using System.Configuration;
using System.Data;
using System.IO;
using System.Text;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using SparkClient.Model.Common;
using SparkClient.Model.Entity.ApiEntity;
using SparkClient.Model.Helper;
using SparkClient.Model.Services;
using SparkClient.ViewModel.BaseWindow;
using SparkClient.ViewModel.Configuration;
using SparkClient.Views.Dialog;
using SparkDotNetCore.DiamondScanner;
using SparkDotNetCore.DiamondScanner.Entity;
using MessageBox = SparkClient.Views.Dialog.MessageBox;

namespace SparkClient.ViewModel.Grading;

public class GradingLoadingVM : BaseViewModel,IDisposable 
{
    private double _progress;
    private SOCClientService _socClientService;
    public AlgorithmResultEntity Parameter;
    /// <summary>
    /// 进度
    /// </summary>
    public double Progress
    {
        get => _progress;
        set
        {
            _progress = value;
            OnPropertyChanged(nameof(Progress));
        }
    }


    public ICommand StopCommand { get; }

    private string _diamondCode;

    private string _diamnondType;
    
    private bool _disposed;

    private CancellationTokenSource _progressCts; 
    private CancellationTokenSource? _playbackCts; 
    private Diamond _diamond;
    private Scanner _scanner;
    private CancellationTokenSource _completionCts;
  
    #region 图片播放控制
    private PlayStatus _currentStatus = PlayStatus.Stopped;
    public PlayStatus CurrentStatus
    {
        get => _currentStatus;
        set
        {
            _currentStatus = value;
            OnPropertyChanged(nameof(CurrentStatus));
            OnPropertyChanged(nameof(ButtonText)); // 状态变更时更新按钮文本
        }
    }
    public string ButtonText => CurrentStatus switch
    {
        PlayStatus.Playing => MultilingualHelper.getString("GradingLoadingPaused"),
        PlayStatus.Paused => MultilingualHelper.getString("GradingLoadingContinue"),
        _ => MultilingualHelper.getString("GradingLoadingReplay") // Stopped 状态
    };
    private CancellationTokenSource _cts;
    private int _playDelay = 100; // 默认播放速度

    public ICommand PlayControlCommand { get; }
    public ICommand PreviousCommand { get; }
    public ICommand NextCommand { get; }
    
    private int _currentIndex;
    public int CurrentIndex
    {
        get => _currentIndex;
        set
        {
            _currentIndex = value;
            OnPropertyChanged(nameof(CurrentIndex));
            UpdateCurrentImage();
        }
    }

    public string[] ImagePaths { get; set; }
    private ImageSource _currentImage;
    public ImageSource CurrentImage
    {
        get => _currentImage;
        private set
        {
            _currentImage = value;
            OnPropertyChanged(nameof(CurrentImage));
        }
    }

    private bool _imageIsEnable;
    public bool ImageIsEnable
    {
        get => _imageIsEnable;
        private set
        {
            _imageIsEnable = value;
            OnPropertyChanged(nameof(ImageIsEnable)); // 触发通知
        }
    }
    #endregion
    
    public GradingLoadingVM(string diamnondType, string diamondCode)
    {
        _diamondCode = diamondCode;
        _diamnondType = diamnondType;
        StopCommand = new RelayCommand(Stop);
        PlayControlCommand = new RelayCommand(async _ => await HandlePlayControl());
        PreviousCommand = new RelayCommand(_ => MovePrevious());
        NextCommand = new RelayCommand(_ => MoveNext());
        ImageIsEnable = false;
        
        _progressCts = new CancellationTokenSource(); 
        _playbackCts = new CancellationTokenSource();
        _completionCts = new CancellationTokenSource();
    }

    /// <summary>
    /// 开始检测
    /// </summary>
    public async Task<int> Start(int type = 0)
    {

        try
        {
           
            var progress = RunProgressAsync(_progressCts.Token);

            if (type == 11)
            {
                JsonImport jsonImport = new JsonImport();
                bool? a = jsonImport.ShowDialog();
                if (a ?? false)
                {
                    string fileName = jsonImport.FilePath.Text;
                    string[] lines = File.ReadAllLines(fileName);
                    StringBuilder stringBuilder = new StringBuilder();

                    foreach (var line in lines)
                    {
                        stringBuilder.Append(line);
                    }
                    Parameter = JsonConvert.DeserializeObject<AlgorithmResultEntity>(stringBuilder.ToString());
                    await CompleteProgressQuicklyAsync();
                    return 0;
                }
                else
                {
                    return -1;
                }
            }

            if(type == 0){
                _socClientService = new SOCClientService();
                var processImage = _socClientService.ProcessImageCollectionAsync();
                //通知页面可以播放图片
                await processImage;

                if (!("ok".Equals(processImage.Result.Status) || "S000".Equals(processImage.Result.Status)))
                {
                    _progressCts.Cancel();
                    new MessageBox().Show(
                        MultilingualHelper.getString(StatusCodes.GetConstantNameByValue(processImage.Result.Status)));
                    return -1;
                }
                LoadImages(processImage.Result.Images);
            }

            if (type == 1)
            {
                List<string> mnFiles = new List<string>();
                for (int i = 0; i < 100; i++)
                {
                    mnFiles.Add($"{i}.bmp");
                }
                LoadImages(mnFiles);
            }

