// Copyright 2013 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.

#ifndef CHROME_BROWSER_INVALIDATION_FAKE_INVALIDATION_SERVICE_H_
#define CHROME_BROWSER_INVALIDATION_FAKE_INVALIDATION_SERVICE_H_

#include <list>
#include <utility>

#include "base/basictypes.h"
#include "chrome/browser/invalidation/invalidation_service.h"
#include "sync/notifier/invalidator_registrar.h"

namespace invalidation {

// An InvalidationService that emits invalidations only when
// its EmitInvalidationForTest method is called.
class FakeInvalidationService : public InvalidationService {
 public:
  FakeInvalidationService();
  virtual ~FakeInvalidationService();

  virtual void RegisterInvalidationHandler(
      syncer::InvalidationHandler* handler) OVERRIDE;
  virtual void UpdateRegisteredInvalidationIds(
      syncer::InvalidationHandler* handler,
      const syncer::ObjectIdSet& ids) OVERRIDE;
  virtual void UnregisterInvalidationHandler(
      syncer::InvalidationHandler* handler) OVERRIDE;

  virtual void AcknowledgeInvalidation(
      const invalidation::ObjectId& id,
      const syncer::AckHandle& ack_handle) OVERRIDE;

  virtual syncer::InvalidatorState GetInvalidatorState() const OVERRIDE;
  virtual std::string GetInvalidatorClientId() const OVERRIDE;

  void SetInvalidatorState(syncer::InvalidatorState state);

  const syncer::InvalidatorRegistrar& invalidator_registrar() const {
    return invalidator_registrar_;
  }
  void EmitInvalidationForTest(const syncer::Invalidation& invalidation);

  // Determines if the given AckHandle has been acknowledged.
  bool IsInvalidationAcknowledged(const syncer::AckHandle& ack_handle) const;

  // Determines if AcknowledgeInvalidation was ever called with an invalid
  // ObjectId/AckHandle pair.
  bool ReceivedInvalidAcknowledgement() {
    return received_invalid_acknowledgement_;
  }

 private:
  std::string client_id_;
  syncer::InvalidatorRegistrar invalidator_registrar_;
  typedef std::list<std::pair<syncer::AckHandle, invalidation::ObjectId> >
      AckHandleList;
  AckHandleList unacknowledged_handles_;
  AckHandleList acknowledged_handles_;
  bool received_invalid_acknowledgement_;

  DISALLOW_COPY_AND_ASSIGN(FakeInvalidationService);
};

}  // namespace invalidation

#endif  // CHROME_BROWSER_INVALIDATION_FAKE_INVALIDATION_SERVICE_H_