refactor: added support for base url using a shared function

server/auth.ts

@@ -4,6 +4,7 @@ import fetch from 'node-fetch'
 import { DatabaseConnection, getUser, createUser } from './db/database'
 import { UserId } from '../shared/model'
 import { SessionService } from './routes'
+import { prependBaseUrl } from '../shared/utils'
 
 export function setupOAuth(r: Router, db: DatabaseConnection, sessions: SessionService) {
     const config = {
@@ -80,10 +81,10 @@ export function setupOAuth(r: Router, db: DatabaseConnection, sessions: SessionS
 
             res.cookie('sid', sessions.createSession(authUser.id), { maxAge: 1000 * 60 * 60 * 24 * 7 })
 
-            return res.status(200).redirect('/')
+            return res.status(200).redirect(prependBaseUrl('/'))
         } catch (error) {
             console.error('Access Token Error', error.message)
-            return res.status(500).redirect(`/error?message=${encodeURIComponent('Autenticazione fallita')}`)
+            return res.status(500).redirect(prependBaseUrl(`/error?message=${encodeURIComponent('Autenticazione fallita')}`))
         }
     })
 }