feat: device authorization endpoint (#270)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

frontend/src/routes/authorize/+page.svelte

@@ -14,7 +14,7 @@
 	import { slide } from 'svelte/transition';
 	import type { PageData } from './$types';
 	import ClientProviderImages from './components/client-provider-images.svelte';
-	import ScopeItem from './components/scope-item.svelte';
+	import ScopeItem from '$lib/components/scope-item.svelte';
 
 	const webauthnService = new WebAuthnService();
 	const oidService = new OidcService();

frontend/src/routes/authorize/components/scope-item.svelte

@@ -1,13 +0,0 @@
-<script lang="ts">
-	export let icon: ConstructorOfATypedSvelteComponent;
-	export let name: string;
-	export let description: string;
-</script>
-
-<div class="flex items-center">
-	<div class="mr-5 rounded-lg bg-muted p-2"><svelte:component this={icon} /></div>
-	<div class="text-start">
-		<h3 class="font-semibold">{name}</h3>
-		<p class="text-sm text-muted-foreground">{description}</p>
-	</div>
-</div>

frontend/src/routes/device/+page.server.ts

@@ -0,0 +1,9 @@
+import type { PageServerLoad } from './$types';
+
+export const load: PageServerLoad = async ({ url }) => {
+	const code = url.searchParams.get('code');
+
+	return {
+		code
+	};
+};

frontend/src/routes/device/+page.svelte

@@ -0,0 +1,124 @@
+<script lang="ts">
+	import SignInWrapper from '$lib/components/login-wrapper.svelte';
+	import ScopeList from '$lib/components/scope-list.svelte';
+	import { Button } from '$lib/components/ui/button';
+	import * as Card from '$lib/components/ui/card';
+	import { Input } from '$lib/components/ui/input';
+	import { m } from '$lib/paraglide/messages';
+	import OIDCService from '$lib/services/oidc-service';
+	import WebAuthnService from '$lib/services/webauthn-service';
+	import appConfigStore from '$lib/stores/application-configuration-store';
+	import userStore from '$lib/stores/user-store';
+	import type { OidcDeviceCodeInfo } from '$lib/types/oidc.type';
+	import { getAxiosErrorMessage } from '$lib/utils/error-util';
+	import { startAuthentication } from '@simplewebauthn/browser';
+	import { onMount } from 'svelte';
+	import { slide } from 'svelte/transition';
+	import ClientProviderImages from '../authorize/components/client-provider-images.svelte';
+	import LoginLogoErrorSuccessIndicator from '../login/components/login-logo-error-success-indicator.svelte';
+
+	let { data } = $props();
+
+	const oidcService = new OIDCService();
+	const webauthnService = new WebAuthnService();
+
+	let userCode = $state(data.code || '');
+	let isLoading = $state(false);
+	let deviceInfo: OidcDeviceCodeInfo | undefined = $state();
+	let success = $state(false);
+	let errorMessage: string | null = $state(null);
+	let authorizationRequired = $state(false);
+
+	onMount(() => {
+		if (data.code && $userStore) {
+			authorize();
+		}
+	});
+
+	async function authorize() {
+		isLoading = true;
+		try {
+			// Get access token if not signed in
+			if (!$userStore) {
+				const loginOptions = await webauthnService.getLoginOptions();
+				const authResponse = await startAuthentication(loginOptions);
+				const user = await webauthnService.finishLogin(authResponse);
+				userStore.setUser(user);
+			}
+
+			const info = await oidcService.getDeviceCodeInfo(userCode);
+			deviceInfo = info;
+
+			if (info.authorizationRequired && !authorizationRequired) {
+				authorizationRequired = true;
+				isLoading = false;
+				return;
+			}
+
+			await oidcService.verifyDeviceCode(userCode);
+
+			success = true;
+		} catch (e) {
+			errorMessage = getAxiosErrorMessage(e);
+		} finally {
+			isLoading = false;
+		}
+	}
+</script>
+
+<svelte:head>
+	<title>{m.authorize_device()}</title>
+</svelte:head>
+
+<SignInWrapper
+	animate={!$appConfigStore.disableAnimations}
+	showAlternativeSignInMethodButton={$userStore == null}
+>
+	<div class="flex justify-center">
+		{#if deviceInfo?.client}
+			<ClientProviderImages client={deviceInfo.client} {success} error={!!errorMessage} />
+		{:else}
+			<LoginLogoErrorSuccessIndicator {success} error={!!errorMessage} />
+		{/if}
+	</div>
+	<h1 class="font-playfair mt-5 text-4xl font-bold">{m.authorize_device()}</h1>
+	{#if errorMessage}
+		<p class="text-muted-foreground mt-2">
+			{errorMessage}. {m.please_try_again()}
+		</p>
+	{:else if success}
+		<p class="text-muted-foreground mt-2">{m.the_device_has_been_authorized()}</p>
+	{:else if authorizationRequired}
+		<div transition:slide={{ duration: 300 }}>
+			<Card.Root class="mt-6">
+				<Card.Header class="pb-5">
+					<p class="text-muted-foreground text-start">
+						{@html m.client_wants_to_access_the_following_information({
+							client: deviceInfo!.client.name
+						})}
+					</p>
+				</Card.Header>
+				<Card.Content data-testid="scopes">
+					<ScopeList scope={deviceInfo!.scope} />
+				</Card.Content>
+			</Card.Root>
+		</div>
+	{:else}
+		<p class="text-muted-foreground mt-2">{m.enter_code_displayed_in_previous_step()}</p>
+		<form id="device-code-form" onsubmit={authorize} class="w-full max-w-[450px]">
+			<Input id="user-code" class="mt-7" placeholder={m.code()} bind:value={userCode} type="text" />
+		</form>
+	{/if}
+	{#if !success}
+		<div class="mt-10 flex w-full justify-stretch gap-2">
+			<Button href="/" class="w-full" variant="secondary">{m.cancel()}</Button>
+			{#if !errorMessage}
+				<Button form="device-code-form" class="w-full" onclick={authorize} {isLoading}
+					>{m.authorize()}</Button
+				>
+			{:else}
+				<Button class="w-full" on:click={() => (errorMessage = null)}>{m.try_again()}</Button>
+			{/if}
+		</div>
+	{/if}
+</SignInWrapper>

frontend/src/routes/login/alternative/+page.svelte

@@ -31,7 +31,7 @@
 	<title>{m.sign_in()}</title>
 </svelte:head>
 
-<SignInWrapper animate={!$appConfigStore.disableAnimations}>
+<SignInWrapper>
 	<div class="flex h-full flex-col justify-center">
 		<div class="bg-muted mx-auto rounded-2xl p-3">
 			<Logo class="h-10 w-10" />