using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing.Imaging;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Media.Imaging;
using System.Windows;

namespace PDF_Office.Helper
{
    public enum FileExtension
    {
        JPG = 255216,
        GIF = 7173,
        PNG = 13780,
        SWF = 6787,
        RAR = 8297,
        ZIP = 8075,
        _7Z = 55122,
        VALIDFILE = 9999999
    }

    /// <summary>
    /// 页面编辑的工具类
    /// </summary>
    public static class PageEditTool
    {
        [DllImport("user32.dll")]
        private static extern IntPtr SetCapture(long hWnd);

        [DllImport("user32.dll")]
        private static extern long ReleaseCapture();

        /// <summary>
        /// 打开路径并定位文件...对于@"h:\Bleacher Report - Hardaway with the safe call ??.mp4"这样的，explorer.exe /select,d:xxx不认，用API整它
        /// </summary>
        /// <param name="filePath">文件绝对路径</param>
        [DllImport("shell32.dll", ExactSpelling = true)]
        private static extern void ILFree(IntPtr pidlList);

        [DllImport("shell32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
        private static extern IntPtr ILCreateFromPathW(string pszPath);

        [DllImport("shell32.dll", ExactSpelling = true)]
        private static extern int SHOpenFolderAndSelectItems(IntPtr pidlList, uint cild, IntPtr children, uint dwFlags);

        /// <summary>
        /// 打开文件夹浏览，并选中一个文件(对于文件名称比较不规范的，可以用这个)
        /// </summary>
        /// <param name="filePath"></param>
        public static void ExplorerFile(string filePath)
        {
            try
            {
                if (!File.Exists(filePath) && !Directory.Exists(filePath))
                    return;

                if (Directory.Exists(filePath))
                    Process.Start(@"explorer.exe", "/select,\"" + filePath + "\"");
                else
                {
                    IntPtr pidlList = ILCreateFromPathW(filePath);
                    if (pidlList != IntPtr.Zero)
                    {
                        try
                        {
                            Marshal.ThrowExceptionForHR(SHOpenFolderAndSelectItems(pidlList, 0, IntPtr.Zero, 0));
                        }
                        finally
                        {
                            ILFree(pidlList);
                        }
                    }
                }
            }
            catch { }
        }

        /// <summary>
        /// 强制捕获鼠标
        /// </summary>
        /// <param name="hwd"></param>
        public static void DOSetCapture(long hwd)
        {
            SetCapture(hwd);
        }

        public static void DoReleaseCapture()
        {
            ReleaseCapture();
        }

        /// <summary>
        /// 返回文件占有的大小
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public static string GetFileSize(string filePath)
        {
            //判断当前路径所指向的是否为文件
            if (File.Exists(filePath))
            {
                //定义一个FileInfo对象,使之与filePath所指向的文件向关联,
                //以获取其大小
                FileInfo fileInfo = new FileInfo(filePath);
                var size = fileInfo.Length;
                string strSize = "";
                if (size < 1024)
                {
                    strSize = Math.Round(size / 1024.0, 3) + " KB";
                }
                else if (size / 1024 > 1024)
                {
                    strSize = Math.Round(size / 1024 / 1024.0, 1) + " MB";
                }
                else
                {
                    strSize = Math.Round(size / 1024.0, 1) + " KB";
                }
                return strSize;
            }
            else
            {
                return string.Empty;
            }
        }

        /// <summary>
        /// 用照片查看器查看指定路径的图片
        /// </summary>
        /// <param name="Path">带文件名的绝对路径</param>
        public static void BrowsePicture(string Path)
        {
            //建立新的系统进程
            System.Diagnostics.Process process = new System.Diagnostics.Process();
            //设置文件名，此处为图片的真实路径+文件名
            process.StartInfo.FileName = Path;
            //此为关键部分。设置进程运行参数，此时为最大化窗口显示图片。
            process.StartInfo.Arguments = "rundll32.exe C://WINDOWS//system32//shimgvw.dll,ImageView_Fullscreen";
            //此项为是否使用Shell执行程序，因系统默认为true，此项也可不设，但若设置必须为true
            process.StartInfo.UseShellExecute = true;
            //此处可以更改进程所打开窗体的显示样式，可以不设
            process.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Normal;
            process.Start();
            process.Dispose();
        }

