/*
 * ToroDB
 * Copyright © 2014 8Kdata Technology (www.8kdata.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.torodb.packaging.config.model.generic.log4j;

import com.torodb.packaging.config.model.generic.LogLevel;
import org.apache.logging.log4j.Level;

import java.util.AbstractMap;
import java.util.Collections;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Log4jLevelToLogLevelMapper {

  private static final Map<Level, LogLevel> DICTIONARY = Collections.unmodifiableMap(Stream.of(
      new AbstractMap.SimpleEntry<Level, LogLevel>(Level.OFF, LogLevel.NONE),
      new AbstractMap.SimpleEntry<Level, LogLevel>(Level.ERROR, LogLevel.ERROR),
      new AbstractMap.SimpleEntry<Level, LogLevel>(Level.WARN, LogLevel.WARNING),
      new AbstractMap.SimpleEntry<Level, LogLevel>(Level.INFO, LogLevel.INFO),
      new AbstractMap.SimpleEntry<Level, LogLevel>(Level.DEBUG, LogLevel.DEBUG),
      new AbstractMap.SimpleEntry<Level, LogLevel>(Level.TRACE, LogLevel.TRACE))
      .collect(Collectors.toMap((e) -> e.getKey(), (e) -> e.getValue())
      ));
  private static final Map<LogLevel, Level> INVERSE_DICTIONARY = DICTIONARY.entrySet().stream()
      .collect(Collectors.toMap((e) -> e.getValue(), (e) -> e.getKey()));

  public static LogLevel map(Level log4jLevel) {
    return DICTIONARY.get(log4jLevel);
  }

  public static Level map(LogLevel logLevel) {
    return INVERSE_DICTIONARY.get(logLevel);
  }

}