import { OrderedMap, Map, fromJS } from 'immutable'

import jwtDecode from 'jwt-decode'
import Cookies from 'universal-cookie'

const defaultState = Map({
  loading: false,
  username: "",
  isAdmin: false,
  isLogged: false,
  polochonToken: "",
  polochonUrl: "",
});

export default function userStore(state = defaultState, action) {
  switch (action.type) {
    case 'USER_LOGIN_PENDING':
      return state.set('loading', true);
    case 'USER_LOGIN_FULFILLED':
      if (action.payload.response.status === "error") {
        return logoutUser()
      }
      return updateFromToken(state, action.payload.response.data.token)
    case 'USER_SET_TOKEN':
      return updateFromToken(state, action.payload.token)
    case 'USER_LOGOUT':
      return logoutUser()
    case 'GET_USER_FULFILLED':
      return state.merge(Map({
        polochonToken: action.payload.response.data.token,
        polochonUrl: action.payload.response.data.url,
      }))
    default:
      return state;
  }
}

function logoutUser() {
  localStorage.removeItem('token');
  const cookies = new Cookies();
  cookies.remove('token');
  return defaultState
}

function updateFromToken(state, token) {
  const decodedToken = jwtDecode(token);
  localStorage.setItem('token', token);

  const cookies = new Cookies();
  cookies.set('token', token);

  return state.merge(Map({
    userLoading: false,
    isLogged: true,
    isAdmin: decodedToken.isAdmin,
    username: decodedToken.username,
  }))
}