/*
 * 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.backend.converters.jooq;

import com.torodb.backend.converters.array.ArrayConverter;
import com.torodb.kvdocument.values.KvValue;
import org.jooq.Converter;
import org.jooq.DataType;
import org.jooq.impl.DefaultDataType;

import javax.json.JsonValue;

public class ArrayToJooqConverter<UT extends KvValue<?>> implements Converter<String, UT> {

  private static final long serialVersionUID = 1L;

  public static <UT extends KvValue<?>, V extends JsonValue> DataType<UT> fromScalarValue(
      final Class<UT> type, final ArrayConverter<V, UT> arrayConverter, String typeName) {
    Converter<String, UT> converter = new ArrayToJooqConverter<>(type, arrayConverter);
    return new DefaultDataType<>(null, String.class, typeName).asConvertedDataType(converter);
  }

  private final Class<UT> type;
  private final ArrayConverter<?, UT> arrayConverter;

  public ArrayToJooqConverter(Class<UT> type, ArrayConverter<?, UT> arrayConverter) {
    super();
    this.type = type;
    this.arrayConverter = arrayConverter;
  }

  @Override
  public UT from(String databaseObject) {
    throw new RuntimeException("This conversor should not be used to convert from a database "
        + "object");
  }

  @Override
  public String to(UT userObject) {
    return arrayConverter.toJsonLiteral(userObject);
  }

  @Override
  public Class<String> fromType() {
    return String.class;
  }

  @Override
  public Class<UT> toType() {
    return type;
  }
}