Recover the old voice state in VoiceStateUpdateEvent

[EnoPM]

Hello,
I must have missed something but I couldn't find a way to retrieve the old voice state in a VoiceStateUpdate handler. The event returns the new state but the cache is already updated when it is called
Thank you in advance for your help.

[samhza]

I believe PreHandler is what you're looking for. It's executed before the cache is updated, so you'll be able to get the old voice state. The undeleter example shows how it can be used.

[EnoPM]

Thanks that sounds like what I need. However *State.PreHandler is nil by default. I have to change something in the configuration?

[samhza]

Use handler.New() to create a new handler.

[EnoPM]

If someone has the same question, you should know that to be sure that the cache contains the old state, the handler must be synchronous.

[diamondburned]

There's a good example of this in undeleter.