// 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-CHROMIUM file.

#include "browser/browser_client.h"

#include "browser/browser_context.h"
#include "browser/browser_main_parts.h"
#include "browser/devtools_manager_delegate.h"
#include "browser/media/media_capture_devices_dispatcher.h"
#include "browser/platform_notification_service_impl.h"

#include "base/base_paths.h"
#include "base/path_service.h"
#include "content/public/common/content_descriptors.h"
#include "content/public/common/url_constants.h"
#include "gin/public/isolate_holder.h"

namespace brightray {

namespace {

BrowserClient* g_browser_client;

}

BrowserClient* BrowserClient::Get() {
  return g_browser_client;
}

BrowserClient::BrowserClient()
    : browser_main_parts_(nullptr) {
  DCHECK(!g_browser_client);
  g_browser_client = this;

#if defined(OS_POSIX) && !defined(OS_MACOSX)
  v8_natives_fd_.reset(-1);
  v8_snapshot_fd_.reset(-1);
#endif  // OS_POSIX && !OS_MACOSX
}

BrowserClient::~BrowserClient() {
}

BrowserContext* BrowserClient::browser_context() {
  return browser_main_parts_->browser_context();
}

BrowserMainParts* BrowserClient::OverrideCreateBrowserMainParts(
    const content::MainFunctionParams&) {
  return new BrowserMainParts;
}

content::BrowserMainParts* BrowserClient::CreateBrowserMainParts(
    const content::MainFunctionParams& parameters) {
  DCHECK(!browser_main_parts_);
  browser_main_parts_ = OverrideCreateBrowserMainParts(parameters);
  return browser_main_parts_;
}

net::URLRequestContextGetter* BrowserClient::CreateRequestContext(
    content::BrowserContext* browser_context,
    content::ProtocolHandlerMap* protocol_handlers,
    content::URLRequestInterceptorScopedVector protocol_interceptors) {
  auto context = static_cast<BrowserContext*>(browser_context);
  return context->CreateRequestContext(protocol_handlers, protocol_interceptors.Pass());
}

content::MediaObserver* BrowserClient::GetMediaObserver() {
  return MediaCaptureDevicesDispatcher::GetInstance();
}

content::PlatformNotificationService* BrowserClient::GetPlatformNotificationService() {
  return PlatformNotificationServiceImpl::GetInstance();
}

void BrowserClient::GetAdditionalAllowedSchemesForFileSystem(
    std::vector<std::string>* additional_schemes) {
  additional_schemes->push_back(content::kChromeDevToolsScheme);
  additional_schemes->push_back(content::kChromeUIScheme);
}

base::FilePath BrowserClient::GetDefaultDownloadDirectory() {
  // ~/Downloads
  base::FilePath path;
  if (PathService::Get(base::DIR_HOME, &path))
    path = path.Append(FILE_PATH_LITERAL("Downloads"));

  return path;
}

content::DevToolsManagerDelegate* BrowserClient::GetDevToolsManagerDelegate() {
  return new DevToolsManagerDelegate;
}

#if defined(OS_POSIX) && !defined(OS_MACOSX)
void BrowserClient::GetAdditionalMappedFilesForChildProcess(
    const base::CommandLine& command_line,
    int child_process_id,
    content::FileDescriptorInfo* mappings) {
  if (v8_snapshot_fd_.get() == -1 && v8_natives_fd_.get() == -1) {
    base::FilePath v8_data_path;
    PathService::Get(gin::IsolateHolder::kV8SnapshotBasePathKey, &v8_data_path);
    DCHECK(!v8_data_path.empty());

    int file_flags = base::File::FLAG_OPEN | base::File::FLAG_READ;
    base::FilePath v8_natives_data_path =
        v8_data_path.AppendASCII(gin::IsolateHolder::kNativesFileName);
    base::FilePath v8_snapshot_data_path =
        v8_data_path.AppendASCII(gin::IsolateHolder::kSnapshotFileName);
    base::File v8_natives_data_file(v8_natives_data_path, file_flags);
    base::File v8_snapshot_data_file(v8_snapshot_data_path, file_flags);
    DCHECK(v8_natives_data_file.IsValid());
    DCHECK(v8_snapshot_data_file.IsValid());
    v8_natives_fd_.reset(v8_natives_data_file.TakePlatformFile());
    v8_snapshot_fd_.reset(v8_snapshot_data_file.TakePlatformFile());
  }
  mappings->Share(kV8NativesDataDescriptor, v8_natives_fd_.get());
  mappings->Share(kV8SnapshotDataDescriptor, v8_snapshot_fd_.get());
}
#endif

}  // namespace brightray