/*
 * Hello Minecraft! Launcher
 * Copyright (C) 2020  huangyuhui <huanghongxun2008@126.com> and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package org.jackhuang.hmcl.util.gson;

import com.google.gson.JsonParseException;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;

import java.io.IOException;
import java.util.UUID;
import java.util.regex.Pattern;

/**
 *
 * @author huang
 */
public final class UUIDTypeAdapter extends TypeAdapter<UUID> {

    public static final UUIDTypeAdapter INSTANCE = new UUIDTypeAdapter();

    @Override
    public void write(JsonWriter writer, UUID value) throws IOException {
        writer.value(value == null ? null : fromUUID(value));
    }

    @Override
    public UUID read(JsonReader reader) throws IOException {
        try {
            return fromString(reader.nextString());
        } catch (IllegalArgumentException e) {
            throw new JsonParseException("UUID malformed");
        }
    }

    public static String fromUUID(UUID value) {
        return value.toString().replace("-", "");
    }

    private static final Pattern regex = Pattern.compile("(\\w{8})(\\w{4})(\\w{4})(\\w{4})(\\w{12})");

    public static UUID fromString(String input) {
        return UUID.fromString(regex.matcher(input).replaceFirst("$1-$2-$3-$4-$5"));
    }

}
