package jnpf.dmsDatabase;

import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.MappedJdbcTypes;
import org.apache.ibatis.type.MappedTypes;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.UUID;

@MappedTypes(UUID.class)
@MappedJdbcTypes(value = JdbcType.OTHER, includeNullJdbcType = true)
public class DmsUuidTypeHandler extends BaseTypeHandler<UUID> {

    @Override
    public void setNonNullParameter(PreparedStatement statement, int index, UUID value, JdbcType jdbcType)
            throws SQLException {
        statement.setObject(index, value, Types.OTHER);
    }

    @Override
    public UUID getNullableResult(ResultSet resultSet, String columnName) throws SQLException {
        return toUuid(resultSet.getObject(columnName));
    }

    @Override
    public UUID getNullableResult(ResultSet resultSet, int columnIndex) throws SQLException {
        return toUuid(resultSet.getObject(columnIndex));
    }

    @Override
    public UUID getNullableResult(CallableStatement statement, int columnIndex) throws SQLException {
        return toUuid(statement.getObject(columnIndex));
    }

    private UUID toUuid(Object value) throws SQLException {
        if (value == null) {
            return null;
        }
        if (value instanceof UUID) {
            return (UUID) value;
        }
        try {
            return UUID.fromString(value.toString());
        } catch (IllegalArgumentException exception) {
            throw new SQLException("Invalid PostgreSQL UUID value: " + value, exception);
        }
    }
}