// ==UserScript==
// @name         lskdb
// @namespace    http://tampermonkey.net/
// @version      1.1.3
// @license      MIT
// @description  locale storage key database
// @author       smartacephale
// @match        *://*/*
// ==/UserScript==
/*
raison d'etre for this insane degenerative garbage:
if you have to store 1000+ unique keys,
you don't have to parse whole json array to check one value
*/
class LSKDB {
constructor(prefix = 'lsm-', lockKey = 'lsmngr-lock') {
this.prefix = prefix;
this.lockKey = lockKey;
// migration
const old = localStorage.getItem('lsmngr');
if (!old) return;
const list = JSON.parse(old);
localStorage.removeItem('lsmngr');
list.forEach(l => {
const i = localStorage.getItem(l);
if (i) {
const v = JSON.parse(i);
v.forEach(x => this.setKey(x));
}
localStorage.removeItem(l);
});
}
getAllKeys() {
const res = [];
for (const key in localStorage) {
if (key.startsWith(this.prefix)) {
res.push(key);
}
}
return res.map(r => r.slice(this.prefix.length));
}
getKeys(n = 12) {
const res = [];
for (const key in localStorage) {
if (res.length >= n) break;
if (key.startsWith(this.prefix)) {
res.push(key);
}
}
res.forEach(k => localStorage.removeItem(k));
return res.map(r => r.slice(this.prefix.length));
}
hasKey(key) {
return Object.hasOwn(localStorage, `${this.prefix}${key}`);
}
removeKey(key) {
localStorage.removeItem(`${this.prefix}${key}`);
}
setKey(key) {
localStorage.setItem(`${this.prefix}${key}`, '');
}
isLocked() {
const lock = localStorage.getItem(this.lockKey);
const locktime = 5 * 60 * 1000;
return !(!lock || Date.now() - lock > locktime);
}
lock(value) {
if (value) {
localStorage.setItem(this.lockKey, Date.now());
} else {
localStorage.removeItem(this.lockKey);
}
}
}