public async Task HandleAsync(DiscordInteraction interaction)
{
if (interaction.Guild is null)
{
throw new Exception("User tried to execute a command in DMs, somehow.");
}
var request = CommandRequest.FromInteractionData(interaction.Data);
if (!_commands.ContainsKey(request.FullName))
{
throw new Exception($"An interaction was created, but no command was registered for it: '{request.FullName}'");
}
var command = _commands[request.FullName];
using var scope = _provider.CreateScope();
if (ActivatorUtilities.CreateInstance(scope.ServiceProvider, command.Class) is not ICommand instance)
{
throw new Exception($"Could not create an instance of a type {command.Class} for a command '{request.FullName}'.");
}
var context = new CommandContext(_client, interaction, instance.Ephemeral);
await AcknowledgeInteraction(interaction, instance.Ephemeral);
CommandResult result;
try
{
if (request.Parameters is not null)
{
command.FillParameters(instance, request.Parameters, interaction.Data.Resolved);
}
var checkResult = await command.RunChecksAsync(context, _provider);
if (!checkResult.IsSuccessful)
{
await context.RespondWithAccessDeniedAsync(checkResult.Reason);
return;
}
result = await instance.HandleAsync(context);
}
catch (Exception e)
{
await context.RespondWithCriticalErrorAsync(e);
throw;
}
if (instance.Ephemeral)
{
await RespondWithMessageAsync(context, result);
}
else
{
await RespondWithEmbedAsync(context, result);
}
}