add a proper login page

pages/admin/booking/[uuid]/bill.tsx

@@ -1,5 +1,5 @@
-import { GetServerSideProps } from 'next'
 import React, { useEffect, useState } from 'react'
+import { GetServerSideProps } from 'next'
 import Footer from '../../../../components/footer'
 import Header from '../../../../components/header'
 import Input from '../../../../components/input'
@@ -11,31 +11,26 @@ import { getMilageMax } from '../../../../db/index'
 import { dateFormatFrontend } from '../../../../helpers/date'
 import { getBillTotal } from '../../../../helpers/bill'
 import { getBookingStatus } from '../../../../helpers/booking'
-import authenticate from '../../../../lib/authenticate'
-import withSession from '../../../../lib/session'
+import withSession, { isAdminSession } from '../../../../lib/session'
 import { getServerSideBooking } from '../../../../lib/getServerSideProps'
 
 export const getServerSideProps: GetServerSideProps = withSession(
   async (context) => {
     const { req, res } = context
 
-    const authenticatedUser = authenticate(req, res)
-    if (!authenticatedUser) {
-      // TODO: not sure if needed
-      req?.session.destroy()
+    const adminUser = isAdminSession(req, res)
+
+    if (!adminUser) {
       return { props: {} }
     }
 
-    req.session.set('user', authenticatedUser)
-    await req.session.save()
-
     const milageMax = await getMilageMax()
     const result = await getServerSideBooking(context)
     return {
       ...result,
       // TODO: have a closer look at this type issue. Seems like a bug
       // @ts-ignore
-      props: { ...result.props, milageMax },
+      props: { ...result.props, milageMax, user: adminUser },
     }
   }
 )
@@ -107,7 +102,7 @@ async function saveBill(
   return response.json()
 }
 
-export default function BillPage({
+export default function BookingBillPage({
   booking: bookingProp,
   milageMax,
 }: {