private void TriggerDownload(string url, Guid modID)
{
ImageCacheEntry e;
lock (_entryLock)
{
if (!_entries.TryGetValue(url, out e))
{
e = new ImageCacheEntry();
e.Url = url;
_entries[url] = e;
}
}
e.Updated = DateTime.Now;
string file = e.File;
if (string.IsNullOrWhiteSpace(file))
{
file = GetCacheFileName(url);
}
string pathToTempDownload = Path.Combine(_folder, file + ".tmp");
DownloadItem download = new DownloadItem()
{
Links = new List <string> {
LocationUtil.FormatHttpUrl(url)
},
SaveFilePath = pathToTempDownload,
ItemName = "Downloading preview image",
Category = DownloadCategory.Image
};
download.IProc = new Install.InstallProcedureCallback(ae =>
{
if (ae.Error == null)
{
lock (_entryLock)
{
e.File = file;
}
try
{
try
{
// delete existing cache file and rename .tmp file to match cache file name
string f = Path.Combine(_folder, file);
if (File.Exists(f))
{
File.Delete(f);
}
File.Move(pathToTempDownload, f);
}
catch (IOException)
{
// this happens while the file is in-use. the file will be renamed and image cache entry updated to point to new file instead
file = GetCacheFileName(url);
File.Move(pathToTempDownload, file);
e.File = file;
}
Sys.PingInfoChange(modID);
}
catch (Exception ex)
{
Sys.Message(new WMessage("failed to get preview image", WMessageLogLevel.Error, ex));
}
}
else
{
Sys.Message(new WMessage("ImageCache Download error: " + ae.Error.ToString(), WMessageLogLevel.LogOnly, ae.Error));
}
});
Sys.Downloads.AddToDownloadQueue(download);
}
public void Download(IEnumerable <string> links, string file, string description, Install.InstallProcedure iproc, Action onCancel)
{
string link = links.First();
LocationType type; string location;
if (!LocationUtil.Parse(link, out type, out location))
{
return;
}
if (!this.Visible)
{
this.Show();
}
this.BringToFront();
if (links.Count() > 1)
{
onCancel = () => {
Log.Write(String.Format("Downloading {0} - switching to backup url {1}", file, links.ElementAt(1)));
Download(links.Skip(1), file, description, iproc, onCancel);
};
}
var lvi = lvDownloads.Items.Add(description);
lvi.Tag = new DownloadItem()
{
IProc = iproc, LVI = lvi, OnCancel = onCancel
};
lvi.SubItems.Add("DummyProgress");
lvi.SubItems.Add("Calculating...");
switch (type)
{
case LocationType.Url:
var wc = new System.Net.WebClient();
(lvi.Tag as DownloadItem).PerformCancel = wc.CancelAsync;
wc.DownloadProgressChanged += new System.Net.DownloadProgressChangedEventHandler(_wc_DownloadProgressChanged);
wc.DownloadFileCompleted += new AsyncCompletedEventHandler(_wc_DownloadFileCompleted);
wc.DownloadFileAsync(new Uri(location), file, lvi.Tag);
break;
case LocationType.GDrive:
var gd = new GDrive();
(lvi.Tag as DownloadItem).PerformCancel = gd.CancelAsync;
gd.DownloadProgressChanged += new System.Net.DownloadProgressChangedEventHandler(_wc_DownloadProgressChanged);
gd.DownloadFileCompleted += new AsyncCompletedEventHandler(_wc_DownloadFileCompleted);
gd.Download(location, file, lvi.Tag);
break;
case LocationType.MegaSharedFolder:
string[] parts = location.Split(',');
Iros.Mega.MegaIros mega;
if (!_megaFolders.TryGetValue(parts[0], out mega) || mega.Dead)
{
_megaFolders[parts[0]] = mega = new Mega.MegaIros(parts[0], String.Empty);
}
DownloadItem item = (DownloadItem)lvi.Tag;
Mega.MegaIros.Transfer tfr = null;
tfr = mega.Download(parts[1], parts[2], file, () => {
this.Invoke((Delegate)(Action)(() => {
switch (tfr.State)
{
case Mega.MegaIros.TransferState.Complete:
ProcessDownloadComplete(item, new AsyncCompletedEventArgs(null, false, item));
break;
case Mega.MegaIros.TransferState.Failed:
lvDownloads.Items.Remove(lvi);
Sys.Message(new WMessage()
{
Text = "Error downloading " + lvi.Text
});
if (onCancel != null)
{
onCancel();
}
break;
case Mega.MegaIros.TransferState.Canceled:
lvDownloads.Items.Remove(lvi);
Sys.Message(new WMessage()
{
Text = String.Format("{0} was canceled", lvi.Text)
});
break;
default:
DoDownloadProgress(item, (int)(100 * tfr.Complete / tfr.Size), tfr.Complete);
break;
}
}));
});
mega.ConfirmStartTransfer();
(lvi.Tag as DownloadItem).PerformCancel = () => mega.CancelDownload(tfr);
break;
}
}