From 9f817b6a30aa094135d13834ef67af369a416248 Mon Sep 17 00:00:00 2001
From: Michael Nielson <michael@opensourcery.com>
Date: Sat, 14 Jul 2012 22:49:41 -0700
Subject: [PATCH] Added remaining uses views handler.

---
 commerce_coupon.info                               |    1 +
 includes/views/commerce_coupon.views.inc           |    7 +++++
 ..._coupon_handler_field_coupon_remaining_uses.inc |   30 ++++++++++++++++++++
 3 files changed, 38 insertions(+)
 create mode 100644 includes/views/handlers/commerce_coupon_handler_field_coupon_remaining_uses.inc

diff --git a/commerce_coupon.info b/commerce_coupon.info
index 2e34755..9c022a6 100644
--- a/commerce_coupon.info
+++ b/commerce_coupon.info
@@ -15,4 +15,5 @@ files[] = classes/commerce_coupon_type.inc
 
 ; Views Handler
 files[] = includes/views/handlers/commerce_coupon_handler_field_coupon_granted_amount.inc
+files[] = includes/views/handlers/commerce_coupon_handler_field_coupon_remaining_uses.inc
 files[] = includes/views/handlers/commerce_coupon_handler_field_coupon_operations.inc
diff --git a/includes/views/commerce_coupon.views.inc b/includes/views/commerce_coupon.views.inc
index 3e509b1..f083666 100644
--- a/includes/views/commerce_coupon.views.inc
+++ b/includes/views/commerce_coupon.views.inc
@@ -25,5 +25,12 @@ function commerce_coupon_views_data_alter(&$data) {
         'handler' => 'commerce_coupon_handler_field_coupon_granted_amount',
       ),
     );
+    $data['commerce_coupon']['remaining_uses'] = array(
+      'field' => array(
+        'title' => t('Remaining uses'),
+        'help' => t('Number of remaining times the coupon can be used.'),
+        'handler' => 'commerce_coupon_handler_field_coupon_remaining_uses',
+      ),
+    );
   }
 }
diff --git a/includes/views/handlers/commerce_coupon_handler_field_coupon_remaining_uses.inc b/includes/views/handlers/commerce_coupon_handler_field_coupon_remaining_uses.inc
new file mode 100644
index 0000000..7c82b5b
--- /dev/null
+++ b/includes/views/handlers/commerce_coupon_handler_field_coupon_remaining_uses.inc
@@ -0,0 +1,30 @@
+<?php
+/**
+ * @file
+ * Displays the granted amount of a coupon based in each coupon type conditions.
+ */
+
+class commerce_coupon_handler_field_coupon_remaining_uses extends views_handler_field {
+
+  function construct() {
+    parent::construct();
+
+    $this->additional_fields['coupon_id'] = 'coupon_id';
+
+  }
+
+  function query() {
+    $this->ensure_my_table();
+    $this->add_additional_fields();
+  }
+
+  function render($values) {
+    // Get the coupon id.
+    $coupon_id = $this->get_value($values, 'coupon_id');
+    $times_used = commerce_coupon_get_number_of_uses($coupon_id);
+    $total = $values->field_commerce_coupon_number_of_uses[0]['raw']['value'];
+    // TODO - make sure times_used is never greater than total.
+    return $total-$times_used;
+  }
+
+}
-- 
1.7.9.5