// Copyright 2018 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 "ios/chrome/browser/invalidation/ios_chrome_profile_invalidation_provider_factory.h"

#include <memory>
#include <utility>

#include "base/bind.h"
#include "base/callback.h"
#include "base/no_destructor.h"
#include "components/gcm_driver/gcm_profile_service.h"
#include "components/gcm_driver/instance_id/instance_id_profile_service.h"
#include "components/invalidation/impl/fcm_invalidation_service.h"
#include "components/invalidation/impl/invalidator_storage.h"
#include "components/invalidation/impl/json_unsafe_parser.h"
#include "components/invalidation/impl/profile_identity_provider.h"
#include "components/invalidation/impl/profile_invalidation_provider.h"
#include "components/keyed_service/ios/browser_state_dependency_manager.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/pref_registry.h"
#include "ios/chrome/browser/application_context.h"
#include "ios/chrome/browser/browser_state/chrome_browser_state.h"
#include "ios/chrome/browser/gcm/instance_id/ios_chrome_instance_id_profile_service_factory.h"
#include "ios/chrome/browser/gcm/ios_chrome_gcm_profile_service_factory.h"
#include "ios/chrome/browser/signin/identity_manager_factory.h"
#include "ios/web/public/web_client.h"
#include "net/url_request/url_request_context_getter.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"

#if !defined(__has_feature) || !__has_feature(objc_arc)
#error "This file requires ARC support."
#endif

using invalidation::ProfileInvalidationProvider;

// static
invalidation::ProfileInvalidationProvider*
IOSChromeProfileInvalidationProviderFactory::GetForBrowserState(
    ios::ChromeBrowserState* browser_state) {
  return static_cast<ProfileInvalidationProvider*>(
      GetInstance()->GetServiceForBrowserState(browser_state, true));
}

// static
IOSChromeProfileInvalidationProviderFactory*
IOSChromeProfileInvalidationProviderFactory::GetInstance() {
  static base::NoDestructor<IOSChromeProfileInvalidationProviderFactory>
      instance;
  return instance.get();
}

IOSChromeProfileInvalidationProviderFactory::
    IOSChromeProfileInvalidationProviderFactory()
    : BrowserStateKeyedServiceFactory(
          "InvalidationService",
          BrowserStateDependencyManager::GetInstance()) {
  DependsOn(IdentityManagerFactory::GetInstance());
  DependsOn(IOSChromeGCMProfileServiceFactory::GetInstance());
  DependsOn(IOSChromeInstanceIDProfileServiceFactory::GetInstance());
}

IOSChromeProfileInvalidationProviderFactory::
    ~IOSChromeProfileInvalidationProviderFactory() {}

std::unique_ptr<KeyedService>
IOSChromeProfileInvalidationProviderFactory::BuildServiceInstanceFor(
    web::BrowserState* context) const {
  ios::ChromeBrowserState* browser_state =
      ios::ChromeBrowserState::FromBrowserState(context);

  auto identity_provider =
      std::make_unique<invalidation::ProfileIdentityProvider>(
          IdentityManagerFactory::GetForBrowserState(browser_state));

  std::unique_ptr<invalidation::FCMInvalidationService> service =
      std::make_unique<invalidation::FCMInvalidationService>(
          identity_provider.get(),
          IOSChromeGCMProfileServiceFactory::GetForBrowserState(browser_state)
              ->driver(),
          IOSChromeInstanceIDProfileServiceFactory::GetForBrowserState(
              browser_state)
              ->driver(),
          browser_state->GetPrefs(),
          base::BindRepeating(&syncer::JsonUnsafeParser::Parse),
          browser_state->GetURLLoaderFactory());
  service->Init();

  return std::make_unique<ProfileInvalidationProvider>(
      std::move(service), std::move(identity_provider));
}