, $createdID, $userContactID, $actionName) {
    if ((CRM_Core_Permission::check($permissions[0]) || CRM_Core_Permission::check($permissions[1]))) {
      if (CRM_Core_Permission::check($permissions[0]) && $userContactID != $createdID && !CRM_Core_Permission::check($permissions[1])) {
        CRM_Core_Error::statusBounce(ts('You dont have permission to %1 this batch'), array(1 => $actionName));
      }
    }
    else {
      CRM_Core_Error::statusBounce(ts('You dont have permission to %1 this batch'), array(1 => $actionName));
    }
  }

}