/*
 *                     GNU AFFERO GENERAL PUBLIC LICENSE
 *                       Version 3, 19 November 2007
 *  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 *  Everyone is permitted to copy and distribute verbatim copies
 *  of this license document, but changing it is not allowed.
 */

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Text;
using System.Text.RegularExpressions;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Util;
using Newtonsoft.Json;
using UVtools.Core.Extensions;
using UVtools.Core.Operations;

namespace UVtools.Core.FileFormats
{
    public class ZCodexFile : FileFormat
    {
        #region Constants

        private const string GCodeStart = "G28\nG21\nG91\nM17\n";
        private const string GCodeKeywordSlice = "<Slice>";
        private const string GCodeKeywordDelayBlank = "<Delay_blank>";
        private const string GCodeKeywordDelayModel = "<Delay_model>";
        private const string GCodeKeywordDelaySupportPart = "<Delay_support_part>";
        private const string GCodeKeywordDelaySupportFull = "<Delay_support_full>";
        private const string FolderImages = "ResinSlicesData";
        private const string FolderImageName = "Slice";
        #endregion

        #region Sub Classes

        public class ResinMetadata
        {
            public class LayerData
            {
                public uint Layer { get; set; }
                public float UsedMaterialVolume { get; set; }

            }

            public string Guid { get; set; } = "07452AC2-7494-4576-BA60-BFEA8815F917";
            public string Material { get; set; }
            public uint MaterialId { get; set; }
            public float LayerThickness { get; set; }
            public uint PrintTime { get; set; }
            public uint LayerTime { get; set; }
            public uint BottomLayersTime { get; set; }
            public uint AdditionalSupportLayerTime { get; set; }
            public ushort BottomLayersNumber { get; set; }
            public uint BlankingLayerTime { get; set; }
            public float TotalMaterialVolumeUsed { get; set; }
            public float TotalMaterialWeightUsed { get; set; }
            public uint TotalLayersCount { get; set; }
            public bool DisableSettingsChanges { get; set; }

            public List<LayerData> Layers { get; set; } = new List<LayerData>();
        }

        public class UserSettingsdata
        {
            public uint MaxLayer { get; set; }
            public string PrintTime { get; set; }
            public float MaterialVolume { get; set; }
            public byte IsAdvanced { get; set; }
            public string Printer { get; set; } = "Zortrax Inkspire";
            public string MaterialType { get; set; }
            public uint MaterialId { get; set; }
            public string LayerThickness { get; set; }
            public byte RaftEnabled { get; set; }
            public float RaftHeight { get; set; }
            public float RaftOffset { get; set; }
            public byte ModelLiftEnabled { get; set; }
            public float ModelLiftHeight { get; set; }
            public byte CrossSupportEnabled { get; set; }
            public uint LayerExposureTime { get; set; }
            //public uint LayerThicknessesDisplayTime { get; set; } arr
            public uint ExposureOffTime { get; set; } = 5;
            public uint BottomLayerExposureTime { get; set; }
            public uint BottomLayersCount { get; set; }
            public byte SupportAdditionalExposureEnabled { get; set; }
            public uint SupportAdditionalExposureTime { get; set; }
            public float ZLiftDistance { get; set; } = 5;
            public float ZLiftRetractRate { get; set; } = 100;
            public float ZLiftFeedRate { get; set; } = 100;
            public byte AntiAliasing { get; set; } = 0;
            public float XCorrection { get; set; }
            public float YCorrection { get; set; }
            public byte HollowEnabled { get; set; }
            public float HollowThickness { get; set; }
            public byte InfillDensity { get; set; }
        }

        public class ZCodeMetadata
        {
            public class MaterialsData
            {
                public string ExtruderType { get; set; }
                public uint Id { get; set; }
                public string Name { get; set; }
                public uint Usage { get; set; }
                public uint Temperature { get; set; }
            }

