using Microsoft.CodeAnalysis;
using NIFPGA.lvbitx;
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;

namespace ShakerFpga
{
    [Generator(LanguageNames.CSharp)]
    internal class ShakerFpgaSourceGenerator : IIncrementalGenerator
    {
        public void Initialize(IncrementalGeneratorInitializationContext context)
        {
            context.RegisterPostInitializationOutput(c =>
            {
                var names = typeof(ShakerFpgaSourceGenerator).Assembly.GetManifestResourceNames().First(x => x.IndexOf(".lvbitx")>=0);
                NIFPGA.lvbitx.Bitfile bitfile = NIFPGA.lvbitx.Parse.ParseFile(typeof(ShakerFpgaSourceGenerator).Assembly.GetManifestResourceStream(names),names);
                string s = string.Join(",", bitfile.VI.Registers.Select(x => x.Name));
                StringBuilder stringBuilder = new StringBuilder();
                stringBuilder.AppendLine("/// <auto-generated>");
                stringBuilder.AppendLine("/// This code was generated by Source Generator.");
                stringBuilder.AppendLine("/// </auto-generated>");
                stringBuilder.AppendLine("using NIFPGA;");
                stringBuilder.AppendLine("using FxpConvert.Common;");
                stringBuilder.AppendLine("namespace ShakerFpga");
                stringBuilder.AppendLine("{");
                stringBuilder.AppendLine("    public sealed class ShakerFpga");
                stringBuilder.AppendLine("    {");
                stringBuilder.AppendLine("        private static ShakerFpga myFpga;");
                stringBuilder.AppendLine("        private readonly NIFPGA.FPGA fpga;");
                stringBuilder.AppendLine("        public string BitstreamMD5 => fpga.BitstreamMD5;");
                stringBuilder.AppendLine("        public string BitfileVersion => fpga.BitfileVersion;");
                stringBuilder.AppendLine("        public string SignatureRegister => fpga.SignatureRegister;");
                stringBuilder.AppendLine("        public string BitstreamVersion => fpga.BitstreamVersion;");
                stringBuilder.AppendLine("        public string SignatureNames => fpga.SignatureNames;");
                stringBuilder.AppendLine("        public bool LastError => fpga.Error;");
                stringBuilder.AppendLine("        public NiFpga_Status LastStatus => fpga.LastStatus;");
                stringBuilder.AppendLine("        public string LastMessage => fpga.Message;");
                stringBuilder.AppendLine("        private ShakerFpga(IFxpConvert convert)");
                stringBuilder.AppendLine("        {");
                stringBuilder.AppendLine("            fpga = new FPGA(convert);");
                stringBuilder.AppendLine("        }");
                stringBuilder.AppendLine("        static ShakerFpga()");
                stringBuilder.AppendLine("        {");
                stringBuilder.AppendLine("        }");
                stringBuilder.AppendLine("        public Irq Irq => fpga.Irq;");
                stringBuilder.AppendLine("        public void Open(string bitfile, string resource, NiFpga_OpenAttribute attribute) => fpga.Open(bitfile, resource, attribute);");
                stringBuilder.AppendLine("        public void Close() => fpga.Close();");
                stringBuilder.AppendLine("        public void Run() => fpga.Run();");
                stringBuilder.AppendLine("        public void Download() => fpga.Download();");
                stringBuilder.AppendLine("        public void FpgaFinalize() => fpga.FpgaFinalize();");
                stringBuilder.AppendLine("        public void Abort() => fpga.Abort();");
                stringBuilder.AppendLine("        public void Reset() => fpga.Reset();");
                stringBuilder.AppendLine("        public static ShakerFpga CreateFpga(IFxpConvert convert)");
                stringBuilder.AppendLine("        {");
                stringBuilder.AppendLine("            myFpga ??= new ShakerFpga(convert);");
                stringBuilder.AppendLine("            return myFpga;");
                stringBuilder.AppendLine("        }");
                stringBuilder.AppendLine("        public static ShakerFpga Instance");
                stringBuilder.AppendLine("        {");
                stringBuilder.AppendLine("            get");
                stringBuilder.AppendLine("            {");
                stringBuilder.AppendLine("                if (myFpga == null)");
                stringBuilder.AppendLine("                {");
                stringBuilder.AppendLine("                    throw new Exception(\"must call first CreateFpga\");");
                stringBuilder.AppendLine("                }");
                stringBuilder.AppendLine("                return myFpga;");
                stringBuilder.AppendLine("            }");
                stringBuilder.AppendLine("        }");
                stringBuilder.AppendLine("        #region 寄存器定义");
                bitfile.VI.Registers.ForEach(x => GeneratorRegister(x, stringBuilder));
                stringBuilder.AppendLine("        #endregion");
                stringBuilder.AppendLine("        #region Fifo定义");
                bitfile.Project.DMA.ForEach(x => GeneratorFifo(x, stringBuilder));
                stringBuilder.AppendLine("        #endregion");
