/// <summary>
/// Monitor the download status at a given frequency
/// </summary>
/// <param name="frequencySeconds">The frequency i9n seconds</param>
private void MonitorDownLoad(double frequencySeconds = 1.0)
{
this.UpdateState = InstallAbility.Downloading;
this.OnPropertyChanged("UpdateState");
if (this.tokenSource != null)
{
this.tokenSource.Cancel();
this.tokenSource.Dispose();
}
this.tokenSource = new CancellationTokenSource();
TimeSpan frequency = TimeSpan.FromSeconds(frequencySeconds);
var cancellationToken = this.tokenSource.Token;
Task.Run(
async() =>
{
while ((this.UpdateState = this.downloadAndInstallService.GetDownloadState()) == InstallAbility.Downloading)
{
await Task.Delay(frequency);
this.OnPropertyChanged("DownloadProgress");
}
this.OnPropertyChanged("UpdateState");
if (this.UpdateState == InstallAbility.ReadyToInstall)
{
var response = this.downloadAndInstallService.InstallUpdate();
this.InstallCompleted?.Invoke(this, response);
}
},
cancellationToken);
}
/// <summary>
/// Get the status of the download
/// </summary>
/// <returns>The download state</returns>
public InstallAbility GetDownloadState()
{
InstallAbility installAbility = InstallAbility.UpdateNotFound;
if (this.HasDownloadReference)
{
var query = new DownloadManager.Query();
query.SetFilterById(this.downloadReference);
var cursor = this.downloadManager.InvokeQuery(query);
if (cursor.MoveToFirst())
{
var status = (DownloadStatus)cursor.GetInt(cursor.GetColumnIndex(DownloadManager.ColumnStatus));
switch (status)
{
case DownloadStatus.Successful:
installAbility = InstallAbility.ReadyToInstall;
break;
case DownloadStatus.Paused:
case DownloadStatus.Pending:
case DownloadStatus.Running:
installAbility = InstallAbility.Downloading;
break;
case DownloadStatus.Failed:
var reasonCode = (DownloadError)cursor.GetInt(cursor.GetColumnIndex(DownloadManager.ColumnReason));
if (reasonCode == DownloadError.InsufficientSpace || reasonCode == DownloadError.FileError || reasonCode == DownloadError.DeviceNotFound)
{
installAbility = InstallAbility.UnableToStoreOnDevice;
}
else if (reasonCode == DownloadError.FileAlreadyExists)
{
installAbility = InstallAbility.ReadyToInstall;
}
else if ((int)reasonCode == 404)
{
installAbility = InstallAbility.UpdateNotFound;
}
else
{
installAbility = InstallAbility.DownloadFailed;
}
break;
}
}
}
return(installAbility);
}
