using MeterVision.Config;
using MeterVision.db;
using MeterVision.Dlg;
using MeterVision.FreeAi;
using MeterVision.model;
using MeterVision.Util;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.IO;
using System.Threading.Tasks;
//using System.Linq;
//using System.Text;
//using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
//using System.Windows.Data;
//using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
//using System.Windows.Media;
//using System.Windows.Media.Imaging;
//using System.Windows.Navigation;
//using System.Windows.Shapes;

namespace MeterVision.Single
{
    /// <summary>
    /// UCSingleGrid.xaml 的交互逻辑
    /// </summary>
    public partial class UCSingleGrid : UserControl, INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
        //定义数据源
        public ObservableCollection<SingleDetailItem> SingleDetailItemList { get; set; }


        //定义事件，用于通知外部组件选中项已更改(用于其它窗体或用户控件注册)
        public event EventHandler<SingleDetailItemChangedEventArgs> OnSelectedSingDetailItemChanged;

        private SingleDetailItem _selectedSingleDetailItem;
        public SingleDetailItem SelectedSingleDetailItem
        {
            get => _selectedSingleDetailItem;
            set
            {
                if(_selectedSingleDetailItem != value)
                {
                    _selectedSingleDetailItem = value;
                    OnPropertyChanged(nameof(SelectedSingleDetailItem));
                    OnSelectedSingDetailItemChanged?.Invoke(this, new SingleDetailItemChangedEventArgs(value));
                }
            }
        }

        public ConfigItem mConfigItem { get; set; }

        public PageModel SingleDetailPage { get; set; }

        private int _totalRecord;
        public int TotalRecords
        {
            get => _totalRecord;
            set
            {
                if (_totalRecord != value)
                {
                    _totalRecord = value;
                    OnPropertyChanged(nameof(TotalRecords));
                }
            }
        }

        public UCSingleGrid()
        {
            InitializeComponent();

            SingleDetailItemList = new ObservableCollection<SingleDetailItem>();
            dgSingle.ItemsSource = SingleDetailItemList;

            mConfigItem = ConfigItem.GetConfigItem();

            SingleDetailPage = new PageModel
            {
                PageSize = mConfigItem.SinglePageSize,
                PageNumber = 1
            };

            mConfigItem.OnSinglePageSizeChanged += MConfigItem_OnSinglePageSizeChanged;

            InitializeAsync();

            //CreateDemoData();
            this.DataContext = this;           
        }

        private async void InitializeAsync()
        {
            await LoadSingleDetailItemList();
        }

        private async void MConfigItem_OnSinglePageSizeChanged(object sender, PageSizeChangedEventArgs e)
        {
            SingleDetailPage.InitDefaulValue(e.PageSize);
            await LoadSingleDetailItemList();
        }

        public async void RefreshData()
        {
            SingleDetailPage.InitDefaulValue();
            await LoadSingleDetailItemList();
        }

        public async Task<bool> LoadSingleDetailItemList()
        {
            SingleDetailItemList.Clear();
            try
            {
                var result = await Task.Run(() =>
                {
                    return DBSingle.GetPagedSingleDetails(SingleDetailPage.PageNumber, SingleDetailPage.PageSize);
                });

                TotalRecords = result.Item1;
                SingleDetailPage.PageCount = result.Item2;
                List<TSingleDetail> singleDetails = result.Item3;

                //更新数据需要在主线中进行
                Application.Current.Dispatcher.Invoke(() =>
                {
                    int index = 0;
                    foreach (TSingleDetail singleDetail in singleDetails)
                    {
                        index++;
                        SingleDetailItem item = new SingleDetailItem(singleDetail);
                        item.Index = index + ((SingleDetailPage.PageNumber - 1) * SingleDetailPage.PageSize);
                        SingleDetailItemList.Add(item);
                    }//foreach
                    SelectedSingleDetailItem = null;
                });
                return true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow,
                    $"加载数据时发生错误：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                return false;
            }
        }

        private void SrcImage_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var image = sender as Image;
            if (image == null) return;

            var dataContext = image.DataContext as SingleDetailItem;
            if (dataContext == null) return;

            //var dialog = new ImageViewerWindow(dataContext.SourceImagePath)
            if (!File.Exists(dataContext.SrcImage)) return;

            var dialog = new imgWindow(dataContext.SrcImage)
            {
                Owner = Application.Current.MainWindow
            };
            if(dialog.ShowDialog() == true)
            {
                
            }
        }
        private void DstImage_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var image = sender as Image;
            if (image == null) return;

            var dataContext = image.DataContext as SingleDetailItem;
            if (dataContext == null) return;

