internal async ValueTask <bool> ProcessCommandsAsync(IGatewayUserMessage message, CachedMessageGuildChannel channel)
{
// We check if the message is suitable for execution.
// By default excludes bot messages.
try
{
if (!await CheckMessageAsync(message).ConfigureAwait(false))
{
return(false);
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while executing the check message callback.");
return(false);
}
// We get the prefixes from the prefix provider.
IEnumerable <IPrefix> prefixes;
try
{
prefixes = await Prefixes.GetPrefixesAsync(message).ConfigureAwait(false);
if (prefixes == null)
{
return(false);
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while getting the prefixes.");
return(false);
}
// We try to find a prefix in the message.
IPrefix foundPrefix = null;
string output = null;
try
{
foreach (var prefix in prefixes)
{
if (prefix == null)
{
continue;
}
if (prefix.TryFind(message, out output))
{
foundPrefix = prefix;
break;
}
}
if (foundPrefix == null)
{
return(false);
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while finding the prefixes in the message.");
return(false);
}
// We create a command context for Qmmands.
DiscordCommandContext context;
try
{
context = CreateCommandContext(foundPrefix, output, message, channel);
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while creating the command context.");
return(false);
}
// We check the before execution callback, by default returns true.
try
{
if (!await BeforeExecutedAsync(context).ConfigureAwait(false))
{
return(false);
}
}
catch (Exception ex)
{
await DisposeContextAsync(context).ConfigureAwait(false);
Logger.LogError(ex, "An exception occurred while executing the before executed callback.");
return(false);
}
// We post the execution to the command queue.
// See the Post() method in the default queue for more information.
try
{
Queue.Post(context, context => context.Bot.ExecuteAsync(context));
return(true);
}
catch (Exception ex)
{
await DisposeContextAsync(context).ConfigureAwait(false);
Logger.LogError(ex, "An exception occurred while posting the execution to the command queue.");
return(false);
}
}
private async ValueTask MessageReceivedAsync(object sender, MessageReceivedEventArgs e)
{
await Task.Yield();
if (e.Message is not IGatewayUserMessage message)
{
return;
}
try
{
if (!await CheckMessageAsync(message).ConfigureAwait(false))
{
return;
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while executing the check message callback.");
return;
}
IEnumerable <IPrefix> prefixes;
try
{
prefixes = await Prefixes.GetPrefixesAsync(message).ConfigureAwait(false);
if (prefixes == null)
{
return;
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while getting the prefixes.");
return;
}
IPrefix foundPrefix = null;
string output = null;
try
{
foreach (var prefix in prefixes)
{
if (prefix == null)
{
continue;
}
if (prefix.TryFind(message, out output))
{
foundPrefix = prefix;
break;
}
}
if (foundPrefix == null)
{
return;
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while finding the prefixes in the message.");
return;
}
DiscordCommandContext context;
try
{
context = CreateCommandContext(foundPrefix, message, e.Channel);
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while creating the command context.");
return;
}
try
{
if (!await BeforeExecutedAsync(context).ConfigureAwait(false))
{
return;
}
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while executing the before executed callback.");
return;
}
try
{
Queue.Post(output, context, static (input, context) => context.Bot.ExecuteAsync(input, context));
