var originalShowHideGrpep = window.showhidegrpep;

var expandedButtons = new Set();

function getResetTime() {
    var now = new Date();
    var resetTime = new Date(now);
    resetTime.setHours(0, 0, 0, 0); 
    
    if (now > resetTime) {
        resetTime.setDate(resetTime.getDate() + 1);
    }
    
    return resetTime;
}

function forceResetDownloadCount() {
    var currentDate = new Date().toDateString();
    var lastResetDate = localStorage.getItem('lastResetDate');
    
    if (currentDate !== lastResetDate) {
        localStorage.setItem('lastResetDate', currentDate);
        
        var refreshUrl = window.location.href;
        if (refreshUrl.indexOf('?') > -1) {
            refreshUrl += '&_nocache=' + Date.now();
        } else {
            refreshUrl += '?_nocache=' + Date.now();
        }
        
        window.location.replace(refreshUrl);
    }
}

function c4dCopyToClipboard(text) {
    if (!text) return;
    if (navigator.clipboard) {
        navigator.clipboard.writeText(text).then(function () {
            c4dShowCopyTip('已复制: ' + text);
        }).catch(function (err) {
            fallbackCopyText(text);
        });
    } else {
        fallbackCopyText(text);
    }
    function fallbackCopyText(txt) {
        var input = document.createElement('textarea');
        input.value = txt;
        document.body.appendChild(input);
        input.select();
        try {
            document.execCommand('copy');
            c4dShowCopyTip('已复制: ' + txt);
        } catch (e) {
            alert('复制失败，请手动复制: ' + txt);
        }
        document.body.removeChild(input);
    }
}

function c4dShowCopyTip(msg) {
    if (window.__copyTipTimeout) clearTimeout(window.__copyTipTimeout);
    var tip = document.getElementById('c4d-copy-tip');
    if (!tip) {
        tip = document.createElement('div');
        tip.id = 'c4d-copy-tip';
        tip.style.cssText = "position:fixed;top:30%;left:50%;transform:translate(-50%,0);background:rgba(58,181,74,0.93);color:#fff;padding:12px 28px;border-radius:30px;z-index:9999;font-size:18px;text-align:center;box-shadow:0 3px 18px rgba(0,0,0,.13);";
        document.body.appendChild(tip);
    }
    tip.textContent = msg||'复制成功';
    tip.style.display = 'block';
    window.__copyTipTimeout = setTimeout(function () {
        tip.style.display = 'none';
    }, 1500);
}

function c4dProcessCopyElements(container) {
    if (!container || container.__c4dAlreadyProcessed) return;
    container.__c4dAlreadyProcessed = true;
    
    function recur(node) {
        if (node.nodeType === 3) {
            replaceNodeText(node);
        } else if (node.nodeType === 1 && !/(button|a|input|textarea|select)/i.test(node.tagName)) {
            var arr = Array.from(node.childNodes);
            arr.forEach(function (n) { recur(n); });
        }
    }

    function replaceNodeText(textNode) {
        var txt = textNode.nodeValue;
        var hasMatch = false;

        var patterns = [
            {reg: /解压密码[:：]?\s*([a-zA-Z0-9\-\._\u4e00-\u9fa5]+)/g, label:"解压密码"},
            {reg: /提取码[:：]?\s*([a-zA-Z0-9\-_]{3,})/g, label:"提取码"},
            {reg: /密码[:：]?\s*([a-zA-Z0-9\-_]{3,})/g, label:"密码"},
        ];

        patterns.forEach(function(item) {
            txt = txt.replace(item.reg, function(all, code) {
                hasMatch = true;
                return item.label + '：<span class="c4d-copy-code" data-code="' + code + '" title="点击复制">' + code + '</span>';
            });
        });

        if (hasMatch) {
            var tmp = document.createElement('span');
            tmp.innerHTML = txt;
            textNode.parentNode.replaceChild(tmp, textNode);
        }
    }

    recur(container);

var allLinks = container.querySelectorAll('a[href*="pan.baidu.com"], a[href*="pan.quark.cn"], a[href*="www.123pan.com"], a[href*="cloud.189.cn"]');
allLinks.forEach(function(link) {
    var code = null;
    var linkContainer = link.parentNode;
    
    var walker = document.createTreeWalker(
        linkContainer,
        NodeFilter.SHOW_TEXT,
        null,
        false
    );
    
    var foundLink = false;
    var currentNode;
    
    while (currentNode = walker.nextNode()) {
        if (!foundLink && currentNode.parentNode.contains(link)) {
            foundLink = true;
            continue;
        }
        
        if (foundLink) {
            var text = currentNode.textContent;
            if (text.includes('\n') || text.includes('http')) {
                var beforeNewline = text.split('\n')[0];
                var match = beforeNewline.match(/(?:密码|提取码)[:：]?\s*([a-zA-Z0-9\-_]{3,})/);
                if (match) {
                    code = match[1];
                }
                break;
            }
            
            var match = text.match(/(?:密码|提取码)[:：]?\s*([a-zA-Z0-9\-_]{3,})/);
            if (match) {
                code = match[1];
                break;
            }
        }
    }

    if (!code) {
        var nextSibling = link.nextSibling;
        var searchText = '';
        var maxSearch = 5; 
        var searchCount = 0;
        
