/*
 * 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.internal.impl;

import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.impl.UpdateCheck;
import org.eclipse.aether.impl.UpdateCheckManager;
import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.transfer.ArtifactNotFoundException;
import org.eclipse.aether.transfer.ArtifactTransferException;
import org.eclipse.aether.transfer.MetadataNotFoundException;
import org.eclipse.aether.transfer.MetadataTransferException;

import static java.util.Objects.requireNonNull;

class StaticUpdateCheckManager implements UpdateCheckManager {

    private final boolean checkRequired;

    private final boolean localUpToDate;

    public StaticUpdateCheckManager(boolean checkRequired) {
        this(checkRequired, !checkRequired);
    }

    public StaticUpdateCheckManager(boolean checkRequired, boolean localUpToDate) {
        this.checkRequired = checkRequired;
        this.localUpToDate = localUpToDate;
    }

    @Override
    public void touchMetadata(RepositorySystemSession session, UpdateCheck<Metadata, MetadataTransferException> check) {
        requireNonNull(session, "session cannot be null");
        requireNonNull(check, "check cannot be null");
    }

    @Override
    public void touchArtifact(RepositorySystemSession session, UpdateCheck<Artifact, ArtifactTransferException> check) {
        requireNonNull(session, "session cannot be null");
        requireNonNull(check, "check cannot be null");
    }

    @Override
    public void checkMetadata(RepositorySystemSession session, UpdateCheck<Metadata, MetadataTransferException> check) {
        requireNonNull(session, "session cannot be null");
        requireNonNull(check, "check cannot be null");
        check.setRequired(checkRequired);

        if (check.getLocalLastUpdated() != 0L && localUpToDate) {
            check.setRequired(false);
        }
        if (!check.isRequired() && !check.getFile().isFile()) {
            check.setException(new MetadataNotFoundException(check.getItem(), check.getRepository()));
        }
    }

    @Override
    public void checkArtifact(RepositorySystemSession session, UpdateCheck<Artifact, ArtifactTransferException> check) {
        requireNonNull(session, "session cannot be null");
        requireNonNull(check, "check cannot be null");
        check.setRequired(checkRequired);

        if (check.getLocalLastUpdated() != 0L && localUpToDate) {
            check.setRequired(false);
        }
        if (!check.isRequired() && !check.getFile().isFile()) {
            check.setException(new ArtifactNotFoundException(check.getItem(), check.getRepository()));
        }
    }
}
