<?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        |
 +--------------------------------------------------------------------+
*/

/**
 * File for the CiviCRM APIv3 Contribution functions
 *
 * @package CiviCRM_APIv3
 * @subpackage API_Contribute
 *
 * @copyright CiviCRM LLC (c) 2004-2014
 * @version $Id: Contribution.php 30486 2010-11-02 16:12:09Z shot $
 *
 */

/**
 * Add or update a contribution
 *
 * @param  array $params (reference ) input parameters
 *
 * @throws API_Exception
 * @return array  Api result array
 * @static void
 * @access public
 * @example ContributionCreate.php
 * {@getfields Contribution_create}
 */
function civicrm_api3_contribution_create(&$params) {
  $values = array();
  _civicrm_api3_custom_format_params($params, $values, 'Contribution');
  $params = array_merge($params, $values);

  if (!empty($params['id']) && !empty($params['contribution_status_id'])) {
    $error = array();
    //throw error for invalid status change such as setting completed back to pending
    //@todo this sort of validation belongs in the BAO not the API - if it is not an OK
    // action it needs to be blocked there. If it is Ok through a form it needs to be OK through the api
    CRM_Contribute_BAO_Contribution::checkStatusValidation(NULL, $params, $error);
    if (array_key_exists('contribution_status_id', $error)) {
      throw new API_Exception($error['contribution_status_id']);
    }
  }

  _civicrm_api3_contribution_create_legacy_support_45($params);

  return _civicrm_api3_basic_create(_civicrm_api3_get_BAO(__FUNCTION__), $params, 'Contribution');
}

/**
 * Adjust Metadata for Create action
 *
 * The metadata is used for setting defaults, documentation & validation
 * @param array $params array or parameters determined by getfields
 */
function _civicrm_api3_contribution_create_spec(&$params) {
  $params['contact_id']['api.required'] = 1;
  $params['total_amount']['api.required'] = 1;
  $params['payment_instrument_id']['api.aliases'] = array('payment_instrument');
  $params['receive_date']['api.default'] = 'now';
  $params['payment_processor'] = array(
    'name' => 'payment_processor',
    'title' => 'Payment Processor ID',
    'description' => 'ID of payment processor used for this contribution',
    // field is called payment processor - not payment processor id but can only be one id so
    // it seems likely someone will fix it up one day to be more consistent - lets alias it from the start
    'api.aliases' => array('payment_processor_id'),
  );
  $params['financial_type_id']['api.aliases'] = array('contribution_type_id', 'contribution_type');
  $params['financial_type_id']['api.required'] = 1;
  $params['note'] = array(
    'name' => 'note',
    'uniqueName' => 'contribution_note',
    'title' => 'note',
    'type' => 2,
    'description' => 'Associated Note in the notes table',
  );
  $params['soft_credit_to'] = array(
    'name' => 'soft_credit_to',
    'title' => 'Soft Credit contact ID (legacy)',
    'type' => 1,
    'description' => 'ID of Contact to be Soft credited to (deprecated - use contribution_soft api)',
    'FKClassName' => 'CRM_Contact_DAO_Contact',
  );
  $params['honor_contact_id'] = array(
    'name' => 'honor_contact_id',
    'title' => 'Honoree contact ID (legacy)',
    'type' => 1,
    'description' => 'ID of honoree contact (deprecated - use contribution_soft api)',
    'FKClassName' => 'CRM_Contact_DAO_Contact',
  );
  $params['honor_type_id'] = array(
    'name' => 'honor_type_id',
    'title' => 'Honoree Type (legacy)',
    'type' => 1,
    'description' => 'Type of honoree contact (deprecated - use contribution_soft api)',
    'pseudoconstant' => TRUE,
  );
  // note this is a recommended option but not adding as a default to avoid
  // creating unnecessary changes for the dev
  $params['skipRecentView'] = array(
    'name' => 'skipRecentView',
    'title' => 'Skip adding to recent view',
    'type' => CRM_Utils_Type::T_BOOLEAN,
    'description' => 'Do not add to recent view (setting this improves performance)',
  );
  $params['skipLineItem'] = array(
    'name' => 'skipLineItem',
    'title' => 'Skip adding line items',
    'type' => 1,
    'api.default' => 0,
    'description' => 'Do not add line items by default (if you wish to add your own)',
  );
  $params['batch_id'] = array(
    'title' => 'Batch',
    'type' => 1,
    'description' => 'Batch which relevant transactions should be added to',
  );
}