        while (nextSibling && searchCount < maxSearch) {
            if (nextSibling.nodeType === 3) { 
                searchText += nextSibling.textContent;
            } else if (nextSibling.nodeType === 1) {
                searchText += nextSibling.textContent || nextSibling.innerText || '';
            }
            
            if (searchText.includes('http') && searchText.indexOf('http') > 0) {
                searchText = searchText.substring(0, searchText.indexOf('http'));
                break;
            }
            
            nextSibling = nextSibling.nextSibling;
            searchCount++;
        }
        
        var match = searchText.match(/(?:密码|提取码)[:：]?\s*([a-zA-Z0-9\-_]{3,})/);
        if (match) {
            code = match[1];
        }
    }
    
    if (code) {
        link.classList.add('c4d-copy-link');
        link.setAttribute('data-copy-code', code);
        link.setAttribute('title', '点击复制提取码: ' + code);
        console.log('链接匹配成功:', link.href, '-> 复制码:', code);
    }
});

    container.addEventListener('click', function(e){
        var span = e.target.closest('.c4d-copy-code');
        if (span && span.dataset.code) {
            e.preventDefault();
            e.stopPropagation();
            c4dCopyToClipboard(span.dataset.code);
            return;
        }
        
        var link = e.target.closest('.c4d-copy-link');
        if (link && link.dataset.copyCode) {
            setTimeout(function() {
                c4dCopyToClipboard(link.dataset.copyCode);
            }, 100);
            return;
        }
    });
}

function c4dAutoBindCopyToAll() {
    var all = document.querySelectorAll('.c4d-hidden-content.active');
    for(var i=0;i<all.length;i++) {
        c4dProcessCopyElements(all[i]);
    }
}

function encryptContent(content) {
    if (!content) return '';
    try {
        var uid = "0";
        var salt = "hide@" + window.location.hostname;
        var key = uid + salt;
        
        var encoded = encodeURIComponent(content);
        var fingerprint = key.split('').reduce(function(a, b) { 
            return a + b.charCodeAt(0);
        }, 0);
        
        var secureContent = fingerprint + "|" + encoded;
        return window.btoa(secureContent);
    } catch (e) {
        console.error("加密失败:", e);
        return '';
    }
}

function decryptContent(encryptedContent) {
    if (!encryptedContent) return null;
    try {
        var decoded = window.atob(encryptedContent);
        
        var parts = decoded.split('|');
        if (parts.length !== 2) return null;
        
        var storedFingerprint = parseInt(parts[0], 10);
        var content = parts[1];
        
        var uid = "0";
        var salt = "hide@" + window.location.hostname;
        var key = uid + salt;
        var currentFingerprint = key.split('').reduce(function(a, b) { 
            return a + b.charCodeAt(0);
        }, 0);
        
        if (storedFingerprint !== currentFingerprint) {
            console.warn("安全警告: 内容指纹不匹配");
            return null;
        }
        
        return decodeURIComponent(content);
    } catch (e) {
        console.error("解密失败:", e);
        return null;
    }
}

function setCookie(name, value, hours) {
    var expires = "";
    if (hours) {
        var date = new Date();
        date.setTime(date.getTime() + (hours * 60 * 60 * 1000));
        expires = "; expires=" + date.toUTCString();
    }
    document.cookie = name + "=" + encodeURIComponent(value) + expires + "; path=/; SameSite=Strict";
}

function getCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return decodeURIComponent(c.substring(nameEQ.length, c.length));
    }
    return null;
}

function deleteCookie(name) {
    setCookie(name, "", -1);
}

function getDownloadedPosts() {
    var downloadedData = getCookie("hide_downloaded_posts");
    var result = {};
    
    if (downloadedData) {
        try {
            result = JSON.parse(downloadedData);
            
            var oneDayAgo = Date.now() - (24 * 60 * 60 * 1000);
            var hasChanges = false;
            
            for (var key in result) {
                if (result[key].time < oneDayAgo) {
                    delete result[key];
                    hasChanges = true;
                }
            }

            if (hasChanges) {
                setCookie("hide_downloaded_posts", JSON.stringify(result), 24);
            }
        } catch (e) {
            console.error("解析下载记录失败:", e);
            result = {};
        }
    }
    
    return result;
}

function handleDownloadClick(event) {
    var downloadBtn = this;
    var randomId = downloadBtn.getAttribute('data-randomid');

    if (expandedButtons.has(randomId)) {
        var contentContainer = document.getElementById('c4d-content-container-' + randomId);
        if (contentContainer && contentContainer.classList.contains('active')) {
            var clickedInsideContent = event.target === contentContainer || contentContainer.contains(event.target);
            if (clickedInsideContent) {
                console.log('点击在内容区域内，允许文本选择');
                return;
            }
        }
    }

    if (downloadBtn.classList.contains('processing')) {
        event.preventDefault();
        return;
    }

    event.preventDefault();
    event.stopPropagation();
    
    downloadBtn.classList.add('processing');

    console.log('下载按钮点击:', {
        'hideType': downloadBtn.getAttribute('data-hide-type'),
        'stars': downloadBtn.getAttribute('data-stars'),
        'groupTitle': downloadBtn.getAttribute('data-group-title'),
        'randomId': randomId
    });
    
    try {
        var tid = downloadBtn.getAttribute('data-tid');

