make isAdminSession usable by api routes

lib/session.ts

@@ -12,17 +12,20 @@ export default function withSession(handler: Handler) {
       // the next line allows to use the session in non-https environements like
       // Next.js dev mode (http://localhost:3000)
       secure: process.env.NODE_ENV === 'production',
-      path: '/admin',
     },
   })
 }
 
-export const isAdminSession = function (req: any, res: any) {
+export function isAdminSession(req: any, res: any) {
   const user = req?.session.get('user')
   if (user && user.role === 'admin') {
     return user
   }
 
+  return false
+}
+
+export function redirectToLogin(req: any, res: any) {
   const redirectTargetUrl = `${getBaseURL()}/admin/login?redirect=${encodeURIComponent(
     req.url
   )}`
@@ -31,6 +34,4 @@ export const isAdminSession = function (req: any, res: any) {
     Location: redirectTargetUrl,
   })
   res.end()
-
-  return false
 }