fix: don't logout when connecting new login provider.

src/routes/(app)/[username]/components/ManageAccountModal.svelte

@@ -3,6 +3,7 @@
 	import type { UserInfo } from '$lib/rauthy';
 	import type { Provider } from '$lib/rauthy/client';
 	import getPkce from 'oauth-pkce';
+	import { checkResponse } from '$lib/utils/http';
 
 	const modalStore = getModalStore();
 
@@ -18,20 +19,6 @@
 		providers.find((x) => x.id == userInfo?.auth_provider_id)?.name
 	);
 
-	const getKey = (i: number) => {
-		let res = '';
-
-		const target = i || 8;
-		for (let i = 0; i < target; i += 1) {
-			let nextNumber = 60;
-			while ((nextNumber > 57 && nextNumber < 65) || (nextNumber > 90 && nextNumber < 97)) {
-				nextNumber = Math.floor(Math.random() * 74) + 48;
-			}
-			res = res.concat(String.fromCharCode(nextNumber));
-		}
-
-		return res;
-	};
 	async function providerLinkPkce(provider_id: string, pkce_challenge: string) {
 		const data = {
 			pkce_challenge,
@@ -40,25 +27,15 @@
 			email: userInfo?.email,
 			provider_id
 		};
-		await fetch(`/auth/v1/providers/${provider_id}/link`, {
+		const resp = await fetch(`/auth/v1/providers/${provider_id}/link`, {
 			method: 'POST',
 			headers: [['csrf-token', localStorage.getItem('csrfToken')!]],
 			body: JSON.stringify(data)
-		})
-			.then(() => {
-				getPkce(64, async (error, { challenge, verifier }) => {
-					if (!error) {
-						localStorage.setItem('pkce_verifier', verifier);
-						const nonce = getKey(24);
-						const s = 'account';
-						const redirect_uri = encodeURIComponent(
-							`${window.location.origin}/auth/v1/oidc/callback`
-						);
-						window.location.href = `/auth/v1/oidc/logout?post_logout_redirect_uri=%2Fauth%2Fv1%2Foidc%2Fauthorize%3Fclient_id%3Drauthy%26redirect_uri%3D${redirect_uri}%26response_type%3Dcode%26code_challenge%3D${challenge}%26code_challenge_method%3DS256%26scope%3Dopenid%2Bprofile%2Bemail%26nonce%3D${nonce}%26state%3D${s}`;
-					}
-				});
-			})
-			.catch((err) => console.log(err, 'a'));
+		});
+		await checkResponse(resp);
+		const csrfToken = await resp.text();
+		localStorage.setItem('csrfToken', csrfToken);
+		window.location.href = resp.headers.get('location')!;
 	}
 	async function linkAccount(providerId: string) {
 		getPkce(64, (error, { challenge, verifier }) => {