// ==UserScript==
// @name         Bilibili H键网页全屏
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  按下 H 键切换 Bilibili 网页全屏/退出全屏（自动忽略输入框、编辑区与评论框）
// @author       Grok+ChatGPT
// @match        https://www.bilibili.com/video/*
// @match        https://www.bilibili.com/list/*
// @match        https://www.bilibili.com/watchroom/*
// @match        https://player.bilibili.com/player.html*
// @match        https://live.bilibili.com/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';

    function toggleWebFullscreen() {
        const btn = document.querySelector('.bpx-player-ctrl-btn.bpx-player-ctrl-web')
                  || document.querySelector('.bpx-player-ctrl-web');
        if (btn) btn.click();
        else setTimeout(toggleWebFullscreen, 500);
    }

    function pathIndicatesTyping(path) {
        if (!path) return false;
        for (const node of path) {
            if (!node) continue;
            const tag = node.tagName ? node.tagName.toUpperCase() : '';
            if (tag === 'INPUT' || tag === 'TEXTAREA') return true;
            if (node.isContentEditable) return true;
            if (tag === 'BILI-COMMENT-TEXTAREA' || tag === 'BILI-COMMENT') return true;
            if (node.classList && (
                node.classList.contains('bili-comment-textarea__inner') ||
                node.classList.contains('reply-box') ||
                node.classList.contains('editor')
            )) return true;
        }
        return false;
    }

    document.addEventListener('keydown', function(event) {
        if (event.key.toLowerCase() !== 'h') return;

        const path = (typeof event.composedPath === 'function' && event.composedPath())
                   || event.path || [event.target];

        if (pathIndicatesTyping(path)) return;

        const active = document.activeElement;
        if (active) {
            const tag = active.tagName ? active.tagName.toUpperCase() : '';
            if (tag === 'INPUT' || tag === 'TEXTAREA' || active.isContentEditable) return;
            if (tag === 'BILI-COMMENT-TEXTAREA' || tag === 'BILI-COMMENT') return;
        }

        event.preventDefault();
        event.stopPropagation();
        toggleWebFullscreen();
    }, true);

    new MutationObserver(() => {
        if (document.querySelector('.bpx-player-ctrl-web')
         || document.querySelector('.bpx-player-ctrl-btn.bpx-player-ctrl-web')) {
            console.log('H键全屏可用');
        }
    }).observe(document.body || document.documentElement, {
        childList: true,
        subtree: true
    });
})();