// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ash/session_state_delegate.h"
#include "ash/shell.h"
#include "base/prefs/pref_service.h"
#include "chrome/browser/chromeos/login/login_display_host_impl.h"
#include "chrome/browser/chromeos/login/login_manager_test.h"
#include "chrome/browser/chromeos/login/multi_profile_user_controller.h"
#include "chrome/browser/chromeos/login/startup_utils.h"
#include "chrome/browser/chromeos/login/user_adding_screen.h"
#include "chrome/browser/chromeos/login/user_manager.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "content/public/test/test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"

using namespace testing;

namespace {

const char* kTestUsers[] = {"test-user1@gmail.com",
                            "test-user2@gmail.com",
                            "test-user3@gmail.com"};

}  // anonymous namespace

namespace chromeos {

class UserAddingScreenTest : public LoginManagerTest,
                             public UserAddingScreen::Observer {
 public:
  UserAddingScreenTest() : LoginManagerTest(false),
                           user_adding_started_(0),
                           user_adding_finished_(0) {
  }

  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
    LoginManagerTest::SetUpCommandLine(command_line);
    command_line->AppendSwitch(::switches::kMultiProfiles);
  }

  virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
    LoginManagerTest::SetUpInProcessBrowserTestFixture();
    UserAddingScreen::Get()->AddObserver(this);
  }

  virtual void OnUserAddingFinished() OVERRIDE { ++user_adding_finished_; }

  virtual void OnUserAddingStarted() OVERRIDE { ++user_adding_started_; }

  void SetUserCanLock(User* user, bool can_lock) {
    user->set_can_lock(can_lock);
  }

  int user_adding_started() { return user_adding_started_; }

  int user_adding_finished() { return user_adding_finished_; }

 private:
  int user_adding_started_;
  int user_adding_finished_;

  DISALLOW_COPY_AND_ASSIGN(UserAddingScreenTest);
};

IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, PRE_CancelAdding) {
  RegisterUser(kTestUsers[0]);
  RegisterUser(kTestUsers[1]);
  RegisterUser(kTestUsers[2]);
  StartupUtils::MarkOobeCompleted();
}

IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, CancelAdding) {
  EXPECT_CALL(login_utils(), DoBrowserLaunch(_, _)).Times(1);
  EXPECT_EQ(3u, UserManager::Get()->GetUsers().size());
  EXPECT_EQ(0u, UserManager::Get()->GetLoggedInUsers().size());

  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_LOGIN_PRIMARY,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());

  LoginUser(kTestUsers[0]);
  EXPECT_EQ(1u, UserManager::Get()->GetLoggedInUsers().size());
  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_ACTIVE,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());

  UserAddingScreen::Get()->Start();
  content::RunAllPendingInMessageLoop();
  EXPECT_EQ(1, user_adding_started());
  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_LOGIN_SECONDARY,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());

  UserAddingScreen::Get()->Cancel();
  content::RunAllPendingInMessageLoop();
  EXPECT_EQ(1, user_adding_finished());
  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_ACTIVE,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());

  EXPECT_TRUE(LoginDisplayHostImpl::default_host() == NULL);
  EXPECT_EQ(1u, UserManager::Get()->GetLoggedInUsers().size());
  EXPECT_EQ(kTestUsers[0], UserManager::Get()->GetActiveUser()->email());
}

IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, PRE_AddingSeveralUsers) {
  RegisterUser(kTestUsers[0]);
  RegisterUser(kTestUsers[1]);
  RegisterUser(kTestUsers[2]);
  StartupUtils::MarkOobeCompleted();
}

// Very flaky, see http://crbug.com/368621
IN_PROC_BROWSER_TEST_F(UserAddingScreenTest, DISABLED_AddingSeveralUsers) {
  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_LOGIN_PRIMARY,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());
  EXPECT_CALL(login_utils(), DoBrowserLaunch(_, _)).Times(3);
  LoginUser(kTestUsers[0]);
  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_ACTIVE,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());

  UserManager* user_manager = UserManager::Get();

  for (int i = 1; i < 3; ++i) {
    UserAddingScreen::Get()->Start();
    content::RunAllPendingInMessageLoop();
    EXPECT_EQ(i, user_adding_started());
    EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_LOGIN_SECONDARY,
              ash::Shell::GetInstance()->session_state_delegate()->
                  GetSessionState());
    AddUser(kTestUsers[i]);
    EXPECT_EQ(i, user_adding_finished());
    EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_ACTIVE,
              ash::Shell::GetInstance()->session_state_delegate()->
                  GetSessionState());
    EXPECT_TRUE(LoginDisplayHostImpl::default_host() == NULL);
    ASSERT_EQ(unsigned(i + 1), user_manager->GetLoggedInUsers().size());
  }

