<?php

/*
 * Copyright 2012 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

final class PhabricatorLogoutController
  extends PhabricatorAuthController {

  public function shouldRequireLogin() {
    return true;
  }

  public function shouldRequireEmailVerification() {
    // Allow unverified users to logout.
    return false;
  }

  public function shouldRequireEnabledUser() {
    // Allow disabled users to logout.
    return false;
  }

  public function processRequest() {
    $request = $this->getRequest();
    $user = $request->getUser();

    if ($request->isFormPost()) {

      $log = PhabricatorUserLog::newLog(
        $user,
        $user,
        PhabricatorUserLog::ACTION_LOGOUT);
      $log->save();

      // Destroy the user's session in the database so logout works even if
      // their cookies have some issues. We'll detect cookie issues when they
      // try to login again and tell them to clear any junk.
      $phsid = $request->getCookie('phsid');
      if ($phsid) {
        $user->destroySession($phsid);
      }
      $request->clearCookie('phsid');

      return id(new AphrontRedirectResponse())
        ->setURI('/login/');
    }

    return id(new AphrontRedirectResponse())->setURI('/');
  }

}