/**
* Support for schema changes made in 4.5
* The main purpose of the API is to provide integrators a level of stability not provided by
* the core code or schema - this means we have to provide support for api calls (where possible)
* across schema changes.
*/
function _civicrm_api3_contribution_create_legacy_support_45(&$params){
  //legacy soft credit handling - recommended approach is chaining
  if(!empty($params['soft_credit_to'])){
    $params['soft_credit'][] = array(
      'contact_id'          => $params['soft_credit_to'],
      'amount'              => $params['total_amount'],
      'soft_credit_type_id' => CRM_Core_OptionGroup::getDefaultValue("soft_credit_type")
    );
  }
  if(!empty($params['honor_contact_id'])){
    $params['soft_credit'][] = array(
      'contact_id'          => $params['honor_contact_id'],
      'amount'              => $params['total_amount'],
      'soft_credit_type_id' => CRM_Utils_Array::value('honor_type_id', $params, CRM_Core_OptionGroup::getValue('soft_credit_type', 'in_honor_of', 'name'))
    );
  }
}

/**
 * Delete a contribution
 *
 * @param  array   $params           (reference ) input parameters
 *
 * @return boolean        true if success, else false
 * @static void
 * @access public
 * {@getfields Contribution_delete}
 * @example ContributionDelete.php
 */
function civicrm_api3_contribution_delete($params) {

  $contributionID = !empty($params['contribution_id']) ? $params['contribution_id'] : $params['id'];
  if (CRM_Contribute_BAO_Contribution::deleteContribution($contributionID)) {
    return civicrm_api3_create_success(array($contributionID => 1));
  }
  else {
    return civicrm_api3_create_error('Could not delete contribution');
  }
}

/**
 * modify metadata. Legacy support for contribution_id
 */
function _civicrm_api3_contribution_delete_spec(&$params) {
  $params['id']['api.aliases'] = array('contribution_id');
}

/**
 * Retrieve a set of contributions, given a set of input params
 *
 * @param  array $params (reference ) input parameters
 *
 * @internal param array $returnProperties Which properties should be included in the
 * returned Contribution object. If NULL, the default
 * set of properties will be included.
 *
 * @return array (reference )        array of contributions, if error an array with an error id and error message
 * @static void
 * @access public
 * {@getfields Contribution_get}
 * @example ContributionGet.php
 */
function civicrm_api3_contribution_get($params) {

  $mode = CRM_Contact_BAO_Query::MODE_CONTRIBUTE;
  $entity = 'contribution';
  list($dao, $query) = _civicrm_api3_get_query_object($params, $mode, $entity);

  $contribution = array();
  while ($dao->fetch()) {
    //CRM-8662
    $contribution_details = $query->store($dao);
    $softContribution = CRM_Contribute_BAO_ContributionSoft::getSoftContribution($dao->contribution_id , TRUE);
    $contribution[$dao->contribution_id] = array_merge($contribution_details, $softContribution);
    if(isset($contribution[$dao->contribution_id]['financial_type_id'])){
      $contribution[$dao->contribution_id]['financial_type_id'] = $contribution[$dao->contribution_id]['financial_type_id'];
    }
    // format soft credit for backward compatibility
    _civicrm_api3_format_soft_credit($contribution[$dao->contribution_id]);
  }
  return civicrm_api3_create_success($contribution, $params, 'contribution', 'get', $dao);
}

/**
 * This function is used to format the soft credit for backward compatibility
 * as of v4.4 we support multiple soft credit, so now contribution returns array with 'soft_credit' as key
 * but we still return first soft credit as a part of contribution array
 */
function _civicrm_api3_format_soft_credit(&$contribution) {
  if (!empty($contribution['soft_credit'])) {
    $contribution['soft_credit_to'] = $contribution['soft_credit'][1]['contact_id'];
    $contribution['soft_credit_id'] = $contribution['soft_credit'][1]['soft_credit_id'];
  }
}

