////////////////////////////////////////////////////////////////////////////////
//
//  Microsoft Research Singularity
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
//  File:   ptest.sg
//
//  Note:   test parameter matching code 
//
using System;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using System.Threading;

using Microsoft.SingSharp;
using Microsoft.Contracts;
using Microsoft.Singularity;
using Microsoft.Singularity.Channels;
using Microsoft.Singularity.Directory;
using Microsoft.Singularity.Io;
using Microsoft.Singularity.Configuration;

using Microsoft.Contracts;
using Microsoft.SingSharp.Reflection;
using Microsoft.Singularity.Applications;
[assembly: Transform(typeof(ApplicationResourceTransform))]

namespace app
    {
        [ConsoleCategory(HelpMessage="Parameter test program.", 
                         DefaultAction=true)]
        internal class PlayConfiguration 
        {
            private const string help1 = "this is a help message"; 
            private const string helpForever = "this is a help for forever"; 
            private const string helpNumThreads = "Number Of Threads to start"; 
            private const string helpIsBool = "this is a help for isBool"; 

            [InputEndpoint("data")]
            //[Endpoint]
            public readonly TRef<UnicodePipeContract.Exp:READY> Stdin;

            [OutputEndpoint("data")]
            //[Endpoint]
            public readonly TRef<UnicodePipeContract.Imp:READY> Stdout;

            [Endpoint]
            public readonly TRef<SoundDeviceContract.Imp:Start> ImpRef;

            [StringParameter( "filename", Mandatory=false, Default="hello world")]
            internal string foo4;

            [StringArrayParameter( "EverythingElse", Mandatory=false)]
            internal string[] Args;

            [StringParameter( "filename", Mandatory=false, Default="/fs/init", Position=0)]
            internal string file;

            [StringParameter( "string2", Mandatory=false)]
            internal string string2;

            [LongParameter( "numThreads", Mandatory=true, Default=1, HelpMessage=helpNumThreads)]
            internal long numThreads;

            [LongParameter( "numThreads2", Mandatory=false, Default=32, Position=1)]
            internal long numThreads2;

            [BoolParameter( "isBool", Mandatory=false, Default=false, HelpMessage=helpIsBool) ]
            internal  bool isBool;

            [BoolParameter( "isBool2", Mandatory=false, Default=true)]
            internal  bool isBool2;

            [BoolParameter( "forever", Mandatory=false, Default=false, HelpMessage=helpForever) ]
            internal  bool forever;

            reflective internal PlayConfiguration();

            internal int AppMain() {
                return Play.AppMain(this);
            }
        }


        [ConsoleCategory(Action="action1", HelpMessage="Test action1.")]
        internal class Action1
        {
            [InputEndpoint("data")]
            public readonly TRef<UnicodePipeContract.Exp:READY> Stdin;

            [OutputEndpoint("data")]
            public readonly TRef<UnicodePipeContract.Imp:READY> Stdout;

            [LongParameter( "count", HelpMessage="count", Default=1)]
            internal long count;

            [NotDelayed]
            reflective internal Action1();

            internal int AppMain() {
                Console.WriteLine("Action1 invoked: count = {0}", count);
                return 0;
            }
        }


    // End of [TODO] marker

    public class Play
    {
        private static SoundDeviceContract.Imp:Ready OpenSoundDevice(PlayConfiguration! config)
        {
            // extract imp handed in as part of process creation
            SoundDeviceContract.Imp! imp = (config.ImpRef).Acquire();

            // get it into the ready state
            Console.WriteLine("[{0}] Waiting for SB channel.", Thread.CurrentThread.GetThreadId());
            switch receive
            {
                case imp.Success():
                    Console.WriteLine("[{0}] Got SB channel.", Thread.CurrentThread.GetThreadId());
                    break;
                case imp.ContractNotSupported():
                    delete imp;
                    throw new Exception("Didn't Get SB channel. (ContractNotSupported)");
                case imp.ChannelClosed():
                    delete imp;
                    throw new Exception("Didn't Get SB channel. (Channel closed)");
            }
            return imp;
        }

        internal static int AppMain(PlayConfiguration! config)
        {
            Console.WriteLine("isBool ={0}", config.isBool); 
            Console.WriteLine("isBool2 ={0}", config.isBool2); 
            Console.WriteLine("forever ={0}", config.forever); 
            Console.WriteLine("foo4 ={0}", config.foo4); 
            Console.WriteLine("numThreads ={0}", config.numThreads); 
            Console.WriteLine("numThreads2 ={0}", config.numThreads2); 
            Console.WriteLine("string2 ={0}", config.string2); 
    
            string[] s = config.Args; 
            if (s != null) {
                for (int i=0; i< s.Length; i++) {
                    Console.WriteLine("EverythingElse[{0}]={1}",i,s[i]);
                } 
            } 
    
            if (config.string2 == null) {
                Console.WriteLine("string 2 is null (default)"); 
            }
            if (WavAudio.Content == null || WavAudio.Content.Length == 0) {
                Console.WriteLine("No WAV audio to play.");
                return 1;
            }

             if ( config.numThreads > 0 ) {
                for (int i=0; i < config.numThreads; i++) {
                    Thread t = new Thread(new ThreadStart(new Play(config).DoPlayThread));
                    t.Start();
                }
             
            }
            else {
                return DoPlay(config);
            }

            return 0;
        }

        PlayConfiguration! config;
        private Play(PlayConfiguration! config) {
            this.config = config;
        }

        public void DoPlayThread() {
            DoPlay(this.config);
        }

        static int DoPlay(PlayConfiguration! config) {
            SoundDeviceContract.Imp audio = OpenSoundDevice(config);
            if (audio == null) {
                Console.WriteLine("Couldn't open audio device.");
                return 2;
            }

            int threadId = Thread.CurrentThread.GetThreadId();

            assume WavAudio.Content != null;

            try {
                for (int i = 0; i < WavAudio.Content.Length; i++) {
                    Console.WriteLine("[{1}] Playing WAV audio {0}.", i, threadId);

                    byte[] wav = (!)WavAudio.Content[i];

                    byte[] in ExHeap buffer = Bitter.FromByteArray(wav);

                        // Copy contents into buffer WavAudio.Content[i]

                        audio.SendPlayWav(buffer);
                        switch receive
                        {
                            case audio.RecvAckPlayWav(oldbuffer):
                                Console.WriteLine("[{1}] Done playing WAV audio {0}.", i,
                                                  threadId);
                            delete oldbuffer;
                            break;

                        case audio.RecvNakPlayWav(oldbuffer):
                            Console.WriteLine("[{1}] Failed to play WAV audio {0}.",
                                              i, threadId);
                            delete oldbuffer;
                            break;

                        case audio.ChannelClosed():
                            Console.WriteLine("[{1}] SoundDevice channel closed unexpectedly {0}.",
                                                  i, threadId);
                            return 1;
                    }
                }
            }
            finally {
                delete audio;
            }
            return 0;
        }
    }
}