            ImageIsEnable = true;
            StartPlayback();
           
          
            Diamond diamond = new Diamond();
            string circleSql = $"SELECT VALUE FROM CUTTER_CONFIG WHERE KEY = 'half_circle'";
            DataTable circleTable = DataBaseHelper.ExecuteQuery(circleSql);
            object halfCircleValue = circleTable.Rows[0][0];
            bool.TryParse(halfCircleValue.ToString(), out bool boolResult);
            bool half_circle = boolResult;
            
            //算法配置参数，初始化算法配置数据并获取 AlgorithmConfigJson
            var _algorithmConfigVM = new AlgorithmConfigVM();
            _algorithmConfigVM.InitAlgorithmData(null);
            string algo_config = _algorithmConfigVM.AlgorithmConfigJson;
            
                
            //图片根目录
            string? image_file_base_path = ConfigurationManager.AppSettings["ImageFileBasePath"];
            if (string.IsNullOrEmpty(image_file_base_path))
            {
                throw new InvalidOperationException("ImageFileBasePath is not configured in AppSettings.");
            }
            
            // 获取 log4net 日志文件所在的目录
            string? log4NetLogDirectory =
                Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
            // 构建C++ DLL 日志文件路径
            string algorithm_log_path = Path.Combine(log4NetLogDirectory, "logs");
            
            // 将所有变量拼接成一个 JSON 对象
            JObject jsonData = new JObject(
                new JProperty("shape", _diamnondType.Split(" ")[0]),
                new JProperty("shape_mode", _diamnondType.Split(" ")[1]),
                new JProperty("image_file_base_path", image_file_base_path),
                new JProperty("image_files", ImagePaths),
                new JProperty("half_circle", half_circle),
                new JProperty("algorithm_log_path", algorithm_log_path),
                new JProperty("algo_config", JObject.Parse(algo_config))
            );
            _scanner = new Scanner(diamond);
            var detectTask = _scanner.DetectAsyncByJsonStr(jsonData.ToString());
            
            await detectTask;
            if (detectTask.Status == TaskStatus.RanToCompletion)
            {
                return ReslutGen(detectTask);
            }
            await progress;
            return ReslutGen(detectTask);
        }
        catch(Exception ex)
        {
            return -100;
        }
    }

    private int ReslutGen(Task<DiaResult> detectTask)
    {
        
        CompleteProgressQuicklyAsync();


            switch (detectTask.Result.Status)
            {
                case StatusCodes.AlgorithmFailed:
                    new MessageBox().Show(MultilingualHelper.getString("AlgorithmFailed"));
                    return -1;
                case StatusCodes.ImageFileReadFailure:
                    new MessageBox().Show(MultilingualHelper.getString("ImageFileReadFailure"));
                    return -1;
                case StatusCodes.JsonParseFailure:
                    new MessageBox().Show(MultilingualHelper.getString("JsonParseFailure"));
                    return -1;
                case StatusCodes.NoDiamond:
                    new MessageBox().Show(MultilingualHelper.getString("NoDiamond"));
                    return -1;
            }

            Progress = 100;

            string strParam = JsonConvert.SerializeObject(detectTask.Result);
            AlgorithmResultEntity parameter = JsonConvert.DeserializeObject<AlgorithmResultEntity>(strParam);
            if (parameter == null)
            {
                new MessageBox().Show(MultilingualHelper.getString("JsonParseFailure"));
                return -1;
            }

            try
            {
                string parameterJson = JsonConvert.SerializeObject(parameter);
                parameterJson = JToken.Parse(parameterJson).ToString();
                string outputPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "logs", "result");
                if (!Directory.Exists(outputPath))
                    Directory.CreateDirectory(outputPath);
                string outputFilePath = $"{outputPath}/{_diamondCode}-{DateTime.Now:yyyyMMdd_HHmmss}.json";
                using (var file = File.Create(outputFilePath))
                using (StreamWriter stream = new StreamWriter(file))
                {
                    stream.Write(parameterJson);
                }
            }
            catch (Exception ex)
            {
                Logger.Error("output输出失败：" + ex.Message);
            }

            Parameter = parameter;
            return 0;
    }

    private async Task CompleteProgressSlowlyAsync()
    {
        // 缓慢完成剩余3%（总耗时保持原速度的3倍）
        const int remainingSteps = 3;
        int stepTime = 500; // 自定义慢速步长

        int current = (int)Progress;
        for (int i = 1; i <= remainingSteps; i++)
        {
            if (_progressCts.IsCancellationRequested) break;
            UpdateProgress(current + i);
            await Task.Delay(stepTime);
        }
    }

    private async Task CompleteProgressQuicklyAsync()
    {
        // 取消原进度任务
        _progressCts.Cancel();

