/**
 * This file is part of Haketilo.
 *
 * Function: Basic wrappers for storage API functions.
 *
 * Copyright (C) 2021 Wojtek Kosior
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * As additional permission under GNU GPL version 3 section 7, you
 * may distribute forms of that code without the copy of the GNU
 * GPL normally required by section 4, provided you include this
 * license notice and, in case of non-source distribution, a URL
 * through which recipients can access the Corresponding Source.
 * If you modify file(s) with this exception, you may extend this
 * exception to your version of the file(s), but you are not
 * obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * As a special exception to the GPL, any HTML file which merely
 * makes function calls to this code, and for that purpose
 * includes it by reference shall be deemed a separate work for
 * copyright law purposes. If you modify this code, you may extend
 * this exception to your version of the code, but you are not
 * obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * I, Wojtek Kosior, thereby promise not to sue for violation of this file's
 * license. Although I request that you do not make use of this code in a
 * proprietary program, I am not going to enforce this in court.
 */

#FROM common/browser.js      IMPORT browser
#FROM common/stored_types.js IMPORT TYPE_PREFIX

async function get(key)
{
#IF CHROMIUM
    const promise = new Promise(cb => browser.storage.local.get(key, cb));
#ELIF MOZILLA
    const promise = browser.storage.local.get(key);
#ENDIF

    return (await promise)[key];
}
#EXPORT get

async function set(key_or_object, value)
{
    const arg = typeof key_or_object === "object" ?
	  key_or_object : {[key_or_object]: value};
    return browser.storage.local.set(arg);
}
#EXPORT set

async function set_var(name, value)
{
    return set(TYPE_PREFIX.VAR + name, value);
}
#EXPORT set_var

async function get_var(name)
{
    return get(TYPE_PREFIX.VAR + name);
}
#EXPORT get_var

const on_changed = browser.storage.onChanged || browser.storage.local.onChanged;

#EXPORT cb => on_changed.addListener(cb)    AS listen
#EXPORT cb => on_changed.removeListener(cb) AS no_listen