                stringBuilder.AppendLine("    }");
                stringBuilder.AppendLine("}");
                c.AddSource("ShakerFpga.g.cs", stringBuilder.ToString());
            });
        }
        private void GeneratorRegister(Register register, StringBuilder stringBuilder)
        {
            string protype = GetProType(register);
            string proname = $"{register.Name.Split('_')[0]}";
            proname = RemovePropertySpecialcharacters(proname);
            stringBuilder.AppendLine($"        private {protype} _{proname};");
            stringBuilder.AppendLine($"        /// <summary>");
            stringBuilder.AppendLine($"        /// {register.Name}");
            stringBuilder.AppendLine($"        /// </summary>");
            stringBuilder.AppendLine($"        public {protype} {proname}");
            stringBuilder.AppendLine("        {");
            stringBuilder.AppendLine("            get");
            stringBuilder.AppendLine("            {");
            stringBuilder.AppendLine($"                if(_" + proname + "==null)");
            stringBuilder.AppendLine("                {");
            stringBuilder.AppendLine($"                    _" + proname + $"=({protype})fpga.Properties[\"{register.Name}\"];");
            stringBuilder.AppendLine("                }");
            stringBuilder.AppendLine($"                return _" + proname + ";");
            stringBuilder.AppendLine("            }");
            stringBuilder.AppendLine("        }");
        }
        private void GeneratorFifo(DMA dma,StringBuilder stringBuilder)
        {
            string protype = GetFifoType(dma);
            string proname = $"{dma.Name.Split('_')[0]}";
            proname = RemovePropertySpecialcharacters(proname);
            stringBuilder.AppendLine($"        private {protype} _{proname};");
            stringBuilder.AppendLine($"        /// <summary>");
            stringBuilder.AppendLine($"        /// {dma.Name}");
            stringBuilder.AppendLine($"        /// </summary>");
            stringBuilder.AppendLine($"        public {protype} {proname}");
            stringBuilder.AppendLine("        {");
            stringBuilder.AppendLine("            get");
            stringBuilder.AppendLine("            {");
            stringBuilder.AppendLine($"                if(_" + proname + "==null)");
            stringBuilder.AppendLine("                {");
            stringBuilder.AppendLine($"                    _" + proname + $"=({protype})fpga.Fifos[\"{dma.Name}\"];");
            stringBuilder.AppendLine("                }");
            stringBuilder.AppendLine($"                return _" + proname + ";");
            stringBuilder.AppendLine("            }");
            stringBuilder.AppendLine("        }");
        }
        private string GetFifoType(DMA dma)
        {
            string direction = dma.Direction == "TargetToHost" ? "ReadFifo" : "WriteFifo";
            string protype = string.Empty;
            switch (dma.Datatype)
            {
                case NIFPGA.lvbitx.Datatype.Boolean:
                    protype = $"{direction}<bool>";
                    break;
                case NIFPGA.lvbitx.Datatype.Int8:
                    protype = $"{direction}<sbyte>";
                    break;
                case NIFPGA.lvbitx.Datatype.Double:
                    protype = $"{direction}<double>";
                    break;
                case NIFPGA.lvbitx.Datatype.Float:
                    protype = $"{direction}<float>";
                    break;
                case NIFPGA.lvbitx.Datatype.FXP:
                    protype = $"{(dma.Direction == "TargetToHost" ? "ReadFXPFifo" : "WriteFXPFifo")}";
                    break;
                case NIFPGA.lvbitx.Datatype.Int16:
                    protype = $"{direction}<short>";
                    break;
                case NIFPGA.lvbitx.Datatype.Int32:
                    protype = $"{direction}<int>";
                    break;
                case NIFPGA.lvbitx.Datatype.Int64:
                    protype = $"{direction}<long>";
                    break;
                case NIFPGA.lvbitx.Datatype.Uint16:
                    protype = $"{direction}<ushort>";
                    break;
                case NIFPGA.lvbitx.Datatype.Uint32:
                    protype = $"{direction}<uint>";
                    break;
                case NIFPGA.lvbitx.Datatype.Uint64:
                    protype = $"{direction}<ulong>";
                    break;
                case NIFPGA.lvbitx.Datatype.Uint8:
                    protype = $"{direction}<byte>";
                    break;
                default:
                    throw new Exception("类型错误");
            }
            return protype;
        }
        private string RemovePropertySpecialcharacters(string s)
        {
            string proname = Regex.Replace(s,@"\((.+?)\)","", RegexOptions.IgnoreCase).Replace("(", "_").Replace(")", "_").Replace("/", "_").Replace("__", "_").Trim('_');
            return char.ToUpper(proname[0]) + proname.Substring(1);
        }
        private string GetProType(Register register)
        {
            string value = "";
            switch (register.Datatype)
            {
                case NIFPGA.lvbitx.Datatype.Boolean:
