// ==UserScript==
// @name         小草简洁助手
// @namespace    http://tampermonkey.net/
// @version      2.1
// @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) {
        var imgs = document.querySelectorAll('.tpc_cont img');
        for (var i = 0; i < imgs.length; i++) {
            var img = imgs[i];
            var prev = img.previousSibling;
            while (prev && (prev.nodeType !== 1 || prev.tagName === 'BR' || (prev.nodeType === 3 && prev.nodeValue.trim() === '') || (prev.nodeType === 3 && /^\s+$/.test(prev.nodeValue)))) {
                var current = prev;
                prev = prev.previousSibling;
                current.parentNode.removeChild(current);
            }
            img.addEventListener('click', function(e) {
                this.removeAttribute('href');
                e.stopPropagation();
                var div = this.parentNode;
                var imgs = div.querySelectorAll('img');
                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.overflow = 'auto';
                var imgContainer = document.createElement('div');
                imgContainer.style.width = targetWidth + 'px';
                imgContainer.style.margin = '0 auto';
                for (var i = 0; i < imgs.length; i++) {
                    var img = imgs[i];
                    var src = img.getAttribute('src');
                    var imgEl = document.createElement('img');
                    imgEl.setAttribute('src', src);
                    imgEl.style.maxWidth = '100%';
                    imgEl.style.display = 'block';
                    imgContainer.appendChild(imgEl);
                }
                container.appendChild(imgContainer);
                var closeBtn = document.createElement('div');
                closeBtn.style.position = 'absolute';
                closeBtn.style.top = '10px';
                closeBtn.style.right = '10px';
                closeBtn.style.width = '30px';
                closeBtn.style.height = '30px';
                closeBtn.style.lineHeight = '30px';
                closeBtn.style.textAlign = 'center';
                closeBtn.style.backgroundColor = '#fff';
                closeBtn.style.borderRadius = '50%';
                closeBtn.style.cursor = 'pointer';
                closeBtn.style.fontSize = '20px';
                closeBtn.style.color = '#000';
                closeBtn.innerHTML = '&times;';
                closeBtn.addEventListener('click', function() {
                    container.parentNode.removeChild(container);
                });
                container.appendChild(closeBtn);
                imgContainer.addEventListener('click', function(e) {
                    e.stopPropagation();
                    container.parentNode.removeChild(container);
                });
                document.body.appendChild(container);
            }, true);
            var ratio = targetWidth / img.naturalWidth;
            var height = Math.round(img.naturalHeight * ratio);
            img.style.width = targetWidth + 'px';
            img.style.height = height + 'px';
        }
    }

    // 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
    }
    }



})();