Add auth to refresh call

ml/digest-score/auth.py

@@ -2,10 +2,23 @@ import os
 import jwt
 from flask import request, jsonify
 from functools import wraps
+from datetime import datetime, timedelta
+
 
 SECRET_KEY = os.getenv('JWT_SECRET')
 ADMIN_SECRET_KEY = os.getenv('JWT_ADMIN_SECRET_KEY')
 
+def generate_admin_token():
+  expiration_time = datetime.utcnow() + timedelta(minutes=5)
+  payload = {
+      'role': 'admin',
+      'exp': expiration_time
+  }
+
+  token = jwt.encode(payload, ADMIN_SECRET_KEY, algorithm="HS256")
+  return token
+
+
 def user_token_required(f):
     @wraps(f)
     def decorated(*args, **kwargs):