thorio/KGrabber

const util = require("../util");

const defaultPreferences = {
    general: {
        quality_order: "1080, 720, 480, 360",
    },
    internet_download_manager: {
        idm_path: "C:\\Program Files (x86)\\Internet Download Manager\\IDMan.exe",
        download_path: "%~dp0",
        arguments: "/a",
        keep_title_in_episode_name: false,
    },
    compatibility: {
        force_default_grabber: false,
        enable_experimental_grabbers: false,
        disable_automatic_actions: false,
    },
};

let preferences;

exports.get = () => {
    if (preferences === undefined) {
        preferences = load(defaultPreferences);
    }
    return preferences;
};

let save = exports.save = (newPreferences) => {
    util.clear(preferences);
    util.merge(preferences, newPreferences);
    GM_setValue("KG-preferences", JSON.stringify(preferences));
};

exports.reset = () =>
    save({});

/**
 * loads user preferences from GM storage, while
 * 1) adding new keys from defaults
 * 2) removing keys that don't exist in defaults
 */
function load(defaults) {
    let saved = JSON.parse(GM_getValue("KG-preferences", "{}"));

    for (let i in saved) {
        if (defaults[i] === undefined) { // delete every category that doesn't exist in defaults
            delete saved[i];
        } else {
            for (let j in saved[i]) {
                if (defaults[i][j] === undefined) { // delete every key that doesn't exist in defaults
                    delete saved[i][j];
                }
            }
        }
    }
    return util.merge(util.clone(defaults), saved);
}

function getPreferredServers() {
    return JSON.parse(GM_getValue("preferredServers", "{}"));
}

function savePreferredServers(servers) {
    GM_setValue("preferredServers", JSON.stringify(servers));
}

exports.getPreferredServer = (host) =>
    getPreferredServers()[host];

exports.setPreferredServer = (host, server) => {
    let saved = getPreferredServers();
    saved[host] = server;
    savePreferredServers(saved);
};