Move Slowvote vote types to a separate object

Summary: Ref T13682. Extract Slowvote vote types to a separate object, to prepare for turning them into API-friendly string constants.

Test Plan: Created, edited, and voted in Slowvote polls. Grepped for affected constants.

Maniphest Tasks: T13682

Differential Revision: https://secure.phabricator.com/D21845

src/__phutil_library_map__.php

@@ -4859,6 +4859,7 @@ phutil_register_library_map(array(
     'PhabricatorSlowvoteTransactionQuery' => 'applications/slowvote/query/PhabricatorSlowvoteTransactionQuery.php',
     'PhabricatorSlowvoteTransactionType' => 'applications/slowvote/xaction/PhabricatorSlowvoteTransactionType.php',
     'PhabricatorSlowvoteVoteController' => 'applications/slowvote/controller/PhabricatorSlowvoteVoteController.php',
+    'PhabricatorSlowvoteVotingMethodTransaction' => 'applications/slowvote/xaction/PhabricatorSlowvoteVotingMethodTransaction.php',
     'PhabricatorSlug' => 'infrastructure/util/PhabricatorSlug.php',
     'PhabricatorSlugTestCase' => 'infrastructure/util/__tests__/PhabricatorSlugTestCase.php',
     'PhabricatorSourceCodeView' => 'view/layout/PhabricatorSourceCodeView.php',
@@ -5873,6 +5874,7 @@ phutil_register_library_map(array(
     'SlowvoteEmbedView' => 'applications/slowvote/view/SlowvoteEmbedView.php',
     'SlowvoteInfoConduitAPIMethod' => 'applications/slowvote/conduit/SlowvoteInfoConduitAPIMethod.php',
     'SlowvotePollResponseVisibility' => 'applications/slowvote/constants/SlowvotePollResponseVisibility.php',
+    'SlowvotePollVotingMethod' => 'applications/slowvote/constants/SlowvotePollVotingMethod.php',
     'SlowvoteRemarkupRule' => 'applications/slowvote/remarkup/SlowvoteRemarkupRule.php',
     'SlowvoteSearchConduitAPIMethod' => 'applications/slowvote/conduit/SlowvoteSearchConduitAPIMethod.php',
     'SubscriptionListDialogBuilder' => 'applications/subscriptions/view/SubscriptionListDialogBuilder.php',
@@ -11573,6 +11575,7 @@ phutil_register_library_map(array(
     'PhabricatorSlowvoteTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
     'PhabricatorSlowvoteTransactionType' => 'PhabricatorModularTransactionType',
     'PhabricatorSlowvoteVoteController' => 'PhabricatorSlowvoteController',
+    'PhabricatorSlowvoteVotingMethodTransaction' => 'PhabricatorSlowvoteTransactionType',
     'PhabricatorSlug' => 'Phobject',
     'PhabricatorSlugTestCase' => 'PhabricatorTestCase',
     'PhabricatorSourceCodeView' => 'AphrontView',
@@ -12775,6 +12778,7 @@ phutil_register_library_map(array(
     'SlowvoteEmbedView' => 'AphrontView',
     'SlowvoteInfoConduitAPIMethod' => 'SlowvoteConduitAPIMethod',
     'SlowvotePollResponseVisibility' => 'Phobject',
+    'SlowvotePollVotingMethod' => 'Phobject',
     'SlowvoteRemarkupRule' => 'PhabricatorObjectRemarkupRule',
     'SlowvoteSearchConduitAPIMethod' => 'PhabricatorSearchEngineAPIMethod',
     'SubscriptionListDialogBuilder' => 'Phobject',