            public string ZCodexVersion { get; set; } = "2.0.0.0";
            public string SoftwareVersion { get; set; } = "2.12.2.0";
            public string MinFirmwareVersion { get; set; } = "20013";
            public uint PrinterModelEnumId { get; set; } = 40;
            public string PrinterName { get; set; } = "Inkspire";
            public List<MaterialsData> Materials { get; set; }
            public byte HeatbedTemperature { get; set; }
            public byte ChamberTemperature { get; set; }
            public uint CommandCount { get; set; }
            public uint PrintTime { get; set; }
            public float NozzleDiameter { get; set; }
            public string PrintBoundingBox { get; set; }
            public string Pauses { get; set; }
            public string MaterialUsages { get; set; }
        }

        public class LayerData
        {
            public int SupportLayerFileIndex { get; set; } = -1;
            public int LayerFileIndex { get; set; } = -1;
            public ZipArchiveEntry SupportLayerEntry { get; set; }
            public ZipArchiveEntry LayerEntry { get; set; }

            public bool HaveSupportLayer => !ReferenceEquals(SupportLayerEntry, null);
        }

        #endregion

        #region Properties
        public ResinMetadata ResinMetadataSettings { get; set; } = new ResinMetadata();
        public UserSettingsdata UserSettings { get; set; } = new UserSettingsdata();
        public ZCodeMetadata ZCodeMetadataSettings { get; set; } = new ZCodeMetadata();

        public List<LayerData> LayersSettings { get; } = new List<LayerData>();

        public override FileFormatType FileType => FileFormatType.Archive;

        public override FileExtension[] FileExtensions { get; } = {
            new FileExtension("zcodex", "Z-Suite ZCodex Files")
        };

        public override Type[] ConvertToFormats { get; } = null;

        public override PrintParameterModifier[] PrintParameterModifiers { get; } = {
            PrintParameterModifier.BottomLayerCount,
            PrintParameterModifier.BottomExposureSeconds,
            PrintParameterModifier.ExposureSeconds,


            PrintParameterModifier.LiftHeight,
            PrintParameterModifier.RetractSpeed,
            PrintParameterModifier.LiftSpeed,
        };

        public override byte ThumbnailsCount { get; } = 1;

        public override System.Drawing.Size[] ThumbnailsOriginalSize { get; } = {new System.Drawing.Size(320, 180)};

        public override uint ResolutionX
        {
            get => 1440;
            set => throw new NotImplementedException();
        }

        public override uint ResolutionY
        {
            get => 2560;
            set => throw new NotImplementedException();
        }

        public override float DisplayWidth
        {
            get => 74.67f;
            set {}
        }
        public override float DisplayHeight
        {
            get => 132.88f;
            set { }
        }

        public override byte AntiAliasing => UserSettings.AntiAliasing;

        public override float LayerHeight
        {
            get => ResinMetadataSettings.LayerThickness;
            set
            {
                ResinMetadataSettings.LayerThickness = value;
                RaisePropertyChanged();
            }
        }

        public override uint LayerCount
        {
            set
            {
                UserSettings.MaxLayer = LastLayerIndex;
                ResinMetadataSettings.TotalLayersCount = LayerCount;
                RaisePropertyChanged();
                RaisePropertyChanged(nameof(NormalLayerCount));
            }
        }

        public override ushort BottomLayerCount
        {
            get => ResinMetadataSettings.BottomLayersNumber;
            set
            {
                ResinMetadataSettings.BottomLayersNumber = value;
                RaisePropertyChanged();
            }
        }

        public override float BottomExposureTime
        {
            get => (float) Math.Round(UserSettings.BottomLayerExposureTime / 1000f, 2);
            set
            {
                UserSettings.BottomLayerExposureTime = (uint) (value * 1000f);
                RaisePropertyChanged();
            }
        }

        public override float ExposureTime
        {
            get => (float) Math.Round(UserSettings.LayerExposureTime / 1000f, 2);
            set
            {
                UserSettings.LayerExposureTime = (uint) (value * 1000f);
                RaisePropertyChanged();
            }
        }

        public override float LiftHeight
        {
            get => UserSettings.ZLiftDistance;
            set
            {
                UserSettings.ZLiftDistance = value;
                RaisePropertyChanged();
            }
        }

        public override float LiftSpeed
        {
            get => UserSettings.ZLiftFeedRate;
            set
            {
                UserSettings.ZLiftFeedRate = value;
                RaisePropertyChanged();
            }
        }