        // 快速完成剩余进度（0.5秒内完成）
        int current = (int)Progress;
        int remaining = 100 - current;
        if (remaining <= 0) return;

        int stepTime = Math.Max(50, 500 / remaining); // 动态计算步长

        while (current < 100)
        {
            current = Math.Min(current + 1, 100);
            UpdateProgress(current);
            await Task.Delay(stepTime);
        }
    }
    private void UpdateProgress(int value)
    {
        // UI线程安全更新
        Application.Current.Dispatcher.Invoke(() => 
        {
            Progress = value;
        });
    }
    private void Stop(object param)
    {
        //询问？停止：忽略
        try
        {
            MessageBox messageBox = new MessageBox();
            MessageBoxResult showAsk = messageBox.ShowAsk(MultilingualHelper.getString("GradingLoadingStopAsk"));
            if (showAsk == MessageBoxResult.OK)
            {
                WindowManager.mainViewModel.Content = WindowManager.PreviousVM();
                _scanner?.Cancel();
                _progressCts.Cancel();
                this.Dispose();
            }

        }
        catch (Exception ex)
        {
            
        }

    }
    
    private async Task RunProgressAsync(CancellationToken token)
    {
        var configValue = ConfigurationHelper.ReadConfigValue("ProgressTime");
        int totalDuration = int.TryParse(configValue, out var result) ? result : 50000;
        int stepTime = totalDuration / 97;

        // 使用 IProgress 实现线程安全的进度报告
        var progress = new Progress<double>(value => 
        {
            if (!token.IsCancellationRequested)
                Progress = value;
        });

        await Task.Run(async () => 
        {
            for (int i = 0; i <= 97; i++)
            {
                token.ThrowIfCancellationRequested();
            
                // 报告进度
                ((IProgress<double>)progress).Report(i);
            
                // 使用可取消的延迟
                await Task.Delay(stepTime, token);
            }
        }, token);
    }

    
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }

    protected virtual void Dispose(bool disposing)
    {
        if (_disposed) return;

        if (disposing)
        {
            // 取消所有操作
            _progressCts?.Cancel();
            _playbackCts?.Cancel();

            // 释放托管资源
            _progressCts?.Dispose();
            _playbackCts?.Dispose();
        }

        _disposed = true;
    }
    
    #region 图片播放处理
    
    public void LoadImages(string folderPath)
    {
        ImagePaths = Directory.GetFiles(folderPath, "*.bmp"); 
        CurrentIndex = 0;
        CurrentStatus = PlayStatus.Stopped;
    }
    public void LoadImages(List<string> folderPath)
    {
        ImagePaths = folderPath.ToArray(); 
        CurrentIndex = 0;
        CurrentStatus = PlayStatus.Stopped;
    }
    private async Task HandlePlayControl()
    {
        switch (CurrentStatus)
        {
            case PlayStatus.Stopped:
                await StartPlayback(); // 开始或重播
                break;
            case PlayStatus.Playing:
                PausePlayback();       // 暂停
                break;
            case PlayStatus.Paused:
                await ResumePlayback();// 继续
                break;
        }
    }
    private async Task StartPlayback()
    {
        CurrentStatus = PlayStatus.Playing;
        _cts = new CancellationTokenSource();

        try
        {
            for (CurrentIndex = 0; CurrentIndex < ImagePaths.Length; CurrentIndex++)
            {
                if (_cts.Token.IsCancellationRequested) break;
                await Task.Delay(_playDelay);
            }

            // 播放完成处理
            if (CurrentIndex >= ImagePaths.Length)
            {
                CurrentStatus = PlayStatus.Stopped;
                CurrentIndex = 0; // 重置为初始位置
            }
        }
        catch (TaskCanceledException) { /* 正常取消处理 */ }
    }

    private void PausePlayback()
    {
        _cts?.Cancel();
        CurrentStatus = PlayStatus.Paused;
    }

    private async Task ResumePlayback()
    {
        CurrentStatus = PlayStatus.Playing;
        _cts = new CancellationTokenSource();
        await StartPlayback();
    }
    private void UpdateCurrentImage()
    {
        if (ImagePaths == null || CurrentIndex < 0 || CurrentIndex >= ImagePaths.Length)
            return;
        string? savePath = ConfigurationManager.AppSettings["ImageFileBasePath"];
        var bitmap = new BitmapImage();
        bitmap.BeginInit();
        bitmap.CacheOption = BitmapCacheOption.OnLoad;
        bitmap.UriSource = new Uri(savePath + @"\" + ImagePaths[CurrentIndex]);
        bitmap.EndInit();
        bitmap.Freeze(); // 确保跨线程安全#

        CurrentImage = bitmap;
        OnPropertyChanged(nameof(CurrentImage));
    }

    private void MovePrevious()
    {
        if (CurrentStatus == PlayStatus.Playing) 
            PausePlayback();

        CurrentIndex = (CurrentIndex - 1 + ImagePaths.Length) % ImagePaths.Length;
    }

    private void MoveNext()
    {
        if (CurrentStatus == PlayStatus.Playing) 
            PausePlayback();

        CurrentIndex = (CurrentIndex + 1) % ImagePaths.Length;
    }
    #endregion
}
public enum PlayStatus
{
    Stopped,  // 初始/停止状态
    Playing,  // 播放中
    Paused    // 暂停中
}