<?php
/*
 +--------------------------------------------------------------------+
 | CiviCRM version 4.6                                                |
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC (c) 2004-2015                                |
 +--------------------------------------------------------------------+
 | 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        |
 +--------------------------------------------------------------------+
 */

/**
 * This api exposes CiviCRM Pledge payment.
 *
 * @package CiviCRM_APIv3
 */

/**
 * Add or update a pledge payment.
 *
 * Pledge Payment API doesn't actually add a pledge.
 * If the request is to 'create' and 'id' is not passed in
 * the oldest pledge with no associated contribution is updated.
 *
 * @todo possibly add ability to add payment if there are less payments than pledge installments
 * @todo possibly add ability to recalculate dates if the schedule is changed
 *
 * @param array $params
 *   Input parameters.
 *
 * @return array
 *   API Result
 */
function civicrm_api3_pledge_payment_create($params) {

  $paymentParams = $params;
  if (empty($params['id']) && empty($params['option.create_new'])) {
    $paymentDetails = CRM_Pledge_BAO_PledgePayment::getOldestPledgePayment($params['pledge_id']);
    if (empty($paymentDetails)) {
      return civicrm_api3_create_error("There are no unmatched payment on this pledge. Pass in the pledge_payment id to specify one or 'option.create_new' to create one");
    }
    elseif (is_array($paymentDetails)) {
      $paymentParams = array_merge($params, $paymentDetails);
    }
  }

  $dao = CRM_Pledge_BAO_PledgePayment::add($paymentParams);
  $result = array();
  if (empty($dao->pledge_id)) {
    $dao->find(TRUE);
  }
  _civicrm_api3_object_to_array($dao, $result[$dao->id]);

  //update pledge status
  CRM_Pledge_BAO_PledgePayment::updatePledgePaymentStatus($dao->pledge_id);

  return civicrm_api3_create_success($result, $params, 'PledgePayment', 'create', $dao);
}

/**
 * Adjust Metadata for Create action.
 *
 * The metadata is used for setting defaults, documentation & validation.
 *
 * @param array $params
 *   Array of parameters determined by getfields.
 */
function _civicrm_api3_pledge_payment_create_spec(&$params) {
  $params['pledge_id']['api.required'] = 1;
  $params['status_id']['api.required'] = 1;
}

/**
 * Delete a pledge Payment - Note this deletes the contribution not just the link.
 *
 * @param array $params
 *   Input parameters.
 *
 * @return array
 *   API result
 */
function civicrm_api3_pledge_payment_delete($params) {

  if (CRM_Pledge_BAO_PledgePayment::del($params['id'])) {
    return civicrm_api3_create_success(array('id' => $params['id']), $params, 'PledgePayment', 'delete');
  }
  else {
    return civicrm_api3_create_error('Could not delete payment');
  }
}

/**
 * Retrieve a set of pledges, given a set of input params.
 *
 * @param array $params
 *   Input parameters.
 *
 * @return array
 *   array of pledges, if error an array with an error id and error message
 */
function civicrm_api3_pledge_payment_get($params) {

  return _civicrm_api3_basic_get(_civicrm_api3_get_BAO(__FUNCTION__), $params);
}

/**
 * Gets field for civicrm_pledge_payment functions.
 *
 * @param array $params
 *   Modifiable list of fields allowed for the PledgePayment.get action.
 */
function civicrm_api3_pledge_payment_get_spec(&$params) {
  $params['option.create_new'] = array(
    'title' => "Create New",
    'description' => "Create new field rather than update an unpaid payment",
    'type' => CRM_Utils_Type::T_BOOLEAN,
  );
}