#region The delegate public delegate void ShowHandler(); #endregion public class AutoUpdater : IAutoUpdater { #region The private fields private Config config = null; private bool bNeedRestart = false; private bool bDownload = false; List<DownloadFileInfo> downloadFileListTemp = null; #endregion #region The public event public event ShowHandler OnShow; #endregion #region The constructor of AutoUpdater public AutoUpdater() { config = Config.LoadConfig(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ConstFile.FILENAME)); } #endregion #region The public method public void Update() { if (!config.Enabled) return; Dictionary<string, RemoteFile> listRemotFile = ParseRemoteXml(config.ServerUrl); List<DownloadFileInfo> downloadList = new List<DownloadFileInfo>(); foreach (LocalFile file in config.UpdateFileList) { if (listRemotFile.ContainsKey(file.Path)) { RemoteFile rf = listRemotFile[file.Path]; Version v1 = new Version(rf.LastVer); Version v2 = new Version(file.LastVer); if (v1 > v2) { downloadList.Add(new DownloadFileInfo(rf.Url, file.Path, rf.LastVer, rf.Size)); file.LastVer = rf.LastVer; file.Size = rf.Size; if (rf.NeedRestart) bNeedRestart = true; bDownload = true; } listRemotFile.Remove(file.Path); } } foreach (RemoteFile file in listRemotFile.Values) { downloadList.Add(new DownloadFileInfo(file.Url, file.Path, file.LastVer, file.Size)); if (file.NeedRestart) bNeedRestart = true; } downloadFileListTemp = downloadList; if (bDownload) { DownloadConfirm dc = new DownloadConfirm(downloadList); if (this.OnShow != null) this.OnShow(); if (DialogResult.OK == dc.ShowDialog()) { StartDownload(downloadList); } } } public void RollBack() { foreach (DownloadFileInfo file in downloadFileListTemp) { string tempUrlPath = CommonUnitity.GetFolderUrl(file); string oldPath = string.Empty; try { if (!string.IsNullOrEmpty(tempUrlPath)) { oldPath = Path.Combine(CommonUnitity.SystemBinUrl tempUrlPath.Substring(1), file.FileName); } else { oldPath = Path.Combine(CommonUnitity.SystemBinUrl, file.FileName); } if (oldPath.EndsWith("_")) oldPath = oldPath.Substring(0, oldPath.Length - 1); MoveFolderToOld(oldPath ".old", oldPath); } catch (Exception ex) { //log the error message,you can use the application's log code } } } #endregion #region The private method string newfilepath = string.Empty; private void MoveFolderToOld(string oldPath, string newPath) { if (File.Exists(oldPath) && File.Exists(newPath)) { System.IO.File.Copy(oldPath, newPath, true); } } private void StartDownload(List<DownloadFileInfo> downloadList) { DownloadProgress dp = new DownloadProgress(downloadList); if (dp.ShowDialog() == DialogResult.OK) { // if (DialogResult.Cancel == dp.ShowDialog()) { return; } //Update successfully config.SaveConfig(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ConstFile.FILENAME)); if (bNeedRestart) { //Delete the temp folder Directory.Delete(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ConstFile.TEMPFOLDERNAME), true); MessageBox.Show(ConstFile.APPLYTHEUPDATE, ConstFile.MESSAGETITLE, MessageBoxButtons.OK, MessageBoxIcon.Information); CommonUnitity.RestartApplication(); } } } private Dictionary<string, RemoteFile> ParseRemoteXml(string xml) { XmlDocument document = new XmlDocument(); document.Load(xml); Dictionary<string, RemoteFile> list = new Dictionary<string, RemoteFile>(); foreach (XmlNode node in document.DocumentElement.ChildNodes) { list.Add(node.Attributes["path"].Value, new RemoteFile(node)); } return list; } #endregion }
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