// ==UserScript==
// @name         复制授权拦截器
// @namespace    https://viayoo.com/
// @version      3.20
// @description  复制必弹窗，2次允许后开始自由复制，3次拒绝永久禁用(变灰，点击灰点恢复变红)，点击小红点恢复，红绿切换自由复制。
// @author       Aloazny & Deepseek
// @match        *://*/*
// @run-at       document-start
// @icon       data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAZCAYAAAArK+5dAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAAXNSR0IArs4c6QAAAARzQklUCAgICHwIZIgAAAYHSURBVEiJnZZtbFPXGcf/516/xNe+fs9N4tgpNAQyAW1XGxqnKc2LKSidKKQEDTGh0k6btGpVS1WaVpt2NaSJqlA0RazjA0WqWqmyWl4i1Sh4gbQLtrfGJcExDcQm5M3QhITYvrbj2L63HyBMCqF0fT4dPUfP73+Onkfnf+D1enVut5vGouB5XtbT08Muzi8Ot9utiMVizFJ7Ho9HSwDA6/XqTO3t6mwq9aqCYRyFQiFZ0Gg6O93uYzwgPkzE4/EoOY6jHQ5HeiHX09PD5nK5DAGAC/X1T+hsti6ustKo0WohUhQSExOYGBjoEDKZFxu6u/M/RaS5uXkegMztdpPW1laREJInboBe1dIyUL5uXfVoJCIJk5Mhk1ptLquutuRzOVzz+9+qOXfu4IPA7+07xsqI/E8Gk+H59HxKLYoSJacVYnJWGBYp1TaZtaGhzrRsWXV6ehp9/f1tL/f2fni+vj6XFYSuVQ0NtWqz+bcAlhQ48PZRnY7V/2t9/VMOVs8ikZhFOp3GYPDKOJHIK23v7YhTFFCp1GiQicdxeWzsCICk6sABRTad/iwrCFCq1ZVLwfk/HNFoGZPH6ap1aA1aSJIItZrF1b6h75OC0Lz1984YAFASIVPzogiVSoXWNWueBICampokZTQ+o1CpkM9mE4vhH7zxgcrMFXc4Nzpr1awaoliAJAHffNU7PTUxvXHv/t+E/H6/LBwOK6jCtm3B+PDwbVNFBdjS0lOBpqaD/9206XNrRcV2FBXBYLUa/Rs3Hbp3ct6tkLPWL5xNzgZWx0IUCwCA4L+D8djw2Oa2w3tCALB79+5UOBxWEEmSiL+p6delVVWflK5cSeVzOdAyGSiahihJKBCCa8E+yWey7580zOw3FFa5a1212wxmw104wbcXLgqj0ZHN+95/6cLi25KFxYXGxudULPsXRqezi/l8ijWbDQabjQxfGYJ81+sYn81Lod6BS7VNzseNnP5eaZ+vP3P9avRXbx18+dxSvSIPyEk+13NtKq7kb6pX3iEUZ8FAbwil1jIUlxVDkvKgaIJ+fzgbHYy07Ht/j2cpOADc90QsxLFr0Z61jb+jGNvyDSOREaI3GpCbz4HVMwCREA4O5ocGIjvfPrin40GMHxUAAM9/PN1rK2o2r1i9wjqXnsN3/WGYy8wYvjKKSCj6z32HXjr0Y/UPFTjyejv/eP3Tu8qXlRONnoHOyGJmchZDoSHIZPQTrpoXBry+U4M/S8DncrU9isRf9eufJpRGA0IIpm7cwuXgdyhilNjQvIEmhNq6bsWzwbP+U5EHce41OdDUtFGhVvOMXm8v5PMp7d0puj54FfSu1zAeL0h9vv6QQql4rG5zHVjdHdGHTRENAL7Gxp0lVVUnltntFWqTSWYsL1epjUYCQqDlinHry5NS/2Rh/6w2tosRix+zLrdWM2oGkiSi1FYqT6cyLzpXur466z85dp/At+3tFk08/mX56tXMyMWLM2OXLn146/r1G/Kiomql0UiEWAy3hqOHWz5tf6e7u1t8qnHHyeno+DrOwq1QMSpIkoiyijJFMpnc7vxFo/es/9SNBfjx48eLqHRHh0O/fLlhenQUyZs3tzq7ut5c39m5PTYy8jnm5nB7fHzG2dn55kIRz++YzwsTLYFz/vPJeBIUdaeN9mfsupJHLJ0H3ji+FrjjDy6Xi1CyfN4spyjMZTK4HI1+AwCBQIAVZ2a+ns9kIFMqtYuvvffw3szU91Nb/F1+XyqZAkXRIARY/6zDVGLjvH9/9+M1HMfRNpstQ4lANCsIUOl0oDjujwCYTFvbvJxhdio1GmRTqehSzeP/8aqQEKabfV5/MHE7AUIoZOYyWPXLqhK1Xnfm/GeXSwDgnqOVORzVo5GIlLh5M8RptWbL/+FoNBR/Npr1zcJcUgNIlJwuKiw42v88uby8y1hZadTp9ZB+hifzPC/jeV4EoDx69GjebrfD4XDklvxV5ACByOVnzpw48dFP+VW43W7aYrEwdXV1yYXc6dOn2S1btmTg9Xp1kiRRi4s8Ho9ybGxM9TB4a2srHQgE7huEuwztD4RTprHuTuxTAAAAAElFTkSuQmCC
// @grant        GM_setClipboard
// @license      MIT
// ==/UserScript==

