// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package google.registry.util;

import static org.joda.time.DateTimeZone.UTC;

import dagger.Module;
import dagger.Provides;

import org.joda.time.DateTime;

import javax.annotation.concurrent.ThreadSafe;

/** Clock implementation that proxies to the real system clock. */
@ThreadSafe
public class SystemClock implements Clock {

  /** Returns the current time. */
  @Override
  public DateTime nowUtc() {
    return DateTime.now(UTC);
  }

  /** Dagger module for {@link SystemClock}. */
  @Module
  public static final class SystemClockModule {
    private static final Clock clock = new SystemClock();

    @Provides
    static Clock provideClock() {
      return clock;
    }
  }
}