// 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 "extensions/shell/browser/shell_extension_system.h"

#include <memory>
#include <string>

#include "apps/launcher.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "extensions/browser/api/app_runtime/app_runtime_api.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/info_map.h"
#include "extensions/browser/notification_types.h"
#include "extensions/browser/null_app_sorting.h"
#include "extensions/browser/quota_service.h"
#include "extensions/browser/runtime_data.h"
#include "extensions/browser/service_worker_manager.h"
#include "extensions/browser/value_store/value_store_factory_impl.h"
#include "extensions/common/constants.h"
#include "extensions/common/file_util.h"
#include "extensions/shell/browser/shell_extension_loader.h"

using content::BrowserContext;
using content::BrowserThread;

namespace extensions {

ShellExtensionSystem::ShellExtensionSystem(BrowserContext* browser_context)
    : browser_context_(browser_context),
      store_factory_(new ValueStoreFactoryImpl(browser_context->GetPath())),
      weak_factory_(this) {}

ShellExtensionSystem::~ShellExtensionSystem() = default;

const Extension* ShellExtensionSystem::LoadExtension(
    const base::FilePath& extension_dir) {
  return extension_loader_->LoadExtension(extension_dir);
}

const Extension* ShellExtensionSystem::LoadApp(const base::FilePath& app_dir) {
  return LoadExtension(app_dir);
}

void ShellExtensionSystem::FinishInitialization() {
  // Inform the rest of the extensions system to start.
  ready_.Signal();
  content::NotificationService::current()->Notify(
      NOTIFICATION_EXTENSIONS_READY_DEPRECATED,
      content::Source<BrowserContext>(browser_context_),
      content::NotificationService::NoDetails());
}

void ShellExtensionSystem::LaunchApp(const ExtensionId& extension_id) {
  // Send the onLaunched event.
  DCHECK(ExtensionRegistry::Get(browser_context_)
             ->enabled_extensions()
             .Contains(extension_id));
  const Extension* extension = ExtensionRegistry::Get(browser_context_)
                                   ->enabled_extensions()
                                   .GetByID(extension_id);
  apps::LaunchPlatformApp(browser_context_, extension, SOURCE_UNTRACKED);
}

void ShellExtensionSystem::ReloadExtension(const ExtensionId& extension_id) {
  extension_loader_->ReloadExtension(extension_id);
}

void ShellExtensionSystem::Shutdown() {
  extension_loader_.reset();
}

void ShellExtensionSystem::InitForRegularProfile(bool extensions_enabled) {
  service_worker_manager_ =
      std::make_unique<ServiceWorkerManager>(browser_context_);
  runtime_data_ =
      std::make_unique<RuntimeData>(ExtensionRegistry::Get(browser_context_));
  quota_service_ = std::make_unique<QuotaService>();
  app_sorting_ = std::make_unique<NullAppSorting>();
  extension_loader_ = std::make_unique<ShellExtensionLoader>(browser_context_);
}

void ShellExtensionSystem::InitForIncognitoProfile() {
  NOTREACHED();
}

ExtensionService* ShellExtensionSystem::extension_service() {
  return nullptr;
}

RuntimeData* ShellExtensionSystem::runtime_data() {
  return runtime_data_.get();
}

ManagementPolicy* ShellExtensionSystem::management_policy() {
  return nullptr;
}

ServiceWorkerManager* ShellExtensionSystem::service_worker_manager() {
  return service_worker_manager_.get();
}

SharedUserScriptMaster* ShellExtensionSystem::shared_user_script_master() {
  return nullptr;
}

StateStore* ShellExtensionSystem::state_store() {
  return nullptr;
}

StateStore* ShellExtensionSystem::rules_store() {
  return nullptr;
}

scoped_refptr<ValueStoreFactory> ShellExtensionSystem::store_factory() {
  return store_factory_;
}

InfoMap* ShellExtensionSystem::info_map() {
  if (!info_map_.get())
    info_map_ = new InfoMap;
  return info_map_.get();
}

QuotaService* ShellExtensionSystem::quota_service() {
  return quota_service_.get();
}

AppSorting* ShellExtensionSystem::app_sorting() {
  return app_sorting_.get();
}

void ShellExtensionSystem::RegisterExtensionWithRequestContexts(
    const Extension* extension,
    const base::Closure& callback) {
  BrowserThread::PostTaskAndReply(
      BrowserThread::IO, FROM_HERE,
      base::Bind(&InfoMap::AddExtension, info_map(),
                 base::RetainedRef(extension), base::Time::Now(), false, false),
      callback);
}

void ShellExtensionSystem::UnregisterExtensionWithRequestContexts(
    const std::string& extension_id,
    const UnloadedExtensionReason reason) {}

const OneShotEvent& ShellExtensionSystem::ready() const {
  return ready_;
}

ContentVerifier* ShellExtensionSystem::content_verifier() {
  return nullptr;
}

std::unique_ptr<ExtensionSet> ShellExtensionSystem::GetDependentExtensions(
    const Extension* extension) {
  return std::make_unique<ExtensionSet>();
}

void ShellExtensionSystem::InstallUpdate(
    const std::string& extension_id,
    const std::string& public_key,
    const base::FilePath& temp_dir,
    bool install_immediately,
    InstallUpdateCallback install_update_callback) {
  NOTREACHED();
  base::DeleteFile(temp_dir, true /* recursive */);
}

bool ShellExtensionSystem::FinishDelayedInstallationIfReady(
    const std::string& extension_id,
    bool install_immediately) {
  NOTREACHED();
  return false;
}

void ShellExtensionSystem::OnExtensionRegisteredWithRequestContexts(
    scoped_refptr<Extension> extension) {
  ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context_);
  registry->AddReady(extension);
  registry->TriggerOnReady(extension.get());
}

}  // namespace extensions