import {combineReducers} from 'redux'

// Component Reducers
import login from '../components/LoginContainer/reducers'
import forgotPassword from '../components/ForgotPasswordContainer/reducers'
import resetPassword from '../components/ResetPasswordContainer/reducers'

// Action Constants
import {RECEIVE_USER_SUCCESS, RECEIVE_LOGIN_SUCCESS, RECEIVE_LOGIN_ERROR} from '../components/LoginContainer/actions'
import {RECEIVE_RESET_SUCCESS} from '../components/ResetPasswordContainer/actions'
import {RECEIVE_PING_SUCCESS, REQUEST_PING, LOGOUT_USER, STORE_AUTH_TOKEN} from '../actions'

const user = (state = null, action) => {
    switch (action.type) {
        case RECEIVE_USER_SUCCESS:
            return action.user;
        case RECEIVE_LOGIN_ERROR:
        case LOGOUT_USER:
            return null;
        default:
            return state;
    }
};

const preferences = (state = null, action) => {
    switch (action.type) {
        case RECEIVE_USER_SUCCESS:
            const prefs = {};
            const {preferences} = action.user;

            preferences.map(pref => prefs[pref.code] = pref.user_preference || pref.default_option);

            return prefs;
        case LOGOUT_USER:
            return null;
        default:
            return state;
    }
};

const authToken = (state = null, action) => {
    switch (action.type) {
        case STORE_AUTH_TOKEN:
            return action.authToken;
        case RECEIVE_LOGIN_ERROR:
        case LOGOUT_USER:
            return null;
        default:
            return state;
    }
};

const isPinging = (state = false, action) => {
    switch (action.type) {
        case REQUEST_PING:
            return true;
        case RECEIVE_PING_SUCCESS:
        case RECEIVE_LOGIN_SUCCESS:
        case RECEIVE_LOGIN_ERROR:
        case LOGOUT_USER:
            return false;
        default:
            return state;
    }
};

const isLoggedIn = (state = false, action) => {
    switch (action.type) {
        case RECEIVE_LOGIN_SUCCESS:
        case RECEIVE_RESET_SUCCESS:
        case RECEIVE_PING_SUCCESS:
            return true;
        case RECEIVE_LOGIN_ERROR:
        case LOGOUT_USER:
            return false;
        default:
            return state;
    }
};

// Create reducer chain
const authentication = combineReducers({
    user,
    preferences,
    authToken,
    isLoggedIn,
    isPinging,
});

export default {
    authentication,
    login,
    forgotPassword,
    resetPassword
}