From 02a962c83b10c37648de043eac7593eb64540f77 Mon Sep 17 00:00:00 2001
From: Moriz Wahl <moriz.wahl@gmx.de>
Date: Mon, 13 Sep 2021 13:04:09 +0200
Subject: [PATCH] JWT is updated in frontend from response header

---
 backend/package.json | 1 +
 backend/src/index.ts | 8 ++++++++
 frontend/src/main.js | 6 +++++-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/backend/package.json b/backend/package.json
index c337b8e35..e62085b2d 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -18,6 +18,7 @@
     "apollo-server-express": "^2.25.2",
     "axios": "^0.21.1",
     "class-validator": "^0.13.1",
+    "cors": "^2.8.5",
     "dotenv": "^10.0.0",
     "express": "^4.17.1",
     "graphql": "^15.5.1",
diff --git a/backend/src/index.ts b/backend/src/index.ts
index 50e2c0a60..b99e5bee4 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -2,6 +2,7 @@
 
 import 'reflect-metadata'
 import express from 'express'
+import cors from 'cors'
 import { buildSchema } from 'type-graphql'
 import { ApolloServer } from 'apollo-server-express'
 import { RowDataPacket } from 'mysql2/promise'
@@ -62,6 +63,13 @@ async function main() {
   // Express Server
   const server = express()
 
+  const corsOptions = {
+    origin: '*',
+    exposedHeaders: ['token'],
+  }
+
+  server.use(cors(corsOptions))
+
   const plugins = [
     {
       requestDidStart() {
diff --git a/frontend/src/main.js b/frontend/src/main.js
index 823df516c..0b0e98e2d 100755
--- a/frontend/src/main.js
+++ b/frontend/src/main.js
@@ -20,7 +20,11 @@ const authLink = new ApolloLink((operation, forward) => {
       Authorization: token && token.length > 0 ? `Bearer ${token}` : '',
     },
   })
-  return forward(operation)
+  return forward(operation).map((response) => {
+    const newToken = operation.getContext().response.headers.get('token')
+    if (newToken) store.commit('token', newToken)
+    return response
+  })
 })
 
 const apolloClient = new ApolloClient({