// ==UserScript==
// @name         小草简洁助手
// @namespace    http://tampermonkey.net/
// @version      2.11
// @description  添加上一帖和下一帖的悬浮按钮，并根据提取的链接进行跳转，同时提供设置选项，包括上下帖导航、限制页面宽度为1080、等比例无缝看图和图片查看模式
// @match        *://*/htm_data/*
// @match      http*://*/htm_data/*.html
// @match      http*://*/htm_mob/*.html
// @match      http*://*/read.php*
// @match      http*://*/personal.php*
// @match      http*://*/post.php*
// @match      http*://*/thread0806.php*
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_registerMenuCommand
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // 获取链接数组
    var links = [];

    if (window.location.href.includes('/thread0806.php?fid=16')) {
        var threadLinks = document.querySelectorAll('a[href^="htm_mob"]');
        for (var i = 0; i < threadLinks.length; i++) {
            links.push(threadLinks[i].href);
        }
        localStorage.setItem('threadLinks', JSON.stringify(links));
    } else if (window.location.href.includes('/htm_mob/')) {
        links = JSON.parse(localStorage.getItem('threadLinks')) || [];
    }

    // 上下帖导航
    var enableNavigation = GM_getValue('enableNavigation', true);

    // 限制页面宽度为1080
    var limitPageWidth = GM_getValue('limitPageWidth', true);

    // 等比例无缝看图
    var enableSeamlessView = GM_getValue('enableSeamlessView', true);

    // 图片查看模式
    var enableImagePreview = GM_getValue('enableImagePreview', true);

    // 使用手机版面
    var enableMobilePage = GM_getValue('enableMobilePage',true)

    // 手机版帖子简洁
    var enableClearPage = GM_getValue('enableClearPage',true)

    if (window.location.href.includes('/htm_mob/')) {
        var previousButton = document.createElement('button');
        previousButton.innerHTML = '上一帖';
        previousButton.style.position = 'fixed';
        previousButton.style.bottom = '10px';
        previousButton.style.left = '40%';
        previousButton.style.transform = 'translateX(-50%)';
        previousButton.style.zIndex = '9999';
        previousButton.addEventListener('click', function() {
            navigateToPreviousPost();
        });
        if (enableNavigation) {
            document.body.appendChild(previousButton);
        }

        var nextButton = document.createElement('button');
        nextButton.innerHTML = '下一帖';
        nextButton.style.position = 'fixed';
        nextButton.style.bottom = '10px';
        nextButton.style.right = '40%';
        nextButton.style.transform = 'translateX(50%)';
        nextButton.style.zIndex = '9999';
        nextButton.addEventListener('click', function() {
            navigateToNextPost();
        });
        if (enableNavigation) {
            document.body.appendChild(nextButton);
        }
    }

    GM_registerMenuCommand('小草简洁助手 设置', function() {
        var settingsWindow = document.getElementById('settingsWindow');
        if (settingsWindow) {
            settingsWindow.style.display = 'block';
        } else {
            createSettingsWindow();
        }
    });

    function createSettingsWindow() {
        var settingsWindow = document.createElement('div');
        settingsWindow.id = 'settingsWindow';
        settingsWindow.style.position = 'fixed';
        settingsWindow.style.top = '50%';
        settingsWindow.style.left = '50%';
        settingsWindow.style.transform = 'translate(-50%, -50%)';
        settingsWindow.style.width = '200px';
        settingsWindow.style.height = '280px';
        settingsWindow.style.backgroundColor = '#fff';
        settingsWindow.style.border = '1px solid #ccc';
        settingsWindow.style.boxShadow = '0 0 10px rgba(0, 0, 0, 0.2)';
        settingsWindow.style.padding = '20px';
        settingsWindow.style.zIndex = '9999';

        var titleLabel = document.createElement('h3');
        titleLabel.innerHTML = '小草简洁助手 设置';
        settingsWindow.appendChild(titleLabel);

        var navigationCheckbox = createCheckbox('enableNavigation', '上下帖导航', enableNavigation);
        settingsWindow.appendChild(navigationCheckbox);

        var limitWidthCheckbox = createCheckbox('limitPageWidth', '限制页面宽度为1080', limitPageWidth);
        settingsWindow.appendChild(limitWidthCheckbox);

        var seamlessViewCheckbox = createCheckbox('enableSeamlessView', '等比例无缝看图', enableSeamlessView);
        settingsWindow.appendChild(seamlessViewCheckbox);

        var imagePreviewCheckbox = createCheckbox('enableImagePreview', '图片查看模式', enableImagePreview);
        settingsWindow.appendChild(imagePreviewCheckbox);

        var MobilePageCheckbox = createCheckbox('enableMobilePage', '使用手机版面', enableMobilePage);
        settingsWindow.appendChild(MobilePageCheckbox);