        if (isRecentlyDownloaded(tid, randomId)) {
            c4dLoadHiddenContent(downloadBtn, downloadBtn.getAttribute('data-viewurl'), true);
        } else {
            c4dCheckAccess(downloadBtn);
        }
    } catch (e) {
        console.error("下载处理出错:", e);
    } finally {
        setTimeout(function() {
            downloadBtn.classList.remove('processing');
        }, 500);
    }
}

function addToDownloadHistory(tid, randomId, content) {
    if (!tid || !randomId) return;
    
    try {
        var storageKey = tid + "_" + randomId;
        var cleanContent = sanitizeContent(content);
        var encryptedContent = encryptContent(cleanContent);
        
        var downloadedPosts = getDownloadedPosts();
        downloadedPosts[storageKey] = {
            time: Date.now(),
            content: encryptedContent
        };
        setCookie("hide_downloaded_posts", JSON.stringify(downloadedPosts), 24);
        console.log("安全保存到下载历史:", storageKey);
    } catch (e) {
        console.error("保存下载记录失败:", e);
    }
}

function isRecentlyDownloaded(tid, randomId) {
    var downloadedPosts = getDownloadedPosts();
    var storageKey = tid + "_" + randomId;
    return downloadedPosts[storageKey] !== undefined;
}

function getDownloadedContent(tid, randomId) {
    var downloadedPosts = getDownloadedPosts();
    var storageKey = tid + "_" + randomId;
    if (downloadedPosts[storageKey] && downloadedPosts[storageKey].content) {
        var decryptedContent = decryptContent(downloadedPosts[storageKey].content);
        if (decryptedContent) {
            return decryptedContent;
        }
        console.warn("内容解密失败或验证未通过:", storageKey);
        return null;
    }
    return null;
}

function sanitizeContent(content) {
    if (!content) return "";
    
    try {
        var sanitized = content.replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, '');
        if (sanitized.length > 3000) {
            console.warn("内容过大，将被裁剪", sanitized.length);
            sanitized = sanitized.substring(0, 3000) + '... [内容已截断]';
        }
        return sanitized;
    } catch (e) {
        console.error("内容净化失败:", e);
        return content;
    }
}

function updateDownloadLimitMessage(maxDownloads, dayviews) {
    var now = new Date();
    var resetTime = getResetTime();
    
    var timeUntilReset = resetTime - now;
    var hoursLeft = Math.floor(timeUntilReset / (1000 * 60 * 60));
    var minutesLeft = Math.floor((timeUntilReset % (1000 * 60 * 60)) / (1000 * 60));
    
    return '<div class="c4d-limit-message">' +
           '<div class="c4d-limit-icon">⏰</div>' +
           '<h3>今日下载次数已达到上限</h3>' +
           '<p>您今日的下载次数已达到上限(' + maxDownloads + '次)，' +
           '将在' + hoursLeft + '小时' + minutesLeft + '分钟后重置</p>' +
           '<p style="font-size:14px;color:#888;">（每天0:00自动重置下载次数）</p>' +
           '<a href="plugin.php?id=liangzai_mqyvip" target="_blank" ' +
           'class="c4d-limit-upgrade">升级会员增加下载次数</a>' +
           '</div>';
}

function c4dCheckAccess(downloadBtn) {
    if (!downloadBtn) return;
    
    var randomId = downloadBtn.getAttribute('data-randomid');
    var contentContainer = document.getElementById('c4d-content-container-' + randomId);
    var downloadIcon = downloadBtn.querySelector('.c4d-download-icon');
    var tid = downloadBtn.getAttribute('data-tid');
    var hideType = downloadBtn.getAttribute('data-hide-type');
    var requiredStars = downloadBtn.getAttribute('data-stars');
    
    console.log('检查访问权限:', {
        'hideType': hideType,
        'stars': requiredStars,
        'isLoggedIn': false,
        'userLevel': "0"
    });
    
    var isLoggedIn = false;
    
    if (!isLoggedIn) {
        downloadIcon.style.display = 'none';
        contentContainer.innerHTML = `
            <div class="c4d-login-message">
                <div class="c4d-limit-icon">🔒</div>
                <h3>请先登录</h3>
                <p>您需要登录后才能下载此资源</p>
                <a href="member.php?mod=logging&amp;action=login&amp;referer=${encodeURIComponent('forum.php?mod=viewthread&amp;tid='+tid)}" 
                   onclick="showWindow('login', this.href);return false;" class="c4d-login-button">立即登录</a>
            </div>`;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        downloadBtn.classList.add('no-permission');
        expandedButtons.add(randomId);
        return;
    }

    if (hideType === 'sell') {
        var userLevel = "0";
        console.log('处理sell标签:', {
            'requiredStars': requiredStars,
            'userLevel': userLevel
        });
        
        if (parseInt(userLevel) >= parseInt(requiredStars)) {
            c4dTriggerDownload(downloadBtn, false);
            return;
        }
        