                    if(!register.Indicator)
                    {
                        value = "FPGAWriteProperty<bool>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<bool>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Int8:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<sbyte>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<sbyte>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Uint8:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<byte>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<byte>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Int16:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<short>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<short>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Uint16:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<ushort>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<ushort>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Int32:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<int>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<int>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Uint32:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<uint>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<uint>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Int64:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<long>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<long>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Uint64:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<ulong>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<ulong>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Float:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<float>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<float>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Double:
                    if (!register.Indicator)
                    {
                        value = "FPGAWriteProperty<double>";
                    }
                    else
                    {
                        value = "FPGAReadProperty<double>";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.FXP:
                    if(!register.Indicator)
                    {
                        value = "FPGAFXPWriteProperty";
                    }
                    else
                    {
                        value = "FPGAFXPReadProperty";
                    }
                    break;
                case NIFPGA.lvbitx.Datatype.Array:
                    switch (register.ArrayValueType)
                    {
                        case NIFPGA.lvbitx.Datatype.Boolean:
                            if(!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<bool>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<bool>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Int8:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<sbyte>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<sbyte>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Uint8:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<byte>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<byte>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Int16:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<short>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<short>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Uint16:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<ushort>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<ushort>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Int32:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<int>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<int>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Uint32:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<uint>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<uint>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Int64:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<long>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<long>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Uint64:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<ulong>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<ulong>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Float:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<float>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<float>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.Double:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayWriteProperty<double>";
                            }
                            else
                            {
                                value = "FPGAArrayReadProperty<double>";
                            }
                            break;
                        case NIFPGA.lvbitx.Datatype.FXP:
                            if (!register.Indicator)
                            {
                                value = "FPGAArrayFXPWriteProperty";
                            }
                            else
                            {
                                value = "FPGAArrayFXPReadProperty";
                            }
                            break;
                    }
                    break;
            }
            return value;
        }
    }
}