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

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

        protected void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        public event EventHandler<StandItemCountChangedEventArgs> OnStandItemCountChanged;

        //定义数据源
        public ObservableCollection<StandDetailItem> StandDetailList { get; set; }
       
        //定义事件，用于通知外部组件选中项已更改
        public event EventHandler<StandDetailItemChangedEventArgs> OnSelectedStandDetailItemChanged;

        public event Action<string> OnDeleteStandDetailItem;


        private StandDetailItem _selectedStandDetailsItem;
        //定义SelectedDataItem属性，并在值变化时触发事件
        public StandDetailItem SelectedStandDetailItem
        {
            get => _selectedStandDetailsItem;
            set
            {
                if(_selectedStandDetailsItem != value)
                {
                    _selectedStandDetailsItem = value;
                    OnPropertyChanged(nameof(SelectedStandDetailItem));
                    OnSelectedStandDetailItemChanged?.Invoke(this, new StandDetailItemChangedEventArgs(value));
                }
            }
        }

        private StandItem _curStandItem;
        public StandItem CurStandItem
        {
            get => _curStandItem;
            set
            {
                if (_curStandItem != value)
                {
                    _curStandItem = value;
                    StandDetailPage.InitDefaulValue(mConfigItem.StandPageSize);
                    LoadStandDetailItemList(value);
                }
            }
        }

        //详情分页信息
        public PageModel StandDetailPage { get; set; }

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

        public CfginiItem mConfigItem { get; set; }           

        //异步方法
        private async void LoadStandDetailItemList(StandItem standItem)
        {
            StandDetailList.Clear();
            if (CurStandItem != null)
            {
                try
                {
                    var result = await Task.Run(() =>
                    {
                       return DBStand.GetPagedStandDetails(
                            StandDetailPage.PageNumber, StandDetailPage.PageSize, CurStandItem.StandId);
                    });

                    TotalRecords = result.Item1;
                    StandDetailPage.PageCount = result.Item2;
                    List<TStandDetail> standDetails = result.Item3;

                    int index = 0;
                    foreach (TStandDetail standDetail in standDetails)
                    {
                        StandDetailList.Add(new StandDetailItem(standDetail));
                        index++;
                        //更新索引号
                        StandDetailList[StandDetailList.Count - 1].Index =
                            index + ((StandDetailPage.PageNumber - 1) * StandDetailPage.PageSize);
                    }

                    if(StandDetailList.Count > 0)
                    {
                        dgStandDetails.ScrollIntoView(dgStandDetails.Items[0]);
                    }

                }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);
                }
            }
            SelectedStandDetailItem = null;
        }

        public UCStandGrid()
        {
            InitializeComponent();
            StandDetailList = new ObservableCollection<StandDetailItem>();
            dgStandDetails.ItemsSource = StandDetailList;
            
            CurStandItem = null;

            mConfigItem = CfginiItem.GetConfigItem();

            StandDetailPage = new PageModel()
            {
                PageSize = mConfigItem.StandPageSize,
                PageNumber = 1,
            };

            //mConfigItem.OnStandPageSizeChanged += MConfigItem_OnStandPageSizeChanged;
            mConfigItem.OnStandPageSizeChanged += MConfigItem_OnStandPageSizeChanged1;

            UCPatchGrid.OnDeleteStandDetail += UCPatchGrid_OnDeleteStandDetail;
            UCPatchGrid.OnUpdateStandValue += UCPatchGrid_OnUpdateStandValue;

            this.DataContext = this;
        }



        private void UCPatchGrid_OnUpdateStandValue(string arg1, string arg2)
        {
            //throw new NotImplementedException();
            StandDetailItem standDetailItem = StandDetailList.FirstOrDefault(a => a.StandDetailId == arg1);
            if(standDetailItem != null)
            {
                standDetailItem.StandValue = arg2;
            }
        }

        private void UCPatchGrid_OnDeleteStandDetail(string standDetailId)
        {
            //Application.Current.Dispatcher.Invoke(() =>
            //{
            //    // 从数据源中移除该条目                       
            //    StandDetailList.Remove(selectedItem);
            //    SelectedStandDetailItem = null;
            //    OnDeleteStandDetailItem?.Invoke(selectedItem.StandId);
            //});
            StandDetailItem standDetailItem = StandDetailList.FirstOrDefault(a => a.StandDetailId == standDetailId);
            if (standDetailItem != null)
            {
                StandDetailList.Remove(standDetailItem);
                OnDeleteStandDetailItem?.Invoke(standDetailItem.StandId);
            }
        }

        private void MConfigItem_OnStandPageSizeChanged(object sender, PageSizeChangedEventArgs e)
        {
            //throw new NotImplementedException();
            StandDetailPage.InitDefaulValue(e.PageSize);
            LoadStandDetailItemList(CurStandItem);
        }

        private void MConfigItem_OnStandPageSizeChanged1(int pageSize)
        {
            StandDetailPage.InitDefaulValue(pageSize);
            LoadStandDetailItemList(CurStandItem);
        }

        private void Image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var image = sender as System.Windows.Controls.Image;
            if (image == null) return;

