/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.internal.batchimport.input;

import java.util.function.BiConsumer;
import org.neo4j.internal.batchimport.Monitor;
import org.neo4j.kernel.impl.store.format.RecordFormats;

public class EstimationSanityChecker {
    private final RecordFormats formats;
    private final Monitor monitor;

    public EstimationSanityChecker(RecordFormats formats, Monitor monitor) {
        this.formats = formats;
        this.monitor = monitor;
    }

    public void sanityCheck(Input.Estimates estimates) {
        sanityCheckEstimateWithMaxId(
                estimates.numberOfNodes(), formats.node().getMaxId(), monitor::mayExceedNodeIdCapacity);
        sanityCheckEstimateWithMaxId(
                estimates.numberOfRelationships(),
                formats.relationship().getMaxId(),
                monitor::mayExceedRelationshipIdCapacity);
    }

    private static void sanityCheckEstimateWithMaxId(long estimate, long max, BiConsumer<Long, Long> reporter) {
        if (estimate > max * 0.8) {
            reporter.accept(max, estimate);
        }
    }
}