        public override float RetractSpeed
        {
            get => UserSettings.ZLiftRetractRate;
            set
            {
                UserSettings.ZLiftRetractRate = value;
                RaisePropertyChanged();
            }
        }

        public override float PrintTime => ResinMetadataSettings.PrintTime;

        public override float UsedMaterial => ResinMetadataSettings.TotalMaterialVolumeUsed;

        public override float MaterialCost => 0;

        public override string MaterialName => ResinMetadataSettings.Material;

        public override string MachineName => ZCodeMetadataSettings.PrinterName;

        public override object[] Configs => new[] {(object) ResinMetadataSettings, UserSettings, ZCodeMetadataSettings};
        #endregion

        #region Methods

        public override void Clear()
        {
            base.Clear();
            LayersSettings.Clear();
        }

        public override void Encode(string fileFullPath, OperationProgress progress = null)
        {
            base.Encode(fileFullPath, progress);
            using (ZipArchive outputFile = ZipFile.Open(fileFullPath, ZipArchiveMode.Create))
            {
                outputFile.PutFileContent("ResinMetadata", JsonConvert.SerializeObject(ResinMetadataSettings), ZipArchiveMode.Create);
                outputFile.PutFileContent("UserSettingsData", JsonConvert.SerializeObject(UserSettings), ZipArchiveMode.Create);
                outputFile.PutFileContent("ZCodeMetadata", JsonConvert.SerializeObject(ZCodeMetadataSettings), ZipArchiveMode.Create);

                if (CreatedThumbnailsCount > 0)
                {
                    using (Stream stream = outputFile.CreateEntry("Preview.png").Open())
                    {
                        var vec = new VectorOfByte();
                        CvInvoke.Imencode(".png", Thumbnails[0], vec);
                        stream.WriteBytes(vec.ToArray());
                        stream.Close();
                    }
                }

                GCode = new StringBuilder(GCodeStart);

                float lastZPosition = 0;
                for (uint layerIndex = 0; layerIndex < LayerCount; layerIndex++)
                {
                    progress.Token.ThrowIfCancellationRequested();

                    Layer layer = this[layerIndex];
                    GCode.AppendLine($"{GCodeKeywordSlice} {layerIndex}");

                    if (lastZPosition != layer.PositionZ)
                    {
                        if (layer.LiftHeight > 0)
                        {
                            GCode.AppendLine($"G1 Z{layer.LiftHeight} F{layer.LiftSpeed}");
                            GCode.AppendLine($"G1 Z-{Math.Round(layer.LiftHeight - layer.PositionZ + lastZPosition, 2)} F{layer.RetractSpeed}");
                        }
                        else
                        {
                            GCode.AppendLine($"G1 Z{Math.Round(layer.PositionZ- lastZPosition, 2)} F{layer.LiftSpeed}");
                        }
                    }
                    /*else
                    {
                        //GCode.AppendLine($";G1 Z{LiftHeight} F{LiftSpeed}; Already here");
                        //GCode.AppendLine($";G1 Z-{LiftHeight - layer.PositionZ + lastZPosition} F{RetractSpeed}; Already here");
                    }*/

                    //GCode.AppendLine($"G1 Z{LiftHeight} F{LiftSpeed}");
                    //GCode.AppendLine($"G1 Z-{LiftHeight - LayerHeight} F{RetractSpeed}");
                    GCode.AppendLine(GCodeKeywordDelayBlank);
                    GCode.AppendLine("M106 S255");
                    GCode.AppendLine(GCodeKeywordDelayModel);
                    GCode.AppendLine("M106 S0");


                    var layerimagePath = $"{FolderImages}/{FolderImageName}{layerIndex:D5}.png";
                    using (Stream stream = outputFile.CreateEntry(layerimagePath).Open())
                    {
                        //image.Save(stream, Helpers.PngEncoder);
                        var byteArr = this[layerIndex].CompressedBytes;
                        stream.Write(byteArr, 0, byteArr.Length);
                        stream.Close();
                    }

                    lastZPosition = layer.PositionZ;

                    progress++;
                }

                GCode.AppendLine($"G1 Z40.0 F{UserSettings.ZLiftFeedRate}");
                GCode.AppendLine("M18");

                outputFile.PutFileContent("ResinGCodeData", GCode.ToString(), ZipArchiveMode.Create);
            }
            AfterEncode();
        }

        public override void Decode(string fileFullPath, OperationProgress progress = null)
        {
            base.Decode(fileFullPath, progress);

