// ==UserScript==
// @name         X - Optimized Tweet Buttons
// @name:zh-TW   X - 優化推文按鈕
// @name:zh-CN   X - 优化推文按钮
// @namespace    http://tampermonkey.net/
// @version      5.0
// @description  You can freely show or hide the buttons on a tweet, including Reply, Retweet, Like, View Count, Bookmark, and Share. The interface supports switching between Chinese and English.
// @description:zh-TW 可以自由顯示/隱藏，推文上的按鈕，包括，回覆、轉推、喜歡、觀看次數、書籤、分享等按鈕，並且有中英兩種功能語言可以切換
// @description:zh-CN 可以自由显示/隐藏，推文上的按钮，包括，回覆、转推、喜欢、观看次数、书签、分享等按钮，并且有中英两种功能语言可以切换
// @author       deepseek
// @match        https://twitter.com/*
// @match        https://x.com/*
// @grant        GM_registerMenuCommand
// @grant        GM_getValue
// @grant        GM_setValue
// @license MIT
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // === 性能優化核心 ===
    const OPT = {
        debounceTime: 500,      // 防抖間隔
        observerConfig: {       // 精準監控範圍
            childList: true,
            subtree: false,
            attributes: false,
            characterData: false
        }
    };

    // === 配置系統 ===
    const CONFIG_KEY = 'XButtonSettings';
    const defaults = {
        hideReply: true,
        hideRetweet: true,
        hideBookmark: true,
        hideViews: true,
        hideShare: true,
        hideLike: false,
        language: 'EN'  // 預設英文
    };

    const config = {
        get() {
            return {...defaults, ...GM_getValue(CONFIG_KEY, {})};
        },
        update(key, value) {
            const current = this.get();
            GM_setValue(CONFIG_KEY, {...current, [key]: value});
        }
    };

    // === 高效多語言系統 ===
    const i18n = {
        EN: {
            reply: 'Reply',
            retweet: 'Retweet',
            bookmark: 'Bookmark',
            views: 'View count',
            share: 'Share',
            like: 'Like',
            language: 'Language'
        },
        ZH: {
            reply: '回覆',
            retweet: '轉推',
            bookmark: '書籤',
            views: '觀看次數',
            share: '分享',
            like: '喜歡',
            language: '語言'
        }
    };

    const t = () => i18n[config.get().language];

    // === 樣式管理 ===
    const style = {
        element: null,
        rules: new Map([
            ['hideReply', '[data-testid="reply"]{display:none!important}'],
            ['hideRetweet','[data-testid="retweet"]{display:none!important}'],
            ['hideBookmark','[data-testid="bookmark"]{display:none!important}'],
            ['hideViews','a[href*="/analytics"]{display:none!important}'],
            ['hideShare','button[aria-label="分享貼文"]:not(:has(svg g.download)){display:none!important}'],
            ['hideLike','[data-testid="like"],[data-testid="unlike"]{display:none!important}']
        ]),
        init() {
            this.element = document.createElement('style');
            this.element.id = 'x-btn-hider-styles';
            document.head.append(this.element);
            this.update();
        },
        update() {
            const activeRules = Object.entries(config.get())
                .filter(([k,v]) => this.rules.has(k) && v)
                .map(([k]) => this.rules.get(k));

            this.element.textContent = activeRules.join('');
        }
    };

    // === 選單系統 (防抖優化) ===
    const menu = {
        cmds: [],
        build: () => {
            // 清除舊選單
            menu.cmds.forEach(id => GM_unregisterMenuCommand(id));
            menu.cmds = [];

            // 主功能選單
            const items = [
                {key: 'hideReply', label: t().reply},
                {key: 'hideRetweet', label: t().retweet},
                {key: 'hideBookmark', label: t().bookmark},
                {key: 'hideViews', label: t().views},
                {key: 'hideShare', label: t().share},
                {key: 'hideLike', label: t().like}
            ];

            items.forEach(({key, label}) => {
                const status = config.get()[key] ? '✅' : '❌';
                menu.cmds.push(GM_registerMenuCommand(
                    `${label} ${status}`,
                    () => {
                        config.update(key, !config.get()[key]);
                        debouncedReload();
                    }
                ));
            });

            // 語言切換
            const langStatus = config.get().language === 'EN' ? 'EN' : 'ZH';
            menu.cmds.push(GM_registerMenuCommand(
                `${t().language}: ${langStatus}`,
                () => {
                    config.update('language', config.get().language === 'EN' ? 'ZH' : 'EN');
                    debouncedReload();
                }
            ));
        }
    };

    // === 性能優化工具 ===
    const debounce = (func, delay) => {
        let timer;
        return (...args) => {
            clearTimeout(timer);
            timer = setTimeout(() => func(...args), delay);
        };
    };

    const debouncedReload = debounce(() => location.reload(), 300);
    const debouncedStyleUpdate = debounce(() => style.update(), OPT.debounceTime);

    // === 初始化流程 ===
    (function init() {
        // 樣式初始化
        style.init();

        // 選單初始化
        menu.build();

        // 精準DOM監控
        const observer = new MutationObserver(mutations => {
            if (mutations.some(m => m.addedNodes.length > 0)) {
                debouncedStyleUpdate();
            }
        });

        observer.observe(document.body, OPT.observerConfig);
    })();
})();