        downloadIcon.style.display = 'none';
        contentContainer.innerHTML = `
            <div class="c4d-level-message">
                <h3>等级不足，无法下载！</h3>
                <div class="c4d-level-comparison">
                    <div class="c4d-level-item">
                        <span class="c4d-level-label">下载等级</span>
                        <strong class="c4d-level-value">${requiredStars == 1 ? "初级会员" : "高级会员"}</strong>
                    </div>
                    <div class="c4d-level-arrow">
                        <span style="font-size: 24px;">→</span>
                    </div>
                    <div class="c4d-level-item">
                        <span class="c4d-level-label">我的等级</span>
                        <strong class="c4d-level-value c4d-my-level">游客</strong>
                    </div>
                </div>
                <a href="plugin.php?id=liangzai_mqyvip" target="_blank" class="c4d-limit-upgrade">立即升级会员</a>
                <p class="c4d-upgrade-tip">赞助会员后即可获得下载权限</p>
            </div>`;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        downloadBtn.classList.add('no-permission');
        expandedButtons.add(randomId);
        return;
    }
    
    var isFreeDownload = (hideType === 'num' || hideType === 'empty');
    var isUserGroupTag = (hideType === 't');
    
    if (isFreeDownload && isLoggedIn) {
        c4dTriggerDownload(downloadBtn, false);
        return;
    }
    
    if (isUserGroupTag) {
        var userLevel = "0";
        if (parseInt(userLevel) >= parseInt(requiredStars)) {
            c4dTriggerDownload(downloadBtn, false);
            return;
        }
        
        downloadIcon.style.display = 'none';
        contentContainer.innerHTML = `
            <div class="c4d-level-message">
                <h3>等级不足，无法下载！</h3>
                <div class="c4d-level-comparison">
                    <div class="c4d-level-item">
                        <span class="c4d-level-label">下载等级</span>
                        <strong class="c4d-level-value"></strong>
                    </div>
                    <div class="c4d-level-arrow">
                        <span style="font-size: 24px;">→</span>
                    </div>
                    <div class="c4d-level-item">
                        <span class="c4d-level-label">我的等级</span>
                        <strong class="c4d-level-value c4d-my-level">游客</strong>
                    </div>
                </div>
                <a href="plugin.php?id=liangzai_mqyvip" target="_blank" class="c4d-limit-upgrade">立即升级会员</a>
                <p class="c4d-upgrade-tip">赞助会员后即可获得下载权限</p>
            </div>`;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        downloadBtn.classList.add('no-permission');
        expandedButtons.add(randomId);
    }
}

function c4dLoadHiddenContent(downloadBtn, url, skipCountCheck) {
    var randomId = downloadBtn.getAttribute('data-randomid');
    console.log("加载隐藏内容:", url, "跳过计数:", skipCountCheck, "随机ID:", randomId);
    
    if (downloadBtn.classList.contains('expanded')) {
        return;
    }
    
    var contentContainer = document.getElementById('c4d-content-container-' + randomId);
    var downloadIcon = downloadBtn.querySelector('.c4d-download-icon');
    var tid = downloadBtn.getAttribute('data-tid');
    
    var cachedContent = getDownloadedContent(tid, randomId);
    if (cachedContent && skipCountCheck) {
        downloadIcon.style.display = 'none';
        contentContainer.innerHTML = cachedContent;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        expandedButtons.add(randomId);
        enableTextSelection(contentContainer);
        c4dProcessCopyElements(contentContainer);
        console.log("从缓存加载内容");
        return;
    }
    
    downloadIcon.style.display = 'none';
    contentContainer.innerHTML = '<div class="c4d-loading" style="text-align:center;padding:20px;">加载中，请稍候...</div>';
    contentContainer.classList.add('active');
    
    var xhr = new XMLHttpRequest();
    var finalUrl = url;
    
    if (skipCountCheck) {
        finalUrl += (finalUrl.indexOf('?') !== -1 ? '&' : '?') + 'skipcountcheck=1';
    }
    finalUrl += (finalUrl.indexOf('?') !== -1 ? '&' : '?') + 'isrealview=1&firstview=1&_=' + Date.now();
    
    console.log("请求URL:", finalUrl);
    
    xhr.open('GET', finalUrl, true);

    xhr.timeout = 15000; 
    
    xhr.onreadystatechange = function() {
        console.log("XHR状态变化:", xhr.readyState, xhr.status);
        if (xhr.readyState === 4) {
            if (xhr.status === 200) {
                var responseText = xhr.responseText;
                console.log("请求成功，响应长度:", responseText.length);

                if (!responseText || responseText.trim().length < 10) {
                    contentContainer.innerHTML = `
                        <div class="c4d-error-message">
                            <div class="c4d-limit-icon">⚠️</div>
                            <h3>返回内容为空</h3>
                            <p>服务器返回了空内容，请刷新页面重试</p>
                        </div>
                    `;
                    downloadBtn.classList.add('expanded');
                    expandedButtons.add(randomId);
                    return;
                }
                
                if (responseText.indexOf('dsvue_hidegrpep_noviews') !== -1 ||
                    responseText.indexOf('今日可查看已达') !== -1 ||
                    responseText.indexOf('下载次数') !== -1) {
                    
                    contentContainer.innerHTML = updateDownloadLimitMessage(
                        0,
                        0
                    );
                    downloadBtn.classList.add('no-permission');
                } else {
                    try {
                        var parser = new DOMParser();
                        var doc = parser.parseFromString(responseText, 'text/html');
                        var content = doc.querySelector('.showhide');
                        
