// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PERMISSIONS_PERMISSION_REQUEST_ID_H_
#define COMPONENTS_PERMISSIONS_PERMISSION_REQUEST_ID_H_

#include <string>

#include "base/types/id_type.h"
#include "content/public/browser/global_routing_id.h"

namespace content {
class RenderFrameHost;
}  // namespace content

namespace permissions {

// Uniquely identifies a particular permission request.
// None of the different attributes (render_process_id, render_frame_id or
// request_local_id) is enough to compare two requests. In order to check if
// a request is the same as another one, consumers of this class should use
// the operator== or operator!=.
class PermissionRequestID {
 public:
  // Uniquely identifies a request (at least) within a given frame.
  using RequestLocalId = base::IdType64<PermissionRequestID>;

  PermissionRequestID(content::RenderFrameHost* render_frame_host,
                      RequestLocalId request_local_id);
  PermissionRequestID(content::GlobalRenderFrameHostId id,
                      RequestLocalId request_local_id);
  ~PermissionRequestID();

  PermissionRequestID(const PermissionRequestID&);
  PermissionRequestID& operator=(const PermissionRequestID&);

  void set_global_render_frame_host_id(
      const content::GlobalRenderFrameHostId& id) {
    global_render_frame_host_id_ = id;
  }

  const content::GlobalRenderFrameHostId& global_render_frame_host_id() const {
    return global_render_frame_host_id_;
  }

  // Deprecated. Only accessible for testing.
  RequestLocalId request_local_id_for_testing() const {
    return request_local_id_;
  }

  friend bool operator==(const PermissionRequestID&,
                         const PermissionRequestID&) = default;

  std::string ToString() const;

 private:
  content::GlobalRenderFrameHostId global_render_frame_host_id_;
  RequestLocalId request_local_id_;
};

}  // namespace permissions

#endif  // COMPONENTS_PERMISSIONS_PERMISSION_REQUEST_ID_H_