using ICSharpCode.SharpZipLib.Zip;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace
 
 Media
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            FileUploadDTO dt = new FileUploadDTO();
            DateTime startTime;
            TimeSpan resultTime;
            
 
ulong dateVal = 0;
            OpenFileDialog f1 = new OpenFileDialog();
            f1.Title = "檔案上傳";
            f1.Filter = "壓縮包(*.zip)|*.zip";
            string deletepath = string.Empty;
            // string mediapath = string.Empty; 
            if (f1.ShowDialog() == DialogResult.OK)
            {
                FileInfo fileInfo 
 
= new FileInfo(f1.FileName);
              //  mediapath = f1.FileName; //壓縮包伺服器上路徑
                int K = 0;
                if (!string.IsNullOrEmpty(f1.FileName))
                {
                    startTime = System.DateTime.Now;
                    //傳入壓縮檔案路徑在伺服器上進行解壓，伺服器上生成一個名為測試的資料夾
                    UnpackFiles(f1.FileName, Path.GetDirectoryName(f1.FileName) + "\\測試\\");
                    string path = Path.GetDirectoryName(f1.FileName) + "\\測試\\" + Path.GetFileNameWithoutExtension(f1.FileName);//解壓後文件路徑
                    deletepath = Path.GetDirectoryName(f1.FileName) + "\\測試";//測試資料夾路徑
                    //迴圈遍歷解壓後的檔案，獲取裡面的資料
                    List<string> list = GetAllFiles(path);
                    foreach (var i in list)
                    {
                        dt.name = Path.GetFileName(i);//9527.txt
                        dt.ext = Path.GetExtension(i);
                        Image image = Image.FromFile( Path.GetFullPath(i));
                        dt.Data = ImageToBytes(image);
                        dt.Offset = 0;
                        Mediaupload _fi = new Mediaupload();
                        _fi.segmentReadUpload(dt);
                        K++;
                    }
                    resultTime = System.DateTime.Now - startTime;
                    dateVal = (ulong)resultTime.TotalSeconds;
                    if (MessageBox.Show(string.Format("匯入成功！共匯入{0}條,耗時{1}秒", K, dateVal), "提示", MessageBoxButtons.OK) == System.Windows.Forms.DialogResult.OK)
                    {
                       // Directory.Delete(deletepath, true);//刪除解壓檔案
                        //Directory.Delete(mediapath, true);//刪除上傳的壓縮包檔案
                        Dispose();
                        Application.Exit();
                    }
                }
            }
        }
        /// <summary>
        /// 將照片轉為byte[]
        /// </summary>
        /// <param name="image"></param>
        /// <returns></returns>
        public static byte[] ImageToBytes(Image image)
        {
            ImageFormat format = image.RawFormat;
            using (MemoryStream ms = new MemoryStream())
            {
                image.Save(ms, format);
                return ms.ToArray();
            }
        }
        /// <summary> 
        /// 解壓縮 
        /// </summary> 
        /// <param name="file">待解壓檔名(包含物理路徑)</param> 
        /// <param name="dir"> 解壓到哪個目錄中(包含物理路徑)</param> 
        public static bool UnpackFiles(string file, string dir)
        {
            try
            {
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }
                //使用ZipInputStream需要引入ICSharpCode.SharpZipLib
                ZipInputStream s = new ZipInputStream(File.OpenRead(file));
                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = Path.GetDirectoryName(theEntry.Name);
                    string fileName = Path.GetFileName(theEntry.Name);
                    if (directoryName != String.Empty)
                    {
                        Directory.CreateDirectory(dir + directoryName);
                    }
                    if (fileName != String.Empty)
                    {
                        FileStream streamWriter = File.Create(dir + theEntry.Name);
                        int size = 2048;
                        byte[] data = new byte[2048];
                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                        streamWriter.Close();
                    }
                }
                s.Close();
                return true;
            }
            catch (Exception)
            {
                throw;
            }
        }
        private List<string> GetAllFiles(string path)
        {
            DirectoryInfo dInfo = new DirectoryInfo(path);
            List<string> list = new List<string>();
            //遍歷該資料夾
            // GetFloder(dInfo);
            foreach (FileInfo fileitem in dInfo.GetFiles())
            {
                if (fileitem.Extension == ".png" || fileitem.Extension == ".jpg" || fileitem.Extension == ".PNG" || fileitem.Extension == ".JPG")
                {
                    list.Add(fileitem.FullName);
                }
            }
            return list;

        }

    }
}

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