            //var dialog = new ImageViewerWindow(dataContext.SourceImagePath)
            if (!File.Exists(dataContext.DstImage)) return;
            var dialog = new imgWindow(dataContext.DstImage)
            {
                Owner = Application.Current.MainWindow
            };
            if (dialog.ShowDialog() == true)
            {

            }
        }
        

        private void UserControl_DragEnter(object sender, DragEventArgs e)
        {

        }

        private void UserControl_PreviewDragOver(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                // 获取拖拽的文件数组
                string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);

                // 检查是否只拖拽了一个文件，并且该文件不是文件夹
                if (files.Length == 1 && File.Exists(files[0]))
                {
                    e.Effects = DragDropEffects.Copy;
                }
                else
                {
                    e.Effects = DragDropEffects.None;
                }
            }
            else
            {
                e.Effects = DragDropEffects.None;
            }
            e.Handled = true;
        }

        private void UserControl_Drop(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                // 获取拖拽的文件数组
                string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);

                // 确保只拖拽了一个文件
                if (files.Length != 1)
                {
                    //MessageBox.Show("只能拖拽一个文件。", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                    MessageBox.Show(Application.Current.MainWindow, 
                        "只能拖拽一个文件。", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                    return;
                }

                // 获取单个文件路径
                string file = files[0];

                // 验证文件是否为 JPG 文件
                //if (IsJpgFile(file))

                // 验证文件是否为有效的 JPG 文件，并且文件大小不超过 100KB
                if ( (ThisApp.IsJpgFile(file) || ThisApp.IsBmpFile(file) ) && 
                    ThisApp.IsFileSizeValid(file) && ThisApp.IsImageDimensionsValid(file))
                {
                    // 调用图像处理方法
                    //ProcessDragFile(file);
                    DragRecong(file);
                }
                else
                {
                    MessageBox.Show(Application.Current.MainWindow,
                        $"文件 {file} 不符合要求：必须是小于 200KB 的 JPG 文件，且图像尺寸必须为 320x240。", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                }
            }
        }

        public async void DragRecong(string srcImagePath)
        {
            var singleDetail = new SingleDetailItem()
            {
                SingleDetailId = Guid.NewGuid().ToString(),
                CreateTime = ThisApp.GetNowTime_yyyyMMddHHmmss(),
                SrcImage = srcImagePath
            };
            //DBSingle.InsertTSingleDetail0(singleDetail);

            bool blRun = await RunAI(true,singleDetail);
            Console.Write($"Run:{blRun}");

            if (blRun)
            {
                SingleDetailPage.PageNumber = 1;
                await LoadSingleDetailItemList();
                if (SingleDetailItemList.Count > 0)
                {
                    SelectedSingleDetailItem = SingleDetailItemList[0];
                    dgSingle.ScrollIntoView(dgSingle.Items[0]);
                }
                MessageBox.Show(Application.Current.MainWindow, "识别成功！", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
            }
            else
            {
                MessageBox.Show(Application.Current.MainWindow, "识别识别！", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        //处理拖拽的文件
        //private void ProcessDragFile(string filePath)
        //{
        //    //AddNewSingTask(filePath);
        //    InsertFilesWithProgress(new List<string>() { filePath });
        //}

        //public async void InsertFilesWithProgress(List<string> filePaths)
        //{
        //    // 弹出一个非模式对话框来显示进度
        //    ProgressDialog progressDialog = new ProgressDialog()
        //    {
        //        Owner = Application.Current.MainWindow
        //    };
        //    progressDialog.Show();

        //    // 任务来异步执行文件插入
        //    await Task.Run(() => InsertFilesToDatabase(filePaths, progressDialog));

        //    // 关闭进度对话框
        //    progressDialog.Close();
        //    //刷新CurItem                       
        //    //OnStandItemCountChanged?.Invoke(this, new StandItemCountChangedEventArgs(CurStandItem));

        //    //刷新数据(并定位第一条)
        //    SingleDetailPage.PageNumber = 1;
        //    LoadSingleDetailItemList();
        //    SelectedSingleDetailItem = SingleDetailItemList[0];
        //}

        public void InsertFilesToDatabase(List<string> filePaths, ProgressDialog progressDialog)
        {
            int totalFiles = filePaths.Count;
            int currentFile = 0;

            foreach (var filePath in filePaths)
            {
                // 插入文件路径到数据库
                //InsertFileToDatabase(filePath);
                TSingleDetail singleDetail = new TSingleDetail()
                {
                    SingleDetailId = Guid.NewGuid().ToString(),
                    CreateTime = ThisApp.GetNowTime_yyyyMMddHHmmss(),
                    SrcImage = filePath
                };
                DBSingle.InsertTSingleDetail0(singleDetail);

