How can I find out which auth provider was used for signing in?

[Le0X8]

I would like to know how I can find out which auth provider has been used after logging in with it, is that possible?

I'm looking for something like $page.data.session?.platform

My code:

src/lib/auth.ts

import { SvelteKitAuth as sva } from '@auth/sveltekit';
import github from '@auth/sveltekit/providers/github';
import type { Provider } from '@auth/sveltekit/providers';
import { GITHUB_ID, GITHUB_SECRET } from '$env/static/private';

const providers: Provider[] = [
	github({
		clientId: GITHUB_ID,
		clientSecret: GITHUB_SECRET
	})
];

export const providerMap = providers.map((provider) => {
	if (typeof provider === 'function') {
		const providerData = provider();
		return { id: providerData.id, name: providerData.name };
	} else {
		return { id: provider.id, name: provider.name };
	}
});

export const { signIn, signOut, handle } = sva(async () => {
	return {
		providers,
		pages: {
			signIn: '/login'
		},
		trustHost: true
	};
});

src/hooks.server.ts

export { handle } from './lib/auth';

src/routes/layout.server.ts

import type { LayoutServerLoad } from './$types';

export const load: LayoutServerLoad = async (event) => {
	const session = await event.locals.auth();

	return {
		session
	};
};

[Le0X8]

I mean I could detect if it was GitHub by checking if the user image URL starts with https://avatars.githubusercontent.com/, but I don't think that this is very helpful for all other platforms.

[k-taro56]

https://authjs.dev/reference/sveltekit#provider

[Le0X8]

I cannot figure out how I should access the Account, could you help me? I already searched for it in the docs.

[k-taro56]

export const { signIn, signOut, handle } = sva(async () => {
	return {
		events: {
			async signIn({ account }) {
				console.log(account?.provider)
			}
		},
		callbacks: {
			async signIn({ account }) {
				console.log(account?.provider)
				return true
			},
			async jwt({ account, token }) {
				console.log(account?.provider)
				// Add provider to token
				// token.provider = account?.provider
				return token
			}
		},
		providers,
		pages: {
			signIn: '/login'
		},
		trustHost: true
	};
});

[Le0X8]

That doesn't work for me for some reason, account is somehow always undefined, even though I'm logged in with GitHub.

[k-taro56]

Yes, this behavior is correct.
The only time the account is not undefined is when you log in.

See also:
https://authjs.dev/reference/core#parameters

Note
available when trigger is "signIn" or "signUp"

[Le0X8]

Oh. My bad, thank you very much.