// ==UserScript==
// @name        替换网页字体
// @author      ai
// @version     2.46
// @match       *://*/*
// @run-at      document-start
// @early-start
// @grant       GM_addStyle
// @grant       GM_getValues
// @grant       GM_getValue
// @grant       GM_setValues
// @grant       GM_setValue
// @grant       GM_listValues
// @grant       GM_addValueChangeListener
// @grant       GM_registerMenuCommand
// @grant       GM_unregisterMenuCommand
// @description 替换网页的字体
// ==/UserScript==

(function() {
    'use strict';
    const DEFAULT_CONFIG = {
        enabled: true,
        font: '微软雅黑',
        exclusions: 'code'
    };
    class FontManager {
        constructor() {
            this.config = GM_getValues(DEFAULT_CONFIG);
            this.menuCommands = new Map();
            this.styleElement = GM_addStyle('');
            this.init();
        }
        init() {
            this.refreshStyles();
            this.setupListeners();
            if (window.top === window) this.updateMenu();
            this.updateWebFonts();
        }
        setupListeners() {
            GM_addValueChangeListener("enabled", (k, o, n) => { this.config.enabled = n; this.refreshStyles(); this.updateMenu(); });
            GM_addValueChangeListener("font", (k, o, n) => { this.config.font = n; this.refreshStyles(); });
            GM_addValueChangeListener("exclusions", (k, o, n) => { this.config.exclusions = n; this.refreshStyles(); });
        }
        refreshStyles() {
            if (!this.config.enabled) {
                this.styleElement.textContent = '';
                return;
            }
            const fontStack = this.webFonts ? `${this.config.font}, ${this.webFonts}` : this.config.font;
            const baseExclusions = 'i, [class*="ico"], [class*="fa-"], [class*="symbol"]';
            const userExclusions = this.config.exclusions.trim();
            const fullExclusions = userExclusions ? `${baseExclusions}, ${userExclusions}` : baseExclusions;
            this.styleElement.textContent = `
                @scope (body) to (${fullExclusions}) {
                    * { font-family: ${fontStack} !important; }
                    *::before, *::after { font-family: ${this.webFonts} !important; }
                }
            `;
        }
        async updateWebFonts() {
            await document.fonts.ready;
            const fonts = new Set();
            document.fonts.forEach(font => fonts.add(`"${font.family}"`));
            if (fonts.size > 0) {
                this.webFonts = [...fonts].join(',');
                this.refreshStyles();
            }
        }
        updateMenu() {
            if (window.top !== window) return;
            this.menuCommands.forEach(id => GM_unregisterMenuCommand(id));
            const title = this.config.enabled ? '❌ 禁用字体替换' : '✅ 启用字体替换';
            this.registerMenu('enabled', title, () => GM_setValue("enabled", !this.config.enabled));
            this.registerMenu('font', '🖋️ 配置字体名称', () => this.promptConfig('font', '字体名称（如: "Inter", "Microsoft YaHei"）'));
            this.registerMenu('exclusions', '🚫 配置排除元素', () => this.promptConfig('exclusions', 'CSS 选择器'));
            this.registerMenu('reset', '🗑️ 恢复默认配置', () => confirm('确定恢复吗？') && this.reset());
        }
        registerMenu(key, label, cb) {
            this.menuCommands.set(key, GM_registerMenuCommand(label, cb));
        }
        promptConfig(key, title) {
            const res = prompt(`请输入${title}`, this.config[key]);
            if (res !== null) GM_setValue(key, res);
        }
        reset() {
            if (confirm('确定要将所有配置恢复为默认值吗？')) GM_setValues(DEFAULT_CONFIG);
        }
    }
    new FontManager();
})();