import { globals } from '../config/globals.js';

/*
    we will use sessionStorage during local development to aid in testing, vs. localStorage for production.
    sessionStorage does not persist across tabs, allowing developers to join a game as different players from different windows.
 */
export const UserUtility = {

    createNewAnonymousUserId (force = true, environment) {
        let newId, currentId;

        if (environment === globals.ENVIRONMENT.LOCAL) {
            currentId = sessionStorage.getItem(globals.PLAYER_ID_COOKIE_KEY);
        } else {
            currentId = localStorage.getItem(globals.PLAYER_ID_COOKIE_KEY);
        }
        if (currentId !== null && !force) {
            newId = currentId;
        } else {
            newId = createRandomUserId();
            if (environment === globals.ENVIRONMENT.LOCAL) {
                sessionStorage.setItem(globals.PLAYER_ID_COOKIE_KEY, newId);
            } else {
                localStorage.setItem(globals.PLAYER_ID_COOKIE_KEY, newId);
            }
        }
        return newId;
    },

    setAnonymousUserId (id, environment) {
        if (environment === globals.ENVIRONMENT.LOCAL) {
            sessionStorage.setItem(globals.PLAYER_ID_COOKIE_KEY, id);
        } else {
            localStorage.setItem(globals.PLAYER_ID_COOKIE_KEY, id);
        }
    },

    validateAnonUserSignature (environment) {
        let userSig;
        if (environment === globals.ENVIRONMENT.LOCAL) {
            userSig = sessionStorage.getItem(globals.PLAYER_ID_COOKIE_KEY);
        } else {
            userSig = localStorage.getItem(globals.PLAYER_ID_COOKIE_KEY);
        }
        return (
            userSig
            && typeof userSig === 'string'
            && /^[a-zA-Z0-9]+$/.test(userSig)
            && userSig.length === globals.USER_SIGNATURE_LENGTH
        )
            ? userSig
            : false;
    }

};

function createRandomUserId () {
    let id = '';
    for (let i = 0; i < globals.USER_SIGNATURE_LENGTH; i++) {
        id += globals.ACCESS_CODE_CHAR_POOL[Math.floor(Math.random() * globals.ACCESS_CODE_CHAR_POOL.length)];
    }
    return id;
}