def add_list():
j = request.get_json()
c = DatabaseConnection()
auth = check_auth(j, c)
if auth:
return auth
label = j.get("label", "")
if not label:
return {"err": "label must not be empty"}, 400
user = c.get_user(j["username"])
if not c.add_list(user["id"], label):
return {"err": "user already has list with same label"}, 409
return {"msg": "successfully added list"}, 201
