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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.graylog.plugins.views.search;

import org.graylog2.indexer.ranges.IndexRange;
import org.graylog2.plugin.streams.Stream;

import java.util.Collections;
import java.util.Set;
import java.util.stream.Collectors;

public class IndexRangeContainsOneOfStreams {

    public boolean test(final IndexRange indexRange,
                        final Set validStreams) {
        // If index range is incomplete, check the prefix against the valid index sets.
        if (indexRange.streamIds() == null) {
            return validStreams.stream()
                    .map(Stream::getIndexSet)
                    .anyMatch(indexSet -> indexSet.isManagedIndex(indexRange.indexName()));
        }

        final Set validStreamIds = validStreams.stream()
                .map(Stream::getId)
                .collect(Collectors.toSet());
        // Otherwise check if the index range contains any of the valid stream ids.
        return !Collections.disjoint(indexRange.streamIds(), validStreamIds);
    }
}