Move Differential to modular mail commands

Summary: Ref T7199. Convert Differential to modern modular commands.

Test Plan: Used `bin/mail receive-test` to send command and comment mail to Differential.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T7199

Differential Revision: https://secure.phabricator.com/D12239

src/__phutil_library_map__.php

@@ -287,6 +287,7 @@ phutil_register_library_map(array(
     'DatabaseConfigurationProvider' => 'infrastructure/storage/configuration/DatabaseConfigurationProvider.php',
     'DefaultDatabaseConfigurationProvider' => 'infrastructure/storage/configuration/DefaultDatabaseConfigurationProvider.php',
     'DifferentialAction' => 'applications/differential/constants/DifferentialAction.php',
+    'DifferentialActionEmailCommand' => 'applications/differential/command/DifferentialActionEmailCommand.php',
     'DifferentialActionMenuEventListener' => 'applications/differential/event/DifferentialActionMenuEventListener.php',
     'DifferentialAddCommentView' => 'applications/differential/view/DifferentialAddCommentView.php',
     'DifferentialAffectedPath' => 'applications/differential/storage/DifferentialAffectedPath.php',
@@ -3459,6 +3460,7 @@ phutil_register_library_map(array(
     'DarkConsoleServicesPlugin' => 'DarkConsolePlugin',
     'DarkConsoleXHProfPlugin' => 'DarkConsolePlugin',
     'DefaultDatabaseConfigurationProvider' => 'DatabaseConfigurationProvider',
+    'DifferentialActionEmailCommand' => 'MetaMTAEmailTransactionCommand',
     'DifferentialActionMenuEventListener' => 'PhabricatorEventListener',
     'DifferentialAddCommentView' => 'AphrontView',
     'DifferentialAffectedPath' => 'DifferentialDAO',
@@ -3578,7 +3580,7 @@ phutil_register_library_map(array(
     'DifferentialQueryConduitAPIMethod' => 'DifferentialConduitAPIMethod',
     'DifferentialQueryDiffsConduitAPIMethod' => 'DifferentialConduitAPIMethod',
     'DifferentialRemarkupRule' => 'PhabricatorObjectRemarkupRule',
-    'DifferentialReplyHandler' => 'PhabricatorMailReplyHandler',
+    'DifferentialReplyHandler' => 'PhabricatorApplicationTransactionReplyHandler',
     'DifferentialRepositoryField' => 'DifferentialCoreCustomField',
     'DifferentialRepositoryLookup' => 'Phobject',
     'DifferentialRequiredSignaturesField' => 'DifferentialCoreCustomField',

src/applications/differential/command/DifferentialActionEmailCommand.php

@@ -0,0 +1,92 @@
+<?php
+
+final class DifferentialActionEmailCommand
+  extends MetaMTAEmailTransactionCommand {
+
+  private $command;
+  private $action;
+  private $aliases;
+
+  public function getCommand() {
+    return $this->command;
+  }
+
+  private function setCommand($command) {
+    $this->command = $command;
+    return $this;
+  }
+
+  private function setAction($action) {
+    $this->action = $action;
+    return $this;
+  }
+
+  private function getAction() {
+    return $this->action;
+  }
+
+  private function setCommandAliases(array $aliases) {
+    $this->aliases = $aliases;
+    return $this;
+  }
+
+  public function getCommandAliases() {
+    return $this->aliases;
+  }
+
+  public function getCommandObjects() {
+    $actions = array(
+      DifferentialAction::ACTION_REJECT => 'request',
+      DifferentialAction::ACTION_ABANDON => 'abandon',
+      DifferentialAction::ACTION_RECLAIM => 'reclaim',
+      DifferentialAction::ACTION_RESIGN => 'resign',
+      DifferentialAction::ACTION_RETHINK => 'rethink',
+      DifferentialAction::ACTION_CLAIM => 'commandeer',
+    );
+
+    if (PhabricatorEnv::getEnvConfig('differential.enable-email-accept')) {
+      $actions[DifferentialAction::ACTION_ACCEPT] = 'accept';
+    }
+
+    $aliases = array(
+      DifferentialAction::ACTION_REJECT => array('reject'),
+      DifferentialAction::ACTION_CLAIM => array('claim'),
+    );
+
+    $objects = array();
+    foreach ($actions as $action => $keyword) {
+      $object = id(new DifferentialActionEmailCommand())
+        ->setCommand($keyword)
+        ->setAction($action);
+
+      if (isset($aliases[$action])) {
+        $object->setCommandAliases($aliases[$action]);
+      }
+
+      $objects[] = $object;
+    }
+
+    return $objects;
+  }
+
+  public function isCommandSupportedForObject(
+    PhabricatorApplicationTransactionInterface $object) {
+    return ($object instanceof DifferentialRevision);
+  }
+
+  public function buildTransactions(
+    PhabricatorUser $viewer,
+    PhabricatorApplicationTransactionInterface $object,
+    PhabricatorMetaMTAReceivedMail $mail,
+    $command,
+    array $argv) {
+    $xactions = array();
+
+    $xactions[] = $object->getApplicationTransactionTemplate()
+      ->setTransactionType(DifferentialTransaction::TYPE_ACTION)
+      ->setNewValue($this->getAction());
+
+    return $xactions;
+  }
+
+}

