using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Drawing.Printing;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Security.Cryptography;
using Curtain.Log;

namespace Dongke.WinForm.Controls.InvoiceLayout
{
    public class InvoiceLayoutPrinter
    {
        #region 常量
        #region 保存、读取相关
        // TODO 加密保存 解密读取
        private static byte[] KEY = new byte[] { 106, 240, 243, 74, 29, 163, 145, 29, 39, 65, 118, 96, 247, 237, 40, 121, 116, 10, 14, 50, 139, 117, 244, 163, 193, 190, 184, 66, 8, 185, 78, 73 };
        private static byte[] IV = new byte[] { 26, 122, 25, 28, 97, 211, 152, 32, 223, 110, 120, 242, 170, 35, 96, 93 };
        //private static ICryptoTransform _decryptor = null;
        #endregion 保存、读取相关
        #endregion

        #region 成员变量
        private PropertyOfLayoutBox Property = null;
        private GridItem OneGridItem = null;
        private List<LayoutItem> LayoutItems = null;
        private int PageWidthPixel = 0;
        private int PageHeightPixel = 0;
        private RectangleF BackImgRectangleF = RectangleF.Empty;
        private float _allOffsetX = 0;
        private float _allOffsetY = 0;

        private int _printPageNum = 1;                  // 打印页的当前页码
        private int _printTotalPageNum = 1;             // 总页数

        private DataRow _printData = null;
        private DataTable _printGridData = null;

        private PrintDocument _printDocument = new PrintDocument();
        #endregion

        #region 构造函数
        static InvoiceLayoutPrinter()
        {
            //Rijndael age = Rijndael.Create();
            //_decryptor = age.CreateDecryptor(KEY, IV);
        }

        private InvoiceLayoutPrinter()
        {
            _printDocument.DocumentName = "LayoutDocument";
            _printDocument.BeginPrint += new PrintEventHandler(this.printDocument_BeginPrint);
            _printDocument.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
        }
        #endregion

        private void printDocument_BeginPrint(object sender, PrintEventArgs e)
        {
        }

        private void PrintDocument_PrintPage(object sender, PrintPageEventArgs e)
        {
            try
            {
                e.Graphics.PageUnit = GraphicsUnit.Millimeter;
                e.HasMorePages = DrawPage(e.Graphics);
            }
            catch (Exception ex)
            {
                Logger.Error(ex);
            }
        }

        public static List<Image> Print(byte[] layout, DataRow data, DataTable detail)
        {
            if (layout == null || layout.Length == 0)
            {
                throw new System.ArgumentNullException("layout");
            }
            if (data == null)
            {
                throw new System.ArgumentNullException("data");
            }
            //if (detail == null || detail.Rows.Count == 0)
            //{
            //    throw new System.ArgumentNullException("detail");
            //}
            try
            {
                InvoiceLayoutPrinter printer = new InvoiceLayoutPrinter();
                printer.LayoutItems = new List<LayoutItem>();
                printer.ReadLayout(layout);
                printer._printData = data;
                printer._printGridData = detail;

                //return printer.DrawImages().ToArray();
                return printer.DrawImages();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static void Print(string printerName, short copies, byte[] layout, DataRow data, DataTable detail)
        {
            if (layout == null || layout.Length == 0)
            {
                throw new System.ArgumentNullException("layout");
            }
            if (data == null)
            {
                throw new System.ArgumentNullException("data");
            }
            //if (detail == null || detail.Rows.Count == 0)
            //{
            //    throw new System.ArgumentNullException("detail");
            //}
            try
            {
                InvoiceLayoutPrinter printer = new InvoiceLayoutPrinter();
                printer.LayoutItems = new List<LayoutItem>();
                printer.ReadLayout(layout);
                printer._printData = data;
                printer._printGridData = detail;

                printer._printDocument.PrinterSettings.PrinterName = printerName;
                printer._printDocument.PrinterSettings.Copies = copies;

                printer._printDocument.Print();

                //return printer.DrawImages().ToArray();
                //return printer.DrawImages();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        #region 票据打印
        private void ReadLayout(byte[] layout)
        {
            try
            {
                using (MemoryStream stream = new MemoryStream(layout))
                {
                    stream.Position = 0;
                    // 反序列化
                    BinaryFormatter formatter = new BinaryFormatter();

