// ==UserScript==
// @name         Mann Co. Store Giveaway Autojoiner
// @namespace    http://tampermonkey.net/
// @version      2026-08-23
// @description  Tries to join giveaways on page load
// @author       Abhorrent_Anger
// @include      /^https?:\/\/mannco\.store\/giveaways.*?/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=mannco.store
// @grant        GM_xmlhttpRequest
// @require https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js
// @require https://cdn.jsdelivr.net/gh/CoeJoder/waitForKeyElements.js@v1.3/waitForKeyElements.js
// @run-at document-end
// ==/UserScript==

setTimeout(function () { location.reload(); }, 90 * 60 * 1000);

const OPEN_GIVEAWAY_SELECTOR = '.giveaways-list-item:not(.giveaways-list-item--joined)';

var bearerToken = '';
var csrfToken = '';

waitForKeyElements('.giveaways__content', () => {
    if ($(OPEN_GIVEAWAY_SELECTOR).len == 0) {
        return true;
    }
    if (updateTokens() && bearerToken && csrfToken) {
        joinGiveaways(bearerToken, csrfToken);
    } else {
        console.log('Couldn\'t fetch tokens for joining the giveaways!');
    }
    console.log('Done with giveaway join attempts');
});

function updateTokens() {
    bearerToken = getTokenFromCookie('auth');
    if (bearerToken) {
        console.log('Fetched the Bearer token from cookies: ', bearerToken);
    } else {
        console.log('Couldn\'t fetch the Bearer token from cookies: ', bearerToken);
        return false;
    }
    csrfToken = getTokenFromCookie('csrf');
    if (csrfToken) {
        console.log('Fetched the CSRF token from cookies: ', csrfToken)
        return true;
    }
    let xCSRF = new GM_xmlhttpRequest({
        method: 'GET',
        url: 'https://api.mannco.store/csrf/token',
        headers: { 'Authorization': 'Bearer ' + bearerToken },
        onreadystatechange: function (response) {
            if (response.readyState == 4) {
                if (response.status == 200) {
                    try {
                        let array = JSON.parse(response.response);
                        csrfToken = array['content']['csrf_token'];
                    } catch (error) {
                        console.error(error);
                        return false;
                    }
                    console.log('Successfully updated the CSRF token from API: ', csrfToken)
                    return true;
                } else {
                    console.log('Couldn\'t get a CSRF token!')
                }
            }
        }
    });
    return false;
}

function joinGiveaways(bearerToken, csrfToken) {
    $(OPEN_GIVEAWAY_SELECTOR).each(function () {
        let giveawayURL = $(this).attr('href');
        let giveaway = /[^/]*$/.exec(giveawayURL)[0];
        if (!giveaway || giveaway == 'undefined') {
            console.log('Couldn\'t detect the giveaway ID!', $(this), giveawayURL, giveaway);
            return;
        }
        let giveawayJoinURL = 'https://api.mannco.store/giveaways/join/' + giveaway;
        let xJoin = new GM_xmlhttpRequest({
            method: 'POST',
            url: giveawayJoinURL,
            headers: { 'Authorization': 'Bearer ' + bearerToken, 'X-Csrf-Token': csrfToken },
            onreadystatechange: function (response) {
                if (response.readyState == 4) {
                    if (response.status == 200) {
                        console.log('Successfully joined ' + giveaway, response.response);
                    } else {
                        console.log("Couldn't join " + giveaway, response, bearerToken, csrfToken);
                    }
                }
            }
        });
    });
}

function getCookie(name) {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop().split(';').shift();
}

function getTokenFromCookie(tokenName) {
    let cookieArray = getCookie(tokenName);

    let decodedTokenArray = decodeURIComponent(cookieArray);
    if (typeof decodedTokenArray !== 'string' || !decodedTokenArray || decodedTokenArray == undefined) {
        return false;
    }
    try {
        let array = JSON.parse(decodedTokenArray, true);
    } catch (error) {
        console.error(error);
        return false;
    }
    if (array['expiresAt'] === undefined || array['expiresAt'] > Date.now()) {
        return array['token'];
    }
    return false;
}