feat(api): user/user-token (#50721)

Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>

api/src/utils/env.ts

@@ -31,12 +31,18 @@ assert.ok(process.env.API_LOCATION);
 assert.ok(process.env.SESSION_SECRET);
 assert.ok(process.env.FCC_ENABLE_SWAGGER_UI);
 assert.ok(process.env.FCC_ENABLE_DEV_LOGIN_MODE);
+assert.ok(process.env.JWT_SECRET);
 
 if (process.env.FREECODECAMP_NODE_ENV !== 'development') {
   assert.ok(process.env.COOKIE_DOMAIN);
   assert.ok(process.env.PORT);
   assert.ok(process.env.MONGOHQ_URL);
   assert.ok(process.env.SENTRY_DSN);
+  assert.notEqual(
+    process.env.JWT_SECRET,
+    'a_jwt_secret',
+    'The JWT secret should be changed from the default value.'
+  );
   assert.notEqual(
     process.env.SENTRY_DSN,
     'dsn_from_sentry_dashboard',
@@ -72,3 +78,4 @@ export const SENTRY_DSN =
     ? ''
     : process.env.SENTRY_DSN;
 export const COOKIE_DOMAIN = process.env.COOKIE_DOMAIN || 'localhost';
+export const JWT_SECRET = process.env.JWT_SECRET;

api/src/utils/user-token.ts

@@ -0,0 +1,7 @@
+import jwt from 'jsonwebtoken';
+
+import { JWT_SECRET } from './env';
+
+export function encodeUserToken(userToken: string): string {
+  return jwt.sign({ userToken }, JWT_SECRET);
+}