/*
    * Copyright 2009 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
    *
    *     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.openehealth.ipf.commons.ihe.xds.core.validate;
  
  import static org.apache.commons.lang3.Validate.notNull;
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidationMessage.*;
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidatorAssertions.*;
  
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  
  /**
   * Validates a PID string.
   * @author Jens Riemschneider
   */
  public class PidValidator implements ValueValidator {
      private static final Pattern PID_PATTERN = Pattern.compile("\\s*PID-([1-9][0-9]*)\\|(.*)\\s*");
  
      @Override
      public void validate(String value) throws XDSMetaDataException {
          notNull(value, "value cannot be null");
          
          Matcher matcher = PID_PATTERN.matcher(value);
          metaDataAssert(matcher.matches(), INVALID_PID, value);
                  
          int number = Integer.parseInt(matcher.group(1));
          metaDataAssert(number != 2 && number != 4 && number != 12 && number != 19 && number <= 39,
                  UNSUPPORTED_PID, value);
      }
  }