using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Printing;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Xps;

namespace PEP_Tool
{
    class Print
    {
        public DataGrid CreatePrintGrid(DataTable List)
        {
            var aktuellesGrid = List;
            DataGrid grid = new DataGrid();


            DataGridTextColumn nameColumn = new DataGridTextColumn();
            nameColumn.Header = "Name";
            nameColumn.Binding = new Binding("Name");
            nameColumn.Width = 180;
            grid.Columns.Add(nameColumn);

            DataGridTextColumn prenameColumn = new DataGridTextColumn();
            prenameColumn.Header = "Vorname";
            prenameColumn.Binding = new Binding("Vorname");
            prenameColumn.Width = 180;
            grid.Columns.Add(prenameColumn);

            DataGridTextColumn dateColumn = new DataGridTextColumn();
            dateColumn.Header = "Datum";
            dateColumn.Binding = new Binding
            {
                Path = new PropertyPath("Datum"),
                StringFormat = "dd.MM.yyyy"
            };
            dateColumn.Width = 100;
            grid.Columns.Add(dateColumn);

            DataGridTextColumn abtColumn = new DataGridTextColumn();
            abtColumn.Header = "Abteilung";
            abtColumn.Binding = new Binding
            {
                Path = new PropertyPath("Abteilung")
            };
            abtColumn.Width = 120;
            grid.Columns.Add(abtColumn);

            DataGridTextColumn zuweisungenColumn = new DataGridTextColumn();
            zuweisungenColumn.Header = "Zuweisung";
            zuweisungenColumn.Binding = new Binding("Zuweisung");
            zuweisungenColumn.Width = 180;
            grid.Columns.Add(zuweisungenColumn);

            DataGridTextColumn bemerkungColumn = new DataGridTextColumn();
            bemerkungColumn.Header = "Bemerkung";
            bemerkungColumn.Binding = new Binding("Bemerkung");
            bemerkungColumn.Width = 320;
            grid.Columns.Add(bemerkungColumn);

            grid.Width = nameColumn.Width.Value + prenameColumn.Width.Value + dateColumn.Width.Value + abtColumn.Width.Value + zuweisungenColumn.Width.Value + bemerkungColumn.Width.Value;

            grid.AutoGenerateColumns = false;
            grid.CanUserAddRows = false;

            //grid.DataContext = aktuellesGrid;

            return grid;
        }


        public void printDG(DataGrid dataGridParam, string title)
        {
            var dataGrid = dataGridParam;

            PrintDialog printDialog = new PrintDialog();
            if (printDialog.ShowDialog() == true)
            {
                FlowDocument fd = new FlowDocument();

                Paragraph p = new Paragraph(new Run(title));
                p.FontStyle = dataGrid.FontStyle;
                p.FontFamily = dataGrid.FontFamily;
                p.FontSize = 18;
                fd.Blocks.Add(p);

                Table table = new Table();
                TableRowGroup tableRowGroup = new TableRowGroup();
                TableRow r = new TableRow();
                fd.PageWidth = printDialog.PrintableAreaWidth;
                fd.PageHeight = printDialog.PrintableAreaHeight;
                fd.BringIntoView();
                fd.TextAlignment = TextAlignment.Center;
                fd.ColumnWidth = 500;

                table.CellSpacing = 0;

                var headerList = dataGrid.Columns.Select(e => e.Header.ToString()).ToList();
                List<dynamic> bindList = new List<dynamic>();


                for (int j = 0; j < headerList.Count; j++)
                {
                    int span = 0;
                    switch (j)
                    {
                        case 0:
                            span = 4;
                            break;
                        case 1:
                            span = 4;
                            break;
                        case 2:
                            span = 3;
                            break;
                        case 3:
                            span = 4;
                            break;
                        case 4:
                            span = 4;
                            break;
                        case 5:
                            span = 5;
                            break;
                        default:
                            span = 4;
                            break;
                    }

