clean up type mess in SSR functions

lib/getServerSideProps.ts

@@ -1,7 +1,14 @@
-import { GetServerSideProps } from 'next'
 import { getBookingByUUID } from '../db/index'
 
-export const getServerSideBooking: GetServerSideProps = async (context) => {
+export interface ServerSideBooking {
+  props: {
+    booking: object
+  }
+}
+
+export const getServerSideBooking = async (
+  context: any
+): Promise<ServerSideBooking> => {
   const {
     res,
     params: { uuid: uuids },
@@ -12,14 +19,14 @@ export const getServerSideBooking: GetServerSideProps = async (context) => {
   if (!booking) {
     res.statusCode = 404
     res.end()
-    return { props: {} }
+    return { props: { booking: null } }
   }
 
   await booking.populate('booker').execPopulate()
   await booking.populate('bill').execPopulate()
 
   // TODO: hack, not sure why _id is not serilizable
-  const bookingJSON = JSON.parse(JSON.stringify(booking.toJSON()))
+  const bookingJSON = JSON.parse(JSON.stringify(booking.toJSON())) as object
   return {
     props: { booking: bookingJSON },
   }

lib/session.ts

@@ -1,6 +1,15 @@
 import { withIronSession, Handler } from 'next-iron-session'
 import { getBaseURL } from '../helpers/url'
 
+export enum USER_ROLE {
+  ADMIN = 'admin',
+}
+
+export interface UserData {
+  username: string
+  role: USER_ROLE
+}
+
 const SESSION_SECRET =
   process.env.SESSION_SECRET || 'dev-env-default-secret-991823723'
 
@@ -16,13 +25,13 @@ export default function withSession(handler: Handler) {
   })
 }
 
-export function isAdminSession(req: any, res: any) {
-  const user = req?.session.get('user')
-  if (user && user.role === 'admin') {
+export function isAdminSession(req: any) {
+  const user = req?.session.get('user') as UserData
+  if (user && user.role === USER_ROLE.ADMIN) {
     return user
   }
 
-  return false
+  return null
 }
 
 export function redirectToLogin(req: any, res: any) {