Support sorting countdowns by end date

Summary: Fixes T5813, while I'm in here...

Test Plan: Sorted stuff by end date.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T5813

Differential Revision: https://secure.phabricator.com/D15657

src/applications/countdown/query/PhabricatorCountdownQuery.php

@@ -74,4 +74,35 @@ final class PhabricatorCountdownQuery
     return 'PhabricatorCountdownApplication';
   }
 
+  public function getBuiltinOrders() {
+    return array(
+      'ending' => array(
+        'vector' => array('-epoch', '-id'),
+        'name' => pht('End Date (Past to Future)'),
+      ),
+      'unending' => array(
+        'vector' => array('epoch', 'id'),
+        'name' => pht('End Date (Future to Past)'),
+      ),
+    ) + parent::getBuiltinOrders();
+  }
+
+  public function getOrderableColumns() {
+    return array(
+      'epoch' => array(
+        'table' => $this->getPrimaryTableAlias(),
+        'column' => 'epoch',
+        'type' => 'int',
+      ),
+    ) + parent::getOrderableColumns();
+  }
+
+  protected function getPagingValueMap($cursor, array $keys) {
+    $countdown = $this->loadCursorObject($cursor);
+    return array(
+      'epoch' => $countdown->getEpoch(),
+      'id' => $countdown->getID(),
+    );
+  }
+
 }

src/applications/countdown/query/PhabricatorCountdownSearchEngine.php

@@ -30,20 +30,18 @@ final class PhabricatorCountdownSearchEngine
   }
 
   protected function buildCustomSearchFields() {
-
     return array(
       id(new PhabricatorUsersSearchField())
         ->setLabel(pht('Authors'))
         ->setKey('authorPHIDs')
         ->setAliases(array('author', 'authors')),
-
       id(new PhabricatorSearchCheckboxesField())
         ->setKey('upcoming')
-          ->setOptions(array(
+        ->setOptions(
+          array(
             'upcoming' => pht('Show only upcoming countdowns.'),
           )),
     );
-
   }
 
   protected function getURI($path) {

src/applications/countdown/storage/PhabricatorCountdown.php

@@ -46,6 +46,14 @@ final class PhabricatorCountdown extends PhabricatorCountdownDAO
         'description' => 'text',
         'mailKey' => 'bytes20',
       ),
+      self::CONFIG_KEY_SCHEMA => array(
+        'key_epoch' => array(
+          'columns' => array('epoch'),
+        ),
+        'key_author' => array(
+          'columns' => array('authorPHID', 'epoch'),
+        ),
+      ),
     ) + parent::getConfiguration();
   }