// 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 "base/command_line.h"
#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "base/prefs/pref_service_builder.h"
#include "base/prefs/testing_pref_store.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profiles_state.h"
#include "chrome/browser/ui/app_list/app_list_service.h"
#include "chrome/browser/ui/app_list/app_list_service_impl.h"
#include "chrome/browser/ui/app_list/test/fake_keep_alive_service.h"
#include "chrome/browser/ui/app_list/test/fake_profile.h"
#include "chrome/browser/ui/app_list/test/fake_profile_store.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "testing/gtest/include/gtest/gtest.h"

class TestingAppListServiceImpl : public AppListServiceImpl {
 public:
  TestingAppListServiceImpl(const CommandLine& command_line,
                            PrefService* local_state,
                            scoped_ptr<ProfileStore> profile_store,
                            scoped_ptr<KeepAliveService> keep_alive_service)
      : AppListServiceImpl(command_line,
                           local_state,
                           profile_store.Pass(),
                           keep_alive_service.Pass()),
        showing_for_profile_(NULL) {
  }

  Profile* showing_for_profile() const {
    return showing_for_profile_;
  }

  void HandleCommandLineFlags(Profile* profile) {
    AppListServiceImpl::HandleCommandLineFlags(profile);
  }

  virtual void CreateForProfile(Profile* requested_profile) OVERRIDE {
  }

  virtual void ShowForProfile(Profile* requested_profile) OVERRIDE {
    showing_for_profile_ = requested_profile;
  }

  virtual void DismissAppList() OVERRIDE {
    showing_for_profile_ = NULL;
  }

  virtual bool IsAppListVisible() const OVERRIDE {
    return !!showing_for_profile_;
  }

  virtual gfx::NativeWindow GetAppListWindow() OVERRIDE {
    return NULL;
  }

  virtual AppListControllerDelegate* CreateControllerDelegate() OVERRIDE {
    return NULL;
  }

 private:
  Profile* showing_for_profile_;
};

class AppListServiceUnitTest : public testing::Test {
 public:
  virtual void SetUp() OVERRIDE {
    SetupWithCommandLine(CommandLine(CommandLine::NO_PROGRAM));
  }

  void SetupWithCommandLine(const CommandLine& command_line) {
    user_data_dir_ = base::FilePath(FILE_PATH_LITERAL("udd"));
    profile1_.reset(
        new FakeProfile("p1", user_data_dir_.AppendASCII("profile1")));
    profile2_.reset(
        new FakeProfile("p2", user_data_dir_.AppendASCII("profile2")));
    PrefRegistrySimple* pref_registry = new PrefRegistrySimple;

    AppListService::RegisterPrefs(pref_registry);
    profiles::RegisterPrefs(pref_registry);

    PrefServiceBuilder builder;
    builder.WithUserPrefs(new TestingPrefStore);
    local_state_.reset(builder.Create(pref_registry));

    keep_alive_service_ = new FakeKeepAliveService;
    profile_store_ = new FakeProfileStore(user_data_dir_);
    service_.reset(new TestingAppListServiceImpl(
        command_line,
        local_state_.get(),
        scoped_ptr<ProfileStore>(profile_store_),
        scoped_ptr<KeepAliveService>(keep_alive_service_)));
  }

  base::FilePath user_data_dir_;
  scoped_ptr<PrefService> local_state_;
  FakeProfileStore* profile_store_;
  FakeKeepAliveService* keep_alive_service_;
  scoped_ptr<TestingAppListServiceImpl> service_;
  scoped_ptr<FakeProfile> profile1_;
  scoped_ptr<FakeProfile> profile2_;
};

TEST_F(AppListServiceUnitTest, EnablingStateIsPersisted) {
  EXPECT_FALSE(local_state_->GetBoolean(prefs::kAppLauncherHasBeenEnabled));
  service_->EnableAppList(profile1_.get());
  EXPECT_TRUE(local_state_->GetBoolean(prefs::kAppLauncherHasBeenEnabled));
  EXPECT_EQ(profile1_->GetPath(), user_data_dir_.Append(
      local_state_->GetFilePath(prefs::kAppListProfile)));
}

TEST_F(AppListServiceUnitTest, ShowingForProfileLoadsAProfile) {
  profile_store_->LoadProfile(profile1_.get());
  service_->EnableAppList(profile1_.get());
  service_->Show();
  EXPECT_EQ(profile1_.get(), service_->showing_for_profile());
  EXPECT_TRUE(service_->IsAppListVisible());
}

TEST_F(AppListServiceUnitTest, RemovedProfileResetsToInitialProfile) {
  service_->EnableAppList(profile1_.get());
  profile_store_->RemoveProfile(profile1_.get());
  base::FilePath initial_profile_path =
      user_data_dir_.AppendASCII(chrome::kInitialProfile);
  EXPECT_EQ(initial_profile_path,
            service_->GetProfilePath(profile_store_->GetUserDataDir()));
}

TEST_F(AppListServiceUnitTest,
       RemovedProfileResetsToLastUsedProfileIfExists) {
  local_state_->SetString(prefs::kProfileLastUsed, "last-used");
  service_->EnableAppList(profile1_.get());
  profile_store_->RemoveProfile(profile1_.get());
  base::FilePath last_used_profile_path =
      user_data_dir_.AppendASCII("last-used");
  EXPECT_EQ(last_used_profile_path,
            service_->GetProfilePath(profile_store_->GetUserDataDir()));
}

TEST_F(AppListServiceUnitTest, SwitchingProfilesPersists) {
  profile_store_->LoadProfile(profile1_.get());
  profile_store_->LoadProfile(profile2_.get());
  service_->EnableAppList(profile1_.get());
  service_->SetProfilePath(profile2_->GetPath());
  service_->Show();
  EXPECT_EQ(profile2_.get(), service_->showing_for_profile());
  EXPECT_EQ(profile2_->GetPath(),
            service_->GetProfilePath(profile_store_->GetUserDataDir()));
  service_->SetProfilePath(profile1_->GetPath());
  EXPECT_EQ(profile1_->GetPath(),
            service_->GetProfilePath(profile_store_->GetUserDataDir()));
}

TEST_F(AppListServiceUnitTest, EnableViaCommandLineFlag) {
  CommandLine command_line(CommandLine::NO_PROGRAM);
  command_line.AppendSwitch(switches::kEnableAppList);
  SetupWithCommandLine(command_line);
  service_->HandleCommandLineFlags(profile1_.get());
  EXPECT_TRUE(local_state_->GetBoolean(prefs::kAppLauncherHasBeenEnabled));
}

TEST_F(AppListServiceUnitTest, DisableViaCommandLineFlag) {
  CommandLine command_line(CommandLine::NO_PROGRAM);
  command_line.AppendSwitch(switches::kResetAppListInstallState);
  SetupWithCommandLine(command_line);
  service_->HandleCommandLineFlags(profile1_.get());
  EXPECT_FALSE(local_state_->GetBoolean(prefs::kAppLauncherHasBeenEnabled));
}