                        if (content) {
                            contentContainer.innerHTML = content.innerHTML;
                            var successMessage = document.createElement('div');
                            successMessage.className = 'c4d-success-message';
                            successMessage.textContent = '✓ 下载信息';
                            contentContainer.insertBefore(successMessage, contentContainer.firstChild);
                            addToDownloadHistory(tid, randomId, contentContainer.innerHTML);
                        } else {
                            console.log("未找到.showhide元素，显示原始内容");
                            var cleanedContent = responseText.replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, '');
                            contentContainer.innerHTML = cleanedContent;
                            
                            if (cleanedContent.length < 100) {
                                contentContainer.innerHTML = `
                                    <div class="c4d-limit-message">
                                        <div class="c4d-limit-icon">⚠️</div>
                                        <h3>内容加载失败</h3>
                                        <p>请刷新页面后重试</p>
                                        <p style="font-size:13px;color:#999;">错误原因: 内容过短</p>
                                    </div>
                                `;
                            } else {
                                addToDownloadHistory(tid, randomId, contentContainer.innerHTML);
                            }
                        }

                        enableTextSelection(contentContainer);
                        c4dProcessCopyElements(contentContainer);
                        
                    } catch (parseError) {
                        console.error("解析响应内容失败:", parseError);
                        contentContainer.innerHTML = `
                            <div class="c4d-error-message">
                                <div class="c4d-limit-icon">❌</div>
                                <h3>解析失败</h3>
                                <p>解析返回内容时出错，请刷新页面重试</p>
                                <p style="font-size:13px;color:#999;">错误信息: ${parseError.message}</p>
                            </div>
                        `;
                    }
                }
            } else {
                contentContainer.innerHTML = `
                    <div class="c4d-error-message">
                        <div class="c4d-limit-icon">❌</div>
                        <h3>加载失败</h3>
                        <p>服务器返回错误 (${xhr.status})，请稍后再试</p>
                    </div>
                `;
            }
            
            downloadBtn.classList.add('expanded');
            expandedButtons.add(randomId);
        }
    };
    
    xhr.ontimeout = function() {
        console.error("请求超时");
        contentContainer.innerHTML = `
            <div class="c4d-error-message">
                <div class="c4d-limit-icon">⏱️</div>
                <h3>请求超时</h3>
                <p>服务器响应超时，请稍后再试</p>
            </div>
        `;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        expandedButtons.add(randomId);
    };
    
    xhr.onerror = function(e) {
        console.error("请求错误:", e);
        contentContainer.innerHTML = `
            <div class="c4d-error-message">
                <div class="c4d-limit-icon">❌</div>
                <h3>网络错误</h3>
                <p>请检查您的网络连接后重试</p>
            </div>
        `;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        expandedButtons.add(randomId);
    };
    
    try {
        xhr.send();
    } catch (e) {
        console.error("发送请求失败:", e);
        contentContainer.innerHTML = `
            <div class="c4d-error-message">
                <div class="c4d-limit-icon">❌</div>
                <h3>请求失败</h3>
                <p>发送请求时出错: ${e.message}</p>
            </div>
        `;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        expandedButtons.add(randomId);
    }
}

function enableTextSelection(contentContainer) {
    if (!contentContainer) return;

    contentContainer.style.userSelect = 'text';
    contentContainer.style.webkitUserSelect = 'text';
    contentContainer.style.mozUserSelect = 'text';
    contentContainer.style.msUserSelect = 'text';

    var allElements = contentContainer.querySelectorAll('*');
    for (var i = 0; i < allElements.length; i++) {
        var element = allElements[i];
        element.style.userSelect = 'text';
        element.style.webkitUserSelect = 'text';
        element.style.mozUserSelect = 'text';
        element.style.msUserSelect = 'text';
        element.onmousedown = null;
        element.onselectstart = null;
        element.ondragstart = null;
    }
    
    console.log("已启用文本选择功能");
}

function c4dTriggerDownload(downloadBtn, skipCountCheck) {
    var randomId = downloadBtn.getAttribute('data-randomid');
    console.log("触发下载函数，跳过计数:", skipCountCheck, "随机ID:", randomId);
    
    if (downloadBtn.classList.contains('expanded')) {
        return;
    }

    var downloadIcon = downloadBtn.querySelector('.c4d-download-icon');
    var contentContainer = document.getElementById('c4d-content-container-' + randomId);
    var tid = downloadBtn.getAttribute('data-tid');
    var hideType = downloadBtn.getAttribute('data-hide-type');
    var requiredStars = downloadBtn.getAttribute('data-stars');

    var isLoggedIn = false;
    var isAuthor = false;
    var isAdmin = false;
    var isModerator = false;
    var userLevel = "0";

    skipCountCheck = isAuthor;

    if (!isAuthor) {
        var dayviews = 0;
        var maxDownloads = 0;

        if (maxDownloads > 0 && dayviews >= maxDownloads) {
            downloadIcon.style.display = 'none';
            contentContainer.innerHTML = updateDownloadLimitMessage(maxDownloads, dayviews);
            contentContainer.classList.add('active');
            downloadBtn.classList.add('expanded', 'no-permission');
            expandedButtons.add(randomId);
            return;
        }
    }

    var isFreeDownload = (hideType === 'num' || hideType === 'empty');
    var isUserGroupTag = (hideType === 't');
    var isSellTag = (hideType === 'sell');

    if (isFreeDownload) {
        downloadIcon.classList.add('c4d-download-animation');
        c4dLoadHiddenContent(downloadBtn, downloadBtn.getAttribute('data-viewurl'), skipCountCheck);
        return;
    }