                // 更新进度条
                currentFile++;
                UpdateProgress(progressDialog, currentFile, totalFiles);
            }
        }

        public void UpdateProgress(ProgressDialog progressDialog, int currentFile, int totalFiles)
        {
            // 更新进度条的进度
            double progress = (double)currentFile / totalFiles * 100;
            progressDialog.UpdateProgress(progress);
        }


        public async void NextPage()
        {
            if (SingleDetailPage.PageNumber < SingleDetailPage.PageCount)
            {
                SingleDetailPage.PageNumber += 1;
                await LoadSingleDetailItemList();
            }
        }

        public async void PrePage()
        {
            if (SingleDetailPage.PageNumber > 1)
            {
                SingleDetailPage.PageNumber -= 1;
                await LoadSingleDetailItemList();
            }
        }

        public async void FirstPage()
        {
            if (SingleDetailPage.PageNumber > 1)
            {
                SingleDetailPage.PageNumber = 1;
                await LoadSingleDetailItemList();
            }
        }

        public async void LastPage()
        {
            if (SingleDetailPage.PageNumber < SingleDetailPage.PageCount)
            {
                SingleDetailPage.PageNumber = SingleDetailPage.PageCount;
                await LoadSingleDetailItemList();
            }
        }

        public async void SpeciPage(int pageNumber)
        {
            if (pageNumber != SingleDetailPage.PageNumber &&
                pageNumber > 0 && pageNumber <= SingleDetailPage.PageCount)
            {
                SingleDetailPage.PageNumber = pageNumber;
                await LoadSingleDetailItemList();
            }
        }

        // 辅助方法：查找指定类型的祖先元素
        public static T FindAncestor<T>(DependencyObject dependencyObject) where T : DependencyObject
        {
            var parent = VisualTreeHelper.GetParent(dependencyObject);

            if (parent == null) return null;

            var parentT = parent as T;
            return parentT ?? FindAncestor<T>(parent);
        }


        private void BtnDelDetailItem_Click(object sender, RoutedEventArgs e)
        {
            //删除选中项
            Button button = sender as Button;
            if (button == null) return;

            DataGridRow row = FindAncestor<DataGridRow>(button);
            if (row == null) return;

            //获取当前行绑定的数据项
            SingleDetailItem selectedItem = row.Item as SingleDetailItem;
            DeleteSelectedItem(selectedItem);
        }

        private void BtnRecongDetailItem_Click(object sender, RoutedEventArgs e)
        {
            Button button = sender as Button;
            if (button == null) return;

            DataGridRow row = FindAncestor<DataGridRow>(button);
            if (row == null) return;

            //获取当前行绑定的数据项
            SingleDetailItem selectedItem = row.Item as SingleDetailItem;
            RecongSingleDetail(false, SelectedSingleDetailItem);
        }

        private void BtnLogViewer_Click(object sender, RoutedEventArgs e)
        {
            Button button = sender as Button;
            if (button == null) return;

            DataGridRow row = FindAncestor<DataGridRow>(button);
            if (row == null) return;

            //获取当前行绑定的数据项
            SingleDetailItem selectedItem = row.Item as SingleDetailItem;
            ShowLogViewer(selectedItem);
        }

        private void ShowLogViewer(SingleDetailItem selectedItem)
        {
            if (selectedItem.LogPath != null && File.Exists(selectedItem.LogPath))
            {
                LogViewerWindow dialog = new LogViewerWindow(selectedItem.DstImage, selectedItem.LogPath)
                {
                    Owner = Application.Current.MainWindow,
                    WindowStartupLocation = WindowStartupLocation.CenterOwner
                };

                dialog.ShowDialog();
            }
        }


        private async void DeleteSelectedItem(SingleDetailItem selectedItem)
        {
            if (selectedItem == null) return;

            MessageBoxResult result = MessageBox.Show("确定要删除此条目吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Question);
            if (result != MessageBoxResult.Yes) return;


            string titleInfo = "正在删除，请稍后...";
            WaitWindow waitWindow = new WaitWindow(titleInfo)
            {
                Owner = Application.Current.MainWindow,
                WindowStartupLocation = WindowStartupLocation.CenterOwner
            };
            waitWindow.Show();

            try
            {

                bool deleteSuccess = false;
                await Task.Run(() =>
                {
                    deleteSuccess = DBSingle.DeleteTSingleDetailById(selectedItem.SingleDetailId);
                });

                if (deleteSuccess)
                {
                    Application.Current.Dispatcher.Invoke(() =>
                    {
                        // 从数据源中移除该条目
                        SingleDetailItemList.Remove(selectedItem);
                        SelectedSingleDetailItem = null;
                    });
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"删除失败：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
            }
            finally
            {
                waitWindow.Close();
            }           
        }

