/**
 * This file is part of the Meeds project (https://meeds.io/).
 *
 * Copyright (C) 2020 - 2025 Meeds Association contact@meeds.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.exoplatform.commons.utils;

import java.util.Arrays;
import java.util.Map;
import java.util.stream.Collectors;

import org.apache.commons.lang3.StringUtils;

import jakarta.persistence.AttributeConverter;
import jakarta.persistence.Converter;

@Converter
public class StringMapConverter implements AttributeConverter<Map<String, String>, String> {

  private static final String DELIMITER = "\n";

  @Override
  public String convertToDatabaseColumn(Map<String, String> attributes) {
    return attributes
        != null ?
                StringUtils.join(attributes.entrySet().stream().map(e -> "%s=%s".formatted(e.getKey(), e.getValue())).toList(),
                                 DELIMITER) :
                null;
  }

  @Override
  public Map<String, String> convertToEntityAttribute(String dbData) {
    return dbData != null ? Arrays.stream(dbData.split(DELIMITER))
                                  .filter(StringUtils::isNotBlank)
                                  .collect(Collectors.toMap(v -> v.substring(0, v.indexOf("=")),
                                                            v -> v.substring(v.indexOf("=") + 1))) :
                          null;
  }

}
