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/*
 * ============LICENSE_START=======================================================
 * Cert Service
 * ================================================================================
 * Copyright (C) 2020-2021 Nokia. All rights reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.oom.certservice.certification.conversion;

import java.util.Base64;
import java.util.Objects;
import java.util.Optional;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class StringBase64 {

    private final String value;
    private final Base64.Decoder decoder = Base64.getDecoder();
    private static final Logger LOGGER = LoggerFactory.getLogger(StringBase64.class);

    public StringBase64(String value) {
        this.value = value;
    }

    public Optional<String> asString() {
        try {
            String decodedString = new String(decoder.decode(value));
            return Optional.of(decodedString);
        } catch (RuntimeException e) {
            LOGGER.error("Exception occurred during decoding:", e);
            return Optional.empty();
        }
    }

    @Override
    public boolean equals(Object otherObject) {
        if (this == otherObject) {
            return true;
        }
        if (otherObject == null || getClass() != otherObject.getClass()) {
            return false;
        }
        StringBase64 that = (StringBase64) otherObject;
        return Objects.equals(value, that.value);
    }

    @Override
    public int hashCode() {
        return value.hashCode();
    }
}