show if event is full

fulcrm_shoppingcart.module

@@ -306,12 +306,33 @@ function fulcrm_shoppingcart_buy_eventbookingtype_form_submit( $form, &$form_sta
 }
 
 function fulcrm_shoppingcart_buy_eventbookingtype_form( $form, &$form_state, $person, $eventbookingtype, $product ) {
+    $form = array();
+    $event_id = $eventbookingtype[ 'event' ][ 'id' ];
+
+    $capacity = null;
+    $count = null;
+    $api_data = fulcrm_apiv2_GET( 'event/' . $event_id . '/' );
+    if ( $api_data[ 'success' ] )
+        $capacity = $api_data[ 'data' ][ 'capacity' ];
+
+    $api_data = fulcrm_apiv2_GET( 'eventbooking/', $query = array( 'event' => $event_id,
+                                                                   'confirmed__isnull' => 'False',
+                                                                   'cancelled__isnull' => 'True',
+                                                                   ) );
+    if ( $api_data[ 'success' ] )
+        $count = $api_data[ 'data' ][ 'count' ];
+
+    if ( !is_null( $capacity ) && !is_null( $count ) ) {
+        if ( $count >= $capacity ) {
+            drupal_set_message( t('Sorry, this event must be sold out.  There are no more tickets available.'), 'error' );
+            return $form;
+        }
+    }
+
     $form_state[ 'fulcrm_shoppingcart' ][ 'person' ] = $person;
     $form_state[ 'fulcrm_shoppingcart' ][ 'eventbookingtype' ] = $eventbookingtype;
     $form_state[ 'fulcrm_shoppingcart' ][ 'product' ] = $product;
 
-    $form = array();
-
     $form[ 'title_event' ] = array( '#type' => 'markup',
                                     '#markup' => '<h1>' . check_plain( $eventbookingtype[ 'event' ][ 'name' ] ) . '</h1>',
                                     );