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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * 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
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.streams.matchers;

import org.graylog2.plugin.Message;
import org.graylog2.plugin.streams.StreamRule;

import java.util.Optional;

public class AlwaysMatcher implements StreamRuleMatcher {
    @Override
    public boolean match(Message msg, StreamRule rule) {
        return Optional.ofNullable(rule.getInverted())
                // When this rule is inverted, it should never match
                .map(inverted -> !inverted)
                // If `inverted` is `null`, we always return `true`
                .orElse(true);
    }
}