public async Task Invoke(string[] args, CommandMessage message)
{
if (this.Permission > CommandsService.GetPermissions(message.Author))
{
throw new UserException("I'm sorry, you don't have permission to do that.");
}
object?owner;
if (!this.Owner.TryGetTarget(out owner) || owner == null)
{
throw new Exception("Attempt to invoke command on null owner.");
}
List <object> parameters = new List <object>();
ParameterInfo[] allParamInfos = this.Method.GetParameters();
int argCount = 0;
int neededArgCount = allParamInfos.Length;
for (int i = 0; i < allParamInfos.Length; i++)
{
ParameterInfo paramInfo = allParamInfos[i];
if (paramInfo.ParameterType == typeof(CommandMessage))
{
parameters.Add(message);
neededArgCount--;
continue;
}
else if (paramInfo.ParameterType == typeof(string[]))
{
parameters.Add(args);
neededArgCount--;
}
else if (paramInfo.ParameterType == typeof(Attachment) && message.Message.Attachments.Count == 1)
{
parameters.Add(message.Message.Attachments.FirstOrDefault());
neededArgCount--;
}
else
{
if (argCount >= args.Length)
{
parameters.Add("Empty");
continue;
}
string arg;
if (neededArgCount == 1 && paramInfo.ParameterType == typeof(string))
{
arg = string.Join(" ", args);
argCount += args.Length;
}
else
{
arg = args[argCount];
argCount++;
}
object param;
try
{
param = await this.Convert(message, arg, paramInfo.ParameterType, this.RequiresQuotes);
}
catch (UserException ex)
{
throw ex;
}
catch (Exception)
{
string hint = string.Empty;
if (paramInfo.ParameterType == typeof(string))
{
hint = "\n(Strings must have \"quotes\" around them)";
}
throw new ParameterException("I didn't understand the parameter: " + arg + ".\nWas that was supposed to be a " + HelpService.GetTypeName(paramInfo.ParameterType) + " for " + HelpService.GetParam(paramInfo, this.RequiresQuotes) + "?" + hint);
}
parameters.Add(param);
}
}
if (parameters.Count != allParamInfos.Length || argCount != args.Length || neededArgCount > args.Length)
{
throw new ParameterException("Incorrect number of parameters. I was expecting " + neededArgCount + ", but you sent me " + args.Length + "!");
}
try
{
await this.Invoke(message, owner, parameters.ToArray());
}
catch (UserException ex)
{
await message.Channel.SendMessageAsync(ex.Message);
}
}