                    // TODO 解密读取
                    //if (CryptoStream)
                    if (true)
                    {
                        //using (CryptoStream cStream = new CryptoStream(stream, _decryptor, CryptoStreamMode.Read))
                        Rijndael age = Rijndael.Create();
                        using (CryptoStream cStream = new CryptoStream(stream, age.CreateDecryptor(KEY, IV), CryptoStreamMode.Read))
                        {
                            this.Property = (PropertyOfLayoutBox)formatter.Deserialize(cStream);
                        }
                    }
                    else
                    {
                        this.Property = (PropertyOfLayoutBox)formatter.Deserialize(stream);
                    }
                    //_lastItemRF = propertyOflayoutBox.LastItemRF;
                    //_newItemID = propertyOflayoutBox.NewItemID;
                    //_paperHeight = propertyOflayoutBox.PaperHeight;
                    //_paperWidth = propertyOflayoutBox.PaperWidth;
                    //if (_zoomType != ZoomType.Whole)
                    //{
                    //    ChangePaperSize();
                    //}
                    //else
                    //{
                    //    InitializeZoom();
                    //}
                    //paperArea.BackgroundImage = propertyOflayoutBox.BackgroundImage;
                    //_backgroundImageName = propertyOflayoutBox.BackgroundImageName;
                    //_isPrintBackground = propertyOflayoutBox.PrintBackground;
                    //_isPrintAreaVisible = propertyOflayoutBox.PrintAreaVisible;
                    ArrayList items = this.Property.Items;

                    if (items != null && 0 < items.Count)
                    {
                        foreach (LayoutItem item in items)
                        {
                            //item.Init(this, false);
                            //item.Init();
                            this.LayoutItems.Add(item);
                            if (item.ItemType == ItemType.Grid)
                            {
                                this.OneGridItem = item as GridItem;
                                if (this.OneGridItem.HeadRowsHeight == 0)
                                {
                                    this.OneGridItem.HeadRowsHeight = this.OneGridItem.RowsHeight;
                                }
                            }
                        }
                    }
                    //paperArea.Select();
                    //RefreshItemsBound();
                    ////paperArea.Refresh();
                    //return true;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private List<Image> DrawImages()
        {
            this.PageWidthPixel = LayoutCommon.MillimeterToPixel(this.Property.PaperWidth);
            this.PageHeightPixel = LayoutCommon.MillimeterToPixel(this.Property.PaperHeight);

            this._printPageNum = 1;
            this._printTotalPageNum = 1;
            //if (this.OneGridItem != null)
            //{
            //    foreach (LayoutItem item in this.LayoutItems)
            //    {
            //        if (item.ItemType == ItemType.Grid)
            //        {
            //            GridItem gItem = (item as GridItem);
            //            gItem.PrintGridSource = this._printGridData;
            //            _printTotalPageNum = Math.Max(_printTotalPageNum, gItem.PrintTotalPageNum);
            //        }
            //    }
            //}

            List<Image> images = new List<Image>();
            //Bitmap pageImage = null;
            //Graphics pageGraphics = null;

            bool hasNextPage = true;
            while (hasNextPage)
            {
                Bitmap pageImage = new Bitmap(this.PageWidthPixel, this.PageHeightPixel);
                pageImage.SetResolution(LayoutCommon.DPI, LayoutCommon.DPI);
                using (Graphics pageGraphics = Graphics.FromImage(pageImage))
                {
                    // TODO 白色背景
                    pageGraphics.Clear(Color.White);
                    //pageGraphics.FillRectangle(Brushes.White, pageGraphics.ClipBounds);
                    pageGraphics.PageUnit = GraphicsUnit.Millimeter;

                    hasNextPage = DrawPage(pageGraphics);
                    images.Add(pageImage);
                }
            }

            return images;
        }

        private bool DrawPage(Graphics graphics)
        {
			//try
			{
				// 背景打印
				if (this.Property.PrintBackground)
				{
					PrintBackgroundImage(graphics);
				}

				// Item打印
				foreach (LayoutItem layoutItem in this.LayoutItems)
				{
					switch (layoutItem.ItemType)
					{
						case ItemType.Text:
							DrawTextItem(graphics, (TextItem)layoutItem);
							break;
						case ItemType.Image:
							DrawImageItem(graphics, (ImageItem)layoutItem);
							break;
						case ItemType.Rectangle:
							DrawRectangleItem(graphics, (RectangleItem)layoutItem);
							break;
						case ItemType.Ellipse:
							DrawEllipseItem(graphics, (EllipseItem)layoutItem);
							break;
						//case ItemType.Line:
						//    DrawLineItem(graphics, (LineItem)layoutItem);
						//    break;
						case ItemType.Grid:
							DrawGridItem(graphics, (GridItem)layoutItem);
							break;
						case ItemType.PageNum:
							DrawPageNumItem(graphics, (PageNumItem)layoutItem);
							break;
						case ItemType.TotalText:
							DrawTotalTextItem(graphics, (TotalTextItem)layoutItem);
							break;
						default:
							//throw new NotImplementedException();
							break;
					}
				}

