const addUserConfigs = ({ id, ...rest }) => ({
  type: "ADD_USER_CONFIGS",
  userId: id,
  userConfigs: rest
});

const getUserConfigs = userId => ({
  type: "GET_USER_CONFIGS",
  userId
});

function usersConfigs(state = {}, action) {
  switch (action.type) {
    case "GET_USER_CONFIGS":
      return state[action.userId];
    case "ADD_USER_CONFIGS":
      return { ...state, [action.userId]: action.userConfigs };
    default:
      return state;
  }
}