private async Task <CommandRegistrationFindResult> FindCommandRegistrationAsync(SocketUserMessage userMessage)
{
var prefix = _defaultCommandPrefix;
if (userMessage.Channel is ITextChannel guildChannel)
{
var guildConfig = await _guildConfigProvider.GetConfigAsync(guildChannel.GuildId);
if (!string.IsNullOrEmpty(guildConfig?.CustomCommandPrefix))
{
prefix = guildConfig.CustomCommandPrefix;
}
}
// Check prefix
if (!userMessage.Content.StartsWith(prefix))
{
return(null);
}
// Check if the message contains a command invoker
var invoker = _commandParser.ParseInvoker(userMessage.Content, prefix);
if (string.IsNullOrEmpty(invoker))
{
return(null);
}
lock (_commandsMappingLock)
{
// Try to find command registrations for this invoker
List <CommandInfo> commandRegistrations;
if (!_commandsMapping.TryGetValue(invoker.ToLowerInvariant(), out commandRegistrations))
{
return(null);
}
var match = _commandParser.Match(userMessage.Content, prefix, commandRegistrations);
if (match == null)
{
return(null);
}
var(registration, usage) = match.Value;
return(new CommandRegistrationFindResult(prefix, registration, usage));
}
}