public override async Task <(ISource source, string failReason)> FindHandlerAsync(DiscordMessage message, ICollection <IArchiveHandler> handlers)
{
if (string.IsNullOrEmpty(message.Content))
{
return(null, null);
}
var matches = ExternalLink.Matches(message.Content);
if (matches.Count == 0)
{
return(null, null);
}
var client = new MegaApiClient();
await client.LoginAnonymousAsync();
foreach (Match m in matches)
{
try
{
if (m.Groups["mega_link"].Value is string lnk &&
!string.IsNullOrEmpty(lnk) &&
Uri.TryCreate(lnk, UriKind.Absolute, out var uri))
{
var node = await client.GetNodeFromLinkAsync(uri).ConfigureAwait(false);
if (node.Type == NodeType.File)
{
var buf = bufferPool.Rent(1024);
try
{
int read;
using (var stream = await client.DownloadAsync(uri, doodad, Config.Cts.Token).ConfigureAwait(false))
read = await stream.ReadBytesAsync(buf).ConfigureAwait(false);
foreach (var handler in handlers)
{
var(canHandle, reason) = handler.CanHandle(node.Name, (int)node.Size, buf.AsSpan(0, read));
if (canHandle)
{
return(new MegaSource(client, uri, node, handler), null);
}
else if (!string.IsNullOrEmpty(reason))
{
return(null, reason);
}
}
}
finally
{
bufferPool.Return(buf);
}
}
}
}
catch (Exception e)
{
Config.Log.Warn(e, $"Error sniffing {m.Groups["mega_link"].Value}");
}
}
return(null, null);
}
