/*
    * Copyright 2023 LINE Corporation
    *
    * LINE Corporation licenses this file to you 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:
    *
    *   https://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 com.linecorp.centraldogma.server.command;
  
  import static java.util.Objects.requireNonNull;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.google.common.base.MoreObjects.ToStringHelper;
  
  /**
   * A {@link Command} which is used to force-push {@code delegate} even the server is in read-only mode.
   * This command is useful for migrating the repository content during maintenance mode.
   */
  public final class ForcePushCommand<T> extends AdministrativeCommand<T> {
  
      private final Command<T> delegate;
  
      @JsonCreator
      ForcePushCommand(@JsonProperty("delegate") Command<T> delegate) {
          super(CommandType.FORCE_PUSH, requireNonNull(delegate, "delegate").timestamp(), delegate.author());
          this.delegate = delegate;
      }
  
      /**
       * Returns the {@link Command} to be force-pushed.
       */
      @JsonProperty("delegate")
      public Command<T> delegate() {
          return delegate;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (!(o instanceof ForcePushCommand)) {
              return false;
          }
          final ForcePushCommand<?> that = (ForcePushCommand<?>) o;
          return super.equals(that) && delegate.equals(that.delegate);
      }
  
      @Override
      public int hashCode() {
          return super.hashCode() * 31 + delegate.hashCode();
      }
  
      @Override
      ToStringHelper toStringHelper() {
          return super.toStringHelper().add("delegate", delegate);
      }
  }