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

            //var dialog = new ImageViewerWindow(dataContext.SourceImagePath)
            var dialog = new imgWindow(dataContext.SrcImage)
            {
                Owner = Application.Current.MainWindow
            };
            dialog.Show();
        }

        private void StandValue_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {        
            if (e.ClickCount == 2)
            {               
                // 获取当前行的数据上下文
                var textBlock = sender as TextBlock;
                if (textBlock == null) return;

                var dataContext = textBlock.DataContext as StandDetailItem; // 替换为你的数据类型
                if (dataContext == null) return;

                SelectedStandDetailItem = dataContext;

                UpdateStandvalue(dataContext);

            }//e.clickCount
        }


        private void UpdateStandvalue(StandDetailItem detailItem)
        {
            StandValueModel standValueModel = new StandValueModel(detailItem);
            var dialog = new EditStandValueDlg(standValueModel)
            {
                Owner = Application.Current.MainWindow,
                WindowStartupLocation = WindowStartupLocation.CenterOwner
            };
            //if (dialog.ShowDialog() == true)
            //{
            //    UpdateStandValue(detailItem, standValueModel);
            //}//if showDialog
            dialog.OnEditStandValue += (value) =>
            {
                UpdateStandValue(detailItem, standValueModel);
            };
            dialog.Show();
        }

        private void UpdateStandValue(StandDetailItem detailItem,StandValueModel standValueModel)
        {
            try
            {
                //修改数据库
                bool updateStandValue2 = DBStand.UpdateStandDetailStandValue(detailItem.SrcImage, standValueModel.StandValue);
                if (updateStandValue2)
                {
                    detailItem.StandValue = standValueModel.StandValue;
                    //MessageBox.Show(Application.Current.MainWindow, "修改标准值完成。", "提示", MessageBoxButton.OK,
                    //    MessageBoxImage.Information);
                }
                else
                {
                    MessageBox.Show(Application.Current.MainWindow, "修改标准值失败。", "警告", MessageBoxButton.OK,
                        MessageBoxImage.Warning);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"修改标准值错误：{ex.Message}！", "警告", MessageBoxButton.OK,
                    MessageBoxImage.Warning);
            }
        }

        private void UserControl_DragEnter(object sender, DragEventArgs e)
        {
            e.Handled = true;

            // Check if the dragged item is a folder
            if (e.Data.GetDataPresent(DataFormats.FileDrop) && CurStandItem != null)
            {
                var paths = (string[])e.Data.GetData(DataFormats.FileDrop);
                if (paths != null && paths.Length > 0 && Directory.Exists(paths[0]))
                {
                    e.Effects = DragDropEffects.Copy;
                }
                else
                {
                    e.Effects = DragDropEffects.None;
                }
            }
            else
            {
                e.Effects = DragDropEffects.None;
            }
        }

        private async void UserControl_Drop(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop) && CurStandItem != null)
            {
                var paths = (string[])e.Data.GetData(DataFormats.FileDrop);
                if (paths != null && paths.Length > 0)
                {
                    var folderPath = paths[0];

                    if (Directory.Exists(folderPath))
                    {
                        // Process folder
                        //await LoadJpgFilesFromFolder(folderPath);
                        ////StandDetailPage.PageNumber = 1;
                        //StandDetailPage.InitDefaulValue();
                        //LoadStandDetailItemList(CurStandItem);
                        await ImportStandImageFloder(folderPath);
                    }
                }
            }//if
        }

        public async Task<bool> ImportStandImageFloder(string folderPath)
        {
            try
            {
                bool blLoad = await LoadJpgFilesFromFolder(folderPath);
                if (blLoad)
                {
                    StandDetailPage.InitDefaulValue();
                    LoadStandDetailItemList(CurStandItem);
                }
                return true;
            }
            catch(Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow,
                    $"导入模板图像错误：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
                return false;
            }
        }

        private async Task<bool> LoadJpgFilesFromFolder(string folderPath)
        {
            //var jpgFiles = Directory.GetFiles(folderPath, "*.jpg", SearchOption.AllDirectories);
            var jpgFiles = Directory.GetFiles(folderPath, "*.jpg", SearchOption.AllDirectories)
                        .Concat(Directory.GetFiles(folderPath, "*.bmp", SearchOption.AllDirectories))
                        .ToArray();

            List<string> fileList = new List<string>();
            foreach (var filePath in jpgFiles)
            {
                /*_fileItems.Add(new FileItem
                {
                    FileName = Path.GetFileName(filePath),
                    FilePath = filePath,
                    FileSize = new FileInfo(filePath).Length
                });*/
                if( (ThisApp.IsJpgFile(filePath) || ThisApp.IsBmpFile(filePath) ) && 
                    ThisApp.IsFileSizeValid(filePath) &&
                    ThisApp.IsImageDimensionsValid(filePath))
                {
                    fileList.Add(filePath);
                }
            }//foreach

            if(fileList.Count == 0)
            {
                MessageBox.Show(Application.Current.MainWindow,
                    "没有找到符号要求的图片文件。", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return false;
            }