/**
 * Adjust Metadata for Get action
 *
 * The metadata is used for setting defaults, documentation & validation
 * @param array $params array or parameters determined by getfields
 */
function _civicrm_api3_contribution_get_spec(&$params) {
  $params['contribution_test']['api.default'] = 0;
  $params['contribution_test']['title'] = 'Get Test Contributions?';
  $params['financial_type_id']['api.aliases'] = array('contribution_type_id');
  $params['contact_id'] = $params['contribution_contact_id'];
  $params['contact_id']['api.aliases'] = array('contribution_contact_id');
  unset($params['contribution_contact_id']);
}

/**
 * take the input parameter list as specified in the data model and
 * convert it into the same format that we use in QF and BAO object
 *
 * @param array $params Associative array of property name/value
 * pairs to insert in new contact.
 * @param array $values The reformatted properties that we can use internally
 * '
 *
 * @param bool $create
 *
 * @return array|CRM_Error
 * @access public
 */
function _civicrm_api3_contribute_format_params($params, &$values, $create = FALSE) {
//legacy way of formatting from v2 api - v3 way is to define metadata & do it in the api layer
  _civicrm_api3_filter_fields_for_bao('Contribution', $params, $values);
  return array();
}

/**
 * Adjust Metadata for Transact action
 *
 * The metadata is used for setting defaults, documentation & validation
 * @param array $params array or parameters determined by getfields
 */
function _civicrm_api3_contribution_transact_spec(&$params) {
  $fields = civicrm_api3('contribution', 'getfields', array('action' => 'create'));
  $params = array_merge($params, $fields['values']);
  $params['receive_date']['api.default'] = 'now';
}

/**
 * Process a transaction and record it against the contact.
 *
 * @param  array   $params           (reference ) input parameters
 *
 * @return array (reference )        contribution of created or updated record (or a civicrm error)
 * @static void
 * @access public
 *
 */
function civicrm_api3_contribution_transact($params) {
  // Set some params specific to payment processing
  $params['payment_processor_mode'] = empty($params['is_test']) ? 'live' : 'test';
  $params['amount'] = $params['total_amount'];
  if (!isset($params['net_amount'])) {
    $params['net_amount'] = $params['amount'];
  }
  if (!isset($params['invoiceID']) && isset($params['invoice_id'])) {
    $params['invoiceID'] = $params['invoice_id'];
  }

  $paymentProcessor = CRM_Financial_BAO_PaymentProcessor::getPayment($params['payment_processor'], $params['payment_processor_mode']);
  if (civicrm_error($paymentProcessor)) {
    return $paymentProcessor;
  }

  $payment = CRM_Core_Payment::singleton($params['payment_processor_mode'], $paymentProcessor);
  if (civicrm_error($payment)) {
    return $payment;
  }

  $transaction = $payment->doDirectPayment($params);
  if (civicrm_error($transaction)) {
    return $transaction;
  }

  // but actually, $payment->doDirectPayment() doesn't return a
  // CRM_Core_Error by itself
  if (is_object($transaction) && get_class($transaction) == 'CRM_Core_Error') {
    $errs = $transaction->getErrors();
    if (!empty($errs)) {
      $last_error = array_shift($errs);
      return CRM_Core_Error::createApiError($last_error['message']);
    }
  }
  $params['payment_instrument_id'] = CRM_Core_DAO::getFieldValue('CRM_Financial_DAO_PaymentProcessorType', $paymentProcessor['payment_processor_type_id'], 'payment_type') == 1 ? 'Credit Card' : 'Debit Card';
  return civicrm_api('contribution', 'create', $params);
}

