/*******************************************************************************
 * Copyright (c) 2008, 2011 Sonatype Inc. and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Sonatype Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.tycho.p2.impl.publisher.repo;

import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactDescriptor;
import org.eclipse.equinox.p2.core.ProvisionException;
import org.eclipse.equinox.p2.metadata.IArtifactKey;
import org.eclipse.equinox.p2.publisher.AbstractPublisherApplication;
import org.eclipse.equinox.p2.query.IQuery;
import org.eclipse.equinox.p2.query.IQueryResult;
import org.eclipse.equinox.p2.query.IQueryable;
import org.eclipse.equinox.p2.repository.artifact.IArtifactDescriptor;
import org.eclipse.equinox.p2.repository.artifact.IArtifactRequest;
import org.eclipse.equinox.p2.repository.artifact.spi.AbstractArtifactRepository;

@SuppressWarnings("restriction")
public class TransientArtifactRepository extends AbstractArtifactRepository {

    protected Set<IArtifactDescriptor> descriptors = new LinkedHashSet<>();

    private Set<IArtifactKey> keys = new LinkedHashSet<>();

    public TransientArtifactRepository() {
        super(null, "TransientArtifactRepository", TransientArtifactRepository.class.getName(), "1.0.0", null, null,
                null, newProperties());
        super.setLocation(URI.create("memory:" + getClass().getName() + "@"
                + Integer.toHexString(System.identityHashCode(this))));
    }

    private static Map<String, String> newProperties() {
        Map<String, String> properties = new LinkedHashMap<>();
        properties.put(AbstractPublisherApplication.PUBLISH_PACK_FILES_AS_SIBLINGS, "true");
        return properties;
    }

    @Override
    public boolean contains(IArtifactDescriptor descriptor) {
        return descriptors.contains(descriptor);
    }

    @Override
    public boolean contains(IArtifactKey key) {
        return keys.contains(key);
    }

    @Override
    public IStatus getArtifact(IArtifactDescriptor descriptor, OutputStream destination, IProgressMonitor monitor) {
        throw new UnsupportedOperationException();
    }

    @Override
    public IArtifactDescriptor[] getArtifactDescriptors(IArtifactKey key) {
        throw new UnsupportedOperationException();
    }

    @Override
    public IQueryResult<IArtifactKey> query(IQuery<IArtifactKey> query, IProgressMonitor monitor) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public IQueryable<IArtifactDescriptor> descriptorQueryable() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public IStatus getArtifacts(IArtifactRequest[] requests, IProgressMonitor monitor) {
        throw new UnsupportedOperationException();
    }

    @Override
    public OutputStream getOutputStream(IArtifactDescriptor descriptor) throws ProvisionException {
        addDescriptor(descriptor);
        return new OutputStream() {
            @Override
            public void write(int b) throws IOException {
            }
        };
    }

    @Override
    public void addDescriptor(IArtifactDescriptor descriptor) {
        keys.add(descriptor.getArtifactKey());
        descriptors.add(descriptor);
    }

    @Override
    public void addDescriptors(IArtifactDescriptor[] descriptors) {
        for (IArtifactDescriptor descriptor : descriptors) {
            addDescriptor(descriptor);
        }
    }

    @Override
    public IStatus getRawArtifact(IArtifactDescriptor descriptor, OutputStream destination, IProgressMonitor monitor) {
        throw new UnsupportedOperationException();
    }

    public Set<IArtifactDescriptor> getArtifactDescriptors() {
        return descriptors;
    }

    @Override
    public boolean isModifiable() {
        return true;
    }

    @Override
    public IArtifactDescriptor createArtifactDescriptor(IArtifactKey key) {
        // this is necessary for MavenPropertiesAdvice to work
        return new SimpleArtifactDescriptor(key);
    }
}