src/applications/slowvote/constants/SlowvotePollVotingMethod.php

@@ -0,0 +1,70 @@
+<?php
+
+final class SlowvotePollVotingMethod
+  extends Phobject {
+
+  const METHOD_PLURALITY = 0;
+  const METHOD_APPROVAL = 1;
+
+  private $key;
+
+  public static function newVotingMethodObject($key) {
+    $object = new self();
+    $object->key = $key;
+    return $object;
+  }
+
+  public function getKey() {
+    return $this->key;
+  }
+
+  public static function getAll() {
+    $map = self::getMap();
+
+    $result = array();
+    foreach ($map as $key => $spec) {
+      $result[$key] = self::newVotingMethodObject($key);
+    }
+
+    return $result;
+  }
+
+  public function getName() {
+    $name = $this->getProperty('name');
+
+    if ($name === null) {
+      $name = pht('Unknown ("%s")', $this->getKey());
+    }
+
+    return $name;
+  }
+
+  public function getNameForEdit() {
+    $name = $this->getProperty('name.edit');
+
+    if ($name === null) {
+      $name = pht('Unknown ("%s")', $this->getKey());
+    }
+
+    return $name;
+  }
+
+  private function getProperty($key, $default = null) {
+    $spec = idx(self::getMap(), $this->getKey(), array());
+    return idx($spec, $key, $default);
+  }
+
+  private static function getMap() {
+    return array(
+      self::METHOD_PLURALITY => array(
+        'name' => pht('Plurality'),
+        'name.edit' => pht('Plurality (Single Choice)'),
+      ),
+      self::METHOD_APPROVAL => array(
+        'name' => pht('Approval'),
+        'name.edit' => pht('Approval (Multiple Choice)'),
+      ),
+    );
+  }
+
+}

src/applications/slowvote/controller/PhabricatorSlowvoteEditController.php

@@ -189,12 +189,19 @@ final class PhabricatorSlowvoteEditController
       }
     }
 
-    $poll_type_options = array(
-      PhabricatorSlowvotePoll::METHOD_PLURALITY =>
-        pht('Plurality (Single Choice)'),
-      PhabricatorSlowvotePoll::METHOD_APPROVAL  =>
-        pht('Approval (Multiple Choice)'),
-    );
+    $vote_type_map = SlowvotePollVotingMethod::getAll();
+    $vote_type_options = mpull($vote_type_map, 'getNameForEdit');
+
+    $method = $poll->getMethod();
+    if (!isset($vote_type_options[$method])) {
+      $method_object =
+        SlowvotePollVotingMethod::newVotingMethodObject(
+          $method);
+
+      $vote_type_options = array(
+        $method => $method_object->getNameForEdit(),
+      ) + $vote_type_options;
+    }
 
     $response_type_map = SlowvotePollResponseVisibility::getAll();
     $response_type_options = mpull($response_type_map, 'getNameForEdit');
@@ -216,12 +223,12 @@ final class PhabricatorSlowvoteEditController
           ->setLabel(pht('Vote Type'))
           ->setName('method')
           ->setValue($poll->getMethod())
-          ->setOptions($poll_type_options));
+          ->setOptions($vote_type_options));
     } else {
       $form->appendChild(
         id(new AphrontFormStaticControl())
           ->setLabel(pht('Vote Type'))
-          ->setValue(idx($poll_type_options, $poll->getMethod())));
+          ->setValue(idx($vote_type_options, $poll->getMethod())));
     }
 
     if ($is_new) {

src/applications/slowvote/controller/PhabricatorSlowvoteVoteController.php

@@ -35,7 +35,7 @@ final class PhabricatorSlowvoteVoteController
     $votes = array_fuse($votes);
 
     $method = $poll->getMethod();
-    $is_plurality = ($method == PhabricatorSlowvotePoll::METHOD_PLURALITY);
+    $is_plurality = ($method == SlowvotePollVotingMethod::METHOD_PLURALITY);
 
     if (!$votes) {
       if ($is_plurality) {

src/applications/slowvote/storage/PhabricatorSlowvotePoll.php

@@ -13,9 +13,6 @@ final class PhabricatorSlowvotePoll
     PhabricatorSpacesInterface,
     PhabricatorConduitResultInterface {
 
