// Copyright 2014 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/macros.h"
#include "base/message_loop/message_loop.h"
#include "base/threading/thread.h"
#include "mojo/application/application_runner_chromium.h"
#include "mojo/public/c/system/main.h"
#include "mojo/public/cpp/application/application_connection.h"
#include "mojo/public/cpp/application/application_delegate.h"
#include "mojo/public/cpp/application/application_impl.h"
#include "mojo/public/cpp/application/interface_factory_impl.h"
#include "mojo/services/html_viewer/blink_platform_impl.h"
#include "mojo/services/html_viewer/html_document_view.h"
#include "mojo/services/html_viewer/webmediaplayer_factory.h"
#include "mojo/services/public/interfaces/content_handler/content_handler.mojom.h"
#include "third_party/WebKit/public/web/WebKit.h"

#if !defined(COMPONENT_BUILD)
#include "base/i18n/icu_util.h"
#include "base/path_service.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_paths.h"
#endif

namespace mojo {

class HTMLViewer;

class ContentHandlerImpl : public InterfaceImpl<ContentHandler> {
 public:
  ContentHandlerImpl(Shell* shell,
                     scoped_refptr<base::MessageLoopProxy> compositor_thread,
                     WebMediaPlayerFactory* web_media_player_factory)
      : shell_(shell),
        compositor_thread_(compositor_thread),
        web_media_player_factory_(web_media_player_factory) {}
  virtual ~ContentHandlerImpl() {}

 private:
  // Overridden from ContentHandler:
  virtual void OnConnect(
      const mojo::String& url,
      URLResponsePtr response,
      InterfaceRequest<ServiceProvider> service_provider_request) override {
    new HTMLDocumentView(response.Pass(),
                         service_provider_request.Pass(),
                         shell_,
                         compositor_thread_,
                         web_media_player_factory_);
  }

  Shell* shell_;
  scoped_refptr<base::MessageLoopProxy> compositor_thread_;
  WebMediaPlayerFactory* web_media_player_factory_;

  DISALLOW_COPY_AND_ASSIGN(ContentHandlerImpl);
};

class HTMLViewer : public ApplicationDelegate,
                   public InterfaceFactory<ContentHandler> {
 public:
  HTMLViewer() : compositor_thread_("compositor thread") {}

  virtual ~HTMLViewer() { blink::shutdown(); }

 private:
  // Overridden from ApplicationDelegate:
  virtual void Initialize(ApplicationImpl* app) override {
    shell_ = app->shell();
    blink_platform_impl_.reset(new BlinkPlatformImpl(app));
    blink::initialize(blink_platform_impl_.get());
#if !defined(COMPONENT_BUILD)
  base::i18n::InitializeICU();

  ui::RegisterPathProvider();

  base::FilePath ui_test_pak_path;
  CHECK(PathService::Get(ui::UI_TEST_PAK, &ui_test_pak_path));
  ui::ResourceBundle::InitSharedInstanceWithPakPath(ui_test_pak_path);
#endif

    compositor_thread_.Start();
    web_media_player_factory_.reset(new WebMediaPlayerFactory(
        compositor_thread_.message_loop_proxy()));
  }

  virtual bool ConfigureIncomingConnection(ApplicationConnection* connection)
      override {
    connection->AddService(this);
    return true;
  }

  // Overridden from InterfaceFactory<ContentHandler>
  virtual void Create(ApplicationConnection* connection,
                      InterfaceRequest<ContentHandler> request) override {
    BindToRequest(
        new ContentHandlerImpl(shell_, compositor_thread_.message_loop_proxy(),
                               web_media_player_factory_.get()),
        &request);
  }

  scoped_ptr<BlinkPlatformImpl> blink_platform_impl_;
  Shell* shell_;
  base::Thread compositor_thread_;
  scoped_ptr<WebMediaPlayerFactory> web_media_player_factory_;

  DISALLOW_COPY_AND_ASSIGN(HTMLViewer);
};

}  // namespace mojo

MojoResult MojoMain(MojoHandle shell_handle) {
  mojo::ApplicationRunnerChromium runner(new mojo::HTMLViewer);
  return runner.Run(shell_handle);
}