/*
 * 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;

import static java.util.Comparator.comparingLong;

import java.io.IOException;
import java.io.PrintStream;
import java.util.NoSuchElementException;
import org.neo4j.annotations.service.Service;
import org.neo4j.configuration.Config;
import org.neo4j.function.ThrowingSupplier;
import org.neo4j.internal.batchimport.input.Collector;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.layout.DatabaseLayout;
import org.neo4j.io.pagecache.context.CursorContextFactory;
import org.neo4j.io.pagecache.tracing.PageCacheTracer;
import org.neo4j.kernel.api.index.IndexProvidersAccess;
import org.neo4j.kernel.impl.transaction.log.LogTailMetadata;
import org.neo4j.logging.internal.LogService;
import org.neo4j.memory.MemoryTracker;
import org.neo4j.scheduler.JobScheduler;
import org.neo4j.service.NamedService;
import org.neo4j.service.Services;
import org.neo4j.storageengine.api.LogFilesInitializer;

@Service
public abstract class IncrementalBatchImporterFactory implements NamedService {
    private final int priority;

    protected IncrementalBatchImporterFactory(int priority) {
        this.priority = priority;
    }

    public abstract IncrementalBatchImporter instantiate(
            DatabaseLayout databaseLayout,
            FileSystemAbstraction fileSystem,
            PageCacheTracer cacheTracer,
            Configuration config,
            LogService logService,
            PrintStream progressOutput,
            boolean verboseProgressOutput,
            AdditionalInitialIds additionalInitialIds,
            ThrowingSupplier<LogTailMetadata, IOException> logTailMetadataSupplier,
            Config dbConfig,
            Monitor monitor,
            JobScheduler jobScheduler,
            Collector badCollector,
            LogFilesInitializer logFilesInitializer,
            IndexImporterFactory indexImporterFactory,
            MemoryTracker memoryTracker,
            CursorContextFactory contextFactory,
            IndexProvidersAccess indexProvidersAccess);

    public static IncrementalBatchImporterFactory withHighestPriority() {
        return Services.loadAll(IncrementalBatchImporterFactory.class).stream()
                .max(comparingLong(f -> f.priority))
                .orElseThrow(() -> new NoSuchElementException("No batch importers found"));
    }
}
