Supabase OAuth using Hono server + SvelteKit

const app = new Hono();

app.use('*', supabaseMiddleware());
app.get(
  '/auth/signinwithgithub',
  async (c) => {
    const supabase = getSupabase(c);
    const { data, error } = await supabase.auth.signInWithOAuth({
        provider: 'github',
        options: {
            redirectTo: 'http://localhost:5173/api/v2/auth/oauth/github/callback'
        }
    });
    if (data.url) {
        return c.json({ success: true, url: data.url });
    }
    return c.json({
        message: 'An error occurred. Cannot log you in.'
    });
})
.get('/auth/oauth/github/callback', async (c) => {
    const code = c.req.query('code');

    if (!code) {
        return c.json({ error: 'Authorization code is missing' }, 400);
    }

    const supabase = getSupabase(c);

    const { data, error } = await supabase.auth.exchangeCodeForSession(code);
    const { session } = data;

    if (error) {
        return c.json({ error: error.message }, 400);
    }

    return c.json({
        message: 'User session retrieved successfully',
        session
    });
});