/**
 * @author oldj
 * @blog http://oldj.net
 */

'use strict';

const fs = require('fs');
const paths = require('./paths');
const util = require('./util');
const io = require('./io');
// const AutoLaunch = require('auto-launch');
// const auto_launch = new AutoLaunch({
//     name: 'SwitchHosts!',
//     path: paths.current_app_path,
// });

let is_loaded;
let data = {};
let _t;


function load() {
    if (io.isFile(paths.preference_path)) {
        let cnt = fs.readFileSync(paths.preference_path, 'utf-8');
        try {
            data = JSON.parse(cnt);
        } catch (e) {
            console.log(e);
        }
    }

    return data;
}

function get(key, default_value=null) {
    if (!is_loaded) load();
    return key in data ? data[key] : default_value;
}

function set(key, value, callback) {
    clearTimeout(_t);
    if (!is_loaded) load();

    data[key] = value;
    _t = setTimeout(() => {
        fs.writeFile(paths.preference_path, JSON.stringify(data), 'utf-8', (err) => {
            if (err) {
                console.log(err);
            }
            typeof callback === 'function' && callback(err);
        });
    }, 100);
}

module.exports = {
    load: load,
    get: get,
    set: set
};