From 9399379d77de02b666a23916914b64b20efa41ea Mon Sep 17 00:00:00 2001
From: jucallme <jucallme@gmail.com>
Date: Wed, 18 Apr 2012 12:08:43 -0400
Subject: [PATCH] fix some wording and white space

---
 commerce_coupon.module                     |    8 ++++++++
 includes/commerce_coupon.checkout_pane.inc |   11 +++++++++++
 includes/commerce_coupon_ui.settings.inc   |    7 +++++++
 3 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/commerce_coupon.module b/commerce_coupon.module
index f86ffbe..09c10f8 100644
--- a/commerce_coupon.module
+++ b/commerce_coupon.module
@@ -1117,3 +1117,11 @@ function commerce_coupon_field_widget_form(&$form, &$form_state, $field, $instan
 
   return $element;
 }
+
+/**
+ * Returns the number of coupons currently attached to the order.
+ */
+function commerce_coupon_number_of_coupons_against_order($order) {
+  $coupons = commerce_coupon_get_coupons_by_order($order->order_id);
+  return count($coupons);
+}
diff --git a/includes/commerce_coupon.checkout_pane.inc b/includes/commerce_coupon.checkout_pane.inc
index f77caa4..2184c61 100644
--- a/includes/commerce_coupon.checkout_pane.inc
+++ b/includes/commerce_coupon.checkout_pane.inc
@@ -39,6 +39,17 @@ function commerce_coupon_pane_checkout_form_validate($form, &$form_state, $check
     return TRUE;
   }
 
+  // Validates limits
+  $order  = $form_state['values']['order'];
+  if (variable_get('commerce_coupon_limit_numbers', -1) > 0 &&
+    commerce_coupon_number_of_coupons_against_order($order) >= variable_get('commerce_coupon_limit_numbers', -1)) {
+
+    $message = t('You can only add a maximum of @number coupons to your order',
+      array('@number' => variable_get('commerce_coupon_limit_numbers', -1)));
+    form_set_error('commerce_coupon][coupon_code', $message);
+    return FALSE;
+  }
+
   // Valdiate the coupon code
   if (commerce_coupon_code_is_valid($form_state['values']['commerce_coupon']['coupon_code'], $order)) {
     return TRUE;
diff --git a/includes/commerce_coupon_ui.settings.inc b/includes/commerce_coupon_ui.settings.inc
index 3c5ddb3..173dcb2 100644
--- a/includes/commerce_coupon_ui.settings.inc
+++ b/includes/commerce_coupon_ui.settings.inc
@@ -43,6 +43,13 @@ function commerce_coupon_ui_settings_form($form, &$form_state) {
     );
   }
 
+  $form['commerce_coupon_limit_numbers'] = array(
+    '#type' => 'textfield',
+    '#title' => t('Limit number of coupons per order'),
+    '#default_value' => variable_get('commerce_coupon_limit_numbers', -1),
+    '#description' => t('Limits the number of coupons that can be used against an order in the cart, (-1 indicates no limit).'),
+  );
+
   return system_settings_form($form);
 }
 
-- 
1.7.5.4