private async Task<string> DownloadLatestPatcher()
{
Label = DownloadingLabel;
try
{
if (CancelEvent.WaitOne(0))
return null;
Downloader downloader = new Downloader(CancelEvent);
downloader.DownloadProgress += OnDownloadProgress;
HttpFileInfo latest = await GetLatestPatcherUrl(downloader);
if (latest == null)
throw new Exception("Не удалось найти свежую версию программы установки. Проверьте файл конфигурации.");
Maximum = latest.ContentLength;
string filePath = Path.GetTempFileName();
await downloader.Download(latest.Url, filePath);
return filePath;
}
finally
{
Label = InstallLabel;
}
}
protected override async Task DoAction()
{
Label = DownloadingLabel;
try
{
if (CancelEvent.WaitOne(0))
{
return;
}
Downloader downloader = new Downloader(CancelEvent);
downloader.DownloadProgress += OnDownloadProgress;
HttpFileInfo fileInfo = _latestTranslationInfo.Value;
Maximum = fileInfo.ContentLength;
await downloader.Download(fileInfo.Url, PatcherService.ArchiveFileName);
if (fileInfo.LastModified != null)
{
File.SetLastWriteTime(PatcherService.ArchiveFileName, fileInfo.LastModified.Value);
}
SubLabel = null;
}
finally
{
Label = DownloadLabel;
}
}
private HttpFileInfo GetLatestTranslationInfo()
{
Downloader downloader = new Downloader(CancelEvent);
LocalizatorEnvironmentInfo info = InteractionService.LocalizatorEnvironment.Provide();
HttpFileInfo latest = null;
foreach (string url in info.TranslationUrls)
{
try
{
HttpFileInfo fileInfo = downloader.GetRemoteFileInfo(url).ContinueWith(t => t.Result).Result;
if (latest == null || latest.LastModified < fileInfo.LastModified)
{
latest = fileInfo;
}
}
catch (Exception ex)
{
Log.Warning(ex, "Не удалось получить информацию о файле: [{0}]", url);
}
}
return(latest);
}
private void GetLatest()
{
try
{
HttpFileInfo value = _latestTranslationInfo.Value;
Dispatcher.Invoke(() =>
{
if (value == null)
{
IsEnabled = false;
SubLabel = "Сервер недоступен";
return;
}
string server = value.Url;
int index = server.IndexOf("//");
if (index > -1)
{
server = server.Substring(index + 2);
}
index = server.IndexOf('/');
if (index > -1)
{
server = server.Substring(0, index);
}
StringBuilder sb = new StringBuilder(128);
sb.Append(server);
sb.Append(" (");
sb.Append(UiHelper.FormatBytes(value.ContentLength));
if (value.LastModified != null)
{
sb.Append(", ");
sb.Append(value.LastModified);
}
sb.Append(')');
SubLabel = sb.ToString();
if (!File.Exists(PatcherService.ArchiveFileName) || File.GetLastWriteTime(PatcherService.ArchiveFileName) < value.LastModified)
{
SubLabelColor = Brushes.LightGreen;
}
});
}
catch (Exception ex)
{
Log.Error(ex);
}
}
public async Task<HttpFileInfo> GetRemoteFileInfo(string url)
{
HttpFileInfo result = new HttpFileInfo();
if (_cancelEvent.WaitOne(0))
return result;
WebRequest request = WebRequest.Create(url);
request.Method = "HEAD";
using (WebResponse resp = await request.GetResponseAsync())
{
if (_cancelEvent.WaitOne(0))
return result;
result.ReadFromResponse(url, resp);
return result;
}
}
private async Task<HttpFileInfo> GetLatestPatcherUrl(Downloader downloader)
{
LocalizatorEnvironmentInfo info = InteractionService.LocalizatorEnvironment.Provide();
HttpFileInfo latest = null;
foreach (string url in info.PatherUrls)
{
try
{
HttpFileInfo fileInfo = await downloader.GetRemoteFileInfo(url);
if (latest == null || latest.LastModified < fileInfo.LastModified)
latest = fileInfo;
}
catch (Exception ex)
{
Log.Warning(ex, "Не удалось получить информацию о файле: [{0}]", url);
}
}
return latest;
}
public async Task <HttpFileInfo> GetRemoteFileInfo(string url)
{
HttpFileInfo result = new HttpFileInfo();
if (_cancelEvent.WaitOne(0))
{
return(result);
}
WebRequest request = WebRequest.Create(url);
request.Method = "HEAD";
using (WebResponse resp = await request.GetResponseAsync())
{
if (_cancelEvent.WaitOne(0))
{
return(result);
}
result.ReadFromResponse(url, resp);
return(result);
}
}