/**
 * Send a contribution confirmation (receipt or invoice)
 * The appropriate online template will be used (the existence of related objects
 * (e.g. memberships ) will affect this selection
 *
 * @param array $params input parameters
 * {@getfields Contribution_sendconfirmation}
 *
 * @throws Exception
 * @return array  Api result array
 * @static void
 * @access public
 */
function civicrm_api3_contribution_sendconfirmation($params) {
  $contribution = new CRM_Contribute_BAO_Contribution();
  $contribution->id = $params['id'];
  if (! $contribution->find(TRUE)) {
    throw new Exception('Contribution does not exist');
}
  $input = $ids = $cvalues = array('receipt_from_email' => $params['receipt_from_email']);
  $contribution->loadRelatedObjects($input, $ids, FALSE, TRUE);
  $contribution->composeMessageArray($input, $ids, $cvalues, FALSE, FALSE);
}

/**
 * Adjust Metadata for sendconfirmation action
 *
 * The metadata is used for setting defaults, documentation & validation
 * @param array $params array or parameters determined by getfields
 */
function _civicrm_api3_contribution_sendconfirmation_spec(&$params) {
  $params['id'] = array(
    'api.required' => 1,
    'title' => 'Contribution ID'
  );
  $params['receipt_from_email'] = array(
    'api.required' =>1,
    'title' => 'From Email address (string) required until someone provides a patch :-)',
  );
  $params['receipt_from_name'] = array(
    'title' => 'From Name (string)',
  );
  $params['cc_receipt'] = array(
    'title' => 'CC Email address (string)',
  );
  $params['bcc_receipt'] = array(
    'title' => 'BCC Email address (string)',
  );
  $params['receipt_text'] = array(
    'title' => 'Message (string)',
  );
}

/**
 * Complete an existing (pending) transaction, updating related entities (participant, membership, pledge etc)
 * and taking any complete actions from the contribution page (e.g. send receipt)
 *
 * @todo - most of this should live in the BAO layer but as we want it to be an addition
 * to 4.3 which is already stable we should add it to the api layer & re-factor into the BAO layer later
 *
 * @param array $params input parameters
 * {@getfields Contribution_completetransaction}
 *
 * @throws API_Exception
 * @return array  Api result array
 * @static void
 * @access public
 */
function civicrm_api3_contribution_completetransaction(&$params) {

  $input = $ids = array();
  $contribution = new CRM_Contribute_BAO_Contribution();
  $contribution->id = $params['id'];
  $contribution->find(TRUE);
  if(!$contribution->id == $params['id']){
    throw new API_Exception('A valid contribution ID is required', 'invalid_data');
  }
  try {
    if(!$contribution->loadRelatedObjects($input, $ids, FALSE, TRUE)){
      throw new API_Exception('failed to load related objects');
    }
    elseif ($contribution->contribution_status_id == CRM_Core_OptionGroup::getValue('contribution_status', 'Completed', 'name')) {
      throw new API_Exception(ts('Contribution already completed'));
    }
    $objects = $contribution->_relatedObjects;
    $objects['contribution'] = &$contribution;
    $input['component'] = $contribution->_component;
    $input['is_test'] = $contribution->is_test;
    $input['trxn_id']= !empty($params['trxn_id']) ? $params['trxn_id'] : $contribution->trxn_id;
    $input['amount'] = $contribution->total_amount;
    if(isset($params['is_email_receipt'])){
      $input['is_email_receipt'] = $params['is_email_receipt'];
    }
    // @todo required for base ipn but problematic as api layer handles this
    $transaction = new CRM_Core_Transaction();
    $ipn = new CRM_Core_Payment_BaseIPN();
    $ipn->completeTransaction($input, $ids, $objects, $transaction, !empty($contribution->contribution_recur_id));
  }
  catch(Exception $e) {
    throw new API_Exception('failed to load related objects' . $e->getMessage() . "\n" . $e->getTraceAsString());
  }
}

/**
 * provide function metadata
 * @param $params
 */
function _civicrm_api3_contribution_completetransaction_spec(&$params) {
  $params['id'] = array(
    'title' => 'Contribution ID',
    'type' => CRM_Utils_Type::T_INT,
    'api.required' => TRUE,
  );
  $params['trxn_id'] = array(
    'title' => 'Transaction ID',
    'type' => CRM_Utils_Type::T_STRING,
  );
  $params['is_email_receipt'] = array(
    'title' => 'Send email Receipt?',
    'type' => CRM_Utils_Type::T_BOOLEAN,
  );
}