/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
package org.eclipse.aether.connector.basic;

import javax.inject.Inject;
import javax.inject.Named;

import java.util.Map;

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.spi.checksums.ProvidedChecksumsSource;
import org.eclipse.aether.spi.connector.RepositoryConnector;
import org.eclipse.aether.spi.connector.RepositoryConnectorFactory;
import org.eclipse.aether.spi.connector.checksum.ChecksumPolicyProvider;
import org.eclipse.aether.spi.connector.layout.RepositoryLayoutProvider;
import org.eclipse.aether.spi.connector.transport.TransporterProvider;
import org.eclipse.aether.spi.io.ChecksumProcessor;
import org.eclipse.aether.spi.io.PathProcessor;
import org.eclipse.aether.transfer.NoRepositoryConnectorException;

import static java.util.Objects.requireNonNull;

/**
 * A repository connector factory that employs pluggable
 * {@link org.eclipse.aether.spi.connector.transport.TransporterFactory transporters} and
 * {@link org.eclipse.aether.spi.connector.layout.RepositoryLayoutFactory repository layouts} for the transfers.
 */
@Named(BasicRepositoryConnectorFactory.NAME)
public final class BasicRepositoryConnectorFactory implements RepositoryConnectorFactory {
    public static final String NAME = "basic";
    private final TransporterProvider transporterProvider;

    private final RepositoryLayoutProvider layoutProvider;

    private final ChecksumPolicyProvider checksumPolicyProvider;

    private final PathProcessor pathProcessor;

    private final ChecksumProcessor checksumProcessor;

    private final Map<String, ProvidedChecksumsSource> providedChecksumsSources;

    private volatile float priority;

    @Inject
    public BasicRepositoryConnectorFactory(
            TransporterProvider transporterProvider,
            RepositoryLayoutProvider layoutProvider,
            ChecksumPolicyProvider checksumPolicyProvider,
            PathProcessor pathProcessor,
            ChecksumProcessor checksumProcessor,
            Map<String, ProvidedChecksumsSource> providedChecksumsSources) {
        this.transporterProvider = requireNonNull(transporterProvider, "transporter provider cannot be null");
        this.layoutProvider = requireNonNull(layoutProvider, "repository layout provider cannot be null");
        this.checksumPolicyProvider = requireNonNull(checksumPolicyProvider, "checksum policy provider cannot be null");
        this.pathProcessor = requireNonNull(pathProcessor, "path processor cannot be null");
        this.checksumProcessor = requireNonNull(checksumProcessor, "checksum processor cannot be null");
        this.providedChecksumsSources =
                requireNonNull(providedChecksumsSources, "provided checksum sources cannot be null");
    }

    @Override
    public float getPriority() {
        return priority;
    }

    /**
     * Sets the priority of this component.
     *
     * @param priority The priority.
     * @return This component for chaining, never {@code null}.
     */
    public BasicRepositoryConnectorFactory setPriority(float priority) {
        this.priority = priority;
        return this;
    }

    @Override
    public RepositoryConnector newInstance(RepositorySystemSession session, RemoteRepository repository)
            throws NoRepositoryConnectorException {
        requireNonNull(session, "session cannot be null");
        requireNonNull(repository, "repository cannot be null");

        return new BasicRepositoryConnector(
                session,
                repository,
                transporterProvider,
                layoutProvider,
                checksumPolicyProvider,
                pathProcessor,
                checksumProcessor,
                providedChecksumsSources);
    }
}
