// ==UserScript==
// @name         知识星球吖
// @namespace    https://axutongxue.com/
// @version      2.5
// @license      MIT
// @description  1. 去掉 disabled-copy 类及水印遮挡；2. 自动点击"展开"按钮保持全文展开；3. 点击时间复制帖子内容；4. 15秒无鼠标活动自动刷新
// @author       kejin——公众号：懒人股选
// @match        *://wx.zsxq.com/*
// @grant        none
// @downloadURL none
// ==/UserScript==
(function () {
    'use strict';
    /* ************** 通用工具 ************** */
    function waitForKeyElements(selectorOrFunction, callback, waitOnce = true, interval = 300, maxIntervals = -1) {
        const select = () => (typeof selectorOrFunction === 'function' ? selectorOrFunction() : document.querySelectorAll(selectorOrFunction));
        const tick = () => {
            const nodes = select();
            if (nodes.length) {
                nodes.forEach(n => {
                    if (n.dataset.alreadyFound) return;
                    const cancel = callback(n);
                    if (!cancel) n.dataset.alreadyFound = '1';
                });
            }
            if (--maxIntervals !== 0 && !(waitOnce && nodes.length)) {
                setTimeout(tick, interval);
            }
        };
        tick();
    }
    /* ************** 1. 解除复制限制 ************** */
    waitForKeyElements('.disabled-copy', el => el.classList.remove('disabled-copy'), false, 1000);
    waitForKeyElements('[watermark]', el => el.setAttribute('style', 'padding:10px;'), false, 1000);
    /* ************** 2. 帖子自动展开 ************** */
    const processed = new WeakSet();
    function smartClick(btn) {
        if (!btn || processed.has(btn)) return;
        const txt = btn.textContent.trim();
        if (!/展[开示]/.test(txt)) return;
        btn.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true, view: window }));
        processed.add(btn);
    }
    function expandAll() {
        document.querySelectorAll('p.showAll, button.showAll, span.showAll').forEach(smartClick);
    }
    // 首次+动态
    window.addEventListener('load', () => {
        expandAll();
        new MutationObserver(() => expandAll()).observe(document.body, { childList: true, subtree: true });
        window.addEventListener('hashchange', expandAll);
    });

    /* ************** 3. 点击时间复制帖子内容 ************** */
    const timeClickProcessed = new WeakSet();

    function findPostContent(timeElement) {
        // 向上查找帖子容器
        let container = timeElement.closest('[class*="topic"], [class*="post"], [class*="feed-item"]');
        if (!container) {
            container = timeElement.closest('div[class*="item"]');
        }
        
        if (!container) return null;

        // 查找内容区域（尝试多种可能的选择器）
        const contentSelectors = [
            '.content',
            '[class*="content"]',
            '.text',
            '[class*="text"]',
            '.description',
            '[class*="description"]'
        ];

        for (const selector of contentSelectors) {
            const content = container.querySelector(selector);
            if (content && content.textContent.trim()) {
                return content.textContent.trim();
            }
        }

        return null;
    }

    function copyToClipboard(text) {
        if (navigator.clipboard && navigator.clipboard.writeText) {
            navigator.clipboard.writeText(text).then(() => {
                showCopyTip('复制成功！');
            }).catch(() => {
                fallbackCopy(text);
            });
        } else {
            fallbackCopy(text);
        }
    }

    function fallbackCopy(text) {
        const textarea = document.createElement('textarea');
        textarea.value = text;
        textarea.style.position = 'fixed';
        textarea.style.opacity = '0';
        document.body.appendChild(textarea);
        textarea.select();
        try {
            document.execCommand('copy');
            showCopyTip('复制成功！');
        } catch (err) {
            showCopyTip('复制失败，请手动复制');
        }
        document.body.removeChild(textarea);
    }

    function showCopyTip(message) {
        const tip = document.createElement('div');
        tip.textContent = message;
        tip.style.cssText = `
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(0, 0, 0, 0.8);
            color: white;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 14px;
            z-index: 10000;
            pointer-events: none;
        `;
        document.body.appendChild(tip);
        setTimeout(() => tip.remove(), 2000);
    }

    function addTimeClickListener(timeElement) {
        if (timeClickProcessed.has(timeElement)) return;
        
        // 添加样式提示可点击
        timeElement.style.cursor = 'pointer';
        timeElement.title = '点击复制帖子内容';
        
        timeElement.addEventListener('click', (e) => {
            e.preventDefault();
            e.stopPropagation();
            
            const content = findPostContent(timeElement);
            if (content) {
                copyToClipboard(content);
            } else {
                showCopyTip('未找到帖子内容');
            }
        });
        
        timeClickProcessed.add(timeElement);
    }

    // 监听时间元素（尝试多种可能的选择器）
    function attachTimeListeners() {
        const timeSelectors = [
            '[class*="time"]',
            '[class*="date"]',
            'time',
            'span[title*="202"]', // 匹配包含年份的时间
        ];

        timeSelectors.forEach(selector => {
            waitForKeyElements(selector, (el) => {
                // 检查是否是时间格式
                const text = el.textContent.trim();
                if (/\d{4}-\d{2}-\d{2}/.test(text) || /\d{2}:\d{2}/.test(text)) {
                    addTimeClickListener(el);
                }
            }, false, 1000);
        });
    }

    // 启动时间点击监听
    window.addEventListener('load', () => {
        attachTimeListeners();
    });

    /* ************** 4. 15秒无鼠标活动自动刷新 ************** */
    let inactivityTimer = null;
    const INACTIVITY_TIMEOUT = 15000; // 15秒

    function resetInactivityTimer() {
        // 清除现有计时器
        if (inactivityTimer) {
            clearTimeout(inactivityTimer);
        }
        
        // 设置新计时器
        inactivityTimer = setTimeout(() => {
            console.log('15秒无活动，刷新页面');
            location.reload();
        }, INACTIVITY_TIMEOUT);
    }

    // 监听鼠标活动
    const mouseEvents = ['mousemove', 'mousedown', 'click', 'scroll', 'keypress', 'touchstart'];
    mouseEvents.forEach(event => {
        document.addEventListener(event, resetInactivityTimer, true);
    });

    // 页面加载后启动计时器
    window.addEventListener('load', () => {
        resetInactivityTimer();
        console.log('自动刷新功能已启动：15秒无活动将自动刷新');
    });
})();