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/*
 * 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 com.github.pgasync.impl.conversion;

import com.github.pgasync.SqlException;
import com.github.pgasync.impl.Oid;

import java.nio.ByteBuffer;

import static java.nio.charset.StandardCharsets.UTF_8;

/**
 * @author Antti Laisi
 */
enum StringConversions {
    ;

    static String toString(Oid oid, byte[] value) {
        switch (oid) {
            case UNSPECIFIED: // fallthrough
            case TEXT: // fallthrough
            case CHAR: // fallthrough
            case BPCHAR: // fallthrough
            case UUID: // fallthrough
            case VARCHAR:
                return new String(value, UTF_8);
            default:
                throw new SqlException("Unsupported conversion " + oid.name() + " -> String");
        }
    }

    static Character toChar(Oid oid, byte[] value) {
        switch (oid) {
            case UNSPECIFIED: // fallthrough
            case CHAR: // fallthrough
            case BPCHAR:
                return UTF_8.decode(ByteBuffer.wrap(value)).charAt(0);
            default:
                throw new SqlException("Unsupported conversion " + oid.name() + " -> String");
        }
    }
}