package lu.uni.serval.ikora.evolution.utils;

/*-
 * #%L
 * Ikora Evolution
 * %%
 * Copyright (C) 2020 - 2022 University of Luxembourg
 * %%
 * 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.
 * #L%
 */

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

public class Hash {
    private static final Logger logger = LogManager.getLogger(Hash.class);

    private static MessageDigest md;

    static {
        try {
            md = MessageDigest.getInstance("SHA-512");
        } catch (NoSuchAlgorithmException e) {
            logger.error("Failed to generate SHA-512 hash generator");
        }
    }

    private Hash() {}

    public static String sha512(String text){
        md.update(text.getBytes());
        return Arrays.toString(md.digest());
    }
}