                    r.Cells.Add(new TableCell(new Paragraph(new Run(headerList[j]))));
                    r.Cells[j].ColumnSpan = span;//4;
                    r.Cells[j].Padding = new Thickness(4);



                    r.Cells[j].BorderBrush = Brushes.Black;
                    r.Cells[j].FontWeight = FontWeights.Bold;
                    r.Cells[j].Background = Brushes.DarkGray;
                    r.Cells[j].Foreground = Brushes.White;
                    r.Cells[j].BorderThickness = new Thickness(1, 1, 1, 1);

                    try
                    {
                    var binding = (dataGrid.Columns[j] as DataGridBoundColumn).Binding as Binding;

                    bindList.Add(binding.Path.Path);
                    }
                    catch (Exception)
                    {
                    }

                }
                tableRowGroup.Rows.Add(r);
                table.RowGroups.Add(tableRowGroup);
                for (int i = 0; i < dataGrid.Items.Count; i++)
                {
                    //System.Diagnostics.Debug.WriteLine(dataGrid.ItemsSource.ToString().ToLower());
                    dynamic row;
                    if (dataGrid.ItemsSource.ToString().ToLower() == "system.data.linqdataview")
                    { row = (DataRowView)dataGrid.Items.GetItemAt(i); }
                    else
                    {
                        row = dataGrid.Items.GetItemAt(i);
                    }

                    table.BorderBrush = Brushes.Gray;
                    table.BorderThickness = new Thickness(1, 1, 0, 0);
                    table.FontStyle = dataGrid.FontStyle;
                    table.FontFamily = dataGrid.FontFamily;
                    table.FontSize = 13;
                    tableRowGroup = new TableRowGroup();
                    r = new TableRow();
                    for (int j = 1; j <= 6; j++)
                    {
                        //if (row.GetType() == typeof(DataGridRow))
                        //{
                        //var x = row.GetPropertyValueForID(j, row) != null ? row.GetPropertyValueForID(j, row).ToString() : "";
                        //if (j == 3) x = x.ToString().Split(' ')[0];
                        var h = 0;
                        //r.Cells.Add(new TableCell(new Paragraph(new Run(x))));
                        switch(j)
                        {
                            case 1:
                                h = 1;
                                break;
                            case 2:
                                h = 2;
                                break;
                            case 3:
                                h = 4;
                                break;
                            case 4:
                                h = 3;
                                break;
                            case 5:
                                h = 9;
                                break;
                            case 6:
                                h = 10;
                                break;
                        }

                        if (dataGrid.ItemsSource.ToString().ToLower() == "system.data.linqdataview")
                        {
                            if (j == 3)
                                r.Cells.Add(new TableCell(new Paragraph(new Run(row.Row.ItemArray[h].ToString().Split(' ')[0]))));
                            else r.Cells.Add(new TableCell(new Paragraph(new Run(row.Row.ItemArray[h].ToString()))));

                        }
                        else
                        {
                            if (j == 3)
                                r.Cells.Add(new TableCell(new Paragraph(new Run(row.Row.ItemArray[h].ToString().Split(' ')[0]))));
                            else r.Cells.Add(new TableCell(new Paragraph(new Run(row.Row.ItemArray[h].ToString()))));
                        }


                        int span = 0;
                            switch (j - 1)
                            {
                                case 0:
                                    span = 4;
                                    break;
                                case 1:
                                    span = 4;
                                    break;
                                case 2:
                                    span = 3;
                                    break;
                                case 3:
                                    span = 4;
                                    break;
                                case 4:
                                    span = 4;
                                    break;
                                case 5:
                                    span = 5;
                                    break;
                                default:
                                    span = 4;
                                    break;
                            }

                            r.Cells[j - 1].ColumnSpan = span;// 4;
                            r.Cells[j - 1].Padding = new Thickness(4);

                            r.Cells[j - 1].BorderBrush = Brushes.DarkGray;
                            r.Cells[j - 1].BorderThickness = new Thickness(0, 0, 1, 1);
                        //}
                    }

                    tableRowGroup.Rows.Add(r);
                    table.RowGroups.Add(tableRowGroup);