  EXPECT_EQ(ash::SessionStateDelegate::SESSION_STATE_ACTIVE,
            ash::Shell::GetInstance()->session_state_delegate()->
                GetSessionState());

  // Now check how unlock policy works for these users.
  PrefService* prefs1 = user_manager->
      GetProfileByUser(user_manager->GetLoggedInUsers()[0])->GetPrefs();
  PrefService* prefs2 = user_manager->
      GetProfileByUser(user_manager->GetLoggedInUsers()[1])->GetPrefs();
  PrefService* prefs3 = user_manager->
      GetProfileByUser(user_manager->GetLoggedInUsers()[2])->GetPrefs();
  ASSERT_TRUE(prefs1 != NULL);
  ASSERT_TRUE(prefs2 != NULL);
  ASSERT_TRUE(prefs3 != NULL);
  prefs1->SetBoolean(prefs::kEnableAutoScreenLock, false);
  prefs2->SetBoolean(prefs::kEnableAutoScreenLock, false);
  prefs3->SetBoolean(prefs::kEnableAutoScreenLock, false);

  // One of the users has the primary-only policy.
  // List of unlock users doesn't depend on kEnableLockScreen preference.
  prefs1->SetBoolean(prefs::kEnableAutoScreenLock, true);
  prefs1->SetString(prefs::kMultiProfileUserBehavior,
                    MultiProfileUserController::kBehaviorPrimaryOnly);
  prefs2->SetString(prefs::kMultiProfileUserBehavior,
                    MultiProfileUserController::kBehaviorUnrestricted);
  prefs3->SetString(prefs::kMultiProfileUserBehavior,
                    MultiProfileUserController::kBehaviorUnrestricted);
  chromeos::UserList unlock_users = user_manager->GetUnlockUsers();
  ASSERT_EQ(1UL, unlock_users.size());
  EXPECT_EQ(kTestUsers[0], unlock_users[0]->email());

  prefs1->SetBoolean(prefs::kEnableAutoScreenLock, false);
  unlock_users = user_manager->GetUnlockUsers();
  ASSERT_EQ(1UL, unlock_users.size());
  EXPECT_EQ(kTestUsers[0], unlock_users[0]->email());

  // If all users have unrestricted policy then anyone can perform unlock.
  prefs1->SetString(prefs::kMultiProfileUserBehavior,
                    MultiProfileUserController::kBehaviorUnrestricted);
  unlock_users = user_manager->GetUnlockUsers();
  ASSERT_EQ(3UL, unlock_users.size());
  for (int i = 0; i < 3; ++i)
    EXPECT_EQ(kTestUsers[i], unlock_users[i]->email());

  // This preference doesn't affect list of unlock users.
  prefs2->SetBoolean(prefs::kEnableAutoScreenLock, true);
  unlock_users = user_manager->GetUnlockUsers();
  ASSERT_EQ(3UL, unlock_users.size());
  for (int i = 0; i < 3; ++i)
    EXPECT_EQ(kTestUsers[i], unlock_users[i]->email());

  // Now one of the users is unable to unlock.
  SetUserCanLock(user_manager->GetLoggedInUsers()[2], false);
  unlock_users = user_manager->GetUnlockUsers();
  ASSERT_EQ(2UL, unlock_users.size());
  for (int i = 0; i < 2; ++i)
    EXPECT_EQ(kTestUsers[i], unlock_users[i]->email());
  SetUserCanLock(user_manager->GetLoggedInUsers()[2], true);

  // Now one of the users has not-allowed policy.
  // In this scenario this user is not allowed in multi-profile session but
  // if that user happened to still be part of multi-profile session it should
  // not be listed on screen lock.
  prefs3->SetString(prefs::kMultiProfileUserBehavior,
                    MultiProfileUserController::kBehaviorNotAllowed);
  unlock_users = user_manager->GetUnlockUsers();
  ASSERT_EQ(2UL, unlock_users.size());
  for (int i = 0; i < 2; ++i)
    EXPECT_EQ(kTestUsers[i], unlock_users[i]->email());
}

}  // namespace chromeos