Changelog (#399)
* feat: add changelog feature and update site navigation - Introduced a new Changelog page with pagination and detailed entry views. - Added components for displaying changelog entries, pagination, and entry details. - Updated site navigation to include a link to the new Changelog page. - Enhanced localization for changelog-related texts in marketing.json. * refactor: enhance Changelog page layout and entry display - Increased the number of changelog entries displayed per page from 2 to 20 for better visibility. - Improved the layout of the Changelog page by adjusting the container styles and removing unnecessary divs. - Updated the ChangelogEntry component to enhance the visual presentation of entries, including a new date badge with an icon. - Refined the CSS styles for Markdoc headings to improve typography and spacing. * refactor: enhance Changelog page functionality and layout - Increased the number of changelog entries displayed per page from 20 to 50 for improved user experience. - Updated ChangelogEntry component to make the highlight prop optional and refined the layout for better visual clarity. - Adjusted styles in ChangelogHeader and ChangelogPagination components for a more cohesive design. - Removed unnecessary order fields from changelog markdown files to streamline content management. * feat: enhance Changelog entry navigation and data loading - Refactored ChangelogEntry page to load previous and next entries for improved navigation. - Introduced ChangelogNavigation component to facilitate navigation between changelog entries. - Updated ChangelogDetail component to display navigation links and entry details. - Enhanced data fetching logic to retrieve all changelog entries alongside the current entry. - Added localization keys for navigation text in marketing.json. * Update package dependencies and enhance documentation layout - Upgraded various packages including @turbo/gen and turbo to version 2.6.0, and react-hook-form to version 7.66.0. - Updated lucide-react to version 0.552.0 across multiple packages. - Refactored documentation layout components for improved styling and structure. - Removed deprecated loading components and adjusted navigation elements for better user experience. - Added placeholder notes in changelog entries for clarity.
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Giancarlo Buomprisco
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apps/web/content/documentation/authentication/magic-links.mdoc
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apps/web/content/documentation/authentication/magic-links.mdoc
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---
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title: "Magic Links"
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description: "Passwordless authentication with email magic links."
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publishedAt: 2024-04-11
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order: 4
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status: "published"
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---
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> **Note:** This is mock/placeholder content for demonstration purposes.
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Magic links provide passwordless authentication by sending a one-time link to the user's email.
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## How It Works
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1. User enters their email address
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2. System sends an email with a unique link
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3. User clicks the link in their email
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4. User is automatically signed in
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## Benefits
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- **No password to remember** - Better UX
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- **More secure** - No password to steal
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- **Lower friction** - Faster sign-up process
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- **Email verification** - Confirms email ownership
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## Implementation
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### Magic Link Form
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```tsx
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'use client';
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import { useForm } from 'react-hook-form';
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import { sendMagicLinkAction } from '../_lib/actions';
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export function MagicLinkForm() {
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const { register, handleSubmit, formState: { isSubmitting } } = useForm();
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const [sent, setSent] = useState(false);
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const onSubmit = async (data) => {
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const result = await sendMagicLinkAction(data);
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if (result.success) {
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setSent(true);
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}
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};
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if (sent) {
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return (
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<div className="text-center">
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<h2>Check your email</h2>
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<p>We've sent you a magic link to sign in.</p>
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</div>
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);
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}
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return (
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<form onSubmit={handleSubmit(onSubmit)}>
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<div>
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<label>Email address</label>
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<input
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type="email"
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{...register('email', { required: true })}
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placeholder="you@example.com"
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/>
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</div>
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<button type="submit" disabled={isSubmitting}>
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{isSubmitting ? 'Sending...' : 'Send magic link'}
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</button>
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</form>
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);
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}
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```
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### Server Action
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```typescript
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'use server';
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import { enhanceAction } from '@kit/next/actions';
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import { getSupabaseServerClient } from '@kit/supabase/server-client';
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import { z } from 'zod';
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export const sendMagicLinkAction = enhanceAction(
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async (data) => {
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const client = getSupabaseServerClient();
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const origin = process.env.NEXT_PUBLIC_SITE_URL!;
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const { error } = await client.auth.signInWithOtp({
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email: data.email,
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options: {
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emailRedirectTo: `${origin}/auth/callback`,
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shouldCreateUser: true,
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},
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});
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if (error) throw error;
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return {
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success: true,
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message: 'Check your email for the magic link',
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};
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},
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{
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schema: z.object({
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email: z.string().email(),
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}),
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}
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);
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```
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## Configuration
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### Enable in Supabase
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1. Go to **Authentication** → **Providers** → **Email**
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2. Enable "Enable Email Provider"
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3. Enable "Enable Email Confirmations"
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### Configure Email Template
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Customize the magic link email in Supabase Dashboard:
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1. Go to **Authentication** → **Email Templates**
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2. Select "Magic Link"
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3. Customize the template:
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```html
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<h2>Sign in to {{ .SiteURL }}</h2>
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<p>Click the link below to sign in:</p>
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<p><a href="{{ .ConfirmationURL }}">Sign in</a></p>
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<p>This link expires in {{ .TokenExpiryHours }} hours.</p>
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```
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## Callback Handler
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Handle the magic link callback:
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```typescript
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// app/auth/callback/route.ts
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import { createRouteHandlerClient } from '@supabase/auth-helpers-nextjs';
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import { cookies } from 'next/headers';
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import { NextResponse } from 'next/server';
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export async function GET(request: Request) {
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const requestUrl = new URL(request.url);
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const token_hash = requestUrl.searchParams.get('token_hash');
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const type = requestUrl.searchParams.get('type');
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if (token_hash && type === 'magiclink') {
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const cookieStore = cookies();
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const supabase = createRouteHandlerClient({ cookies: () => cookieStore });
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const { error } = await supabase.auth.verifyOtp({
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token_hash,
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type: 'magiclink',
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});
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if (!error) {
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return NextResponse.redirect(new URL('/home', request.url));
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}
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}
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// Return error if verification failed
