// Copyright 2013 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_INVALIDATION_IMPL_FAKE_INVALIDATION_SERVICE_H_
#define COMPONENTS_INVALIDATION_IMPL_FAKE_INVALIDATION_SERVICE_H_

#include <memory>
#include <optional>
#include <string>

#include "components/invalidation/impl/invalidator_registrar_with_memory.h"
#include "components/invalidation/public/invalidation_service.h"
#include "components/prefs/testing_pref_service.h"

namespace invalidation {

class Invalidation;

// An InvalidationService that emits invalidations only when
// its EmitInvalidationForTest method is called (and a handler is interested
// in the topic of that invalidation).
class FakeInvalidationService : public InvalidationService {
 public:
  FakeInvalidationService();
  FakeInvalidationService(const FakeInvalidationService& other) = delete;
  FakeInvalidationService& operator=(const FakeInvalidationService& other) =
      delete;
  ~FakeInvalidationService() override;

  void AddObserver(InvalidationHandler* handler) override;
  bool HasObserver(const InvalidationHandler* handler) const override;
  bool UpdateInterestedTopics(InvalidationHandler* handler,
                              const TopicSet& topics) override;
  void RemoveObserver(const InvalidationHandler* handler) override;

  InvalidatorState GetInvalidatorState() const override;
  std::string GetInvalidatorClientId() const override;
  void SetInvalidatorState(InvalidatorState state);

  const InvalidatorRegistrarWithMemory& invalidator_registrar() const {
    return *invalidator_registrar_;
  }

  void EmitInvalidationForTest(const Invalidation& invalidation);

 private:
  std::string client_id_;
  // |pref_service_| must outlive |invalidator_registrar_|.
  TestingPrefServiceSimple pref_service_;
  std::unique_ptr<InvalidatorRegistrarWithMemory> invalidator_registrar_;
};

}  // namespace invalidation

#endif  // COMPONENTS_INVALIDATION_IMPL_FAKE_INVALIDATION_SERVICE_H_