chore: rewrite /login page for OAuth, write createUser for the database

server/auth.ts

@@ -1,8 +1,11 @@
 import { Router } from 'express'
 import { AuthorizationCode } from 'simple-oauth2'
 import fetch from 'node-fetch'
+import { DatabaseConnection, getUser, createUser } from './db/database'
+import { UserId } from '../shared/model'
+import { SessionService } from './routes'
 
-export function setupOauth(r: Router) {
+export function setupOauth(r: Router, db: DatabaseConnection, sessions: SessionService) {
     const config = {
         client: {
             id: process.env.OAUTH_CLIENT_ID ?? '',
@@ -55,8 +58,29 @@ export function setupOauth(r: Router) {
                 })
             ).json()
 
-            // TODO: call to db && login
-            return res.status(200).json(userInfo)
+            type UserInfo = { name: string; email: string }
+
+            // Parse user info into a sensible struct
+            const authUser = {
+                id: (userInfo as UserInfo).email.split('@')[0] as UserId,
+                fullName: (userInfo as UserInfo).name
+                    .split(' ')
+                    .map(s => s.substring(0, 1) + s.substring(1).toLowerCase())
+                    .join(' '),
+            }
+
+            const user = await getUser(db, authUser.id)
+            if (!user) {
+                await createUser(db, {
+                    id: authUser.id,
+                    fullName: authUser.fullName,
+                    role: 'student',
+                })
+            }
+
+            res.cookie('sid', sessions.createSession(authUser.id), { maxAge: 1000 * 60 * 60 * 24 * 7 })
+
+            return res.status(200).redirect('/')
         } catch (error) {
             console.error('Access Token Error', error.message)
             return res.status(500).redirect(`/error?message=${encodeURIComponent('Autenticazione fallita')}`)