        var ClearPageCheckbox = createCheckbox('enableClearPage', '手机版帖子简洁', enableClearPage);
        settingsWindow.appendChild(ClearPageCheckbox);

        var saveButton = document.createElement('button');
        saveButton.innerHTML = '保存';
        saveButton.addEventListener('click', function() {
            enableNavigation = document.getElementById('enableNavigation').checked;
            GM_setValue('enableNavigation', enableNavigation);

            limitPageWidth = document.getElementById('limitPageWidth').checked;
            GM_setValue('limitPageWidth', limitPageWidth);

            enableSeamlessView = document.getElementById('enableSeamlessView').checked;
            GM_setValue('enableSeamlessView', enableSeamlessView);

            enableImagePreview = document.getElementById('enableImagePreview').checked;
            GM_setValue('enableImagePreview', enableImagePreview);

            enableMobilePage = document.getElementById('enableMobilePage').checked;
            GM_setValue('enableMobilePage', enableMobilePage);

            enableClearPage = document.getElementById('enableClearPage').checked;
            GM_setValue('enableClearPage', enableClearPage);

            var successLabel = document.getElementById('successLabel');
            successLabel.style.display = 'block';
            setTimeout(function() {
                settingsWindow.style.display = 'none';
                successLabel.style.display = 'none';
            }, 2000);
        });
        settingsWindow.appendChild(saveButton);

        var successLabel = document.createElement('label');
        successLabel.id = 'successLabel';
        successLabel.innerHTML = '保存成功，刷新页面生效！';
        successLabel.style.display = 'none';
        settingsWindow.appendChild(successLabel);

        document.body.appendChild(settingsWindow);
    }

    function createCheckbox(id, label, checked) {
        var checkbox = document.createElement('input');
        checkbox.id = id;
        checkbox.type = 'checkbox';
        checkbox.checked = checked;

        var checkboxLabel = document.createElement('label');
        checkboxLabel.innerHTML = label;
        checkboxLabel.setAttribute('for', id);

        var container = document.createElement('div');
        container.appendChild(checkbox);
        container.appendChild(checkboxLabel);

        return container;
    }

    function navigateToPreviousPost() {
        var currentURL = window.location.href;
        var currentIndex = links.indexOf(currentURL);
        if (currentIndex !== -1 && currentIndex > 0) {
            var previousURL = links[currentIndex - 1];
            window.location.href = previousURL;
        }
    }

    function navigateToNextPost() {
        var currentURL = window.location.href;
        var currentIndex = links.indexOf(currentURL);
        if (currentIndex !== -1 && currentIndex < links.length - 1) {
            var nextURL = links[currentIndex + 1];
            window.location.href = nextURL;
        }
    }

    // 限制页面宽度为1080
    if (limitPageWidth) {
        var browserWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
        var targetWidth = Math.min(browserWidth, 1080);
        document.body.style.maxWidth = targetWidth + 'px';
        document.body.style.margin = '0 auto';
    }

    // 等比例无缝看图
    if (enableSeamlessView) {
    // 延迟执行函数
        function delayedExecution() {
            // 获取tpc_cont元素
            var tpcCont = document.querySelector('div.tpc_cont');

            if (tpcCont) {
                // 获取tpc_cont元素下的所有子节点
                var childNodes = tpcCont.childNodes;

                // 遍历子节点
                for (var i = childNodes.length - 1; i >= 0; i--) {
                    var node = childNodes[i];

                    // 判断节点类型是否为元素节点
                    if (node.nodeType === Node.ELEMENT_NODE) {
                        // 判断节点名称是否为br
                        if (node.nodeName === 'BR') {
                            // 判断br标签下的内容是否为文本节点
                            if (node.nextSibling && node.nextSibling.nodeType === Node.TEXT_NODE) {
                                // 如果br标签下的内容是文字，则保留br标签
                                continue;
                            } else {
                                // 删除br标签
                                tpcCont.removeChild(node);
                                continue;
                            }
                        }
                    }

                    // 判断节点类型是否为文本节点，并且包含&nbsp;
                    if (node.nodeType === Node.TEXT_NODE && node.textContent.includes('&nbsp;')) {
                        // 删除&nbsp;
                        node.textContent = node.textContent.replace(/&nbsp;/g, '');
                    }
                }
            }
        }

        // 延迟2秒后执行函数
        setTimeout(delayedExecution, 2000);



        function adjustMediaLayout() {
            // 获取tpc_cont元素
            var tpcCont = document.querySelector('div.tpc_cont');

            if (tpcCont) {
                // 获取tpc_cont元素下的所有子节点
                var childNodes = tpcCont.childNodes;

                // 创建包裹媒体元素的容器
                var mediaContainer = document.createElement('div');
                mediaContainer.style.width = '100%';
                mediaContainer.style.overflow = 'hidden';

                // 遍历子节点
                for (var i = 0; i < childNodes.length; i++) {
                    var node = childNodes[i];