                }
                fd.Blocks.Add(table);


                printDialog.PrintDocument(((IDocumentPaginatorSource)fd).DocumentPaginator, "");

            }
        }



        //public const double cm = 37;
        //public double Margin = 0.5 * cm;
        //public double PageWidth = 21 * cm;
        //public double PageHeight = 29 * cm;
        //public double RowHeight = 0.7 * cm;
        //public bool PageNumberVisibility = true;
        //public bool DateVisibility = true;
        //public double FontSize = 14;
        //public double HeaderFontSize = 14;
        //public bool IsBold = false;
        //public void PrintDataGrid(FrameworkElement header, DataGrid grid, FrameworkElement footer, PrintDialog printDialog)
        //{
        //    if (header == null) { header = new FrameworkElement(); header.Width = 1; header.Height = 1; }
        //    if (footer == null) { footer = new FrameworkElement(); footer.Width = 1; footer.Height = 1; }
        //    if (grid == null) return;

        //    Size pageSize = new Size(PageWidth, PageHeight);

        //    FixedDocument fixedDoc = new FixedDocument();
        //    fixedDoc.DocumentPaginator.PageSize = pageSize;

        //    double GridActualWidth = grid.ActualWidth == 0 ? grid.Width : grid.ActualWidth;

        //    double PageWidthWithMargin = pageSize.Width - Margin * 2;
        //    double PageHeightWithMargin = pageSize.Height - Margin * 2;



        //    // scale the header  
        //    double headerScale = (header?.Width ?? 0) / PageWidthWithMargin;
        //    double headerWidth = PageWidthWithMargin;
        //    double headerHeight = (header?.Height ?? 0) * headerScale;
        //    header.Height = headerHeight;
        //    header.Width = headerWidth;
        //    // scale the footer  
        //    double footerScale = (footer?.Width ?? 0) / PageWidthWithMargin;
        //    double footerWidth = PageWidthWithMargin;
        //    double footerHeight = (footer?.Height ?? 0) * footerScale;
        //    footer.Height = footerHeight;
        //    footer.Width = footerWidth;

        //    int pageNumber = 1;
        //    string Now = DateTime.Now.ToShortDateString();

        //    //add the header 
        //    FixedPage fixedPage = new FixedPage();
        //    fixedPage.Background = Brushes.White;
        //    fixedPage.Width = pageSize.Width;
        //    fixedPage.Height = pageSize.Height;

        //    FixedPage.SetTop(header, Margin);
        //    FixedPage.SetLeft(header, Margin);

        //    fixedPage.Children.Add(header);
        //    // its like cursor for current page Height to start add grid rows
        //    double CurrentPageHeight = headerHeight + 1 * cm;
        //    int lastRowIndex = 0;
        //    bool IsFooterAdded = false;

        //    for (; ; )
        //    {
        //        int AvaliableRowNumber;


        //        var SpaceNeededForRestRows = (CurrentPageHeight + (grid.Items.Count - lastRowIndex) * RowHeight);

        //        //To avoid printing the footer in a separate page
        //        if (SpaceNeededForRestRows > (pageSize.Height - footerHeight - Margin) && (SpaceNeededForRestRows < (pageSize.Height - Margin)))
        //            AvaliableRowNumber = (int)((pageSize.Height - CurrentPageHeight - Margin - footerHeight) / RowHeight);
        //        // calc the Avaliable Row acording to CurrentPageHeight
        //        else AvaliableRowNumber = (int)((pageSize.Height - CurrentPageHeight - Margin) / RowHeight);

        //        // create new page except first page cause we created it prev
        //        if (pageNumber > 1)
        //        {
        //            fixedPage = new FixedPage();
        //            fixedPage.Background = Brushes.White;
        //            fixedPage.Width = pageSize.Width;
        //            fixedPage.Height = pageSize.Height;
        //        }

