using System;
using System.Diagnostics;
using System.IO;
using System.Threading.Tasks;
using System.Windows;
using Microsoft.Win32;
using Cvte.EasiNote;
using BetterEN5.Services;

namespace BetterEN5.UI
{
    public partial class SettingsWindow : Window
    {
        private readonly InkService _inkService = new();
        private readonly ConversionService _conversionService = new();

        public SettingsWindow()
        {
            InitializeComponent();
            Loaded += OnLoaded;
        }

        private async void OnLoaded(object sender, RoutedEventArgs e)
        {
            LoadSettings();
            await RefreshTouchStatusAsync();
        }

        private void LoadSettings()
        {
            var localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
            var settingsFile = Path.Combine(localAppData, "Seewo", "EasiNote5", "BetterEN5", "settings.json");
            if (File.Exists(settingsFile))
            {
                try
                {
                    var json = File.ReadAllText(settingsFile);
                    var settings = System.Text.Json.JsonSerializer.Deserialize<SettingsData>(json);
                    if (settings != null)
                    {
                        AutoSaveInkCheckBox.IsChecked = settings.AutoSaveInk;
                        IncludeShapeInkCheckBox.IsChecked = settings.IncludeShapeInk;
                        ForceIWBModeCheckBox.IsChecked = settings.ForceIWB;
                        SkipTouchCheckCheckBox.IsChecked = settings.SkipTouchCheck;
                        SuppressTouchErrorsCheckBox.IsChecked = settings.SuppressTouchErrors;
                        EnableFallbackModeCheckBox.IsChecked = settings.EnableFallbackMode;
                    }
                }
                catch { }
            }
        }

        private void SaveSettings()
        {
            var localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
            var dir = Path.Combine(localAppData, "Seewo", "EasiNote5", "BetterEN5");
            var settingsFile = Path.Combine(dir, "settings.json");

            if (!Directory.Exists(dir)) Directory.CreateDirectory(dir);

            var settings = new SettingsData
            {
                AutoSaveInk = AutoSaveInkCheckBox.IsChecked ?? false,
                IncludeShapeInk = IncludeShapeInkCheckBox.IsChecked ?? false,
                ForceIWB = ForceIWBModeCheckBox.IsChecked ?? true,
                SkipTouchCheck = SkipTouchCheckCheckBox.IsChecked ?? true,
                SuppressTouchErrors = SuppressTouchErrorsCheckBox.IsChecked ?? true,
                EnableFallbackMode = EnableFallbackModeCheckBox.IsChecked ?? true,
            };

            var json = System.Text.Json.JsonSerializer.Serialize(settings, new System.Text.Json.JsonSerializerOptions
            {
                WriteIndented = true
            });
            File.WriteAllText(settingsFile, json);
        }

        private async void ExportInk_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new SaveFileDialog
            {
                Title = "导出墨迹",
                Filter = "墨迹文件|*.ink.json|JSON 文件|*.json|所有文件|*.*",
                DefaultExt = ".ink.json"
            };

            if (dialog.ShowDialog() == true)
            {
                try
                {
                    await _inkService.ExportInkAsync(dialog.FileName);
                    InkStatusText.Text = $"墨迹已导出至: {dialog.FileName}";
                    InkStatusText.Foreground = System.Windows.Media.Brushes.Green;
                }
                catch (Exception ex)
                {
                    InkStatusText.Text = $"导出失败: {ex.Message}";
                    InkStatusText.Foreground = System.Windows.Media.Brushes.Red;
                }
            }
        }

        private async void ImportInk_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new OpenFileDialog
            {
                Title = "导入墨迹",
                Filter = "墨迹文件|*.ink.json|JSON 文件|*.json|所有文件|*.*",
                DefaultExt = ".ink.json"
            };

            if (dialog.ShowDialog() == true)
            {
                try
                {
                    await _inkService.ImportInkAsync(dialog.FileName);
                    InkStatusText.Text = "墨迹已导入";
                    InkStatusText.Foreground = System.Windows.Media.Brushes.Green;
                }
                catch (Exception ex)
                {
                    InkStatusText.Text = $"导入失败: {ex.Message}";
                    InkStatusText.Foreground = System.Windows.Media.Brushes.Red;
                }
            }
        }

        private void SaveInkSettings_Click(object sender, RoutedEventArgs e)
        {
            SaveSettings();
            InkStatusText.Text = "墨迹设置已保存";
            InkStatusText.Foreground = System.Windows.Media.Brushes.Green;
        }

        private async void ConvertPptx_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new OpenFileDialog
            {
                Title = "选择 PowerPoint 文件",
                Filter = "PowerPoint 文件|*.pptx|所有文件|*.*"
            };