            //加载数据到数据库中
            return await InsertFilesWithProgress(fileList);
        }

        public async Task<bool> 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,
                WindowStartupLocation = WindowStartupLocation.CenterOwner
            };
            progressDialog.Show();

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

                //刷新CurItem
                if (blInsert)
                {
                    OnStandItemCountChanged?.Invoke(this, new StandItemCountChangedEventArgs(CurStandItem));
                }
                return blInsert;
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"操作数据库失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                return false;
            }
            finally
            {
                // 关闭进度对话框
                progressDialog.Close();
            }
        }

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

            int insertCount = 0;
            try
            {
                await Task.Run(() =>
                {
                    foreach (var filePath in filePaths)
                    {
                        // 检查文件是否已经存在于数据库            
                        if (!DBStand.IsSrcImageExitInStand(filePath, CurStandItem.StandId))
                        {
                            // 插入文件路径到数据库
                            //InsertFileToDatabase(filePath);
                            TStandDetail standDetail = new TStandDetail()
                            {
                                StandDetailId = Guid.NewGuid().ToString(),
                                CreateTime = ThisApp.GetNowTime_yyyyMMddHHmmss(),
                                StandId = CurStandItem.StandId,
                                SrcImage = filePath,
                                StandValue = ""
                            };
                            bool blInsert = DBStand.InsertStandDetail(standDetail);
                            if(blInsert)
                            {
                                insertCount++;
                            }
                        }

                        // 更新进度条
                        currentFile++;
                        Application.Current.Dispatcher.Invoke(() =>
                        {
                            UpdateProgress(progressDialog, currentFile, totalFiles);
                        });                        
                    }
                });
            }
            catch(Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"插入数据失败：{ex.Message}。", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
            }
            return insertCount > 0;
        }

        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 void NextPage()
        {
            if (StandDetailPage.PageNumber < StandDetailPage.PageCount)
            {
                StandDetailPage.PageNumber += 1;
                LoadStandDetailItemList(CurStandItem);
            }
        }

        public void PrePage()
        {
            if (StandDetailPage.PageNumber > 1)
            {
                StandDetailPage.PageNumber -= 1;
                LoadStandDetailItemList(CurStandItem);
            }
        }

        public void FirstPage()
        {
            if (StandDetailPage.PageNumber > 1)
            {
                StandDetailPage.PageNumber = 1;
                LoadStandDetailItemList(CurStandItem);
            }
        }

        public void LastPage()
        {
            if (StandDetailPage.PageNumber < StandDetailPage.PageCount)
            {
                StandDetailPage.PageNumber = StandDetailPage.PageCount;
                LoadStandDetailItemList(CurStandItem);
            }
        }

        public void SpeciPage(int pageNumber)
        {
            if(pageNumber != StandDetailPage.PageNumber && 
                pageNumber>0 && pageNumber <= StandDetailPage.PageCount)
            {
                StandDetailPage.PageNumber = pageNumber;
                LoadStandDetailItemList(CurStandItem);
            }
        }



        private void BtnDelDetailItem_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
            var selectedItem = row.Item as StandDetailItem;
            DeleteSelectedItem(selectedItem);
        }

        private async void DeleteSelectedItem(StandDetailItem 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 = DBStand.DeleteTStandDetailById(selectedItem.StandDetailId);
                });

                if (deleteSuccess)
                {
                    //LoadStandDetailItemList(CurStandItem);
                    Application.Current.Dispatcher.Invoke(() =>
                    {
                        // 从数据源中移除该条目                       
                        StandDetailList.Remove(selectedItem);
                        SelectedStandDetailItem = null;
                        OnDeleteStandDetailItem?.Invoke(selectedItem.StandId);
                        //重新加载数据
                        //LoadPatchDetailItemList();
                    });
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(Application.Current.MainWindow, $"删除失败：{ex.Message}", "错误",
                    MessageBoxButton.OK, MessageBoxImage.Error);
            }
            finally
            {
                waitWindow.Close();
            }
        }

        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 BtnUpdateStandvalue_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
            var selectedItem = row.Item as StandDetailItem;

            UpdateStandvalue(selectedItem);
        }

        private void MiDelteRow_Click(object sender, RoutedEventArgs e)
        {
            if(SelectedStandDetailItem != null)
            {
                DeleteSelectedItem(SelectedStandDetailItem);
            }
        }

        private void MiUpdateStandvalue_Click(object sender, RoutedEventArgs e)
        {
            if (SelectedStandDetailItem == null) return;

            UpdateStandvalue(SelectedStandDetailItem);

        }


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

    public class StandDetailItemChangedEventArgs : EventArgs
    {
        public StandDetailItem SelectedDataItem { get; }

        public StandDetailItemChangedEventArgs(StandDetailItem selectedDataItem)
        {
            SelectedDataItem = selectedDataItem;
        }
    }

    //目录的条目数发生了变化
    public class StandItemCountChangedEventArgs : EventArgs
    {
        public StandItem mStandItem { get; }
        public StandItemCountChangedEventArgs(StandItem standItem)
        {
            mStandItem = standItem;
        }
    }

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