        //清空所有的列表数据
        public async void ClearAllSingleDetail()
        {
            //清空提示
            MessageBoxResult result = MessageBox.Show("确定要清空所有数据吗？", "确认清空", MessageBoxButton.YesNo, MessageBoxImage.Question);
            if (result != MessageBoxResult.Yes) return;

            string titleInfo = "正在清空数据，请稍后...";
            WaitWindow waitWindow = new WaitWindow(titleInfo)
            {
                Owner = Application.Current.MainWindow,
                WindowStartupLocation = WindowStartupLocation.CenterOwner
            };
            waitWindow.Show();

            try
            {
                bool blClearAll = false;
                await Task.Run(() =>
                {
                    blClearAll = DBSingle.ClearTSingleDetailTable();
                });
                if (blClearAll)
                {
                    SingleDetailPage.InitDefaulValue();
                    await LoadSingleDetailItemList();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"清空失败：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
            }
            finally
            {
                waitWindow.Close();
            }
        }

        private void MiDelete_Click(object sender, RoutedEventArgs e)
        {
            if (SelectedSingleDetailItem == null) return;

            //获取当前行绑定的数据项
            DeleteSelectedItem(SelectedSingleDetailItem);
        }

        private void MiRecong_Click(object sender, RoutedEventArgs e)
        {
            if (SelectedSingleDetailItem == null) return;

            RecongSingleDetail(false, SelectedSingleDetailItem);
        }

        private async void RecongSingleDetail(bool isAdd, SingleDetailItem singleDetailIte)
        {
            string jpgFile = singleDetailIte.SrcImage;
            if (!File.Exists(jpgFile))
            {
                MessageBox.Show(Application.Current.MainWindow, $"文件：{jpgFile}不存在！", "警告", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }

            bool blRun = await RunAI(isAdd, singleDetailIte);

            if (blRun)
            {
                MessageBox.Show(Application.Current.MainWindow, "识别成功！", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
            }
            else
            {
                MessageBox.Show(Application.Current.MainWindow, "识别失败！", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        
        private async Task<bool> RunAI(bool isAdd,SingleDetailItem singleDetailItem)
        {          
            FaRun faRun = new FaRun();
            faRun.OnAiRealLogInfo += FaRun_OnAiRealLogInfo;

            string titleInfo = "正在识别，请稍后...";
            WaitWindow waitWindow = new WaitWindow(titleInfo)
            {
                Owner = Application.Current.MainWindow,
                WindowStartupLocation = WindowStartupLocation.CenterOwner
            };
            waitWindow.Show();

            try
            {
                TSingleDetail newSingleDetail = null;
                bool blRun = await Task.Run(() =>
                {
                    try
                    {
                        ResultModel resultModel = faRun.StartRecognition(singleDetailItem.SrcImage);
                        if (resultModel == null) return false;

                        newSingleDetail = new TSingleDetail(singleDetailItem, resultModel);
                        //更新数据
                        bool blOpration;
                        if (isAdd)
                        {
                            blOpration = DBSingle.InsertSingleDetail(newSingleDetail);
                        }
                        else
                        {
                            blOpration = DBSingle.UpdateSingleDetail(newSingleDetail);
                        }
                        
                        return blOpration;
                    }
                    catch(Exception ex)
                    {
                        Console.WriteLine(ex.Message);
                        return false;
                    }                   
                });

                //在主线程中更新DataGrid的Row数据
                if (blRun && !isAdd && newSingleDetail != null)
                {
                    //singleDetailItem = newSingleDetail;
                    ObjectHelper.CopyMatchingFields(newSingleDetail, singleDetailItem);
                }
                return blRun;
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"识别[{singleDetailItem.SrcImage}]时出错：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
                return false;
            }
            finally
            {
                waitWindow.Close();
            }         
        }

        private void FaRun_OnAiRealLogInfo(object sender, AiRealLogEventArgs e)
        {
            Console.Write(e.mLogInfo);
        }

        private void MiViewLog_Click(object sender, RoutedEventArgs e)
        {
            if(SelectedSingleDetailItem != null)
            {
                ShowLogViewer(SelectedSingleDetailItem);
            }
        }

        ///////////////////////////////////////////////////////////////////////////
    }

    //自定义事件参数类
    public class SingleDetailItemChangedEventArgs : EventArgs
    {
        public SingleDetailItem SelectedSingleDetailItem { get; }

        public SingleDetailItemChangedEventArgs(SingleDetailItem selectedData)
        {
            SelectedSingleDetailItem = selectedData;
        }
    }


}