(function () {
    const KEY = 'copyMonitor:v3'; if (window[KEY]) return; window[KEY] = true;
    const CONFIG = { COPY_TIME_THRESHOLD: 2000, COPY_COUNT_THRESHOLD: 5, QUICK_COPY_INTERVAL: 50, LONG_PRESS_THRESHOLD: 500 };
    let copyRecords = [], lastTouchTime = 0, longPressTimer = null, hasUserAction = false, isMonitoring = true, lastUserClickTime = 0;

    const setupUserActionDetection = () => {
        document.addEventListener('click', (e) => {
            hasUserAction = true; lastUserClickTime = Date.now();
            const isCopyButton = e.target.closest && (e.target.closest('[data-action="copy"]') || e.target.closest('[onclick*="copy"]'));
            if (isCopyButton) setTimeout(() => {}, 1000);
        }, { capture: true, passive: true });

        document.addEventListener('touchstart', (e) => {
            hasUserAction = true; lastTouchTime = Date.now();
            longPressTimer = setTimeout(() => { hasUserAction = true; }, CONFIG.LONG_PRESS_THRESHOLD);
        }, { capture: true, passive: true });

        document.addEventListener('touchend', () => { clearTimeout(longPressTimer); }, { capture: true, passive: true });
        document.addEventListener('mousedown', () => { hasUserAction = true; }, { capture: true, passive: true });
        
        document.addEventListener('selectionchange', () => {
            const selection = window.getSelection().toString();
            if (selection.length > 0) hasUserAction = true;
        }, { capture: true, passive: true });
    };

    const recordCopy = (method) => {
        if (!isMonitoring) return;
        const now = Date.now(), isRecentUserAction = now - lastUserClickTime < 1000;
        copyRecords.push({ timestamp: now, method: method, hasUserAction: hasUserAction || isRecentUserAction });
        copyRecords = copyRecords.filter(record => now - record.timestamp <= CONFIG.COPY_TIME_THRESHOLD);
        detectMaliciousCopy();
    };

    const detectMaliciousCopy = () => {
        const now = Date.now();
        const copiesWithoutUserAction = copyRecords.filter(record => !record.hasUserAction && now - record.timestamp <= CONFIG.COPY_TIME_THRESHOLD);
        
        if (copiesWithoutUserAction.length >= CONFIG.COPY_COUNT_THRESHOLD) {
            const hasMaliciousPattern = checkMaliciousPattern(copiesWithoutUserAction);
            if (hasMaliciousPattern) blockMaliciousCopy("检测到异常复制行为：短时间内自动复制次数过多");
            return;
        }

        if (copiesWithoutUserAction.length >= 2) {
            const hasQuickCopy = checkMaliciousPattern(copiesWithoutUserAction);
            if (hasQuickCopy) blockMaliciousCopy("检测到异常复制行为：快速连续自动复制");
        }
    };

    const checkMaliciousPattern = (copies) => {
        if (copies.length < 2) return false;
        for (let i = 1; i < copies.length; i++) {
            const timeDiff = copies[i].timestamp - copies[i - 1].timestamp;
            if (timeDiff <= CONFIG.QUICK_COPY_INTERVAL) return true;
        }
        return false;
    };

    const blockMaliciousCopy = (reason) => {
        console.warn('复制拦截:', reason);
        isMonitoring = false;
        showWarning(reason);
        setTimeout(() => { isMonitoring = true; copyRecords = []; }, 10000);
    };

    const showWarning = (message) => {
        if (document.querySelector('.copy-monitor-warning')) return;
        const modal = document.createElement('div');
        modal.className = 'copy-monitor-warning';
        modal.style.cssText = `position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);display:flex;align-items:center;justify-content:center;z-index:2147483647;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;`;
        
        const dialog = document.createElement('div');
        dialog.style.cssText = `background:white;padding:20px;border-radius:12px;max-width:80%;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,0.15);`;
        
