// ==UserScript==
// @name         Video Player Lock Tool 视频播放锁屏工具
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  视频全屏锁屏防误触 Locks the screen until a key is clicked.
// @author       Hui Fei 会飞
// @match        *://*.youku.com/*
// @match        *://*.iqiyi.com/*
// @match        *://*.iq.com/*
// @match        *://v.qq.com/*
// @match        *://m.v.qq.com/*
// @match        *://*.tudou.com/*
// @match        *://*.youtube.com/*
// @match        *://*.bilibili.com/*
// @grant        none
// @license      MIT License
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    const lockButtonHideDelay = 3000; // 3 seconds delay for button hide
    let hideButtonTimeout;
    let isLocked = false;
    let fullscreenElement = null;

    // Create the key-shaped lock element
    const lockButton = document.createElement('div');
    lockButton.id = 'lockButton';
    lockButton.style.position = 'fixed';
    lockButton.style.left = '0';
    lockButton.style.top = '50%';
    lockButton.style.transform = 'translateY(-50%)';
    lockButton.style.width = '30px';
    lockButton.style.height = '30px';
    lockButton.style.backgroundColor = 'rgba(128, 128, 128, 0.3)';
    lockButton.style.borderRadius = '50%';
    lockButton.style.cursor = 'pointer';
    lockButton.style.zIndex = '99999';
    lockButton.style.display = 'none'; // Initially hidden
    document.body.appendChild(lockButton);

    // Lock Screen Button Click Event
    lockButton.addEventListener('click', function(event) {
        if (isLocked) {
            isLocked = false;
            lockButton.style.backgroundColor = 'gray'; // Unlocked state.
            document.body.style.pointerEvents = 'auto'; // Enable click events for the page.
        } else {
            isLocked = true;
            lockButton.style.backgroundColor = 'rgba(0, 128, 0, 0.3)'; // Locked State
            document.body.style.pointerEvents = 'none'; // Disable click events for the entire page.
            lockButton.style.pointerEvents = 'auto'; // Enable click events for the key.
        }
    });

    function hideLockButton() {
        lockButton.style.display = 'none';
    }

    function showLockButton() {
        lockButton.style.display = 'block';
    }

    function resetHideButtonTimer() {
        clearTimeout(hideButtonTimeout);
        hideButtonTimeout = setTimeout(hideLockButton, lockButtonHideDelay);
    }

    // Fullscreen change event
    document.addEventListener('fullscreenchange', function(event) {
        fullscreenElement = document.fullscreenElement;
        if (fullscreenElement) {
            fullscreenElement.appendChild(lockButton);
            showLockButton();
            resetHideButtonTimer();
        } else {
            document.body.appendChild(lockButton);
            hideLockButton();
            clearTimeout(hideButtonTimeout);

            if (isLocked) {
                isLocked = false;
                lockButton.style.backgroundColor = 'gray';
                document.body.style.pointerEvents = 'auto';
            }
        }
    });

    // Mouse move event
    document.addEventListener('mousemove', function() {
        if (fullscreenElement) {
            showLockButton();
            resetHideButtonTimer();
        }
    });

    // Touch start event (for touchscreen devices)
    document.addEventListener('touchstart', function() {
        if (fullscreenElement) {
            showLockButton();
            resetHideButtonTimer();
        }
    });

})();