import { writable } from 'svelte/store'
import { browser } from '$app/environment';

export const uuid = writable(fromLocalStorage('uuid', null))
toLocalStorage(uuid, 'uuid');

function fromLocalStorage(storageKey, fallback) {
    if (browser) {
        const storedValue = localStorage.getItem(storageKey);
        if (storedValue !== 'undefined') {
            return storedValue
        }
    }
    return fallback
}

function toLocalStorage(store, storageKey) {
    if (browser) {
        store.subscribe(value => {
            localStorage.setItem(storageKey, value)
        })
    }
}