/*
 * Copyright © 2017 AT&T 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
 */

package org.opendaylight.transportpce.renderer.rpcs;

import com.google.common.util.concurrent.ListenableFuture;
import org.opendaylight.transportpce.renderer.provisiondevice.DeviceRendererService;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.renderer.rev170228.RendererRollbackInput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.renderer.rev170228.RendererRollbackOutput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.renderer.rev170228.RendererService;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.renderer.rev170228.ServicePathInput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.renderer.rev170228.ServicePathOutput;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.renderer.rev170228.ServicePathOutputBuilder;
import org.opendaylight.yangtools.yang.common.RpcResult;
import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DeviceRendererRPCImpl implements RendererService {

    private static final Logger LOG = LoggerFactory.getLogger(DeviceRendererRPCImpl.class);
    private DeviceRendererService deviceRenderer;

    public DeviceRendererRPCImpl(DeviceRendererService deviceRenderer) {
        this.deviceRenderer = deviceRenderer;
    }

    /**
     * This method is the implementation of the 'service-path' RESTCONF service,
     * which is one of the external APIs into the renderer application. The
     * service provides two functions:
     *
     * <p>
     * 1. Create This operation results in provisioning the device for a given
     * wavelength and a list of nodes with each node listing its termination
     * points.
     *
     * <p>
     * 2. Delete This operation results in de-provisioning the device for a
     * given wavelength and a list of nodes with each node listing its
     * termination points.
     *
     * <p>
     * The signature for this method was generated by yang tools from the
     * renderer API model.
     *
     * @param input
     *            Input parameter from the service-path yang model
     *
     * @return Result of the request
     */
    @Override
    public ListenableFuture<RpcResult<ServicePathOutput>> servicePath(ServicePathInput input) {
        if (input.getOperation().getIntValue() == 1) {
            LOG.info("Create operation request received");
            return RpcResultBuilder.success(this.deviceRenderer.setupServicePath(input, null)).buildFuture();
        } else if (input.getOperation().getIntValue() == 2) {
            LOG.info("Delete operation request received");
            return RpcResultBuilder.success(this.deviceRenderer.deleteServicePath(input)).buildFuture();
        }
        return RpcResultBuilder.success(new ServicePathOutputBuilder().setResult("Invalid operation")).buildFuture();
    }

    /**
     * Rollback created interfaces and cross connects specified by input.
     *
     * @param input Lists of created interfaces and connections per node
     * @return Success flag and nodes which failed to rollback
     */
    @Override
    public ListenableFuture<RpcResult<RendererRollbackOutput>> rendererRollback(RendererRollbackInput input) {
        return RpcResultBuilder.success(this.deviceRenderer.rendererRollback(input)).buildFuture();
    }
}