        /// <summary>
        /// 校验PageRange 输入是否合法，且可返回List<int> Pages  存放的索引值
        /// </summary>
        /// <param name="pageList">返回的页面集合</param>
        /// <param name="pageRange">需要判断的文本</param>
        /// <param name="count">页面总数</param>
        /// <param name="enumerationSeparator">例 new char[] { ',' }</param>
        /// <param name="rangeSeparator">例 new char[] { '-' }</param>
        /// <param name="inittag"></param>
        /// <returns></returns>
        public static bool GetPagesInRange(ref List<int> pageList, string pageRange, int count, char[] enumerationSeparator, char[] rangeSeparator, bool inittag = false)
        {
            string[] rangeSplit = pageRange.Split(enumerationSeparator);//根据分隔符 拆分字符串

            pageList.Clear();

            foreach (string range in rangeSplit)
            {
                int starttag = 1;
                if (inittag)
                {
                    starttag = 0;
                }
                if (range.Contains("-"))//连续页
                {
                    try
                    {
                        string[] limits = range.Split(rangeSeparator);//对子字符串再根据”-“ 拆分
                        if (limits.Length >= 2 && !string.IsNullOrWhiteSpace(limits[0]) && !string.IsNullOrWhiteSpace(limits[1]))
                        {
                            int start = int.Parse(limits[0]);
                            int end = int.Parse(limits[1]);

                            if ((start < starttag) || (end > count) || (start > end))
                            {
                                //throw new Exception(string.Format("Invalid page(s) in range {0} - {1}", start, end));
                                return false;
                            }

                            for (int i = start; i <= end; ++i)
                            {
                                if (pageList.Contains(i))
                                {
                                    // throw new Exception(string.Format("Invalid page(s) in range {0} - {1}", start, end));
                                    return false;
                                }

                                pageList.Add(i - 1);
                            }
                            continue;
                        }
                    }
                    catch (Exception ex)
                    {
                        // MessageBox.Show("请检查符号或页码范围是否正确。","提示",MessageBoxButton.OKCancel,MessageBoxImage.Warning);
                        return false;
                    }
                }
                int pageNr;
                try
                {
                    // Single page
                    pageNr = int.Parse(range);//单页
                }
                catch (Exception)//格式不正确时
                {
                    return false;
                }
                if (pageNr < starttag || pageNr > count)
                {
                    return false;
                    //throw new Exception(string.Format("Invalid page {0}", pageNr));
                }
                if (pageList.Contains(pageNr))
                {
                    return false;
                    // throw new Exception(string.Format("Invalid page {0}", pageNr));
                }
                pageList.Add(pageNr - 1);
            }
            return true;
        }

        /// <summary>
        ///  返回指定路径的图标
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static BitmapSource ToBitmapSource(string path)
        {
            System.Drawing.Icon ico = System.Drawing.Icon.ExtractAssociatedIcon(path);
            System.Drawing.Bitmap bitmap = ico.ToBitmap();
            BitmapSource returnSource;
            try
            {
                returnSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(bitmap.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
            }
            catch
            {
                returnSource = null;
            }
            return returnSource;
        }

        public static string GetPageParmFromList(List<int> pagesList)
        {
            string pageParam = "";
            if (pagesList.Count != 0)
            {
                pagesList.Sort();//先对页码排序

                for (int i = 0; i < pagesList.Count; i++)
                {
                    if (i == 0)
                    {
                        pageParam += pagesList[0].ToString();
                    }
                    else
                    {
                        if (pagesList[i] == pagesList[i - 1] + 1)//页码连续
                        {
                            if (i >= 2)
                            {
                                if (pagesList[i - 1] != pagesList[i - 2] + 1)
                                    pageParam += "-";
                            }
                            else
                                pageParam += "-";

                            if (i == pagesList.Count - 1)
                            {
                                pageParam += pagesList[i].ToString();
                            }
                        }
                        else//页码不连续时
                        {
                            if (i >= 2)
                            {
                                if (pagesList[i - 1] == pagesList[i - 2] + 1)
                                    pageParam += pagesList[i - 1].ToString();
                            }
                            pageParam += "," + pagesList[i].ToString();
                        }
                    }
                }
            }
            return pageParam;
        }

        /// <summary>
        /// 检测文件是否重复  追加尾号
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static string CreateFilePath(string path)
        {
            int i = 1;
            string oldDestName = path;
            do
            {
                if (File.Exists(path))
                {
                    int lastDot = oldDestName.LastIndexOf('.');

                    string fileExtension = string.Empty;

                    string fileName = oldDestName;

                    if (lastDot > 0)
                    {
                        fileExtension = fileName.Substring(lastDot);

                        fileName = fileName.Substring(0, lastDot);
                    }

                    path = fileName + string.Format(@"({0})", i) + fileExtension;
                }
                ++i;
            } while (File.Exists(path));
            return path;
        }

