Differentiate gateway sticker events

[VelvetToroyashi]

Description

Right now, when a guild sticker gets added/removed/update, they all simply fire GUILD_STICKER_UPDATED, which, for hopefully obvious reasons is a bit of a pain in the side.

Why This is Needed
From a library dev/maintainer pov, there's two options that can be deduced when it comes to handling updates to stickers (and by extensions emojis, it seems)

Either:

• Go through every entity in the gateway event to check what changed, and determine if it's a creation, deletion, or modification
• Simply flush cache (if applicable) and throw the updated entities in there and hope for the best

Alternatives Considered

Going through a cached lookup, compare each sticker (or sticker count), and handle the appropriated event, but this is a bit cumbersome.

[apacheli]

I'm not against the idea of having more GUILD_STICKER_* events, but I have a feeling this to be consistent with guild emoji events (although UPDATED should be UPDATE I suppose). I'd prefer if this behavior was the same for emojis too.

[VelvetToroyashi]

As do I; this issue goes towards emojis as well, didn't realize that they had the same behavior until I looked at what our library does.

[VelvetToroyashi]

Which is the "dump cache and throw it to the user to handle" approach

[elderlabs]

I'd like to add here that stickers should be handled in a manner more like emojis in more ways than one. I've found that if we're looking to track stickers at all, we have limited access to sticker info, like which guild a sticker's originating from. Ideally, a list of stickers would be provided at GuildCreate event, as is provided with emojis. This would then allow us to track/limit stickers in a guild to allow only stickers uploaded to the guild, rather than limiting both external emojis and stickers altogether with Discord's built-in permissions, as some find stickers to be quite spammy.

At the moment, what information is provided regarding stickers is flawed. There is no reason to have a GUILD_STICKERS_UPDATE event if there's no list of stickers to track from GuildCreate events. I'm assuming this is an oversight and plan to report it as such.

[advaith1]

the guild object (including in Guild Create) already has a stickers field with an array of stickers

[elderlabs]

That's interesting. I didn't see anything about it in the docs, so I'd assumed it had been left out for whatever reason. I'll look again and do some testing on my end. Thanks advaith.

[advaith1]

its in the guild sticker pr #3128

[advaith1]

(re deleted comment) that's on messages, not on guilds

[elderlabs]

I did notice there's a sticker_items list, but without the now mentioned stickers object on the guild itself, it seemed weird, given stickers aren't documented in the guild object yet. I've yet to test this on my end, but that's where my confusion was initially.