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return NextResponse.redirect(
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new URL('/auth/sign-in?error=invalid_link', request.url)
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);
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}
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```
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## Advanced Features
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### Custom Redirect
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Specify where users go after clicking the link:
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```typescript
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await client.auth.signInWithOtp({
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email: data.email,
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options: {
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emailRedirectTo: `${origin}/onboarding`,
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},
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});
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```
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### Disable Auto Sign-Up
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Require users to sign up first:
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```typescript
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await client.auth.signInWithOtp({
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email: data.email,
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options: {
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shouldCreateUser: false, // Don't create new users
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},
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});
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```
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### Token Expiry
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Configure link expiration (default: 1 hour):
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```sql
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-- In Supabase SQL Editor
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ALTER TABLE auth.users
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SET default_token_lifetime = '15 minutes';
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```
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## Rate Limiting
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Prevent abuse by rate limiting magic link requests:
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```typescript
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import { ratelimit } from '~/lib/rate-limit';
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export const sendMagicLinkAction = enhanceAction(
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async (data, user, request) => {
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// Rate limit by IP
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const ip = request.headers.get('x-forwarded-for') || 'unknown';
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const { success } = await ratelimit.limit(ip);
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if (!success) {
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throw new Error('Too many requests. Please try again later.');
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}
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const client = getSupabaseServerClient();
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await client.auth.signInWithOtp({
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email: data.email,
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});
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return { success: true };
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},
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{ schema: EmailSchema }
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);
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```
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## Security Considerations
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### Link Expiration
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Magic links should expire quickly:
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- Default: 1 hour
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- Recommended: 15-30 minutes for production
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- Shorter for sensitive actions
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### One-Time Use
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Links should be invalidated after use:
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```typescript
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// Supabase handles this automatically
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// Each link can only be used once
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```
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### Email Verification
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Ensure emails are verified:
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```typescript
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const { data: { user } } = await client.auth.getUser();
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if (!user.email_confirmed_at) {
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redirect('/verify-email');
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}
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```
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## User Experience
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### Loading State
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Show feedback while sending:
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```tsx
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export function MagicLinkForm() {
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const [status, setStatus] = useState<'idle' | 'sending' | 'sent'>('idle');
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const onSubmit = async (data) => {
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setStatus('sending');
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await sendMagicLinkAction(data);
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setStatus('sent');
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};
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return (
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<>
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{status === 'idle' && <EmailForm onSubmit={onSubmit} />}
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{status === 'sending' && <SendingMessage />}
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{status === 'sent' && <CheckEmailMessage />}
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</>
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);
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}
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```
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### Resend Link
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Allow users to request a new link:
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```tsx
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export function ResendMagicLink({ email }: { email: string }) {
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const [canResend, setCanResend] = useState(false);
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const [countdown, setCountdown] = useState(60);
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useEffect(() => {
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if (countdown > 0) {
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const timer = setTimeout(() => setCountdown(countdown - 1), 1000);
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return () => clearTimeout(timer);
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} else {
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setCanResend(true);
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}
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}, [countdown]);
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const handleResend = async () => {
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await sendMagicLinkAction({ email });
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setCountdown(60);
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setCanResend(false);
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};
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return (
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<button onClick={handleResend} disabled={!canResend}>
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{canResend ? 'Resend link' : `Resend in ${countdown}s`}
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</button>
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);
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}
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```
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## Email Deliverability
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### SPF, DKIM, DMARC
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Configure email authentication:
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1. Add SPF record to DNS
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2. Enable DKIM signing
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3. Set up DMARC policy
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### Custom Email Domain
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Use your own domain for better deliverability:
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1. Go to **Project Settings** → **Auth**
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2. Configure custom SMTP
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3. Verify domain ownership
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### Monitor Bounces
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Track email delivery issues:
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```typescript
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// Handle email bounces
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export async function handleEmailBounce(email: string) {
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await client.from('email_bounces').insert({
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email,
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bounced_at: new Date(),
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});
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// Notify user via other channel
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}
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```
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## Testing
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### Local Development
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In development, emails go to InBucket:
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```
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http://localhost:54324
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```
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Check this URL to see magic link emails during testing.
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### Test Mode
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Create a test link without sending email:
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```typescript
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if (process.env.NODE_ENV === 'development') {
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console.log('Magic link URL:', confirmationUrl);
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}
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```
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## Best Practices
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1. **Clear communication** - Tell users to check spam
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2. **Short expiry** - 15-30 minutes for security
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3. **Rate limiting** - Prevent abuse
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4. **Fallback option** - Offer password auth as backup
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5. **Custom domain** - Better deliverability
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6. **Monitor delivery** - Track bounces and failures
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7. **Resend option** - Let users request new link
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8. **Mobile-friendly** - Ensure links work on mobile
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