/*
 * 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) Steve Springett. All Rights Reserved.
 */
package org.dependencytrack.policy;

import java.util.ArrayList;
import java.util.List;
import org.dependencytrack.model.Component;
import org.dependencytrack.model.Policy;
import org.dependencytrack.model.PolicyCondition;
import alpine.common.logging.Logger;

/**
 * Evaluates a components SWID tagId against a policy.
 *
 * @author Steve Springett
 * @since 4.0.0
 */
public class SwidTagIdPolicyEvaluator extends AbstractPolicyEvaluator {

    private static final Logger LOGGER = Logger.getLogger(SwidTagIdPolicyEvaluator.class);

    /**
     * {@inheritDoc}
     */
    @Override
    public PolicyCondition.Subject supportedSubject() {
        return PolicyCondition.Subject.SWID_TAGID;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public List<PolicyConditionViolation> evaluate(final Policy policy, final Component component) {
        final List<PolicyConditionViolation> violations = new ArrayList<>();
        for (final PolicyCondition condition: super.extractSupportedConditions(policy)) {
            LOGGER.debug("Evaluating component (" + component.getUuid() + ") against policy condition (" + condition.getUuid() + ")");
            if (PolicyCondition.Operator.MATCHES == condition.getOperator()) {
                if (Matcher.matches(component.getSwidTagId(), condition.getValue())) {
                    violations.add(new PolicyConditionViolation(condition, component));
                }
            } else if (PolicyCondition.Operator.NO_MATCH == condition.getOperator()) {
                if (!Matcher.matches(component.getSwidTagId(), condition.getValue())) {
                    violations.add(new PolicyConditionViolation(condition, component));
                }
            }
        }
        return violations;
    }

}
