// 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_context.h"

#include "browser/download_manager_delegate.h"
#include "browser/inspectable_web_contents_impl.h"
#include "browser/network_delegate.h"
#include "browser/url_request_context_getter.h"
#include "common/application_info.h"

#include "base/environment.h"
#include "base/files/file_path.h"
#include "base/path_service.h"
#include "base/prefs/json_pref_store.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service.h"
#include "base/prefs/pref_service_factory.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/resource_context.h"
#include "content/public/browser/storage_partition.h"

#if defined(OS_LINUX)
#include "base/nix/xdg_util.h"
#endif

namespace brightray {

class BrowserContext::ResourceContext : public content::ResourceContext {
 public:
  ResourceContext() : getter_(nullptr) {}

  void set_url_request_context_getter(URLRequestContextGetter* getter) {
    getter_ = getter;
  }

 private:
  virtual net::HostResolver* GetHostResolver() OVERRIDE {
    return getter_->host_resolver();
  }

  virtual net::URLRequestContext* GetRequestContext() OVERRIDE {
    return getter_->GetURLRequestContext();
  }

  // FIXME: We should probably allow clients to override this to implement more
  // restrictive policies.
  virtual bool AllowMicAccess(const GURL& origin) OVERRIDE {
    return true;
  }

  // FIXME: We should probably allow clients to override this to implement more
  // restrictive policies.
  virtual bool AllowCameraAccess(const GURL& origin) OVERRIDE {
    return true;
  }

  URLRequestContextGetter* getter_;
};

BrowserContext::BrowserContext() : resource_context_(new ResourceContext) {
}

void BrowserContext::Initialize() {
  base::FilePath path;
#if defined(OS_LINUX)
  scoped_ptr<base::Environment> env(base::Environment::Create());
  path = base::nix::GetXDGDirectory(env.get(),
                                    base::nix::kXdgConfigHomeEnvVar,
                                    base::nix::kDotConfigDir);
#else
  CHECK(PathService::Get(base::DIR_APP_DATA, &path));
#endif

  path_ = path.Append(base::FilePath::FromUTF8Unsafe(GetApplicationName()));

  auto prefs_path = GetPath().Append(FILE_PATH_LITERAL("Preferences"));
  base::PrefServiceFactory prefs_factory;
  prefs_factory.SetUserPrefsFile(prefs_path,
      JsonPrefStore::GetTaskRunnerForFile(
          prefs_path, content::BrowserThread::GetBlockingPool()));

  auto registry = make_scoped_refptr(new PrefRegistrySimple);
  RegisterInternalPrefs(registry);
  RegisterPrefs(registry);

  prefs_ = prefs_factory.Create(registry);
}

BrowserContext::~BrowserContext() {
  content::BrowserThread::DeleteSoon(content::BrowserThread::IO,
                                     FROM_HERE,
                                     resource_context_.release());
}

void BrowserContext::RegisterInternalPrefs(PrefRegistrySimple* registry) {
  InspectableWebContentsImpl::RegisterPrefs(registry);
}

net::URLRequestContextGetter* BrowserContext::CreateRequestContext(
    content::ProtocolHandlerMap* protocol_handlers,
    content::ProtocolHandlerScopedVector protocol_interceptors) {
  DCHECK(!url_request_getter_);
  auto io_loop = content::BrowserThread::UnsafeGetMessageLoopForThread(
      content::BrowserThread::IO);
  auto file_loop = content::BrowserThread::UnsafeGetMessageLoopForThread(
      content::BrowserThread::FILE);
  url_request_getter_ = new URLRequestContextGetter(
      GetPath(),
      io_loop,
      file_loop,
      base::Bind(&BrowserContext::CreateNetworkDelegate, base::Unretained(this)),
      protocol_handlers,
      protocol_interceptors.Pass());
  resource_context_->set_url_request_context_getter(url_request_getter_.get());
  return url_request_getter_.get();
}

scoped_ptr<NetworkDelegate> BrowserContext::CreateNetworkDelegate() {
  return make_scoped_ptr(new NetworkDelegate).Pass();
}

base::FilePath BrowserContext::GetPath() const {
  return path_;
}

bool BrowserContext::IsOffTheRecord() const {
  return false;
}

net::URLRequestContextGetter* BrowserContext::GetRequestContext() {
  return GetDefaultStoragePartition(this)->GetURLRequestContext();
}

net::URLRequestContextGetter* BrowserContext::GetRequestContextForRenderProcess(
    int renderer_child_id) {
  return GetRequestContext();
}

net::URLRequestContextGetter* BrowserContext::GetMediaRequestContext() {
  return GetRequestContext();
}

net::URLRequestContextGetter*
    BrowserContext::GetMediaRequestContextForRenderProcess(
        int renderer_child_id) {
  return GetRequestContext();
}

net::URLRequestContextGetter*
    BrowserContext::GetMediaRequestContextForStoragePartition(
        const base::FilePath& partition_path,
        bool in_memory) {
  return GetRequestContext();
}

void BrowserContext::RequestMidiSysExPermission(
    int render_process_id,
    int render_view_id,
    int bridge_id,
    const GURL& requesting_frame,
    bool user_gesture,
    const MidiSysExPermissionCallback& callback) {
  callback.Run(false);
}

void BrowserContext::CancelMidiSysExPermissionRequest(
    int render_process_id,
    int render_view_id,
    int bridge_id,
    const GURL& requesting_frame) {
}

void BrowserContext::RequestProtectedMediaIdentifierPermission(
    int render_process_id,
    int render_view_id,
    int bridge_id,
    int group_id,
    const GURL& requesting_frame,
    const ProtectedMediaIdentifierPermissionCallback& callback) {
  callback.Run(false);
}

void BrowserContext::CancelProtectedMediaIdentifierPermissionRequests(int group_id) {
}

content::ResourceContext* BrowserContext::GetResourceContext() {
  return resource_context_.get();
}

content::DownloadManagerDelegate* BrowserContext::GetDownloadManagerDelegate() {
  if (!download_manager_delegate_)
    download_manager_delegate_.reset(new DownloadManagerDelegate);
  return download_manager_delegate_.get();
}

content::GeolocationPermissionContext*
    BrowserContext::GetGeolocationPermissionContext() {
  return nullptr;
}

quota::SpecialStoragePolicy* BrowserContext::GetSpecialStoragePolicy() {
  return nullptr;
}

content::BrowserPluginGuestManagerDelegate* BrowserContext::GetGuestManagerDelegate() {
  return nullptr;
}

}  // namespace brightray