// ==UserScript==
// @name         auto-exchange-invite
// @namespace    http://tampermonkey.net/
// @version      1.0.0
// @copyright    2025-06-05
// @description:en  Auto exchange pt invites when cost only 1,000 bonus in a random time 15s-60s.
// @description:zh-CN  当邀请码价格为 1,000 魔力值的时候，随机等待 15s-60s 后自动交换。
// @author       missingmeow
// @match        *://www.ptskit.com/mybonus.php*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // 定义等待函数
    var wait = (ms) => new Promise((resolve) => setTimeout(resolve, ms));

    // 获取随机数
    function getRandomInt(min, max) {
        return Math.floor(Math.random() * (max - min)) + min;
    }

    // 交换邀请名额
    function exchangeInvite() {
        try {
            const td = document.querySelector('td[id="outer"]');
            if (!td) throw new Error('td not found');

            const table = td.querySelector('table');
            if (!table) throw new Error('table not found');

            const rows = table.querySelectorAll('tr');
            const targetRow = Array.from(rows).find(tr => {
                // 检查是否包含指定的 <form>
                const form = tr.querySelector('form[action="?action=exchange"][method="post"]') !== null;
                if (!form) return false;

                const tds = tr.querySelectorAll('td');
                const is1000 = Array.from(tds).find(td => {
                    return td.textContent === '1,000';
                });
                if (!is1000) return false;

                const hasInviteText = Array.from(tds).some(td => {
                    return td.textContent.includes('1个邀请名额') && ! tr.textContent.includes('临时');
                });
                return hasInviteText;
            });
            if (!targetRow) throw new Error('Target row not found');

            const submitBtn = targetRow.querySelector('input[type="submit"]');
            if (!submitBtn) throw new Error('Submit button not found');

            console.log('准备交换邀请名额...');
            submitBtn.click();

        } catch (error) {
            console.error('操作失败:', error.message);
        }
    }

    const sec = getRandomInt(15000, 60000);
    console.log('倒计时 %d 秒后开始交换邀请名额...', sec/1000);
    wait(sec).then(() => {
        exchangeInvite();
    });
})();