    if (isUserGroupTag || isSellTag) {
        if (parseInt(userLevel) >= parseInt(requiredStars) || isAuthor) {
            downloadIcon.classList.add('c4d-download-animation');
            c4dLoadHiddenContent(downloadBtn, downloadBtn.getAttribute('data-viewurl'), skipCountCheck);
        } else {
            c4dCheckAccess(downloadBtn);
        }
    }
}

function c4dProcessExistingContent(downloadBtn) {
    if (!downloadBtn) return;
    
    var randomId = downloadBtn.getAttribute('data-randomid');
    var tid = downloadBtn.getAttribute('data-tid');
    var contentContainer = document.getElementById('c4d-content-container-' + randomId);
    var downloadIcon = downloadBtn.querySelector('.c4d-download-icon');
    var hideType = downloadBtn.getAttribute('data-hide-type');
    var requiredStars = downloadBtn.getAttribute('data-stars');
    
    var isAuthor = false;
    var isAdmin = false;
    var isModerator = false;
    var userLevel = "0";
    
    var contentFromReply = document.querySelector("#" + randomId + " .showhide");
    if (contentFromReply && contentFromReply.parentElement) {
        downloadIcon.style.display = 'none';
        contentContainer.innerHTML = contentFromReply.innerHTML;
        contentContainer.classList.add('active');
        downloadBtn.classList.add('expanded');
        addToDownloadHistory(tid, randomId, contentContainer.innerHTML);
        expandedButtons.add(randomId);
        enableTextSelection(contentContainer);
        c4dProcessCopyElements(contentContainer);
        return;
    }
    
    if (isRecentlyDownloaded(tid, randomId)) {
        var isFreeDownload = (hideType === 'num' || hideType === 'empty');
        var isUserGroupTag = (hideType === 't');
        var isSellTag = (hideType === 'sell');
        var skipCountCheck = isAuthor;
        
        if (isFreeDownload && false) {
            var cachedContent = getDownloadedContent(tid, randomId);
            if (cachedContent) {
                downloadIcon.style.display = 'none';
                contentContainer.innerHTML = cachedContent;
                contentContainer.classList.add('active');
                downloadBtn.classList.add('expanded');
                expandedButtons.add(randomId);
                enableTextSelection(contentContainer);
                c4dProcessCopyElements(contentContainer);
            } else {
                c4dLoadHiddenContent(downloadBtn, downloadBtn.getAttribute('data-viewurl'), skipCountCheck);
            }
            return;
        }
        
        if (isUserGroupTag || isSellTag) {
            if (isAuthor || parseInt(userLevel) >= parseInt(requiredStars)) {
                var cachedContent = getDownloadedContent(tid, randomId);
                if (cachedContent) {
                    downloadIcon.style.display = 'none';
                    contentContainer.innerHTML = cachedContent;
                    contentContainer.classList.add('active');
                    downloadBtn.classList.add('expanded');
                    expandedButtons.add(randomId);
                    enableTextSelection(contentContainer);
                    c4dProcessCopyElements(contentContainer);
                } else {
                    c4dLoadHiddenContent(downloadBtn, downloadBtn.getAttribute('data-viewurl'), skipCountCheck);
                }
            }
        }
    }
}

var hasRefreshedForReset = false;

function checkResetTimeAndRefresh() {
    var now = new Date();
    var resetTime = getResetTime();

    var timeUntilReset = resetTime - now;

    if (Math.abs(timeUntilReset) <= 30000) {
        var lastRefresh = localStorage.getItem('lastResetRefresh');
        var currentTime = Date.now();

        if (!lastRefresh || (currentTime - lastRefresh > 60000)) {
            console.log("到达下载次数重置时间，刷新页面");
            localStorage.setItem('lastResetRefresh', currentTime);

            var refreshUrl = window.location.href;
            if (refreshUrl.indexOf('?') > -1) {
                refreshUrl += '&_reset=' + Date.now();
            } else {
                refreshUrl += '?_reset=' + Date.now();
            }

            window.location.replace(refreshUrl);
            return;
        }
    }

    var nextCheck = 60000;
    if (timeUntilReset > 0 && timeUntilReset < 60000) {
        nextCheck = 5000;
    } else if (timeUntilReset > 0 && timeUntilReset < 300000) {
        nextCheck = 15000;
    }
    
    setTimeout(checkResetTimeAndRefresh, nextCheck);
}

document.addEventListener('selectstart', function(e) {

    var target = e.target;
    var contentContainer = target.closest('.c4d-hidden-content.active');
    if (contentContainer) {
        e.stopPropagation();
        return true; 
    }
});

document.addEventListener('mousedown', function(e) {
    var target = e.target;
    var contentContainer = target.closest('.c4d-hidden-content.active');
    if (contentContainer) {
        e.stopPropagation();
        return true; 
    }
});


document.addEventListener('DOMContentLoaded', function() {

    forceResetDownloadCount();
    console.log("页面加载完成，初始化下载功能");
    
    function initializeAllButtons() {
        var downloadBtns = document.querySelectorAll('[id^="c4d-download-btn-"]');
        console.log("找到下载按钮数量:", downloadBtns.length);
        
        downloadBtns.forEach(function(btn) {
            var randomId = btn.getAttribute('data-randomid');