            FileFullPath = fileFullPath;
            using (var inputFile = ZipFile.Open(FileFullPath, ZipArchiveMode.Read))
            {
                var entry = inputFile.GetEntry("ResinMetadata");
                if (ReferenceEquals(entry, null))
                {
                    Clear();
                    throw new FileLoadException("ResinMetadata not found", fileFullPath);
                }

                ResinMetadataSettings = Helpers.JsonDeserializeObject<ResinMetadata>(entry.Open());

                entry = inputFile.GetEntry("UserSettingsData");
                if (ReferenceEquals(entry, null))
                {
                    Clear();
                    throw new FileLoadException("UserSettingsData not found", fileFullPath);
                }

                UserSettings = Helpers.JsonDeserializeObject<UserSettingsdata>(entry.Open());

                entry = inputFile.GetEntry("ZCodeMetadata");
                if (ReferenceEquals(entry, null))
                {
                    Clear();
                    throw new FileLoadException("ZCodeMetadata not found", fileFullPath);
                }

                ZCodeMetadataSettings = Helpers.JsonDeserializeObject<ZCodeMetadata>(entry.Open());

                entry = inputFile.GetEntry("ResinGCodeData");
                if (ReferenceEquals(entry, null))
                {
                    Clear();
                    throw new FileLoadException("ResinGCodeData not found", fileFullPath);
                }

                LayerManager = new LayerManager(ResinMetadataSettings.TotalLayersCount, this);
                GCode = new StringBuilder();
                using (TextReader tr = new StreamReader(entry.Open()))
                {
                    string line;
                    int layerIndex = 0;
                    int layerFileIndex = 0;
                    string layerimagePath = null;
                    float currentHeight = 0;
                    while (!ReferenceEquals(line = tr.ReadLine(), null))
                    {
                        GCode.AppendLine(line);
                        if (line.StartsWith(GCodeKeywordSlice))
                        {
                            layerFileIndex = int.Parse(line.Substring(GCodeKeywordSlice.Length));
                            layerimagePath = $"{FolderImages}/{FolderImageName}{layerFileIndex:D5}.png";
                            if (LayersSettings.Count - 1 < layerIndex) LayersSettings.Add(new LayerData());
                            continue;
                        }

                        if (line.StartsWith(GCodeKeywordDelaySupportPart))
                        {
                            LayersSettings[layerIndex].SupportLayerFileIndex = layerFileIndex;
                            LayersSettings[layerIndex].SupportLayerEntry = inputFile.GetEntry(layerimagePath);
                            continue;
                        }

                        /*
                         *
<Slice> 0
G1 Z5.0 F100.0
G1 Z-4.9 F100.0
<Delay_blank>
M106 S255
<Delay_support_full>
M106 S0
                         */

                        var gcode = GCode.ToString();

                        if (line.StartsWith(GCodeKeywordDelaySupportFull) || line.StartsWith(GCodeKeywordDelayModel))
                        {
                            var startStr = $"{GCodeKeywordSlice} {layerIndex}";
                            var stripGcode = gcode.Substring(gcode.IndexOf(startStr, StringComparison.InvariantCultureIgnoreCase) + startStr.Length).Trim(' ', '\n', '\r', '\t');

                            var currPos = Regex.Match(stripGcode, "G1 Z([+-]?([0-9]*[.])?[0-9]+)", RegexOptions.IgnoreCase);
                            //var exposureTime = Regex.Match(stripGcode, ";<Delay> (\\d+)", RegexOptions.IgnoreCase);
                            /*var pwm = Regex.Match(stripGcode, "M106 S(\\d+)", RegexOptions.IgnoreCase);
                            if (layerIndex < InitialLayerCount)
                            {
                                OutputSettings.BottomLayerLightPWM = byte.Parse(pwm.Groups[1].Value);
                            }
                            else
                            {
                                OutputSettings.LayerLightPWM = byte.Parse(pwm.Groups[1].Value);
                            }*/
                            if (currPos.Success)
                            {
                                var nextMatch = currPos.NextMatch();
                                if (nextMatch.Success)
                                {
                                    currentHeight = (float)Math.Round(currentHeight + float.Parse(currPos.Groups[1].Value) + float.Parse(currPos.NextMatch().Groups[1].Value), 2);
                                }
                                else
                                {
                                    currentHeight = (float)Math.Round(currentHeight + float.Parse(currPos.Groups[1].Value), 2);
                                }
                                