				// 表格Item是否有下一页
				if (_printPageNum < _printTotalPageNum)
				{
					_printPageNum++;
					//e.HasMorePages = true;
					return true;
				}

				return false;
			}
			//catch (Exception ex)
			//{
			//	throw ex;
			//}
        }

        #region 绘制
        /// <summary>
        /// 打印背景图片
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        private void PrintBackgroundImage(Graphics graphics)
        {
            if (this.Property.BackgroundImage != null)
            {
                if (this.BackImgRectangleF.IsEmpty)
                {
                    // 背景图片的高宽比例
                    float imgWHRate = (float)this.Property.BackgroundImage.Width / (float)this.Property.BackgroundImage.Height;
                    // 打印纸张的高宽比例
                    float paperWHRate = this.Property.PaperWidth / this.Property.PaperHeight;

                    // 缩放背景图片，但保持图片高宽比例
                    if (imgWHRate > paperWHRate)
                    {
                        BackImgRectangleF.Width = this.Property.PaperWidth;
                        BackImgRectangleF.Height = this.Property.PaperWidth / imgWHRate;
                        BackImgRectangleF.X = 0;
                        BackImgRectangleF.Y = (this.Property.PaperHeight - BackImgRectangleF.Height) / 2 + 0;
                    }
                    else
                    {
                        BackImgRectangleF.Width = this.Property.PaperHeight * imgWHRate;
                        BackImgRectangleF.Height = this.Property.PaperHeight;
                        BackImgRectangleF.X = (this.Property.PaperWidth - BackImgRectangleF.Width) / 2 + 0;
                        BackImgRectangleF.Y = 0;
                    }
                }

                // 在指定的范围绘制背景图片
                graphics.DrawImage(this.Property.BackgroundImage, BackImgRectangleF);
            }
        }

        /// <summary>
        /// 打印文本Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="textItem">文本Item</param>
        private void DrawTextItem(Graphics graphics, TextItem textItem)
        {
            // 文本Item打印范围
            RectangleF rectangleFM = new RectangleF(
                _allOffsetX + textItem.Left,
                _allOffsetY + textItem.Top,
                textItem.Width,
                textItem.Height);

            RectangleF rectangleF = rectangleFM;
            rectangleF.Inflate(0 - LayoutConsts.TEXT_MARGIN, 0 - LayoutConsts.TEXT_MARGIN);
            rectangleFM.Height -= LayoutConsts.TEXT_MARGIN;

            object value = null;
            if (this._printData.Table.Columns.Contains(textItem.DataMember))
            {
                value = this._printData[textItem.DataMember];
            }
            textItem.PrintTextItem(value, graphics, rectangleFM, rectangleF);
        }

        /// <summary>
        /// 打印图片Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="imageItem">图片Item</param>
        private void DrawImageItem(Graphics graphics, ImageItem imageItem)
        {
            // 图片Item打印范围
            RectangleF rectangleF = new RectangleF(
                _allOffsetX + imageItem.Left,
                _allOffsetY + imageItem.Top,
                imageItem.Width,
                imageItem.Height);
            // 在指定的范围绘制图片Item
            LayoutUtility.DrawImage(graphics, rectangleF, imageItem.Image);
        }

        /// <summary>
        /// 打印矩形Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="rectangleItem">矩形Item</param>
        private void DrawRectangleItem(Graphics graphics, RectangleItem rectangleItem)
        {
            // 矩形Item打印范围
            RectangleF rectangleF = new RectangleF(
                _allOffsetX + rectangleItem.Left,
                _allOffsetY + rectangleItem.Top,
                rectangleItem.Width,
                rectangleItem.Height);
            float lineWidthDraw = rectangleItem.LineWidth;
            // 在指定的范围绘制矩形Item
            LayoutUtility.DrawRectangle(graphics, rectangleF, rectangleItem.LineColor,
                rectangleItem.FillColor, lineWidthDraw, rectangleItem.Transparent);
        }

        /// <summary>
        /// 打印椭圆Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="ellipseItem">椭圆Item</param>
        private void DrawEllipseItem(Graphics graphics, EllipseItem ellipseItem)
        {
            // 椭圆Item打印范围
            RectangleF rectangleF = new RectangleF(
                _allOffsetX + ellipseItem.Left,
                _allOffsetY + ellipseItem.Top,
                ellipseItem.Width,
                ellipseItem.Height);
            float lineWidthDraw = ellipseItem.LineWidth;
            // 在指定的范围绘制椭圆Item
            LayoutUtility.DrawEllipse(graphics, rectangleF, ellipseItem.LineColor,
                ellipseItem.FillColor, lineWidthDraw, ellipseItem.Transparent);
        }