        const title = document.createElement('h3');
        title.textContent = '安全警告'; title.style.cssText = 'color:#ff3b30;margin:0 0 10px 0;';
        const msg = document.createElement('p');
        msg.textContent = message; msg.style.cssText = 'margin:0 0 20px 0;color:#333;';
        const button = document.createElement('button');
        button.textContent = '我知道了'; button.style.cssText = `background:#007AFF;color:white;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:14px;`;
        button.onclick = () => { modal.remove(); };

        dialog.append(title, msg, button); modal.appendChild(dialog); document.body.appendChild(modal);
    };

    const monitorCopyMethods = () => {
        const originalExecCommand = document.execCommand;
        const originalWriteText = navigator.clipboard?.writeText;
        const originalWrite = navigator.clipboard?.write;

        document.execCommand = function (command, showUI, value) {
            if (command === 'copy') {
                const now = Date.now(), isRecentUserAction = now - lastUserClickTime < 1000;
                if (hasUserAction || isRecentUserAction) {
                    recordCopy('execCommand');
                    return originalExecCommand.apply(this, arguments);
                } else {
                    recordCopy('execCommand');
                    return askForCopyPermission().then((allowed) => {
                        return allowed ? originalExecCommand.apply(this, arguments) : false;
                    }).catch(() => false);
                }
            }
            return originalExecCommand.apply(this, arguments);
        };

        if (navigator.clipboard && originalWriteText) {
            navigator.clipboard.writeText = function (text) {
                const now = Date.now(), isRecentUserAction = now - lastUserClickTime < 1000;
                recordCopy('clipboard.writeText');
                if (hasUserAction || isRecentUserAction) return originalWriteText.call(this, text);
                return askForCopyPermission().then((allowed) => {
                    return allowed ? originalWriteText.call(this, text) : Promise.reject(new Error('用户拒绝复制'));
                });
            };
        }

        if (navigator.clipboard && originalWrite) {
            navigator.clipboard.write = function (data) {
                const now = Date.now(), isRecentUserAction = now - lastUserClickTime < 1000;
                recordCopy('clipboard.write');
                if (hasUserAction || isRecentUserAction) return originalWrite.call(this, data);
                return askForCopyPermission().then((allowed) => {
                    return allowed ? originalWrite.call(this, data) : Promise.reject(new Error('用户拒绝复制'));
                });
            };
        }

        document.addEventListener('copy', (e) => {
            const now = Date.now(), isRecentUserAction = now - lastUserClickTime < 1000;
            recordCopy('copy-event');
            if (hasUserAction || isRecentUserAction) return;
            e.preventDefault(); e.stopImmediatePropagation();
            askForCopyPermission().then((allowed) => {
                if (allowed && e.clipboardData) {
                    const selection = window.getSelection().toString();
                    if (selection) e.clipboardData.setData('text/plain', selection);
                }
            });
        }, { capture: true });
    };

    const askForCopyPermission = () => {
        return new Promise((resolve) => {
            if (document.querySelector('.copy-permission-dialog')) { resolve(false); return; }
            const modal = document.createElement('div');
            modal.className = 'copy-permission-dialog';
            modal.style.cssText = `position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);display:flex;align-items:center;justify-content:center;z-index:2147483647;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;`;
            
            const dialog = document.createElement('div');
            dialog.style.cssText = `background:white;padding:20px;border-radius:12px;max-width:80%;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,0.15);`;
            
            const title = document.createElement('h3');
            title.textContent = '复制确认'; title.style.margin = '0 0 10px 0';
            const message = document.createElement('p');
            message.textContent = '检测到自动复制操作，是否允许？'; message.style.margin = '0 0 20px 0';
            const buttonContainer = document.createElement('div');
            buttonContainer.style.cssText = 'display:flex;gap:10px;justify-content:center;';
            
            const allowButton = document.createElement('button');
            allowButton.textContent = '允许'; allowButton.style.cssText = `background:#34C759;color:white;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;`;
            const denyButton = document.createElement('button');
            denyButton.textContent = '拒绝'; denyButton.style.cssText = `background:#FF3B30;color:white;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;`;
            
            const cleanup = () => {
                modal.remove();
                setTimeout(() => { hasUserAction = false; }, 100);
            };
            allowButton.onclick = () => { cleanup(); resolve(true); };
            denyButton.onclick = () => { cleanup(); resolve(false); };
            
            buttonContainer.append(denyButton, allowButton);
            dialog.append(title, message, buttonContainer);
            modal.appendChild(dialog);
            document.body.appendChild(modal);
        });
    };

    const init = () => {
        setupUserActionDetection();
        monitorCopyMethods();
        console.log('复制行为监控器已启动');
    };

    if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init);
    else init();
})();