src/applications/differential/mail/DifferentialReplyHandler.php

@@ -1,6 +1,7 @@
 <?php
 
-final class DifferentialReplyHandler extends PhabricatorMailReplyHandler {
+final class DifferentialReplyHandler
+  extends PhabricatorApplicationTransactionReplyHandler {
 
   public function validateMailReceiver($mail_receiver) {
     if (!($mail_receiver instanceof DifferentialRevision)) {
@@ -8,100 +9,8 @@ final class DifferentialReplyHandler extends PhabricatorMailReplyHandler {
     }
   }
 
-  public function getPrivateReplyHandlerEmailAddress(
-    PhabricatorObjectHandle $handle) {
-    return $this->getDefaultPrivateReplyHandlerEmailAddress($handle, 'D');
-  }
-
-  public function getPublicReplyHandlerEmailAddress() {
-    return $this->getDefaultPublicReplyHandlerEmailAddress('D');
-  }
-
-  public function getSupportedCommands() {
-    $actions = array(
-      DifferentialAction::ACTION_COMMENT,
-      DifferentialAction::ACTION_REJECT,
-      DifferentialAction::ACTION_ABANDON,
-      DifferentialAction::ACTION_RECLAIM,
-      DifferentialAction::ACTION_RESIGN,
-      DifferentialAction::ACTION_RETHINK,
-      'unsubscribe',
-    );
-
-    if (PhabricatorEnv::getEnvConfig('differential.enable-email-accept')) {
-      $actions[] = DifferentialAction::ACTION_ACCEPT;
-    }
-
-    return $actions;
-  }
-
-  protected function receiveEmail(PhabricatorMetaMTAReceivedMail $mail) {
-    $revision = $this->getMailReceiver();
-    $viewer = $this->getActor();
-
-    $body_data = $mail->parseBody();
-    $body = $body_data['body'];
-    $body = $this->enhanceBodyWithAttachments($body, $mail->getAttachments());
-
-    $xactions = array();
-    $content_source = PhabricatorContentSource::newForSource(
-      PhabricatorContentSource::SOURCE_EMAIL,
-      array(
-        'id' => $mail->getID(),
-      ));
-
-    $template = id(new DifferentialTransaction());
-
-    $commands = $body_data['commands'];
-    foreach ($commands as $command_argv) {
-      $command = head($command_argv);
-      switch ($command) {
-        case 'unsubscribe':
-          $xactions[] = id(clone $template)
-            ->setTransactionType(PhabricatorTransactions::TYPE_SUBSCRIBERS)
-            ->setNewValue(
-              array(
-                '-' => array($viewer->getPHID()),
-              ));
-          break;
-        case DifferentialAction::ACTION_ACCEPT:
-          $accept_key = 'differential.enable-email-accept';
-          $can_accept = PhabricatorEnv::getEnvConfig($accept_key);
-          if (!$can_accept) {
-            throw new Exception(
-              pht(
-                'You can not !accept revisions over email because '.
-                'Differential is configured to disallow this.'));
-          }
-          // Fall through...
-        case DifferentialAction::ACTION_REJECT:
-        case DifferentialAction::ACTION_ABANDON:
-        case DifferentialAction::ACTION_RECLAIM:
-        case DifferentialAction::ACTION_RESIGN:
-        case DifferentialAction::ACTION_RETHINK:
-        case DifferentialAction::ACTION_CLAIM:
-        case DifferentialAction::ACTION_REOPEN:
-          $xactions[] = id(clone $template)
-            ->setTransactionType(DifferentialTransaction::TYPE_ACTION)
-            ->setNewValue($command);
-          break;
-      }
-    }
-
-    $xactions[] = id(clone $template)
-      ->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
-      ->attachComment(
-        id(new DifferentialTransactionComment())
-          ->setContent($body));
-
-    $editor = id(new DifferentialTransactionEditor())
-      ->setActor($viewer)
-      ->setContentSource($content_source)
-      ->setExcludeMailRecipientPHIDs($this->getExcludeMailRecipientPHIDs())
-      ->setContinueOnMissingFields(true)
-      ->setContinueOnNoEffect(true);
-
-    $editor->applyTransactions($revision, $xactions);
+  public function getObjectPrefix() {
+    return 'D';
   }
 
 }