// Copyright (c) 2012 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 <string>

#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "content/public/browser/notification_service.h"
#include "content/public/test/test_browser_context.h"
#include "content/public/test/test_browser_thread.h"
#include "device/bluetooth/bluetooth_uuid.h"
#include "device/bluetooth/test/mock_bluetooth_adapter.h"
#include "extensions/browser/api/bluetooth/bluetooth_event_router.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extensions_test.h"
#include "extensions/common/api/bluetooth.h"
#include "extensions/common/extension_builder.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

const char kTestExtensionId[] = "test extension id";
const device::BluetoothUUID kAudioProfileUuid("1234");
const device::BluetoothUUID kHealthProfileUuid("4321");

MATCHER_P(IsFilterEqual, a, "") {
  return arg.Equals(*a);
}
}  // namespace

namespace extensions {

namespace bluetooth = core_api::bluetooth;

class BluetoothEventRouterTest : public ExtensionsTest {
 public:
  BluetoothEventRouterTest()
      : ui_thread_(content::BrowserThread::UI, &message_loop_),
        mock_adapter_(new testing::StrictMock<device::MockBluetoothAdapter>()),
        notification_service_(content::NotificationService::Create()),
        router_(new BluetoothEventRouter(browser_context())) {
    router_->SetAdapterForTest(mock_adapter_);
  }

  void TearDown() override {
    // It's important to destroy the router before the browser context keyed
    // services so it removes itself as an ExtensionRegistry observer.
    router_.reset(NULL);
    ExtensionsTest::TearDown();
  }

 protected:
  base::MessageLoopForUI message_loop_;
  // Note: |ui_thread_| must be declared before |router_|.
  content::TestBrowserThread ui_thread_;
  testing::StrictMock<device::MockBluetoothAdapter>* mock_adapter_;
  scoped_ptr<content::NotificationService> notification_service_;
  scoped_ptr<BluetoothEventRouter> router_;
};

TEST_F(BluetoothEventRouterTest, BluetoothEventListener) {
  router_->OnListenerAdded();
  EXPECT_CALL(*mock_adapter_, RemoveObserver(testing::_)).Times(1);
  router_->OnListenerRemoved();
}

TEST_F(BluetoothEventRouterTest, MultipleBluetoothEventListeners) {
  router_->OnListenerAdded();
  router_->OnListenerAdded();
  router_->OnListenerAdded();
  router_->OnListenerRemoved();
  router_->OnListenerRemoved();
  EXPECT_CALL(*mock_adapter_, RemoveObserver(testing::_)).Times(1);
  router_->OnListenerRemoved();
}

TEST_F(BluetoothEventRouterTest, UnloadExtension) {
  scoped_refptr<const Extension> extension =
      ExtensionBuilder()
          .SetManifest(DictionaryBuilder()
              .Set("name", "BT event router test")
              .Set("version", "1.0")
              .Set("manifest_version", 2))
          .SetID(kTestExtensionId)
          .Build();

  ExtensionRegistry::Get(browser_context())->TriggerOnUnloaded(
      extension.get(), UnloadedExtensionInfo::REASON_DISABLE);

  EXPECT_CALL(*mock_adapter_, RemoveObserver(testing::_)).Times(1);
}

// This test check that calling SetDiscoveryFilter before StartDiscoverySession
// for given extension will start session with proper filter.
TEST_F(BluetoothEventRouterTest, SetDiscoveryFilter) {
  scoped_ptr<device::BluetoothDiscoveryFilter> discovery_filter(
      new device::BluetoothDiscoveryFilter(
          device::BluetoothDiscoveryFilter::Transport::TRANSPORT_LE));

  discovery_filter->SetRSSI(-80);
  discovery_filter->AddUUID(device::BluetoothUUID("1000"));

  device::BluetoothDiscoveryFilter df(
      device::BluetoothDiscoveryFilter::Transport::TRANSPORT_LE);
  df.CopyFrom(*discovery_filter);

  router_->SetDiscoveryFilter(discovery_filter.Pass(), mock_adapter_,
                              kTestExtensionId, base::Bind(&base::DoNothing),
                              base::Bind(&base::DoNothing));

  EXPECT_CALL(*mock_adapter_, StartDiscoverySessionWithFilterRaw(
                                  testing::Pointee(IsFilterEqual(&df)),
                                  testing::_, testing::_)).Times(1);

  router_->StartDiscoverySession(mock_adapter_, kTestExtensionId,
                                 base::Bind(&base::DoNothing),
                                 base::Bind(&base::DoNothing));

  EXPECT_CALL(*mock_adapter_, RemoveObserver(testing::_)).Times(1);
}

}  // namespace extensions