-  const METHOD_PLURALITY  = 0;
-  const METHOD_APPROVAL   = 1;
-
   protected $question;
   protected $description;
   protected $authorPHID;
@@ -40,11 +37,13 @@ final class PhabricatorSlowvotePoll
       PhabricatorSlowvoteDefaultViewCapability::CAPABILITY);
 
     $default_responses = SlowvotePollResponseVisibility::RESPONSES_VISIBLE;
+    $default_method = SlowvotePollVotingMethod::METHOD_PLURALITY;
 
     return id(new PhabricatorSlowvotePoll())
       ->setAuthorPHID($actor->getPHID())
       ->setViewPolicy($view_policy)
       ->setSpacePHID($actor->getDefaultSpacePHID())
+      ->setMethod($default_method)
       ->setResponseVisibility($default_responses);
   }
 

src/applications/slowvote/view/SlowvoteEmbedView.php

@@ -224,8 +224,8 @@ final class SlowvoteEmbedView extends AphrontView {
 
   private function renderControl(PhabricatorSlowvoteOption $option, $selected) {
     $types = array(
-      PhabricatorSlowvotePoll::METHOD_PLURALITY => 'radio',
-      PhabricatorSlowvotePoll::METHOD_APPROVAL => 'checkbox',
+      SlowvotePollVotingMethod::METHOD_PLURALITY => 'radio',
+      SlowvotePollVotingMethod::METHOD_APPROVAL => 'checkbox',
     );
 
     $closed = $this->getPoll()->getIsClosed();
@@ -302,10 +302,10 @@ final class SlowvoteEmbedView extends AphrontView {
     $percent = sprintf('%d%%', $count ? 100 * $choices / $count : 0);
 
     switch ($poll->getMethod()) {
-      case PhabricatorSlowvotePoll::METHOD_PLURALITY:
+      case SlowvotePollVotingMethod::METHOD_PLURALITY:
         $status = pht('%s (%d / %d)', $percent, $choices, $count);
         break;
-      case PhabricatorSlowvotePoll::METHOD_APPROVAL:
+      case SlowvotePollVotingMethod::METHOD_APPROVAL:
         $status = pht('%s Approval (%d / %d)', $percent, $choices, $count);
         break;
     }

src/applications/slowvote/xaction/PhabricatorSlowvoteVotingMethodTransaction.php

@@ -0,0 +1,55 @@
+<?php
+
+final class PhabricatorSlowvoteVotingMethodTransaction
+  extends PhabricatorSlowvoteTransactionType {
+
+  const TRANSACTIONTYPE = 'vote:method';
+
+  public function generateOldValue($object) {
+    return (string)$object->getMethod();
+  }
+
+  public function generateNewValue($object, $value) {
+    return (string)$value;
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setMethod($value);
+  }
+
+  public function getTitle() {
+    $old_name = $this->getOldVotingMethodObject()->getName();
+    $new_name = $this->getNewVotingMethodObject()->getName();
+
+    return pht(
+      '%s changed the voting method from %s to %s.',
+      $this->renderAuthor(),
+      $this->renderValue($old_name),
+      $this->renderValue($new_name));
+  }
+
+  public function getTitleForFeed() {
+    $old_name = $this->getOldVotingMethodObject()->getName();
+    $new_name = $this->getNewVotingMethodObject()->getName();
+
+    return pht(
+      '%s changed the voting method of %s from %s to %s.',
+        $this->renderAuthor(),
+        $this->renderObject(),
+        $this->renderValue($old_name),
+        $this->renderValue($new_name));
+  }
+
+  private function getOldVotingMethodObject() {
+    return $this->newVotingMethodObject($this->getOldValue());
+  }
+
+  private function getNewVotingMethodObject() {
+    return $this->newVotingMethodObject($this->getNewValue());
+  }
+
+  private function newVotingMethodObject($value) {
+    return SlowvotePollVotingMethod::newVotingMethodObject($value);
+  }
+
+}