            if (dialog.ShowDialog() == true)
            {
                try
                {
                    var result = await _conversionService.ConvertPptxToEnbxAsync(dialog.FileName);
                    ConversionStatusText.Text = $"转换完成: {result}";
                    ConversionStatusText.Foreground = System.Windows.Media.Brushes.Green;
                }
                catch (Exception ex)
                {
                    ConversionStatusText.Text = $"转换失败: {ex.Message}";
                    ConversionStatusText.Foreground = System.Windows.Media.Brushes.Red;
                }
            }
        }

        private async void ConvertEnbx_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new OpenFileDialog
            {
                Title = "选择希沃白板课件",
                Filter = "希沃课件|*.enbx|所有文件|*.*"
            };

            if (dialog.ShowDialog() == true)
            {
                try
                {
                    var result = await _conversionService.ConvertEnbxToPptxAsync(dialog.FileName);
                    ConversionStatusText.Text = $"导出完成: {result}";
                    ConversionStatusText.Foreground = System.Windows.Media.Brushes.Green;
                }
                catch (Exception ex)
                {
                    ConversionStatusText.Text = $"导出失败: {ex.Message}";
                    ConversionStatusText.Foreground = System.Windows.Media.Brushes.Red;
                }
            }
        }

        private async void ClearConversionCache_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                await _conversionService.FixConversionErrorsAsync();
                ConversionStatusText.Text = "转换缓存已清理";
                ConversionStatusText.Foreground = System.Windows.Media.Brushes.Green;
            }
            catch (Exception ex)
            {
                ConversionStatusText.Text = $"清理失败: {ex.Message}";
                ConversionStatusText.Foreground = System.Windows.Media.Brushes.Red;
            }
        }

        private async void ReRegisterConverter_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var converterPath = Path.Combine(
                    Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86),
                    "Seewo", "EasiNote5", "EasiNote5_5.2.4.9855", "Main",
                    "EasiNote.OfficeDocumentConverter.exe");

                if (File.Exists(converterPath))
                {
                    Process.Start(converterPath, "/register");
                    await Task.Delay(1000);
                    ConversionStatusText.Text = "转换器已重新注册";
                }
                else
                {
                    ConversionStatusText.Text = "未找到转换器";
                }
                ConversionStatusText.Foreground = System.Windows.Media.Brushes.Green;
            }
            catch (Exception ex)
            {
                ConversionStatusText.Text = $"注册失败: {ex.Message}";
                ConversionStatusText.Foreground = System.Windows.Media.Brushes.Red;
            }
        }

        private async void CheckTouch_Click(object sender, RoutedEventArgs e)
        {
            await RefreshTouchStatusAsync();
        }

        private async void ApplyTouchFix_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                await TouchFixService.ApplyFixAsync();
                TouchStatusText.Text = "触摸修复已应用，请重启希沃白板生效";
                TouchStatusText.Foreground = System.Windows.Media.Brushes.Green;
                SaveSettings();
            }
            catch (Exception ex)
            {
                TouchStatusText.Text = $"修复失败: {ex.Message}";
                TouchStatusText.Foreground = System.Windows.Media.Brushes.Red;
            }
        }

        private void SaveTouchSettings_Click(object sender, RoutedEventArgs e)
        {
            SaveSettings();
            TouchStatusText.Text = "触摸设置已保存";
            TouchStatusText.Foreground = System.Windows.Media.Brushes.Green;
        }

        private async Task RefreshTouchStatusAsync()
        {
            try
            {
                var isIwb = await Task.Run(() => TouchFixService.IsTouchWorkingCorrectly());
                TouchStatusText.Text = isIwb
                    ? "触摸状态: 正常 (IWB 模式已启用)"
                    : "触摸状态: 非 IWB 模式 (可能存在问题)";
                TouchStatusText.Foreground = isIwb
                    ? System.Windows.Media.Brushes.Green
                    : System.Windows.Media.Brushes.Orange;
            }
            catch (Exception ex)
            {
                TouchStatusText.Text = $"无法检测触摸状态: {ex.Message}";
                TouchStatusText.Foreground = System.Windows.Media.Brushes.Red;
            }
        }

        private class SettingsData
        {
            public bool AutoSaveInk { get; set; }
            public bool IncludeShapeInk { get; set; }
            public bool ForceIWB { get; set; } = true;
            public bool SkipTouchCheck { get; set; } = true;
            public bool SuppressTouchErrors { get; set; } = true;
            public bool EnableFallbackMode { get; set; } = true;
        }
    }
}