// ==UserScript==
// @name         微信读书沉浸式阅读（上下滚动模式 + 主题切换）
// @namespace    http://github.com/lossj
// @version      1.0.3
// @description  微信读书上划隐藏头部和侧栏，下滑显示，同时自定义字体、字号、背景色、字体色、页面宽度、导航和菜单，支持通过油猴菜单切换主题
// @icon         https://i.miji.bid/2025/03/08/990e81d6e8ebc90d181e091cc0c99699.jpeg
// @author       LossJ
// @match        https://weread.qq.com/web/reader/*
// @require      https://code.jquery.com/jquery-3.3.1.min.js
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_registerMenuCommand
// @license      MIT
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // 定义主题对象
    const themes = {
        '极光灰': { background: '#E0E0E0', fontColor: '#222222' },
        '浅咖色': { background: '#FAEBD7', fontColor: '#222222' },
        '米黄色': { background: '#F5F5DC', fontColor: '#332222' },
        '豆沙绿': { background: '#E6F5E6', fontColor: '#223322' },
        '海天蓝': { background: '#EBF5FF', fontColor: '#222266' },
        '夜间深灰色': { background: '#282828', fontColor: '#C8C8C8' }
    };

    // 获取或设置当前主题
    const currentTheme = GM_getValue('currentTheme', '豆沙绿'); // 默认主题为豆沙绿

    // 自定义样式
    const customStyle = `
        /* 阅读区域的样式 */
        .readerContent, .app_content, .readerChapterContent {
            font-family: "霞鹜文楷", "PingFang SC", "宋体", sans-serif !important;
            font-size: 18px !important; /* 字号 */
            color: ${themes[currentTheme].fontColor} !important; /* 主题颜色*/
            background-color: ${themes[currentTheme].background} !important;
            max-width: 1200px !important;
            margin: 0 auto !important;
            padding: 20px !important;
        }

        /* 正文内容的样式 */
        .readerChapterContent p,
        .readerChapterContent div,
        .readerChapterContent span {
            font-family: inherit !important;
            font-size: inherit !important;
            color: inherit !important;  /* 继承阅读内容字体颜色 */
        }

        /* 整体页面背景 */
        body, html {
            background-color: ${themes[currentTheme].background} !important;
        }

        /* 顶部导航区域加宽 */
        .readerTopBar, .navBar {
            max-width: 1300px !important;
            width: 100% !important;
            margin: 0 auto !important;
            left: 0 !important;
            right: 0 !important;
            position: relative !important;
            transition: opacity 0.3s ease !important; /* 平滑过渡效果 */
        }

        /* 右侧菜单调整 */
        .readerControls, .readerCatalog {
            position: fixed !important;
            left: 1000px !important;  /* right效果不行 */
            bottom: 200px !important;
            transform: none !important;
            transition: opacity 0.3s ease !important;  /* 平滑过渡效果 */
        }

        /* 画线菜单字体颜色和字号 */
        .reader_toolbar_container .toolbarItem {
            color: #ffffff !important; /* 强制按钮文字为白色 */
            font-size: 14px !important; /* 字号14px */
        }

        /* 确保字体全局生效 */
        * {
            font-family: "霞鹜文楷", "PingFang SC", "宋体", sans-serif !important;
        }
    `;

    // 应用自定义样式
    const styleSheet = document.createElement('style');
    styleSheet.type = 'text/css';
    styleSheet.innerText = customStyle;
    document.head.appendChild(styleSheet);

    // 沉浸式阅读功能：上划隐藏，下滑显示
    var windowTop = 0;
    $(window).scroll(function() {
        let scrollS = $(window).scrollTop();
        let selBtn = document.querySelector('.readerTopBar');
        let readerControl = document.querySelector(".readerControls");

        if (scrollS >= windowTop) {
            // 上划隐藏
            if (selBtn) selBtn.style.opacity = 0;
            if (readerControl) readerControl.style.opacity = 0;
            windowTop = scrollS;
        } else {
            // 下滑显示
            if (selBtn) selBtn.style.opacity = 1;
            if (readerControl) readerControl.style.opacity = 1;
            windowTop = scrollS;
        }
    });

    // 注册主题切换菜单
    Object.keys(themes).forEach(theme => {
        GM_registerMenuCommand(`切换到 ${theme}`, () => {
            GM_setValue('currentTheme', theme);
            location.reload(); // 刷新页面应用新主题
        });
    });
})();