public static async Task <bool> PromptYesNo(this Context ctx, DiscordMessage message, DiscordUser user = null, Duration?timeout = null)
{
var cts = new CancellationTokenSource();
if (user == null)
{
user = ctx.Author;
}
if (timeout == null)
{
timeout = Duration.FromMinutes(5);
}
// "Fork" the task adding the reactions off so we don't have to wait for them to be finished to start listening for presses
var _ = message.CreateReactionsBulk(new[] { Emojis.Success, Emojis.Error });
bool ReactionPredicate(MessageReactionAddEventArgs e)
{
if (e.Channel.Id != message.ChannelId || e.Message.Id != message.Id)
{
return(false);
}
if (e.User.Id != user.Id)
{
return(false);
}
return(true);
}
bool MessagePredicate(MessageCreateEventArgs e)
{
if (e.Channel.Id != message.ChannelId)
{
return(false);
}
if (e.Author.Id != user.Id)
{
return(false);
}
var strings = new [] { "y", "yes", "n", "no" };
foreach (var str in strings)
{
if (e.Message.Content.Equals(str, StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
}
return(false);
}
var messageTask = ctx.Services.Resolve <HandlerQueue <MessageCreateEventArgs> >().WaitFor(MessagePredicate, timeout, cts.Token);
var reactionTask = ctx.Services.Resolve <HandlerQueue <MessageReactionAddEventArgs> >().WaitFor(ReactionPredicate, timeout, cts.Token);
var theTask = await Task.WhenAny(messageTask, reactionTask);
cts.Cancel();
if (theTask == messageTask)
{
var responseMsg = (await messageTask).Message;
var positives = new[] { "y", "yes" };
foreach (var p in positives)
{
if (responseMsg.Content.Equals(p, StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
}
return(false);
}
if (theTask == reactionTask)
{
return((await reactionTask).Emoji.Name == Emojis.Success);
}
return(false);
}