        /// <summary>
        /// 检查文件夹是否重复  追加尾号
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static string CreateFolder(string folder)
        {
            try
            {
                int i = 1;
                string oldDestName = folder;
                DirectoryInfo info = new DirectoryInfo(folder);
                do
                {
                    info = new DirectoryInfo(folder);
                    if (info.Exists)
                    {
                        string fileName = oldDestName;

                        folder = fileName + string.Format(@"({0})", i);
                    }
                    ++i;
                } while (info.Exists);
                info.Create();
            }
            catch { return null; }
            return folder;
        }

        /// <summary>
        /// 文件名称是否合法
        /// </summary>
        /// <param name="fileName">文件名</param>
        /// <returns>返回true是合法</returns>
        public static bool IsValidFileName(string fileName)
        {
            try
            {
                foreach (char invalidChar in Path.GetInvalidFileNameChars())
                {
                    if (fileName.Contains(invalidChar.ToString()))
                        return false;
                }
                return true;
            }
            catch
            {
                return false;
            }
        }

        /// <summary>
        /// 悬浮提示框(气泡形式)
        /// </summary>
        /// <param name="control">显示提示的控件</param>
        /// <param name="tipMsg">内容</param>
        /// <param name="tipTitle">标题</param>
        /// <param name="delay">调用该函数而显示时间</param>
        /// <param name="autoPopDelay">悬浮控件上的显示时间</param>
        public static async void ShowToolTip(Control control, string tipMsg, string tipTitle = "", int delay = 2000, int autoPopDelay = 0)
        {
            if (control == null || string.IsNullOrEmpty(tipMsg))
                return;
            try
            {
                ToolTip toolTip = new ToolTip();

                //if (string.IsNullOrEmpty(tipTitle))
                //    tipTitle = App.MainPageLoader.GetString("Main_HintWarningTilte");

                toolTip.ToolTipTitle = tipTitle;
                toolTip.SetToolTip(control, tipMsg);
                toolTip.IsBalloon = true;
                toolTip.ToolTipIcon = ToolTipIcon.Warning;
                toolTip.ShowAlways = false;
                toolTip.AutoPopDelay = autoPopDelay;
                toolTip.Show(tipMsg, control);
                await Task.Delay(delay);
                toolTip.Hide(control);
            }
            catch { }
        }

        public static BitmapImage ToBitmapImage(System.Drawing.Bitmap ImageOriginal)
        {
            System.Drawing.Bitmap ImageOriginalBase = new System.Drawing.Bitmap(ImageOriginal);
            BitmapImage bitmapImage = new BitmapImage();
            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
            {
                //ImageOriginalBase.Save(ms, ImageOriginalBase.RawFormat);
                ImageOriginalBase.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
                bitmapImage.BeginInit();
                bitmapImage.StreamSource = ms;
                bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
                bitmapImage.EndInit();
                bitmapImage.Freeze();
            }
            return bitmapImage;
        }

        /// <summary>
        /// 获取图片的旋转角度
        /// 获取后可以 通过bitmap的RotateFlip 回位
        /// </summary>
        /// <param name="path">文件路径</param>
        /// <returns></returns>
        public static int GetPictureRotation(string path)
        {
            int rotate = 0;
            using (var image = System.Drawing.Image.FromFile(path))
            {
                foreach (var prop in image.PropertyItems)
                {
                    if (prop.Id == 0x112)
                    {
                        if (prop.Value[0] == 6)
                            rotate = 90;
                        if (prop.Value[0] == 8)
                            rotate = -90;
                        if (prop.Value[0] == 3)
                            rotate = 180;
                        prop.Value[0] = 1;
                    }
                }
            }
            return rotate;
        }

        public static byte[] GetImageByteFromPath(string ImagePath, string fileExt, out double width, out double height)
        {
            try
            {
                #region 跟图章一样的转换方法。

                if (ImagePath != null && ImagePath.Length > 0 && File.Exists(ImagePath))
                {
                    FileStream fileData = File.OpenRead(ImagePath);
                    BitmapFrame frame = null;
                    width = 0;
                    height = 0;

