/*
 * Copyright (c) 2014 Cisco Systems, 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
 */
package org.opendaylight.controller.sal.rest.impl;

import java.util.Collection;
import java.util.Collections;

import org.opendaylight.controller.sal.core.api.Broker.ProviderSession;
import org.opendaylight.controller.sal.core.api.Provider;
import org.opendaylight.controller.sal.core.api.data.DataBrokerService;
import org.opendaylight.controller.sal.core.api.model.SchemaService;
import org.opendaylight.controller.sal.core.api.mount.MountService;
import org.opendaylight.controller.sal.rest.api.RestConnector;
import org.opendaylight.controller.sal.restconf.impl.BrokerFacade;
import org.opendaylight.controller.sal.restconf.impl.ControllerContext;
import org.opendaylight.controller.sal.streams.websockets.WebSocketServer;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.PortNumber;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.model.api.SchemaServiceListener;

public class RestconfProviderImpl implements Provider, AutoCloseable, RestConnector {

    public final static String NOT_INITALIZED_MSG = "Restconf is not initialized yet. Please try again later";

    private ListenerRegistration<SchemaServiceListener> listenerRegistration;
    private PortNumber port;
    public void setWebsocketPort(PortNumber port) {
        this.port = port;
    }

    private Thread webSocketServerThread;

    @Override
    public void onSessionInitiated(ProviderSession session) {
        DataBrokerService dataService = session.getService(DataBrokerService.class);

        BrokerFacade.getInstance().setContext(session);
        BrokerFacade.getInstance().setDataService(dataService);

        SchemaService schemaService = session.getService(SchemaService.class);
        listenerRegistration = schemaService.registerSchemaServiceListener(ControllerContext.getInstance());
        ControllerContext.getInstance().setSchemas(schemaService.getGlobalContext());
        ControllerContext.getInstance().setMountService(session.getService(MountService.class));

        webSocketServerThread = new Thread(WebSocketServer.createInstance(port.getValue().intValue()));
        webSocketServerThread.setName("Web socket server on port " + port);
        webSocketServerThread.start();
    }

    @Override
    public Collection<ProviderFunctionality> getProviderFunctionality() {
        return Collections.emptySet();
    }

    @Override
    public void close() {
        if (listenerRegistration != null) {
            listenerRegistration.close();
        }
        webSocketServerThread.interrupt();
    }
}