// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_SERVICE_IMPL_H_
#define CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_SERVICE_IMPL_H_

#include <string>
#include <utility>
#include <vector>

#include "base/memory/scoped_refptr.h"
#include "base/sequence_checker.h"
#include "content/browser/background_fetch/background_fetch_context.h"
#include "content/common/content_export.h"
#include "net/base/isolation_info.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
#include "third_party/blink/public/mojom/background_fetch/background_fetch.mojom.h"

namespace net {
class NetworkAnonymizationKey;
}  // namespace net

namespace content {

struct ServiceWorkerVersionBaseInfo;

class CONTENT_EXPORT BackgroundFetchServiceImpl
    : public blink::mojom::BackgroundFetchService {
 public:
  BackgroundFetchServiceImpl(
      scoped_refptr<BackgroundFetchContext> background_fetch_context,
      blink::StorageKey storage_key,
      net::IsolationInfo isolation_info,
      RenderProcessHost* rph,
      RenderFrameHostImpl* rfh);

  BackgroundFetchServiceImpl(const BackgroundFetchServiceImpl&) = delete;
  BackgroundFetchServiceImpl& operator=(const BackgroundFetchServiceImpl&) =
      delete;

  ~BackgroundFetchServiceImpl() override;

  static void CreateForWorker(
      const net::NetworkIsolationKey& network_isolation_key,
      const ServiceWorkerVersionBaseInfo& info,
      mojo::PendingReceiver<blink::mojom::BackgroundFetchService> receiver);

  static void CreateForFrame(
      RenderFrameHost* render_frame_host,
      mojo::PendingReceiver<blink::mojom::BackgroundFetchService> receiver);

  // blink::mojom::BackgroundFetchService implementation.
  void Fetch(int64_t service_worker_registration_id,
             const std::string& developer_id,
             std::vector<blink::mojom::FetchAPIRequestPtr> requests,
             blink::mojom::BackgroundFetchOptionsPtr options,
             const SkBitmap& icon,
             blink::mojom::BackgroundFetchUkmDataPtr ukm_data,
             FetchCallback callback) override;
  void GetIconDisplaySize(GetIconDisplaySizeCallback callback) override;
  void GetRegistration(int64_t service_worker_registration_id,
                       const std::string& developer_id,
                       GetRegistrationCallback callback) override;
  void GetDeveloperIds(int64_t service_worker_registration_id,
                       GetDeveloperIdsCallback callback) override;

 private:
  // Validates and returns whether the |developer_id|, |unique_id|, |requests|
  // and |title| respectively have valid values. The renderer will be flagged
  // for having sent a bad message if the values are invalid.
  [[nodiscard]] bool ValidateDeveloperId(const std::string& developer_id);
  [[nodiscard]] bool ValidateUniqueId(const std::string& unique_id);
  [[nodiscard]] bool ValidateRequests(
      const std::vector<blink::mojom::FetchAPIRequestPtr>& requests);

  // The Background Fetch context on which operations will be dispatched.
  scoped_refptr<BackgroundFetchContext> background_fetch_context_;

  const blink::StorageKey storage_key_;

  net::IsolationInfo isolation_info_;

  int rph_id_;

  // Identifies the RenderFrameHost that is using this service, if any. May not
  // resolve to a host if the frame has already been destroyed or a worker is
  // using this service.
  GlobalRenderFrameHostId rfh_id_;

  SEQUENCE_CHECKER(sequence_checker_);
};

}  // namespace content

#endif  // CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_SERVICE_IMPL_H_