feat: implemented very simple login for testing

src/pages/dashboard.astro

@@ -0,0 +1,7 @@
+---
+import Layout from '../layouts/layout.astro'
+---
+
+<Layout>
+  <h1>Dashboard</h1>
+</Layout>

src/pages/sign-in.astro

@@ -1,11 +1,17 @@
 ---
+import { backendSignIn } from '../backend/sign-in'
 import LoginForm from '../islands/LoginForm.vue'
 import Layout from '../layouts/layout.astro'
 import { loginSchema } from '../schemas/login'
+import { isLoggedIn, setAuthCookie } from '../utils/auth'
 
 let email = ''
 let error = ''
 
+if (isLoggedIn(Astro.cookies)) {
+  return Astro.redirect('/dashboard', 303)
+}
+
 if (Astro.request.method === 'POST') {
   const formData = await Astro.request.formData()
   const input = {
@@ -20,7 +26,14 @@ if (Astro.request.method === 'POST') {
     error = result.error.issues[0]?.message ?? 'Invalid form data.'
   } else {
     email = result.data.email
-    console.log('POST DATA', result.data)
+
+    const ok = await backendSignIn(email, input.password?.toString() ?? '')
+    if (ok) {
+      setAuthCookie(Astro.cookies)
+      return Astro.redirect('/dashboard', 303)
+    } else {
+      error = 'E-Mail or password wrong'
+    }
   }
 }
 ---

src/pages/sign-out.ts

@@ -0,0 +1,7 @@
+import type { APIRoute } from 'astro'
+import { clearAuthCookie } from '../utils/auth'
+
+export const POST: APIRoute = ({ cookies, redirect }) => {
+  clearAuthCookie(cookies)
+  return redirect('/sign-in', 303)
+}