/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF 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
 *
 * 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 org.apache.geode.management.internal.cli.commands;

import java.util.List;
import java.util.Set;

import org.springframework.shell.core.annotation.CliCommand;
import org.springframework.shell.core.annotation.CliOption;

import org.apache.geode.cache.execute.ResultCollector;
import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.management.cli.CliMetaData;
import org.apache.geode.management.cli.ConverterHint;
import org.apache.geode.management.cli.Result;
import org.apache.geode.management.internal.cli.CliUtil;
import org.apache.geode.management.internal.cli.domain.SubscriptionQueueSizeResult;
import org.apache.geode.management.internal.cli.functions.GetSubscriptionQueueSizeFunction;
import org.apache.geode.management.internal.cli.i18n.CliStrings;
import org.apache.geode.management.internal.cli.result.ResultBuilder;
import org.apache.geode.management.internal.security.ResourceOperation;
import org.apache.geode.security.ResourcePermission;

public class CountDurableCQEventsCommand implements GfshCommand {
  DurableClientCommandsResultBuilder builder = new DurableClientCommandsResultBuilder();

  @CliCommand(value = CliStrings.COUNT_DURABLE_CQ_EVENTS,
      help = CliStrings.COUNT_DURABLE_CQ_EVENTS__HELP)
  @CliMetaData()
  @ResourceOperation(resource = ResourcePermission.Resource.CLUSTER,
      operation = ResourcePermission.Operation.READ)
  public Result countDurableCqEvents(
      @CliOption(key = CliStrings.COUNT_DURABLE_CQ_EVENTS__DURABLE__CLIENT__ID, mandatory = true,
          help = CliStrings.COUNT_DURABLE_CQ_EVENTS__DURABLE__CLIENT__ID__HELP) final String durableClientId,
      @CliOption(key = CliStrings.COUNT_DURABLE_CQ_EVENTS__DURABLE__CQ__NAME,
          help = CliStrings.COUNT_DURABLE_CQ_EVENTS__DURABLE__CQ__NAME__HELP) final String cqName,
      @CliOption(key = {CliStrings.MEMBER, CliStrings.MEMBERS},
          help = CliStrings.COUNT_DURABLE_CQ_EVENTS__MEMBER__HELP,
          optionContext = ConverterHint.MEMBERIDNAME) final String[] memberNameOrId,
      @CliOption(key = {CliStrings.GROUP, CliStrings.GROUPS},
          help = CliStrings.COUNT_DURABLE_CQ_EVENTS__GROUP__HELP,
          optionContext = ConverterHint.MEMBERGROUP) final String[] group) {

    Result result;
    try {
      Set<DistributedMember> targetMembers = CliUtil.findMembers(group, memberNameOrId, getCache());

      if (targetMembers.isEmpty()) {
        return ResultBuilder.createUserErrorResult(CliStrings.NO_MEMBERS_FOUND_MESSAGE);
      }

      String[] params = new String[2];
      params[0] = durableClientId;
      params[1] = cqName;
      final ResultCollector<?, ?> rc =
          CliUtil.executeFunction(new GetSubscriptionQueueSizeFunction(), params, targetMembers);
      final List<SubscriptionQueueSizeResult> funcResults =
          (List<SubscriptionQueueSizeResult>) rc.getResult();

      String queueSizeColumnName;

      if (cqName != null && !cqName.isEmpty()) {
        queueSizeColumnName = CliStrings
            .format(CliStrings.COUNT_DURABLE_CQ_EVENTS__SUBSCRIPTION__QUEUE__SIZE__CLIENT, cqName);
      } else {
        queueSizeColumnName = CliStrings.format(
            CliStrings.COUNT_DURABLE_CQ_EVENTS__SUBSCRIPTION__QUEUE__SIZE__CLIENT, durableClientId);
      }
      result = builder.buildTableResultForQueueSize(funcResults, queueSizeColumnName);
    } catch (Exception e) {
      result = ResultBuilder.createGemFireErrorResult(e.getMessage());
    }
    return result;
  }
}
