using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using MessageBox = System.Windows.MessageBox;

namespace CopyRou
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private readonly IFileService _fileService;
        private readonly ILogger _logger;
        private AppConfig _config;
        private bool _isProcessing = false;

        public MainWindow()
        {
            InitializeComponent();
            _fileService = new FileService();
            _logger = new Logger();
            _config = AppConfig.Load();
            
            InitializeUI();
            SubscribeToEvents();
        }

        private void InitializeUI()
        {
            // 加载配置到UI
            SourcePathsTextBox.Text = _config.GetSourcePathsText();
            DestPathTextBox.Text = _config.DestPath;
            
            // 设置初始状态
            StartButton.IsEnabled = true;
            ProgressBar.Value = 0;
        }

        private void SubscribeToEvents()
        {
            // 订阅日志事件
            _logger.MessageLogged += (sender, message) =>
            {
                Dispatcher.Invoke(() =>
                {
                    LogTextBox.AppendText(message + Environment.NewLine);
                    LogTextBox.ScrollToEnd();
                });
            };
        }

        private async void StartButton_Click(object sender, RoutedEventArgs e)
        {
            if (_isProcessing)
                return;

            var codesText = CodesTextBox.Text;
            if (string.IsNullOrWhiteSpace(codesText))
            {
                System.Windows.MessageBox.Show("请输入要处理的料号", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            var sourcePaths = GetSourcePaths();
            if (!sourcePaths.Any())
            {
                System.Windows.MessageBox.Show("请至少配置一个源路径", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            var destPath = DestPathTextBox.Text;
            if (string.IsNullOrWhiteSpace(destPath))
            {
                System.Windows.MessageBox.Show("请配置目标路径", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            _isProcessing = true;
            StartButton.IsEnabled = false;
            ProgressBar.Value = 0;
            LogTextBox.Clear();

            try
            {
                _logger.Log("=== 开始处理 ===");
                _logger.Log($"源路径: {string.Join(", ", sourcePaths)}");
                _logger.Log($"目标路径: {destPath}");

                var materialNumbers = codesText.Split(new[] { Environment.NewLine, "\n", "\r" }, StringSplitOptions.RemoveEmptyEntries)
                                   .ToList();

                var progress = new Progress<int>(value =>
                {
                    ProgressBar.Value = value;
                });

                await _fileService.ProcessCodes(materialNumbers, sourcePaths, destPath, progress, _logger);
                
                _logger.Log("=== 处理完成 ===");
                System.Windows.MessageBox.Show("处理完成！", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
            }
            catch (Exception ex)
            {
                _logger.LogError($"处理过程中发生错误: {ex.Message}");
                System.Windows.MessageBox.Show($"处理过程中发生错误: {ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            finally
            {
                _isProcessing = false;
                StartButton.IsEnabled = true;
            }
        }

        private void ClearButton_Click(object sender, RoutedEventArgs e)
        {
            CodesTextBox.Clear();
            LogTextBox.Clear();
            ProgressBar.Value = 0;
        }

        private void SaveConfigButton_Click(object sender, RoutedEventArgs e)
        {
            _config.SetSourcePathsFromText(SourcePathsTextBox.Text);
            _config.DestPath = DestPathTextBox.Text;
            _config.Save();
            
            System.Windows.MessageBox.Show("配置已保存", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
        }

        private void AddSourceButton_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new System.Windows.Forms.FolderBrowserDialog();
            dialog.Description = "选择源路径";
            
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                var currentPaths = GetSourcePaths();
                if (!currentPaths.Contains(dialog.SelectedPath))
                {
                    currentPaths.Add(dialog.SelectedPath);
                    SourcePathsTextBox.Text = string.Join(Environment.NewLine, currentPaths);
                }
            }
        }

        private void BrowseDestButton_Click(object sender, RoutedEventArgs e)
        {
            var dialog = new System.Windows.Forms.FolderBrowserDialog();
            dialog.Description = "选择目标路径";
            
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                DestPathTextBox.Text = dialog.SelectedPath;
            }
        }

        private List<string> GetSourcePaths()
        {
            var paths = new List<string>();
            if (!string.IsNullOrWhiteSpace(SourcePathsTextBox.Text))
            {
                paths = SourcePathsTextBox.Text.Split(new[] { Environment.NewLine, "\n", "\r" }, StringSplitOptions.RemoveEmptyEntries)
                                               .Select(p => p.Trim())
                                               .Where(p => !string.IsNullOrEmpty(p))
                                               .ToList();
            }
            return paths;
        }

        private void SingleCodeTextBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            if (e.Key == System.Windows.Input.Key.Enter)
            {
                ProcessSingleCode();
            }
        }

        private async void AddSingleCodeButton_Click(object sender, RoutedEventArgs e)
        {
            await ProcessSingleCodeAsync();
        }

        private void ProcessSingleCode()
        {
            if (_isProcessing)
                return;

            var code = SingleCodeTextBox.Text.Trim();
            if (string.IsNullOrWhiteSpace(code))
            {
                System.Windows.MessageBox.Show("请输入要处理的料号", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            // 异步处理单个料号
            _ = ProcessSingleCodeAsync();
        }

        private async Task ProcessSingleCodeAsync()
        {
            if (_isProcessing)
                return;

            var code = SingleCodeTextBox.Text.Trim();
            if (string.IsNullOrWhiteSpace(code))
            {
                System.Windows.MessageBox.Show("请输入要处理的料号", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            var sourcePaths = GetSourcePaths();
            if (!sourcePaths.Any())
            {
                System.Windows.MessageBox.Show("请至少配置一个源路径", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            var destPath = DestPathTextBox.Text;
            if (string.IsNullOrWhiteSpace(destPath))
            {
                System.Windows.MessageBox.Show("请配置目标路径", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }

            _isProcessing = true;
            AddSingleCodeButton.IsEnabled = false;
            SingleCodeTextBox.IsEnabled = false;

            try
            {
                _logger.Log($"=== 开始处理单个料号: {code} ===");
                _logger.Log($"源路径: {string.Join(", ", sourcePaths)}");
                _logger.Log($"目标路径: {destPath}");

                var materialNumbers = new List<string> { code };

                // 创建一个简单的进度报告器，单个料号处理时直接设置为100%
                var progress = new Progress<int>(value =>
                {
                    // 对于单个料号，我们可以直接设置进度条
                    ProgressBar.Value = value;
                });

                await _fileService.ProcessCodes(materialNumbers, sourcePaths, destPath, progress, _logger);
                
                _logger.Log("=== 单个料号处理完成 ===");
                
                // 清空输入框
                SingleCodeTextBox.Clear();
                
                // 将焦点返回到输入框，方便继续输入
                SingleCodeTextBox.Focus();
            }
            catch (Exception ex)
            {
                _logger.LogError($"处理单个料号时发生错误: {ex.Message}");
                System.Windows.MessageBox.Show($"处理单个料号时发生错误: {ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            finally
            {
                _isProcessing = false;
                AddSingleCodeButton.IsEnabled = true;
                SingleCodeTextBox.IsEnabled = true;
            }
        }

        protected override void OnClosed(EventArgs e)
        {
            // 自动保存配置
            _config.SetSourcePathsFromText(SourcePathsTextBox.Text);
            _config.DestPath = DestPathTextBox.Text;
            _config.Save();
            
            base.OnClosed(e);
        }
    }
}