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//
// Copyright (C) 2010-2016 Micromata GmbH
//
// 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 de.micromata.genome.logging;

import org.apache.commons.lang3.StringUtils;

import de.micromata.genome.util.types.Pair;

/**
 * fuer DB-Logger schreibt Value in short oder long value.
 *
 * @author roger
 */
public interface LogAttributeValueMapper
{

  /**
   * The Constant SHORT_VALUE_MAXSIZE.
   */
  public static final short SHORT_VALUE_MAXSIZE = 40 - 1;

  /**
   * The Constant LONG_VALUE_MAXSIZE.
   */
  public static final short LONG_VALUE_MAXSIZE = 4000 - 1;

  /**
   * return value for short (first) and long (second) db field.
   *
   * @param value the value
   * @return the pair
   */
  public Pair mapAttributeValue(String value);

  /**
   * The Class ShortValueMapper.
   */
  public static class ShortValueMapper implements LogAttributeValueMapper
  {

    @Override
    public Pair mapAttributeValue(String value)
    {
      return new Pair(LogAttribute.shorten(value, SHORT_VALUE_MAXSIZE), null);
    }
  }

  /**
   * The Class LongValueMapper.
   */
  public static class LongValueMapper implements LogAttributeValueMapper
  {
    @Override
    public Pair mapAttributeValue(String value)
    {
      // return new Pair(null, StringUtils.substring(value, 0, LONG_VALUE_MAXSIZE));
      return new Pair(null, value);
    }
  }

  /**
   * The Class BothValueMapper.
   */
  public static class BothValueMapper implements LogAttributeValueMapper
  {
    @Override
    public Pair mapAttributeValue(String value)
    {
      String sval = LogAttribute.shorten(value, SHORT_VALUE_MAXSIZE);
      if (StringUtils.defaultString(value).length() <= SHORT_VALUE_MAXSIZE) {
        value = null;
      }
      return new Pair(sval, value);
    }
  }

  /**
   * The Constant shortValueMapper.
   */
  public static final LogAttributeValueMapper shortValueMapper = new ShortValueMapper();

  /**
   * The Constant longValueMapper.
   */
  public static final LogAttributeValueMapper longValueMapper = new LongValueMapper();

  /**
   * The Constant bothValueMapper.
   */
  public static final LogAttributeValueMapper bothValueMapper = new BothValueMapper();
}