// FirefoxのプライベートモードなどではindexedDBが使用不可能なので、使う
import {
    get as iget,
    set as iset,
    del as idel
} from 'idb-keyval';

const fallbackName = (key: string) => `idbfallback::${key}`; 

export async function get(key: string) {
    if (window.indexedDB) return iget(key);
    return JSON.parse(localStorage.getItem(fallbackName(key)) || 'null');
}

export async function set(key: string, val: any) {
    if (window.indexedDB) return iset(key, val);
    return localStorage.setItem(fallbackName(key), JSON.stringify(val));
}

export async function del(key: string) {
    if (window.indexedDB) return idel(key);
    return localStorage.removeItem(fallbackName(key));
}