feature request: Telegram Connector

[jay-dee7]

What problem did you meet?

Telegram is definitely one of the most popular chatting platform. While going through the connectors list, I realised there's none for Telegram.
I even went on to try and build a custom Connector for Telegram but I'm not able to wrap my head around how to do it. I went through the docs but no luck so far.

Describe what you'd like Logto to have

Would it be possible to add Telegram as a connector? I've seen other projects to simply ignore it based on complexity of the how Telegram does OAuth (which is totally a pain-point).
For eg: nextauthjs/next-auth#2406

Can support for Telegram be added? I'd be happy to contribute but I need some help since I can't quite get the flow right

Telegram success API returns the following response in query params:

id=<number, userid>
first_name=<string>
username=<telegram username>
photo_url=<profile_pic_url, string>
auth_date=<unix timestamp>
hash=<hash of the data, useful for checksum validation>

They do not return an auth token (at least I'm not aware of it). All you can do is an integrity check on the response you receive (something like a checksum validation). I can go a bit more in detail if someone's up for the task or maybe help me with it?

[wweevv-johndpope]

I was stuck with sign in via apple native + supabase using swift and apple's official demo code for apple sign in -
long story short - it's possible to setup a half way house - self hosted code to interact directly to postgres database / bypassing javascript sdk - I'd prefer and beseech supabase to push this upstream (to gotrue) but you could follow this pattern to validate credential - then basically create a user - I still need help to get a valid jwt.

here's nodejs code

https://github.com/johndpope/Sign-in-with-Apple-for-supabase/blob/master/server.js

related
supabase-community/gotrue-swift#4

UPDATE
this maybe a better fit for user creation rather than bypassing using postgres
https://next-auth.js.org/adapters/supabase

[gao-sun]

sorry we missed this. telegram connector is great to have. did you entering the Discord server? since we have some users discussing Telegram connector there

[gao-sun]

@wweevv-johndpope did you post accidentally? didn't see the comment is related to Logto.

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