///////////////////////////////////////////////////////////////////////////////
//
//  Microsoft Research Singularity
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
//  File:   DriverResourceTransform.sg
//
//  Creates startup boilerplate code from Resource descriptions.
//

using Microsoft.SingSharp;
using Microsoft.Contracts;
using Microsoft.Singularity;
using Microsoft.Singularity.Channels;
using Microsoft.Singularity.Extending;
using Microsoft.Singularity.Directory;
using Microsoft.Singularity.Configuration;
using Microsoft.Singularity.V1.Services;
using System;

namespace Microsoft.Singularity.Applications{

    transform ApplicationResourceTransform
        where $EndpointType : unmanaged struct, Endpoint, ITracked
        where $EpAttr : EndpointAttribute
    {
        [ConsoleCategory(*, DefaultAction=true)]
        internal class $DefaultCategory
        {
            // only match, don't implement
            internal $DefaultCategory();

            internal int AppMain();

            // Single entry point
            generate public static int Main(string[] args) {
#if SHOW_ARGS
                if (args != null) {
                    foreach(string arg in args) {
                        DebugStub.WriteLine("startup argument '{0}'", __arglist(arg));
                    }
                }
#endif
                if (args == null || args.Length < 2) {
                    $DefaultCategory config = new $DefaultCategory();
                    return config.AppMain();
                }

                string action = args[1];
                forall (; $Action in $$NamedCategories ;) {
                    if ($Action.$name == action) {
                        $Action config = new $Action();
                        return config.AppMain();
                    }
                }
                throw new Exception(String.Format("Unrecognized action {0}", action));
            }
        }

        [ConsoleCategory(*, Action=$name)]
        internal class $$NamedCategories {
            // only match, don't implement
            internal $$NamedCategories();

            internal int AppMain();
        }

        [ConsoleCategory(*)]
        internal class $$Categories {

            [$EpAttr(*)]
            TRef<$EndpointType,$State> $$endpoints;

            [StringParameter(*)]
            string $$strings;

            [StringArrayParameter(*)]
            string[] $$stringArrays;

            [LongParameter(*)]
            long $$longs;

            [BoolParameter(*)]
            bool $$bools;

            //            [NotDelayed]
            implement internal $$Categories() {
                //DebugStub.WriteLine("ConsoleCategory action '{0}' applied", __arglist(this.GetType().ToString()));

                int index;
                ParameterCode code;

                index = 0;
                forall ( ; $s in $$strings ; ) {
                    string stringParam;
                    code = Process.GetStartupStringArg(index, out stringParam);
                    if (code != ParameterCode.Success) {
                        throw new ArgumentException(String.Format("error acquiring startup string array {0}. code={1}", index, code));
                    }
                    this.$s = stringParam;
                    //DebugStub.WriteLine("got string {0}=({1})",__arglist(index, $s));
                    ++index;
                }

                index = 0;
                forall ( ; $sa in $$stringArrays ; ) {
                    string[] stringArrayParam;
                    code = Process.GetStartupStringArrayArg(index, out stringArrayParam );
                    if (code != ParameterCode.Success) {
                        throw new ArgumentException(String.Format("error acquiring startup string {0}. code={1}", index, code));
                    }
                    this.$sa = stringArrayParam;
                    //DebugStub.WriteLine("got string {0}=({1})",__arglist(index, $s));
                    ++index;
                }

                index = 0;
                forall ( ; $l in $$longs ; ) {
                    long longArg;
                    code = ProcessService.GetStartupLongArg(index, out longArg);
                    if (code != ParameterCode.Success) {
                        throw new ArgumentException(String.Format("error acquiring startup integer {0}. code={1}", index, code));
                    }
                    this.$l = longArg;
                    //DebugStub.WriteLine("got long {0}=({1})",__arglist(index, $l));
                    ++index;
                }

                index = 0;
                forall ( ; $b in $$bools ; ) {
                    bool b;
                    code = ProcessService.GetStartupBoolArg(index, out b);
                    if (code != ParameterCode.Success) {
                        throw new ArgumentException(String.Format("error acquiring startup bool {0}. code={1}", index, code));
                    }
                    this.$b = b;
                    //DebugStub.WriteLine("got bool {0}=({1})",__arglist(index, b));
                    ++index;
                }
                index = 0;
                forall ( ; $e in $$endpoints; ){
                    if ( index == 0  || index == 1) {
                        //DebugStub.WriteLine("transform skipping pipe at {0}",__arglist(index));
                    }
                    else {
                        $e.$EndpointType* in ExHeap opt($e.$State) ep = Process.GetStartupEndpoint(index)
                            as $e.$EndpointType* in ExHeap opt($e.$State);
                        if (ep == null) {
                            throw new ArgumentException(String.Format("missing startup endpoint {0}", index));
                        }
                        $e = new TRef<$e.$EndpointType, $e.$State> (ep);
                        //DebugStub.WriteLine("getting endpoint at {0}",__arglist(index));
                    }
                    ++index;

                }

            }

            // Category specific entry point
            internal int AppMain();

        }

    }
}