public static LocalFile GetFile(string url)
{
if (string.IsNullOrWhiteSpace(url))
{
return(null);
}
try
{
var file = SL.GetItems <LocalFile>(x => x.Url == url).FirstOrDefault();
if (string.IsNullOrWhiteSpace(file?.Path) || !Exists(file.Path))
{
Task.Run(async() =>
{
await DownloadFile(url);
});
return(null);
}
else
{
return(file);
}
}
catch (Exception ex)
{
SL.Report("Error GetFile()", ex);
return(null);
}
}
static async Task DownloadNext()
{
if (isDownloading || _downloadStack.Count == 0)
{
return;
}
isDownloading = true;
var url = _downloadStack[0];
try
{
var files = SL.GetItems <LocalFile>(x => x.Url == url);
foreach (var file in files)
{
try
{
if (Exists(file.Path))
{
DeleteFile(file.Path);
}
SL.DeleteItem(file);
}
catch (Exception) { }
}
var name = Guid.NewGuid().ToString();
var extension = Path.GetExtension(url);
var filename = name + extension;
var path = CachePath(filename);
var pp = PublicPath(filename);
await DownloadAsync(url, path);
var localFile = new LocalFile {
ID = name, Url = url, Path = path
};
var result = SL.SaveItem(localFile, true, true) != null;
_downloadStack.Remove(url);
isDownloading = false;
DownloadNext();
if (result)
{
SendChanged(new Object(), new FileChangedArgs(localFile));
}
return;
}
catch (Exception ex)
{
SL.Report("Error DownloadFile()", ex);
_downloadStack.Remove(url);
isDownloading = false;
DownloadNext();
return;
}
}