                            }

                            LayersSettings[layerIndex].LayerFileIndex = layerFileIndex;
                            LayersSettings[layerIndex].LayerEntry = inputFile.GetEntry(layerimagePath);
                            this[layerIndex] = new Layer((uint) layerIndex, LayersSettings[layerIndex].LayerEntry.Open(), LayersSettings[layerIndex].LayerEntry.Name)
                            {
                                PositionZ = currentHeight,
                                ExposureTime = GetInitialLayerValueOrNormal((uint) layerIndex, BottomExposureTime, ExposureTime),
                                LiftHeight = GetInitialLayerValueOrNormal((uint) layerIndex, BottomLiftHeight, LiftHeight),
                                LiftSpeed = GetInitialLayerValueOrNormal((uint) layerIndex, BottomLiftSpeed, LiftSpeed),
                                RetractSpeed = RetractSpeed,
                                LightPWM = GetInitialLayerValueOrNormal((uint) layerIndex, BottomLightPWM, LightPWM),
                            };
                            layerIndex++;

                            progress++;
                        }
                    }

                    tr.Close();
                }

                entry = inputFile.GetEntry("Preview.png");
                if (!ReferenceEquals(entry, null))
                {
                    using (Stream stream = entry.Open())
                    {
                        
                        CvInvoke.Imdecode(stream.ToArray(), ImreadModes.AnyColor, Thumbnails[0]);
                        stream.Close();
                    }
                }
            }

            LayerManager.GetBoundingRectangle(progress);
        }

        public override void RebuildGCode()
        {
            var gcode = GCode.ToString();
            gcode = Regex.Replace(gcode, @"Z[+]?([0-9]*\.[0-9]+|[0-9]+) F[+]?([0-9]*\.[0-9]+|[0-9]+)",
                $"Z{UserSettings.ZLiftDistance} F{UserSettings.ZLiftFeedRate}");

            gcode = Regex.Replace(gcode, @"Z-[-]?([0-9]*\.[0-9]+|[0-9]+) F[+]?([0-9]*\.[0-9]+|[0-9]+)",
                $"Z-{UserSettings.ZLiftDistance - LayerHeight} F{UserSettings.ZLiftRetractRate}");

            GCode.Clear();
            GCode.Append(gcode);
        }

        public override void SaveAs(string filePath = null, OperationProgress progress = null)
        {
            if (RequireFullEncode)
            {
                if (!string.IsNullOrEmpty(filePath))
                {
                    FileFullPath = filePath;
                }
                Encode(FileFullPath, progress);
                return;
            }

            if (!string.IsNullOrEmpty(filePath))
            {
                File.Copy(FileFullPath, filePath, true);
                FileFullPath = filePath;

            }

            using (var outputFile = ZipFile.Open(FileFullPath, ZipArchiveMode.Update))
            {
                outputFile.PutFileContent("ResinMetadata", JsonConvert.SerializeObject(ResinMetadataSettings), ZipArchiveMode.Update);
                outputFile.PutFileContent("UserSettingsData", JsonConvert.SerializeObject(UserSettings), ZipArchiveMode.Update);
                outputFile.PutFileContent("ZCodeMetadata", JsonConvert.SerializeObject(ZCodeMetadataSettings), ZipArchiveMode.Update);
                outputFile.PutFileContent("ResinGCodeData", GCode.ToString(), ZipArchiveMode.Update);
            }

            //Decode(FileFullPath, progress);
        }

        public override bool Convert(Type to, string fileFullPath, OperationProgress progress = null)
        {
            throw new NotImplementedException();
        }
        #endregion
    }
}