/*
    *    Copyright 2010-2022 the original author or authors.
    *
    *    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
    *
    *       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 org.apache.ibatis.migration.commands;
  
  import java.math.BigDecimal;
  
  import org.apache.ibatis.migration.MigrationException;
  import org.apache.ibatis.migration.operations.VersionOperation;
  import org.apache.ibatis.migration.options.SelectedOptions;
  
  public final class VersionCommand extends BaseCommand {
    public VersionCommand(SelectedOptions options) {
      super(options);
    }
  
    @Override
    public void execute(String... params) {
      ensureParamsPassed(params);
      ensureNumericParam(params);
  
      VersionOperation operation = new VersionOperation(new BigDecimal(params[0]));
      operation.operate(getConnectionProvider(), getMigrationLoader(), getDatabaseOperationOption(), printStream,
          createUpHook(), createDownHook());
    }
  
    private void ensureParamsPassed(String... params) {
      if (paramsEmpty(params)) {
        throw new MigrationException("No target version specified for migration.");
      }
    }
  
    private void ensureNumericParam(String... params) {
      try {
        new BigDecimal(params[0]);
      } catch (Exception e) {
        throw new MigrationException("The version number must be a numeric integer.  " + e, e);
      }
    }
  }