/*
 * 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.servicecomb.registry.version;

import org.apache.servicecomb.foundation.common.Version;

// 1.0.0+
public class VersionRuleStartFromParser implements VersionRuleParser {
  static class StartFromVersionRule extends VersionRule {
    private final Version from;

    public StartFromVersionRule(String versionRule, Version from) {
      super(versionRule);

      this.from = from;
    }

    public boolean isMatch(Version version, Version latestVersion) {
      return version.compareTo(from) >= 0;
    }
  }

  @Override
  public VersionRule parse(String strVersionRule) {
    int pos = strVersionRule.indexOf('+');
    if (pos <= 0 || pos != strVersionRule.length() - 1) {
      return null;
    }

    Version from = new Version(strVersionRule.substring(0, pos));
    return new StartFromVersionRule(from.getVersion() + "+", from);
  }
}
