functional AuthReducer

authReducer.js

import { SET_CURRENT_USER } from '../actions/types';
import { isEmpty } from '../../utilities/validations';
import match from 'conditional-expression';

const initialState = {
  isAuthenticated: false,
  user: {}
};

/**
 * Sets new state for setting the current user
 * @param {object} previousState reducer state
 * @param {object} payload action payload
 * @returns {object} setCurrentUser :: (object, object) -> object
 */
const setCurrentUser = (previousState, payload) => ({
  ...previousState,
  isAuthenticated: !isEmpty(payload),
  user: payload
});

/**
 * Authentication reducer
 * @param {object} state reducer state
 * @param {object} action reducer action
 * @returns {object} authReducer :: (object, object) -> object
 */
export default (state = initialState, action = null) =>
  match(action.type)
    .equals(SET_CURRENT_USER).then(setCurrentUser(state, action.payload))
    .else(state);