// ==UserScript==
// @name         Nuist南信大公告更新检测
// @namespace    https://bulletin.nuist.edu.cn/
// @version      2.5
// @description 每日检查 NUIST 公告页的变更，并返回前 10 个非置顶标题，并手动执行和通知变更
// @author       QianYu
// @crontab      * 1-23 once * *
// @grant        GM.setValue
// @grant        GM.getValue
// @grant        GM.registerMenuCommand
// @grant        GM_xmlhttpRequest
// @grant        GM_notification
// @connect      bulletin.nuist.edu.cn
// ==/UserScript==

(function() {
    'use strict';

    async function checkForChanges() {
        GM_xmlhttpRequest({
            method: 'GET',
            url: 'https://bulletin.nuist.edu.cn/791/list.htm',
            onload: async function(response) {
                const pageContent = response.responseText;

                const parser = new DOMParser();
                const doc = parser.parseFromString(pageContent, 'text/html');

                const currentZdtbTitles = [];
                const zdtbItems = doc.querySelectorAll('.zdtb a');
                zdtbItems.forEach(item => {
                    const title = item.textContent.trim();
                    currentZdtbTitles.push(title);
                });

                const previousZdtbTitles = await GM.getValue('zdtbTitles', []);

                let changeDetected = false;

                if (JSON.stringify(currentZdtbTitles) !== JSON.stringify(previousZdtbTitles)) {
                    changeDetected = true;
                    console.log('置顶标题发生变化！');
                } else {
                    console.log('置顶标题无变化。');
                }

                const newsTitles = [];
                const newsUrls = [];
                const newsItems = doc.querySelectorAll('.news_list.clearfix .news');
                let nonStickyCount = 0;

                newsItems.forEach((item, index) => {
                    if (!item.querySelector('.zdtb img') && nonStickyCount < 10) {
                        const titleElement = item.querySelector('.news_title .btt a');
                        const title = titleElement.textContent.trim();
                        const url = titleElement.href;

                        newsTitles.push(`${nonStickyCount + 1}. ${title}`);
                        newsUrls.push(url);
                        nonStickyCount++;
                    }
                });

                console.log('前10个非置顶公告标题:', newsTitles);

                if (newsTitles.length > 0) {
                    const newsContent = newsTitles.map((title, index) => `${title} - ${newsUrls[index]}`).join('\n');

                    GM_notification({
                        title: changeDetected ? 'NUIST Bulletin Update <有变化>' : 'NUIST Bulletin Update',
                        text: `前10个非置顶公告标题:\n${newsTitles.join('\n')}`,
                        timeout: 0,
                        image: 'https://www.nuist.edu.cn/_upload/tpl/00/43/67/template67/images/logo.png',
                        onclick: () => {
                            window.open(newsUrls[0], '_blank');
                        }
                    });
                    console.log('通知已发送');
                } else {
                    console.log('没有新的非置顶公告');
                }

                await GM.setValue('zdtbTitles', currentZdtbTitles);
            }
        });
    }

    checkForChanges();

    GM.registerMenuCommand('手动检查公告变化', checkForChanges);

})();