// Copyright 2016 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 "content/browser/loader/resource_requester_info.h"

#include "base/feature_list.h"
#include "base/logging.h"
#include "content/browser/appcache/chrome_appcache_service.h"
#include "content/browser/blob_storage/chrome_blob_storage_context.h"
#include "content/browser/service_worker/service_worker_context_wrapper.h"
#include "content/browser/web_package/signed_exchange_utils.h"
#include "content/public/browser/resource_context.h"
#include "content/public/common/browser_side_navigation_policy.h"
#include "content/public/common/child_process_host.h"
#include "content/public/common/content_features.h"
#include "services/network/public/cpp/features.h"
#include "storage/browser/fileapi/file_system_context.h"

namespace content {

namespace {

void GetContextsCallbackForNavigationPreload(
    scoped_refptr<ServiceWorkerContextWrapper> service_worker_context,
    ResourceType resource_type,
    ResourceContext** resource_context_out,
    net::URLRequestContext** request_context_out) {
  *resource_context_out = service_worker_context->resource_context();
  *request_context_out = (*resource_context_out)->GetRequestContext();
}

}  // namespace

ResourceRequesterInfo::ResourceRequesterInfo(
    RequesterType type,
    int child_id,
    ChromeAppCacheService* appcache_service,
    ChromeBlobStorageContext* blob_storage_context,
    storage::FileSystemContext* file_system_context,
    ServiceWorkerContextWrapper* service_worker_context,
    const GetContextsCallback& get_contexts_callback)
    : type_(type),
      child_id_(child_id),
      appcache_service_(appcache_service),
      blob_storage_context_(blob_storage_context),
      file_system_context_(file_system_context),
      service_worker_context_(service_worker_context),
      get_contexts_callback_(get_contexts_callback) {}

ResourceRequesterInfo::~ResourceRequesterInfo() {}

void ResourceRequesterInfo::set_filter(
    base::WeakPtr<ResourceMessageFilter> filter) {
  DCHECK_EQ(RequesterType::RENDERER, type_);
  filter_ = filter;
}

void ResourceRequesterInfo::GetContexts(
    ResourceType resource_type,
    ResourceContext** resource_context,
    net::URLRequestContext** request_context) const {
  get_contexts_callback_.Run(resource_type, resource_context, request_context);
}

scoped_refptr<ResourceRequesterInfo> ResourceRequesterInfo::CreateForRenderer(
    int child_id,
    ChromeAppCacheService* appcache_service,
    ChromeBlobStorageContext* blob_storage_context,
    storage::FileSystemContext* file_system_context,
    ServiceWorkerContextWrapper* service_worker_context,
    const GetContextsCallback& get_contexts_callback) {
  return scoped_refptr<ResourceRequesterInfo>(new ResourceRequesterInfo(
      RequesterType::RENDERER, child_id, appcache_service, blob_storage_context,
      file_system_context, service_worker_context, get_contexts_callback));
}

scoped_refptr<ResourceRequesterInfo>
ResourceRequesterInfo::CreateForRendererTesting(int child_id) {
  return scoped_refptr<ResourceRequesterInfo>(new ResourceRequesterInfo(
      RequesterType::RENDERER, child_id, nullptr /* appcache_service */,
      nullptr /* blob_storage_context */, nullptr /* file_system_context */,
      nullptr /*service_worker_context */, GetContextsCallback()));
}

scoped_refptr<ResourceRequesterInfo>
ResourceRequesterInfo::CreateForBrowserSideNavigation(
    scoped_refptr<ServiceWorkerContextWrapper> service_worker_context) {
  return scoped_refptr<ResourceRequesterInfo>(new ResourceRequesterInfo(
      RequesterType::BROWSER_SIDE_NAVIGATION,
      ChildProcessHost::kInvalidUniqueID, nullptr /* appcache_service */,
      nullptr /* blob_storage_context */, nullptr /* file_system_context */,
      service_worker_context.get(), GetContextsCallback()));
}

scoped_refptr<ResourceRequesterInfo>
ResourceRequesterInfo::CreateForDownloadOrPageSave(int child_id) {
  return scoped_refptr<ResourceRequesterInfo>(new ResourceRequesterInfo(
      RequesterType::DOWNLOAD_OR_PAGE_SAVE, child_id,
      nullptr /* appcache_service */, nullptr /* blob_storage_context */,
      nullptr /* file_system_context */, nullptr /*service_worker_context */,
      GetContextsCallback()));
}

scoped_refptr<ResourceRequesterInfo>
ResourceRequesterInfo::CreateForNavigationPreload(
    ResourceRequesterInfo* original_request_info) {
  GetContextsCallback get_contexts_callback =
      original_request_info->get_contexts_callback_;
  if (IsBrowserSideNavigationEnabled()) {
    DCHECK(original_request_info->IsBrowserSideNavigation());
    DCHECK(!get_contexts_callback);
    DCHECK(original_request_info->service_worker_context());
    // The requester info for browser side navigation doesn't have the
    // get_contexts_callback. So create the callback here which gets the
    // ResourceContext and the URLRequestContext form ServiceWorkerContext.
    get_contexts_callback =
        base::Bind(&GetContextsCallbackForNavigationPreload,
                   scoped_refptr<ServiceWorkerContextWrapper>(
                       original_request_info->service_worker_context()));
  } else {
    DCHECK(original_request_info->IsRenderer());
    DCHECK(get_contexts_callback);
  }

  return scoped_refptr<ResourceRequesterInfo>(new ResourceRequesterInfo(
      RequesterType::NAVIGATION_PRELOAD, ChildProcessHost::kInvalidUniqueID,
      nullptr /* appcache_service */, nullptr /* blob_storage_context */,
      nullptr /* file_system_context */,
      original_request_info->service_worker_context(),
      std::move(get_contexts_callback)));
}

scoped_refptr<ResourceRequesterInfo>
ResourceRequesterInfo::CreateForCertificateFetcherForSignedExchange(
    const GetContextsCallback& get_contexts_callback) {
  DCHECK(!base::FeatureList::IsEnabled(network::features::kNetworkService));
  DCHECK(signed_exchange_utils::IsSignedExchangeHandlingEnabled());
  return scoped_refptr<ResourceRequesterInfo>(new ResourceRequesterInfo(
      RequesterType::CERTIFICATE_FETCHER_FOR_SIGNED_EXCHANGE,
      ChildProcessHost::kInvalidUniqueID, nullptr /* appcache_service */,
      nullptr /* blob_storage_context */, nullptr /* file_system_context */,
      nullptr /* service_worker_context */, get_contexts_callback));
}

}  // namespace content