                    // 判断节点类型是否为元素节点
                    if (node.nodeType === Node.ELEMENT_NODE) {
                        // 判断节点是否为媒体元素（图片、视频、音频）
                        var isMediaElement = node.nodeName === 'IMG' || node.nodeName === 'VIDEO' || node.nodeName === 'AUDIO';

                        if (isMediaElement || node.nodeName === 'BR') {
                            // 将媒体元素和换行元素添加到容器中
                            mediaContainer.appendChild(node);
                        } else {
                            // 将文本节点添加到容器中，并添加换行元素作为分隔
                            var textContainer = document.createElement('div');
                            textContainer.appendChild(node);
                            textContainer.appendChild(document.createElement('br'));
                            mediaContainer.appendChild(textContainer);
                        }
                    }
                }

                // 清空tpc_cont元素的内容
                tpcCont.innerHTML = '';

                // 将包含媒体元素和文字的容器添加到tpc_cont元素中
                tpcCont.appendChild(mediaContainer);
            }

            // 调整媒体元素的宽度缩放
            var mediaElements = document.querySelectorAll('div.tpc_cont img, div.tpc_cont video, div.tpc_cont audio');
            for (var j = 0; j < mediaElements.length; j++) {
                var mediaElement = mediaElements[j];
                mediaElement.style.width = '100%';
                mediaElement.style.height = 'auto';
            }
        }

        // 延迟2秒后执行函数
        setTimeout(adjustMediaLayout, 2000);
    }

    // 图片查看模式
    if (enableImagePreview) {
        var images = document.querySelectorAll('.tpc_content img');
        for (var i = 0; i < images.length; i++) {
            var img = images[i];
            img.style.cursor = 'pointer';
            img.addEventListener('click', function() {
                var src = this.getAttribute('src');
                var container = document.createElement('div');
                container.style.position = 'fixed';
                container.style.top = '0';
                container.style.left = '0';
                container.style.width = '100%';
                container.style.height = '100%';
                container.style.backgroundColor = 'rgba(0, 0, 0, 0.8)';
                container.style.zIndex = '9999';
                container.style.display = 'flex';
                container.style.alignItems = 'center';
                container.style.justifyContent = 'center';
                var image = document.createElement('img');
                image.setAttribute('src', src);
                image.style.maxHeight = '90%';
                image.style.maxWidth = '90%';
                image.addEventListener('click', function(e) {
                    e.stopPropagation();
                    container.parentNode.removeChild(container);
                });
                container.appendChild(image);
                document.body.appendChild(container);
            });
        }
    }

        // 添加使用手机版页面功能的代码
        if (enableMobilePage) {
        var url = window.location.href;
        var regex = /\/htm_data\//;
            if (regex.test(url)) {
                window.location.href = url.replace(regex, '/htm_mob/');
            }
        }
    if(enableClearPage){
 if (window.location.href.includes('/htm_mob/') || window.location.href.includes('read.php')) {
        // 延迟1秒后执行以下代码
        setTimeout(function() {
            // 定义需要过滤的元素选择器
            const adSelector = '.ad, .ads, .advertising, .advertisement, .ad-banner, .ad-container, .ad-frame, .ad-leaderboard, .ad-slot, .ad-wrapper, .banner-ad, .google-ads, .sponsored';

            // 获取所有需要过滤的元素
            const ads = document.querySelectorAll(adSelector);

            // 遍历所有需要过滤的元素，并将其从DOM树中移除
            ads.forEach(ad => {
                ad.remove();
            });

            // 定义需要过滤的指定元素选择器
            //const targetSelector = '.tpc_face, .tpc_face_svg,.tpc_icon,.f_one,.tpc_rp_btn,.fr,.post_comm,span.f18,div.t,.t_like,.h.guide,div.line:nth-child(3)';
            const targetSelector = '.tpc_face,.tpc_icon.fl,.post_comm_face,.post_comm_face_svg,.f_one,.tpc_rp_btn,.fr,div.t,.t_like,.h.guide,div.line:nth-child(3)';

            // 获取所有需要过滤的指定元素
            const targets = document.querySelectorAll(targetSelector);

            // 遍历所有需要过滤的指定元素，并将其从DOM树中移除
            targets.forEach(target => {
                target.remove();
            });


            // 处理用户名和时间为单行
            var mainDiv = document.getElementById('main');
            if (mainDiv) {
                var tpcDivs = mainDiv.getElementsByClassName('tpc_detail f10 fl');
                for (var i = 0; i < tpcDivs.length; i++) {
                    var div = tpcDivs[i];
                    var brTags = div.getElementsByTagName('br');
                    for (var j = brTags.length - 1; j >= 0; j--) {
                        var br = brTags[j];
                        br.parentNode.replaceChild(document.createTextNode(' '), br);
                    }
                }
            }

        }, 1000); // 延迟1秒后执行以上代码
    }
    }



})();