        /// <summary>
        /// 打印表格Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="gridItem">表格Item</param>
        private void DrawGridItem(Graphics graphics, GridItem gridItem)
        {
            // 表格Item打印范围
            RectangleF rectangleF = new RectangleF(
                _allOffsetX + gridItem.Left,
                _allOffsetY + gridItem.Top,
                gridItem.Width,
                gridItem.Height);

            // 在指定的范围绘制表格Item
            //gridItem.DrawGridItem(graphics, rectangleF, 1, _printPageNum);
            gridItem.PrintGridItem(graphics, rectangleF, _printPageNum);
        }

        /// <summary>
        /// 打印页码Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="pageNumItem">页码Item</param>
        private void DrawPageNumItem(Graphics graphics, PageNumItem pageNumItem)
        {
            // 文本Item打印范围
            RectangleF rectangleFM = new RectangleF(
                 _allOffsetX + pageNumItem.Left,
                _allOffsetY + pageNumItem.Top,
                pageNumItem.Width,
                pageNumItem.Height);

            RectangleF rectangleF = rectangleFM;
            rectangleF.Inflate(0 - LayoutConsts.TEXT_MARGIN, 0 - LayoutConsts.TEXT_MARGIN);
            rectangleFM.Height -= LayoutConsts.TEXT_MARGIN;

            // 在指定的范围绘制文本Item
            LayoutUtility.DrawText(graphics,
                                   rectangleFM,
                                   rectangleF,
                                   pageNumItem.GetPrintText(this._printPageNum, this._printTotalPageNum),
                                   pageNumItem.Font,
                                   pageNumItem.TextColor,
                                   0,
                                   0,
                                   0,
                                   pageNumItem.TextAlign,
                                   pageNumItem.TextAlignVertical,
                                   false,
                                   false,
                                   false);
        }

        /// <summary>
        /// 打印合计Item
        /// </summary>
        /// <param name="graphics">用于绘制的System.Drawing.Graphics</param>
        /// <param name="totalTextItem">合计Item</param>
        private void DrawTotalTextItem(Graphics graphics, TotalTextItem totalTextItem)
        {
            // 文本Item打印范围
            RectangleF rectangleFM = new RectangleF(
                _allOffsetX + totalTextItem.Left,
                _allOffsetY + totalTextItem.Top,
                totalTextItem.Width,
                totalTextItem.Height);

            RectangleF rectangleF = rectangleFM;
            rectangleF.Inflate(0 - LayoutConsts.TEXT_MARGIN, 0 - LayoutConsts.TEXT_MARGIN);
            rectangleFM.Height -= LayoutConsts.TEXT_MARGIN;

            if (_printPageNum != _printTotalPageNum && totalTextItem.NotTotalValue != "[#合计值#]")
            {
                LayoutUtility.DrawText(graphics,
                                       rectangleFM,
                                       rectangleF,
                                       totalTextItem.NotTotalValue,
                                       totalTextItem.NotTotalFont,
                                       totalTextItem.NotTotalColor,
                                       totalTextItem.LineSpace,
                                       totalTextItem.CharacterSpace,
                                       totalTextItem.CharacterCount,
                                       totalTextItem.NotTotalAlign,
                                       totalTextItem.NotTotalAlignVertical,
                                       totalTextItem.Wrap,
                                       totalTextItem.Clip,
                                       false);
                return;
            }
            // 在指定的范围绘制文本Item

            object value = null;
            if (this._printData.Table.Columns.Contains(totalTextItem.DataMember))
            {
                value = this._printData[totalTextItem.DataMember];
            }
            value = totalTextItem.ResetTextValue(value, true);
            LayoutUtility.DrawText(graphics,
                                   rectangleFM,
                                   rectangleF,
                                   (value == null? "": value.ToString()),
                                   totalTextItem.Font,
                                   totalTextItem.TextColor,
                                   totalTextItem.LineSpace,
                                   totalTextItem.CharacterSpace,
                                   totalTextItem.CharacterCount,
                                   totalTextItem.TextAlign,
                                   totalTextItem.NotTotalAlignVertical,
                                   totalTextItem.Wrap,
                                   totalTextItem.Clip,
                                   false);
        }
        #endregion
        #endregion
    }
}