        //        // create new data grid with  columns width and binding
        //        DataGrid gridToAdd;
        //        gridToAdd = GetDataGrid(grid, GridActualWidth, PageWidthWithMargin);


        //        FixedPage.SetTop(gridToAdd, CurrentPageHeight); // top margin
        //        FixedPage.SetLeft(gridToAdd, Margin); // left margin

        //        // add the avaliable rows to the cuurent grid 
        //        for (int i = lastRowIndex; i < grid.Items.Count && i < AvaliableRowNumber + lastRowIndex; i++)
        //        {
        //            gridToAdd.Items.Add(grid.Items[i]);
        //        }
        //        lastRowIndex += gridToAdd.Items.Count + 1;

        //        // add date
        //        TextBlock dateText = new TextBlock();
        //        if (DateVisibility) dateText.Visibility = Visibility.Visible;
        //        else dateText.Visibility = Visibility.Hidden;
        //        dateText.Text = Now;

        //        // add page number
        //        TextBlock PageNumberText = new TextBlock();
        //        if (PageNumberVisibility) PageNumberText.Visibility = Visibility.Visible;
        //        else PageNumberText.Visibility = Visibility.Hidden;
        //        PageNumberText.Text = "Page : " + pageNumber;

        //        FixedPage.SetTop(dateText, PageHeightWithMargin);
        //        FixedPage.SetLeft(dateText, Margin);

        //        FixedPage.SetTop(PageNumberText, PageHeightWithMargin);
        //        FixedPage.SetLeft(PageNumberText, PageWidthWithMargin - PageNumberText.Text.Length * 10);

        //        fixedPage.Children.Add(gridToAdd);
        //        fixedPage.Children.Add(dateText);
        //        fixedPage.Children.Add(PageNumberText);

        //        // calc Current Page Height to know the rest Height of this page
        //        CurrentPageHeight += gridToAdd.Items.Count * RowHeight;

        //        // all grid rows added
        //        if (lastRowIndex >= grid.Items.Count)
        //        {
        //            // if footer have space it will be added to the same page
        //            if (footerHeight < (PageHeightWithMargin - CurrentPageHeight))
        //            {
        //                FixedPage.SetTop(footer, CurrentPageHeight + Margin);
        //                FixedPage.SetLeft(footer, Margin);

        //                fixedPage.Children.Add(footer);
        //                IsFooterAdded = true;
        //            }
        //        }

        //        fixedPage.Measure(pageSize);
        //        fixedPage.Arrange(new Rect(new Point(), pageSize));
        //        fixedPage.UpdateLayout();

        //        PageContent pageContent = new PageContent();
        //        ((IAddChild)pageContent).AddChild(fixedPage);
        //        fixedDoc.Pages.Add(pageContent);

        //        pageNumber++;
        //        // go to start position : New page Top
        //        CurrentPageHeight = Margin;

        //        // this mean that lastRowIndex >= grid.Items.Count  and the footer dont have enough space
        //        if (lastRowIndex >= grid.Items.Count && !IsFooterAdded)
        //        {
        //            FixedPage ffixedPage = new FixedPage();
        //            ffixedPage.Background = Brushes.White;
        //            ffixedPage.Width = pageSize.Width;
        //            ffixedPage.Height = pageSize.Height;

        //            FixedPage.SetTop(footer, Margin);
        //            FixedPage.SetLeft(footer, Margin);

        //            TextBlock fdateText = new TextBlock();
        //            if (DateVisibility) fdateText.Visibility = Visibility.Visible;
        //            else fdateText.Visibility = Visibility.Hidden;
        //            dateText.Text = Now;

        //            TextBlock fPageNumberText = new TextBlock();
        //            if (PageNumberVisibility) fPageNumberText.Visibility = Visibility.Visible;
        //            else fPageNumberText.Visibility = Visibility.Hidden;
        //            fPageNumberText.Text = "Page : " + pageNumber;

