<?php

final class DifferentialCreateRevisionConduitAPIMethod
  extends DifferentialConduitAPIMethod {

  public function getAPIMethodName() {
    return 'differential.createrevision';
  }

  public function getMethodDescription() {
    return pht('Create a new Differential revision.');
  }

  public function getMethodStatus() {
    return self::METHOD_STATUS_FROZEN;
  }

  public function getMethodStatusDescription() {
    return pht(
      'This method is frozen and will eventually be deprecated. New code '.
      'should use "differential.revision.edit" instead.');
  }

  protected function defineParamTypes() {
    return array(
      // TODO: Arcanist passes this; prevent fatals after D4191 until Conduit
      // version 7 or newer.
      'user'   => 'ignored',
      'diffid' => 'required diffid',
      'fields' => 'required dict',
    );
  }

  protected function defineReturnType() {
    return 'nonempty dict';
  }

  protected function defineErrorTypes() {
    return array(
      'ERR_BAD_DIFF' => pht('Bad diff ID.'),
    );
  }

  protected function execute(ConduitAPIRequest $request) {
    $viewer = $request->getUser();

    $diff = id(new DifferentialDiffQuery())
      ->setViewer($viewer)
      ->withIDs(array($request->getValue('diffid')))
      ->executeOne();
    if (!$diff) {
      throw new ConduitException('ERR_BAD_DIFF');
    }

    $revision = DifferentialRevision::initializeNewRevision($viewer);
    $revision->attachReviewers(array());

    $result = $this->applyFieldEdit(
      $request,
      $revision,
      $diff,
      $request->getValue('fields', array()),
      $message = null);

    $revision_id = $result['object']['id'];

    return array(
      'revisionid'  => $revision_id,
      'uri'         => PhabricatorEnv::getURI('/D'.$revision_id),
    );
  }

}