                    if (fileExt.Contains(".jpg") || fileExt.Contains(".jpeg"))
                    {
                        JpegBitmapDecoder decoder = (JpegBitmapDecoder)JpegBitmapDecoder.Create(fileData, BitmapCreateOptions.None, BitmapCacheOption.Default);
                        frame = decoder.Frames[0];
                        width = frame.Width;
                        height = frame.Height;
                    }
                    else if (fileExt.Contains(".png"))
                    {
                        PngBitmapDecoder decoder = (PngBitmapDecoder)PngBitmapDecoder.Create(fileData, BitmapCreateOptions.None, BitmapCacheOption.Default);
                        frame = decoder.Frames[0];
                        width = frame.Width;
                        height = frame.Height;
                    }
                    else if (fileExt.Contains(".bmp"))
                    {
                        BmpBitmapDecoder decoder = (BmpBitmapDecoder)BmpBitmapDecoder.Create(fileData, BitmapCreateOptions.None, BitmapCacheOption.Default);
                        frame = decoder.Frames[0];
                        width = frame.Width;
                        height = frame.Height;
                    }
                    else//默认采用png的解码方式
                    {
                        BitmapDecoder decoder = BitmapDecoder.Create(fileData, BitmapCreateOptions.None, BitmapCacheOption.Default);
                        frame = decoder.Frames[0];
                        width = frame.Width;
                        height = frame.Height;
                    }

                    if (frame != null)
                    {
                        var ImageArray = new byte[frame.PixelWidth * frame.PixelHeight * 4];
                        frame.CopyPixels(ImageArray, frame.PixelWidth * 4, 0);
                        return ImageArray;
                    }
                    return null;
                }
                width = 0;
                height = 0;
                return null;

                #endregion 跟图章一样的转换方法。
            }
            catch (Exception ex)
            {
                width = 0;
                height = 0;
                return null;
            }
        }

        /// <summary>
        /// BitmapImage 转Bitmap
        /// </summary>
        /// <param name="bitmapImage"></param>
        /// <param name="isPng"></param>
        /// <returns></returns>
        public static Bitmap GetBitmapByBitmapImage(BitmapImage bitmapImage, bool isPng = false)
        {
            Bitmap bitmap;
            MemoryStream outStream = new MemoryStream();
            BitmapEncoder enc = new JpegBitmapEncoder();
            if (isPng)
            {
                enc = new PngBitmapEncoder();
            }
            enc.Frames.Add(BitmapFrame.Create(bitmapImage));
            enc.Save(outStream);
            bitmap = new Bitmap(outStream);
            return bitmap;
        }

        /// <summary>
        /// 根据图片数据判断图片类型
        /// </summary>
        /// <param name="fileName"></param>
        /// <returns></returns>
        public static FileExtension CheckTextFile(string fileName)
        {
            FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            System.IO.BinaryReader br = new System.IO.BinaryReader(fs);
            string fileType = string.Empty; ;
            try
            {
                byte data = br.ReadByte();
                fileType += data.ToString();
                data = br.ReadByte();
                fileType += data.ToString();
                FileExtension extension;
                try
                {
                    extension = (FileExtension)Enum.Parse(typeof(FileExtension), fileType);
                }
                catch
                {
                    extension = FileExtension.VALIDFILE;
                }
                return extension;
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    br.Close();
                }
            }
        }

        /// <summary>
        /// 压缩图片到600*600以内,压缩成功后返回压缩完成的缓存路径
        /// 如果压缩 失败 返回原图路径
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public static string CompressImage(string filePath, int maxwidth = 600)
        {
            try
            {
                string sourcepath = filePath;
                var guid = Guid.NewGuid().ToString();
                string folder = Path.Combine(App.CurrentPath, "Temp");
                if (!Directory.Exists(folder))
                {
                    Directory.CreateDirectory(folder);
                }
                var path = System.IO.Path.Combine(App.CurrentPath, "Temp", guid);

                Bitmap bitmap = new Bitmap(sourcepath);

                var b = bitmap;
                //bitmap.Dispose();

                double scale = Math.Min((double)maxwidth / b.Width, (double)maxwidth / b.Height);
                scale = Math.Min(scale, 1);
                System.Drawing.Size newsize = new System.Drawing.Size(maxwidth, maxwidth);
                newsize.Width = (int)(scale * b.Width);
                newsize.Height = (int)(scale * b.Height);

                if (!File.Exists(path))
                {
                    if (CheckTextFile(sourcepath) == FileExtension.PNG)
                    {
                        using (var bp = new Bitmap(b, (int)newsize.Width, (int)newsize.Height))
                        {
                            bp.Save(path, ImageFormat.Png);
                        }
                    }
                    else
                    {
                        using (var bp = new Bitmap(b, (int)newsize.Width, (int)newsize.Height))
                        {
                            bp.Save(path, ImageFormat.Jpeg);
                        }
                    }
                }
                return path;
            }
            catch
            {
                return filePath;
            }
        }
    }
}