using System;
using System.ComponentModel;
using System.IO;
using System.IO.Compression;
using System.Net;
using System.Text;
using System.Windows.Forms;
//using Ionic.Zip;


namespace ChangKeTec.Wms.Updater
{
    public partial class FormAutoUpdate : Form
    {
        readonly Timer timer = new Timer();
        readonly string _remoteZipFile = GlobalVar.ServerUrl+GlobalVar.FilePath+"/"+GlobalVar.FileName;
        readonly string _localZipFile = Application.StartupPath+"\\"+GlobalVar.FileName;
        private int _percent = 0;


        private readonly string _updatePath =Application.StartupPath+"\\"+GlobalVar.FileName.Remove(GlobalVar.FileName.IndexOf(".zip"));
            //$"{Application.StartupPath}\\{GlobalVar.FileName.Remove(GlobalVar.FileName.IndexOf(".zip"))}";
        
        public FormAutoUpdate()
        {
            InitializeComponent();
            
            timer.Tick += TimerTick;
            if (File.Exists(_localZipFile))
            {
                try
                {
                    File.Delete(_localZipFile);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);

                }

            }
            if (Directory.Exists(_updatePath))
            {
                try
                {
                    Directory.Delete(_updatePath, true);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }

            //检查服务端是否有新版本程序
            GetUpdateFile();
            timer.Enabled = true;
        }


        private void GetUpdateFile()
        {

            try
            {

                var wc = new WebClient();
                //wc.DownloadFile(download, filename);
                wc.DownloadFileAsync(new Uri(_remoteZipFile), _localZipFile);
                wc.DownloadProgressChanged += wc_DownloadProgressChanged;
                wc.DownloadFileCompleted += wc_DownloadFileCompleted;
                wc.Dispose();

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void wc_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e)
        {
            //解压下载后的文件
            if (File.Exists(_localZipFile))
            {
                //后改的 先解压滤波zip植入ini然后再重新压缩
                if (!Directory.Exists(_updatePath))
                {
                    Directory.CreateDirectory(_updatePath);
                }

                //开始解压压缩包

                ZipFile.ExtractToDirectory(_localZipFile, _updatePath);

                /*
                using (ZipFile zip = ZipFile.Read(_localZipFile))
                {
                    zip.ExtractAll(_updatePath, ExtractExistingFileAction.OverwriteSilently);
                }
                */


                try
                {
                    //复制新文件替换旧文件
                    DirectoryInfo folder = new DirectoryInfo(_updatePath);
                    foreach (FileInfo file in folder.GetFiles())
                    {
                        if(file.Name.Contains("Ionic.Zip.dll"))continue;
                        if(file.Name.Contains("Updater"))continue;
                        File.Copy(file.FullName, Application.StartupPath+"\\"+file.Name, true);
                    }
                    var destPath = Application.StartupPath;
                    foreach (var dir in folder.GetDirectories())
                    {
                        var destDirName = destPath+"\\"+dir.Name;
                        var sourceDirName = dir.FullName;
                        CopyDirectory(sourceDirName,destDirName);
                    }
                    //Directory.Delete(_updatePath, true);
                    File.Delete(_localZipFile);
                    //覆盖完成 重新启动程序
                    System.Diagnostics.Process process = new System.Diagnostics.Process
                    {
                        StartInfo =
                        {
                            FileName = GlobalVar.SoftWareName,
                            WorkingDirectory = Application.StartupPath,
                            CreateNoWindow = true
                        }
                    };
                    //要掉用得exe路径例如:"C:\windows";               
                    process.Start();

                    Application.Exit();
                }
                catch (Exception ex)
                {
                    MessageBox.Show("请关闭系统后重新执行更新操作!"+Environment.NewLine +
                                    ex.Message);
                    Application.Exit();
                }

            }
        }


        private void CopyDirectory(string sourceDirName, string destDirName)
        {
            try
            {
                if (!Directory.Exists(destDirName))
                {
                    Directory.CreateDirectory(destDirName);
                    File.SetAttributes(destDirName, File.GetAttributes(sourceDirName));

                }

                if (destDirName[destDirName.Length - 1] != Path.DirectorySeparatorChar)
                    destDirName = destDirName + Path.DirectorySeparatorChar;

                string[] files = Directory.GetFiles(sourceDirName);
                foreach (string file in files)
                {
                    if (File.Exists(destDirName + Path.GetFileName(file)))
                        File.Delete(destDirName + Path.GetFileName(file));
                    File.Copy(file, destDirName + Path.GetFileName(file), true);
                    File.SetAttributes(destDirName + Path.GetFileName(file), FileAttributes.Normal);
//                    total++;
                }

                string[] dirs = Directory.GetDirectories(sourceDirName);
                foreach (string dir in dirs)
                {
                    CopyDirectory(dir, destDirName + Path.GetFileName(dir));
                }
            }
            catch (Exception ex)
            {
                StreamWriter sw = new StreamWriter(Application.StartupPath+"\\"+  "log.txt", true);
                sw.Write(ex.Message+    DateTime.Now+Environment.NewLine);
                sw.Close();
            }
        }

        private void wc_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
            _percent = e.ProgressPercentage;
            pbDownload.Value = e.ProgressPercentage;
        }

        private void TimerTick(object sender, EventArgs e)
        {
            lblPercent.Text = @"下载进度:"+_percent+"%";
            if (_percent == 100)
            {
                timer.Enabled = false;
            }
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

      

        private void FormAutoUpdate_Load(object sender, EventArgs e)
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("下载地址："+_remoteZipFile);
            sb.AppendLine("新程序版本："+GlobalVar.NewVersion);
            sb.AppendLine("更新说明：");
            sb.AppendLine(GlobalVar.Desc);
            txtDesc.Text = sb.ToString();
        }

    }
}