/*
    * Copyright 2021 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.client;
  
  import static com.google.common.base.Preconditions.checkArgument;
  import static java.util.Objects.requireNonNull;
  
  import java.time.Duration;
  
  import com.linecorp.centraldogma.common.EntryNotFoundException;
  
  /**
   * Options for a watch request.
   */
  abstract class WatchOptions {
  
      private long timeoutMillis = WatchConstants.DEFAULT_WATCH_TIMEOUT_MILLIS;
      private boolean errorOnEntryNotFound = WatchConstants.DEFAULT_WATCH_ERROR_ON_ENTRY_NOT_FOUND;
  
      /**
       * Sets the timeout for a watch request.
       */
      WatchOptions timeout(Duration timeout) {
          requireNonNull(timeout, "timeout");
          checkArgument(!timeout.isZero() && !timeout.isNegative(), "timeout: %s (expected: > 0)", timeout);
          return timeoutMillis(timeout.toMillis());
      }
  
      /**
       * Sets the timeout for a watch request in milliseconds.
       */
      WatchOptions timeoutMillis(long timeoutMillis) {
          checkArgument(timeoutMillis > 0, "timeoutMillis: %s (expected: > 0)", timeoutMillis);
          this.timeoutMillis = timeoutMillis;
          return this;
      }
  
      long timeoutMillis() {
          return timeoutMillis;
      }
  
      /**
       * Sets whether to throw an {@link EntryNotFoundException} if the watch target does not exist.
       */
      public WatchOptions errorOnEntryNotFound(boolean errorOnEntryNotFound) {
          this.errorOnEntryNotFound = errorOnEntryNotFound;
          return this;
      }
  
      boolean errorOnEntryNotFound() {
          return errorOnEntryNotFound;
      }
  }