function commerce_gc_line_item_add_form_submit in Commerce GC 7

File

./commerce_gc.module, line 564

Provides Giftcard coupon bundle, Giftcard Transaction entity and basic user interface elements.

Code

function commerce_gc_line_item_add_form_submit($line_item, $element, &$form_state, $form) {

  // No need to go further if there are errors.
  if (form_get_errors()) {
    return;
  }

  // Make sure amount is either empty or a number greater than zero.
  $decimal_amount = $element['actions']['amount']['#value'];
  if ($decimal_amount && (!is_numeric($decimal_amount) || $decimal_amount < 0)) {
    return t('You have entered an invalid amount.');
  }
  $amount = commerce_currency_decimal_to_amount($decimal_amount, commerce_default_currency());

  // Make sure the giftcard exists.
  $code = $element['actions']['code']['#value'];
  $coupon = commerce_coupon_load_by_code($code);
  if (!$coupon || $coupon->type != 'giftcard_coupon') {
    return t('This giftcard does not exist.');
  }

  // Make sure there is not already a giftcard use line item referencing this
  // code.
  $order = $form_state['commerce_order'];
  $order_wrapper = entity_metadata_wrapper('commerce_order', $order);
  foreach ($order_wrapper->commerce_line_items as $order_line_item_wrapper) {
    if ($order_line_item_wrapper->type
      ->value() == 'giftcard_use' && $order_line_item_wrapper->commerce_giftcard->coupon_id
      ->value() == $coupon->coupon_id) {
      return t('You may not add the same giftcard code more than once per order.');
    }
  }

  // Make sure it has a positive balance.
  $balance = commerce_gc_giftcard_balance($coupon->coupon_id);
  if ($balance <= 0) {
    return t('This balance on this giftcard is not greater than zero.');
  }

  // Make sure that the amount entered does not exceed the balance
  if ($amount && $amount > $balance) {
    $balance_display = commerce_currency_format($balance, commerce_default_currency());
    return t('You have entered an amount greater than the balance on this card. Card balance is @balance', array(
      '@balance' => $balance_display,
    ));
  }
  commerce_order_calculate_total($order);
  $order_total = $order_wrapper->commerce_order_total->amount
    ->value();
  $ceiling_amount = $order_total < $balance ? $order_total : $balance;
  $line_item_amount = $amount ? $amount : $ceiling_amount;

  // This can happen if the order total is zero.
  if (!$line_item_amount) {
    return t('You cannot add a zero amount giftcard use line item.');
  }
  $line_item_wrapper = entity_metadata_wrapper('commerce_line_item', $line_item);

  // Set the giftcard reference
  $line_item_wrapper->commerce_giftcard = $coupon;

  // Set the price
  $price = array(
    'amount' => -$line_item_amount,
    'currency_code' => commerce_default_currency(),
    'data' => array(),
  );
  $line_item_wrapper->commerce_unit_price->amount = -$line_item_amount;
  $line_item_wrapper->commerce_unit_price->currency_code = commerce_default_currency();
  $base_price = array(
    'amount' => 0,
    'currency_code' => commerce_default_currency(),
    'data' => array(),
  );
  $line_item_wrapper->commerce_unit_price->data = commerce_price_component_add($base_price, $component_title, $price, TRUE);
}