        //            FixedPage.SetTop(fdateText, PageHeightWithMargin);
        //            FixedPage.SetLeft(fdateText, Margin);

        //            FixedPage.SetTop(fPageNumberText, PageHeightWithMargin);
        //            FixedPage.SetLeft(fPageNumberText, PageWidthWithMargin - PageNumberText.ActualWidth);

        //            ffixedPage.Children.Add(footer);
        //            ffixedPage.Children.Add(fdateText);
        //            ffixedPage.Children.Add(fPageNumberText);

        //            ffixedPage.Measure(pageSize);
        //            ffixedPage.Arrange(new Rect(new Point(), pageSize));
        //            ffixedPage.UpdateLayout();

        //            PageContent fpageContent = new PageContent();
        //            ((IAddChild)fpageContent).AddChild(ffixedPage);
        //            fixedDoc.Pages.Add(fpageContent);
        //            IsFooterAdded = true;
        //        }

        //        if (IsFooterAdded)
        //        {
        //            break;
        //        }
        //    }

        //    PrintFixedDocument(fixedDoc, printDialog);
        //}
        //private DataGrid GetDataGrid(DataGrid grid, double GridActualWidth, double PageWidthWithMargin)
        //{
        //    DataGrid printed = new DataGrid();


        //    // styling the grid
        //    Style rowStyle = new Style(typeof(DataGridRow));
        //    rowStyle.Setters.Add(new Setter(Control.BackgroundProperty, Brushes.White));
        //    rowStyle.Setters.Add(new Setter(Control.FontSizeProperty, FontSize));
        //    if (IsBold) rowStyle.Setters.Add(new Setter(Control.FontWeightProperty, FontWeights.Bold));
        //    rowStyle.Setters.Add(new Setter(Control.HeightProperty, RowHeight));


        //    Style columnStyle = new Style(typeof(DataGridColumnHeader));
        //    columnStyle.Setters.Add(new Setter(Control.FontSizeProperty, HeaderFontSize));
        //    columnStyle.Setters.Add(new Setter(Control.HorizontalContentAlignmentProperty, HorizontalAlignment.Center));
        //    columnStyle.Setters.Add(new Setter(Control.BorderThicknessProperty, new Thickness(0, 0.5, 0, 1.5)));
        //    columnStyle.Setters.Add(new Setter(Control.BackgroundProperty, Brushes.White));
        //    columnStyle.Setters.Add(new Setter(Control.BorderBrushProperty, Brushes.Black));
        //    columnStyle.Setters.Add(new Setter(Control.FontWeightProperty, FontWeights.SemiBold));


        //    printed.RowStyle = rowStyle;

        //    printed.VerticalGridLinesBrush = Brushes.Black;
        //    printed.HorizontalGridLinesBrush = Brushes.Black;
        //    printed.FontFamily = new FontFamily("Arial");

        //    printed.RowBackground = Brushes.White;
        //    printed.Background = Brushes.White;
        //    printed.Foreground = Brushes.Black;
        //    // get the columns of grid 
        //    foreach (var column in grid.Columns)
        //    {
        //        if (column.Visibility != Visibility.Visible) continue;

        //        DataGridTextColumn textColumn = new DataGridTextColumn();
        //        textColumn.HeaderStyle = columnStyle;
        //        textColumn.Header = column.Header;
        //        textColumn.Width = column.ActualWidth / GridActualWidth * PageWidthWithMargin;
        //        textColumn.Binding = ((DataGridTextColumn)column).Binding;
        //        printed.Columns.Add(textColumn);
        //    }            

        //    printed.BorderBrush = Brushes.Black;


        //    return printed;
        //}

        //public void PrintFixedDocument(FixedDocument fixedDoc, PrintDialog printDialog)
        //{
        //    XpsDocumentWriter writer = PrintQueue.CreateXpsDocumentWriter(printDialog.PrintQueue);
        //    writer.Write(fixedDoc, printDialog.PrintTicket);
        //}
    }
}