            if (expandedButtons.has(randomId)) {
                return;
            }
            
            btn.removeEventListener('click', handleDownloadClick);
            btn.addEventListener('click', function(event) {
                if(event.target.tagName.toLowerCase() === 'a' || event.target.closest('a')) {
                    return; 
                }

                handleDownloadClick.call(btn, event);
            });

            c4dProcessExistingContent(btn);
        });
        return downloadBtns.length;
    }
    
    var btnCount = initializeAllButtons();
    
    var buttonBindInterval = setInterval(function() {
        var newCount = initializeAllButtons();
        if (newCount > btnCount) {
            console.log("发现新按钮:", newCount);
            btnCount = newCount;
        }
    }, 500);
    
    setTimeout(function() {
        clearInterval(buttonBindInterval);
        setInterval(initializeAllButtons, 3000);
    }, 10000);
    
    if (typeof showError === 'function') {
        var originalShowError = window.showError;
        window.showError = function(msg) {
            if (msg && (msg.indexOf('dsvue_hidegrpep_noviews') !== -1 || 
                       msg.indexOf('今日可查看已达') !== -1 ||
                       msg.indexOf('下载次数') !== -1)) {
                return false;
            }
            return originalShowError.apply(this, arguments);
        };
    }
    
    fixAdminAndModeratorContentDisplay();

    var lastRefreshTime = localStorage.getItem('resetRefreshTime');
    if (lastRefreshTime && (Date.now() - lastRefreshTime < 60000)) {
        hasRefreshedForReset = true;
        setTimeout(function() {
            hasRefreshedForReset = false;
        }, 60000);
    }

    checkResetTimeAndRefresh();

    setTimeout(function() {
        console.log('检查sell标签按钮...');
        var sellButtons = document.querySelectorAll('[data-hide-type="sell"]');
        console.log('找到sell按钮数量:', sellButtons.length);
        
        sellButtons.forEach(function(btn) {
            btn._hasClickEvent = true;
            btn.addEventListener('click', function(e) {
                console.log('Sell标签按钮点击处理');
                handleDownloadClick.call(this, e);
            });

            btn.classList.add('c4d-sell-button');
        });
    }, 1000);

    setTimeout(c4dAutoBindCopyToAll, 200);
});

setInterval(function() {
    var expandedButtons = document.querySelectorAll('.c4d-download-button.expanded');
    expandedButtons.forEach(function(btn) {
        var tid = btn.getAttribute('data-tid');
        var randomId = btn.getAttribute('data-randomid');
        var contentContainer = document.getElementById('c4d-content-container-' + randomId);
        
        if (contentContainer && contentContainer.innerHTML.length > 100) {
            addToDownloadHistory(tid, randomId, contentContainer.innerHTML);
        }
    });
}, 60000);

function tryRestoreAllCachedContent() {
    var downloadedPosts = getDownloadedPosts();
    var downloadBtns = document.querySelectorAll('[id^="c4d-download-btn-"]');
    
    downloadBtns.forEach(function(btn) {
        if (!btn.classList.contains('expanded')) {
            var tid = btn.getAttribute('data-tid');
            var randomId = btn.getAttribute('data-randomid');
            var storageKey = tid + "_" + randomId;
            
            if (downloadedPosts[storageKey]) {
                c4dProcessExistingContent(btn);
            }
        }
    });
}

setTimeout(tryRestoreAllCachedContent, 100);
setTimeout(tryRestoreAllCachedContent, 1000);

setInterval(function() {
    try {
        var cookieData = getCookie("hide_downloaded_posts");
        if (cookieData) {
            var data = JSON.parse(cookieData);
            for (var key in data) {
                var content = data[key].content;
                if (content && !content.match(/^[A-Za-z0-9+/=]+$/)) {
                    console.warn("检测到cookie数据可能被篡改，重置存储");
                    setCookie("hide_downloaded_posts", "{}", 24);
                    break;
                }
            }
        }
    } catch (e) {
        console.error("Cookie完整性检查失败:", e);
    }
}, 300000);

function fixAdminAndModeratorContentDisplay() {
    var allPosts = document.querySelectorAll('.t_fsz, .pcb, .postmessage');
    
    allPosts.forEach(function(postContainer) {
        var allHideContents = [];

        var showhideEls = postContainer.querySelectorAll('.showhide:not(.c4d-hidden-content .showhide)');
        showhideEls.forEach(function(el) {
            allHideContents.push({
                element: el,
                type: 'hide'
            });
        });

        var downloadContainers = postContainer.querySelectorAll('.c4d-download-container');

        if (downloadContainers.length > showhideEls.length) {
            var possibleSellContents = postContainer.querySelectorAll('div:not(.c4d-hidden-content):not(.c4d-download-container) > div:has(h4:contains("' + lang('forum/template', 'post_hide') + '"))');
            
            if (possibleSellContents.length === 0) {
                possibleSellContents = postContainer.querySelectorAll('div:not(.showhide):not(.c4d-hidden-content) h4:contains("' + lang('forum/template', 'post_hide') + '")');
                possibleSellContents.forEach(function(el) {
                    var parent = el.closest('div');
                    if (parent && !allHideContents.some(item => item.element === parent)) {
                        allHideContents.push({
                            element: parent,
                            type: 'sell'
                        });
                    }
                });
            } else {
                possibleSellContents.forEach(function(el) {
                    if (!allHideContents.some(item => item.element === el)) {
                        allHideContents.push({
                            element: el,
                            type: 'sell'
                        });
                    }
                });
            }
        }

