public override Task <PreconditionResult> CheckPermissions(ICommandContext context, CommandInfo command, IServiceProvider serviceProvider)
{
return(Task.Run(() =>
{
_serviceProvider = serviceProvider;
_rateLimitService = _serviceProvider.GetService <RateLimitService>();
_statistics = _serviceProvider.GetService <Statistics>();
if (_rateLimitService.TryGet(context.User.Id))
{
return Task.FromResult(PreconditionResult.FromError(string.Empty));
}
else
{
_rateLimitService.TryAdd(context.User.Id, new RateLimit(Config.UserRateLimit));
_statistics.CommandUsage.AddOrUpdate(command.Name, 0, (key, value) => value + 1);
}
if (_rateLimitService.TryGet(context.Channel.Id, out var pair))
{
if (pair.Item1.Uses >= Config.MaxChannelRateLimitUses)
{
return Task.FromResult(PreconditionResult.FromError(string.Empty));
}
else
{
_rateLimitService.Update(context.Channel.Id, (k, v) =>
{
v.Item1.Uses++;
return v;
});
}
}
else
{
_rateLimitService.TryAdd(context.Channel.Id, new RateLimit(Config.ChannelRateLimit));
}
(context as Context).Command = command;
return Task.FromResult(PreconditionResult.FromSuccess());
}));
}