<?php
/**
 * @file
 * Rules integration for uc_coupon
 */

/**
 * Implements hook_rules_data_info().
 */
function uc_coupon_rules_data_info() {
  $types['uc_coupon'] = array(
    'label' => t('Ubercart discount coupon'),
    'wrap' => FALSE,
    'group' => t('Ubercart'),
  );
}

/**
 * Implements hook_rules_condition_info().
 */
function uc_coupon_rules_condition_info() {
  $conditions['uc_coupon_condition_order_has_coupon'] = array(
    'label' => t('Check if an order has a coupon applied'),
    'group' => t('Order'),
    'parameter' => array(
      'order' => array(
        'type' => 'uc_order',
        'label' => t('Order'),
        'optional' => TRUE,
        'default value' => NULL,
        'allow null' => TRUE
      ),
      'codes' => array(
        'type' => 'list<text>',
        'label' => t('Codes'),
        'description' => t('Enter coupon codes that this condition will apply to, one per line. Wildcards are allowed, e.g. COUPON* will match all codes beginning with COUPON. Leave blank to apply to any order with a coupon.'),
        'restriction' => 'input',
      ),
    ),
  );
  
  $conditions['uc_coupon_condition_is_bulk'] = array(
    'label' => t('Check if a coupon is a bulk coupon'),
    'group' => t('Coupon'),
    'parameter' => array(
      'coupon' => array(
        'type' => 'uc_coupon',
        'label' => t('Coupon'),
      ),
    ),
  );

  return $conditions;
}

/**
 * Check if an order has a coupon applied.
 */
function uc_coupon_condition_order_has_coupon($order, $codes=array()) {
  $check_codes = array();
  // If the order is in checkout by the current user, use the current session coupons.
  if (_uc_coupon_is_checkout_order($order)) {
    $coupons = uc_coupon_session_validate();
    foreach ($coupons as $coupon) {
      $check_codes[$coupon->code] = $coupon->code;
    }
  }
  // Now add any codes alreay in the order object (these take precedence).
  elseif (isset($order->data['coupons'])) {
    $check_codes = drupal_map_assoc(array_keys($order->data['coupons']));
  }
  if (count($check_codes) > 0) {
    $codes = array_filter($codes);
    // If no codes specified, match any coupon.
    if (count($codes)==0) {
      return TRUE;
    }

    // Check codes for exact or wildcard matches.
    foreach ($codes as $code) {
      foreach (array_keys($check_codes) as $check_code) {
        if (preg_match('/^' . str_replace('\*', '.*?', preg_quote(strtoupper(trim($code)), '/')) . '$/', $check_code)) {
          return TRUE;
        }
      }
    }
  }

  return FALSE;
}

/**
 * Check that a coupon is a bulk coupon.
 */
function uc_coupon_condition_is_bulk($coupon) {
  return $coupon->bulk;
}