        downloadContainers.forEach(function(container, index) {
            var downloadButton = container.querySelector('.c4d-download-button');
            if (!downloadButton) return;
            
            var hideType = downloadButton.getAttribute('data-hide-type');
            var contentContainer = container.querySelector('.c4d-hidden-content');
            var downloadIcon = container.querySelector('.c4d-download-icon');
            var randomId = downloadButton.getAttribute('data-randomid');
            
            if (!contentContainer || !downloadIcon) return;

            var contentMatch = null;
            
            if (index < allHideContents.length) {
                contentMatch = allHideContents[index].element;
            } else {
                return;
            }
            
            if (contentMatch) {
                contentContainer.innerHTML = contentMatch.innerHTML;
                contentContainer.classList.add('active');
                downloadIcon.style.display = 'none';
                downloadButton.classList.add('expanded');
                contentMatch.style.display = 'none';
                expandedButtons.add(randomId);
                enableTextSelection(contentContainer);
                c4dProcessCopyElements(contentContainer);
                if (hideType === 'sell') {
                    downloadButton.style.removeProperty('border');

                    var header = downloadButton.querySelector('.c4d-download-header');
                    if (header) {
                        header.style.backgroundColor = 'linear-gradient(135deg, #f5b041, #e67e22)';
                    }
                }
            }
        });
    });

    var emptyDownloadContainers = document.querySelectorAll('.c4d-download-container:not(.expanded)');
    var remainingHideContents = document.querySelectorAll('.showhide:not([style*="display: none"])');
    
    var count = Math.min(emptyDownloadContainers.length, remainingHideContents.length);
    for (var i = 0; i < count; i++) {
        var container = emptyDownloadContainers[i];
        var content = remainingHideContents[i];
        
        var contentContainer = container.querySelector('.c4d-hidden-content');
        var downloadIcon = container.querySelector('.c4d-download-icon');
        var downloadButton = container.querySelector('.c4d-download-button');
        
        if (!contentContainer || !downloadIcon || !downloadButton) continue;
        
        var randomId = downloadButton.getAttribute('data-randomid');
        
        contentContainer.innerHTML = content.innerHTML;
        contentContainer.classList.add('active');
        downloadIcon.style.display = 'none';
        downloadButton.classList.add('expanded');
        content.style.display = 'none';
        expandedButtons.add(randomId);
        enableTextSelection(contentContainer);
        c4dProcessCopyElements(contentContainer);
    }
}

function findHideContents() {
    var allContainers = document.querySelectorAll('.c4d-download-container');
    console.log('找到下载容器:', allContainers.length);

    var allContents = document.querySelectorAll('.showhide');
    console.log('找到隐藏内容:', allContents.length);

    var sellContents = [];
    var allDivs = document.querySelectorAll('div');
    allDivs.forEach(function(div) {
        var h4 = div.querySelector('h4');
        if (h4 && h4.textContent.includes('隐藏内容') && !div.classList.contains('showhide')) {
            sellContents.push(div);
        }
    });
    console.log('找到可能的sell内容:', sellContents.length);

    var index = 0;
    allContainers.forEach(function(container) {
        if (index < allContents.length) {
            var contentContainer = container.querySelector('.c4d-hidden-content');
            var downloadIcon = container.querySelector('.c4d-download-icon');
            var downloadButton = container.querySelector('.c4d-download-button');
            
            if (!contentContainer || !downloadIcon || !downloadButton) return;
            
            var randomId = downloadButton.getAttribute('data-randomid');
            
            contentContainer.innerHTML = allContents[index].innerHTML;
            contentContainer.classList.add('active');
            downloadIcon.style.display = 'none';
            downloadButton.classList.add('expanded');
            downloadButton.style.removeProperty('border');
            allContents[index].style.display = 'none';
            expandedButtons.add(randomId);
            enableTextSelection(contentContainer);
            c4dProcessCopyElements(contentContainer);
            
            index++;
        }
    });

    sellContents.forEach(function(content) {
        if (index < allContainers.length) {
            var container = allContainers[index];
            var contentContainer = container.querySelector('.c4d-hidden-content');
            var downloadIcon = container.querySelector('.c4d-download-icon');
            var downloadButton = container.querySelector('.c4d-download-button');
            
            if (!contentContainer || !downloadIcon || !downloadButton) return;
            
            var randomId = downloadButton.getAttribute('data-randomid');
            
            contentContainer.innerHTML = content.innerHTML;
            contentContainer.classList.add('active');
            downloadIcon.style.display = 'none';
            downloadButton.classList.add('expanded');
            downloadButton.style.removeProperty('border');
            content.style.display = 'none';
            expandedButtons.add(randomId);
            enableTextSelection(contentContainer);
            c4dProcessCopyElements(contentContainer);
            
            index++;
        }
    });
    
    return '处理了 ' + index + ' 个隐藏内容';
}

document.addEventListener('DOMContentLoaded', function() {
    setTimeout(fixAdminAndModeratorContentDisplay, 500);
    setTimeout(findHideContents, 1000);
});

document.addEventListener('click', function() {
    setTimeout(c4dAutoBindCopyToAll, 50);
});