/*
 * This file is part of Dependency-Track.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * Copyright (c) OWASP Foundation. All Rights Reserved.
 */
package org.dependencytrack.util;

import org.metaeffekt.core.security.cvss.CvssVector;

public class CvssUtil {
    private CvssUtil() { }

    public static CvssVector parse(String vector) {
        if (vector == null || vector.isEmpty()) {
            return null;
        }

        final var result = CvssVector.parseVector(vector);
        if (result == null || !result.isBaseFullyDefined()) {
            return null;
        }

        // Check if the result is valid by ensuring it has a non-empty toString() that contains at least one CVSS metric
        // TODO this is an ugly workaround for https://github.com/org-metaeffekt/metaeffekt-core/issues/253
        final var parsedVector = result.toString();
        if (!parsedVector.contains(":")) {
            return null;
        }

        return result;
    }
}
