///////////////////////////////////////////////////////////////////////////////
//
//  Microsoft Research Singularity
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
//  File:   TulipController.sg
//
//

using Microsoft.Singularity.Channels;
using Microsoft.Singularity.Io;
using Microsoft.Singularity.Io.Net;
using Microsoft.Singularity.Directory;
using Microsoft.Singularity.Extending;
using Microsoft.Singularity.V1.Services;

using System;
using System.Threading;

namespace Microsoft.Singularity.Drivers.Network.Tulip
{
    internal class TulipController
    {
        public static int DriverMain(TulipResources! resources)
        {
            ExtensionContract.Exp! ep = (resources.ec).Acquire();
            ServiceProviderContract.Exp! sp = (resources.nicsp).Acquire();

            Tulip! device = new Tulip(resources);
            device.Initialize();

            ep.SendSuccess();
            try {
                for (bool run = true; run;) {
                    switch receive {
                        case sp.Connect(ServiceContract.Exp:Start! exp):
                            NicDeviceContract.Exp nd = exp as NicDeviceContract.Exp;
                            if (nd != null) {
                                Tracing.Log(Tracing.Debug, "Connect success.");
                                sp.SendAckConnect();
                                TulipDeviceChannel.CreateThread(device, nd);
                            }
                            else {
                                Tracing.Log(Tracing.Error, "Connect failed.");
                                sp.SendNackConnect(exp);
                            }
                            break;

                        case sp.ChannelClosed():
                            device.Shutdown();
                            run = false;
                            break;

                        case ep.Shutdown():
                            device.Shutdown();
                            ep.SendAckShutdown();
                            break;

                        case ep.ChannelClosed():
                            device.Shutdown();
                            run = false;
                            break;

                        case unsatisfiable:
                            DebugStub.Break();
                            break;
                    }
                }
            }
            finally {
                delete ep;
                delete sp;
            }
            return 0;
        }

        public static int DriverMain(PnicResources! resources)
        {
            DebugStub.Break();
            return 0;
        }
    }
}