Webhook event structure in GoTrue to fire off when user is created

[spencerbart]

Idea

In Stripe you can setup a webhook URL where Stripe sends a message to that URL when any event happens.

Problem

There's not a lot of programmatic things you can do after a user is created (especially using providers). Using Postgres triggers are okay but aren't as flexible as they need to be.

Solution

It would be cool if we could pass in a webhook URL to GoTrue and GoTrue would fire off an event when a user is created.

[spencerbart]

This could be used to send intro emails, create necessary data in the database for them, send an alert to our own internal team, etc.

[spencerbart]

https://supabase.com/docs/guides/auth/managing-user-data#using-triggers

You can't do a lot of those things with Postgres triggers and if our team is using migrations to manage changes via SQL then it becomes extremely cumbersome to make quick changes or add features.

[spencerbart]

There could be a tab in the user configuration called webhook where all you have to do is pass in the endpoint you want GoTrue to hit.

[spencerbart]

Potential Event Types

UserCreated is the most obvious. There might be other event types such as when a user clicks on a confirmation URL when they are confirming signup or any of the other events specified in the Email Templates tab under the Authentication tab.