public async Task Mute(IGuildUser user, [Remainder] string reason = null)
{
var mutedRole = await _moderationService.FetchMutedRole(Context.Guild);
if (user.RoleIds.Contains(mutedRole.Id))
{
await Context.ReplyAsync("This user is already muted.");
}
else
{
await user.AddRoleAsync(mutedRole);
await Context.ReplyAsync("You have successfully muted " + user.Tag() + ".");
}
}