// ==UserScript==
// @name         网页继续教育万能自动播放视频倍数，支持国家开放大学|成人本科｜继续教育｜教师｜会计｜医生｜华医网|好医生|公需课｜专业课｜网课等均部分支持需要尝试 
// @namespace    Jay
// @version      1.6
// @license      MIT
// @description  优化倍速窗口UI，增加确认按钮，按要求调整倍速输入（限制为1到16倍）、强制倍速开关与公告的布局，脚本简单明确话！
// @author       各种继续教育学习
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let currentRate = 1.0; 
    let isMinimized = false;
    let isForceRateEnabled = true; 
    let modalInstance = null; 

    
    function setPlaybackRate(rate) {
        const videos = document.querySelectorAll('video');
        videos.forEach(video => {
            try {
                video.playbackRate = rate; 
                video.play().catch(() => {}); 
            } catch (error) {
                console.warn('倍速设置失败，视频不支持倍速播放');
            }
        });
    }

    
    function forcePlaybackRate() {
        const videos = document.querySelectorAll('video');
        videos.forEach(video => {
            if (!video.playbackRate) {
                video.playbackRate = currentRate; 
            }
            video.play().catch(() => {}); 
        });
    }

    
    function toggleForceRate() {
        isForceRateEnabled =!isForceRateEnabled;
        const status = isForceRateEnabled? '开启' : '关闭';
        console.log(`倍速功能已${status}`);
        modalInstance.querySelector('#forceRateStatus').innerText = `倍速强制功能: ${status}`;
        if (isForceRateEnabled) {
            forcePlaybackRate();
        } else {
            resetPlaybackRate();
        }
    }

    
    function resetPlaybackRate() {
        const videos = document.querySelectorAll('video');
        videos.forEach(video => {
            video.playbackRate = 1.0; 
        });
    }

    
    function createModal() {
        if (modalInstance) {
            modalInstance.style.display = 'block'; 
            return modalInstance;
        }

        const modal = document.createElement('div');
        modal.style.position = 'fixed';
        modal.style.left = '0';
        modal.style.top = '50%';
        modal.style.transform = 'translateY(-50%)';
        modal.style.backgroundColor = 'white';
        modal.style.padding = '20px';
        modal.style.zIndex = '1000';
        modal.style.borderRadius = '5px';
        modal.style.boxShadow = '0 4px 8px rgba(0, 0, 0, 0.1)';
        modal.style.width = '300px';
        modal.style.height = 'auto';
        modal.style.textAlign = 'center';
        modal.style.fontFamily = 'Arial, sans-serif';
        modalInstance = modal;

        
        const closeButton = document.createElement('button');
        closeButton.textContent = 'x';
        closeButton.style.position = 'absolute';
        closeButton.style.top = '5px';
        closeButton.style.right = '5px';
        closeButton.style.padding = '5px 10px';
        closeButton.style.fontSize = '18px';
        closeButton.style.cursor = 'pointer';
        closeButton.style.backgroundColor = 'transparent';
        closeButton.style.border = 'none';
        closeButton.style.color = '#d9534f';
        closeButton.onclick = function() {
            modal.style.display = 'none';
        };
        modal.appendChild(closeButton);

        
        const minimizeButton = document.createElement('button');
        minimizeButton.textContent = '–';
        minimizeButton.style.position = 'absolute';
        minimizeButton.style.top = '5px';
        minimizeButton.style.right = '40px';
        minimizeButton.style.padding = '5px 10px';
        minimizeButton.style.fontSize = '18px';
        minimizeButton.style.cursor = 'pointer';
        minimizeButton.style.backgroundColor = 'transparent';
        minimizeButton.style.border = 'none';
        minimizeButton.style.color = '#5bc0de';
        minimizeButton.onclick = function() {
            toggleMinimize(modal);
        };
        modal.appendChild(minimizeButton);

       
        const rateLabel = document.createElement('label');
        rateLabel.innerText = '请输入倍速（1-16）：';
        modal.appendChild(rateLabel);
        
        const rateInput = document.createElement('input');
        rateInput.type = 'number';
        rateInput.step = '0.1';
        rateInput.min = '1'; 
        rateInput.max = '16'; 
        rateInput.value = currentRate;
        rateInput.style.marginTop = '10px';
        rateInput.style.fontSize = '16px';
        rateInput.style.padding = '5px';
        rateInput.style.width = '100px';
        modal.appendChild(rateInput);

       
        const confirmButton = document.createElement('button');
        confirmButton.innerText = '确认';
        confirmButton.style.marginTop = '20px';
        confirmButton.style.padding = '5px 10px';
        confirmButton.style.fontSize = '14px';
        confirmButton.style.cursor = 'pointer';
        confirmButton.style.width = '100%';
        confirmButton.onclick = function() {
            let newRate = parseFloat(rateInput.value);
            if (!isNaN(newRate) && newRate >= 1 && newRate <= 16) {
                currentRate = newRate;
                setPlaybackRate(currentRate);
            } else {
                alert('请输入有效的倍速值（1到16之间）。');
            }
        };
        modal.appendChild(confirmButton);

        
        const toggleRateButton = document.createElement('button');
        toggleRateButton.innerText = isForceRateEnabled? '关闭倍速强制' : '开启倍速强制';
        toggleRateButton.style.marginTop = '20px';
        toggleRateButton.style.padding = '5px 10px';
        toggleRateButton.style.fontSize = '14px';
        toggleRateButton.style.cursor = 'pointer';
        toggleRateButton.style.width = '100%';
        toggleRateButton.onclick = function() {
            toggleForceRate();
            toggleRateButton.innerText = isForceRateEnabled? '关闭倍速强制' : '开启倍速强制';
        };
        modal.appendChild(toggleRateButton);

        
       
        const rateStatus = document.createElement('p');
        rateStatus.id = 'forceRateStatus';
        rateStatus.innerText = `倍速强制功能: ${isForceRateEnabled? '开启' : '关闭'}`;
        rateStatus.style.marginTop = '20px';
        rateStatus.style.fontSize = '14px';
        rateStatus.style.color = '#555';
        modal.appendChild(rateStatus);

      
        const additionalInfo = document.createElement('div');
        additionalInfo.innerHTML = `
            <strong>倍速需谨慎</strong><br>
            不是所有的学习平台都可以进行倍数<br>
            该平台是否支持请自行测试<br>
            若没记录则表示为不可以<br>
            添加仅解决代刷问题非脚本问题<br>
            <span style="color: red;">需要帮忙学习联系 v：study-088</span>
        `;
        additionalInfo.style.fontSize = '16px';  
        additionalInfo.style.color = '#777';
        additionalInfo.style.marginTop = '10px';
        modal.appendChild(additionalInfo);

       
        document.body.appendChild(modal);

        return modal;
    }


    function toggleMinimize(modal) {
        if (isMinimized) {
            modal.style.height = 'auto';
            modal.style.padding = '20px';
            modal.querySelector('input').style.display = 'block';
            modal.querySelector('button').style.display = 'block';
            modal.querySelector('p').style.display = 'block';
            modal.querySelector('div').style.display = 'block';
            isMinimized = false;
            modal.querySelector('button:nth-child(2)').textContent = '–';
        } else {
            modal.style.height = '40px';
            modal.style.padding = '10px';
            modal.querySelector('input').style.display = 'none';
            modal.querySelector('button').style.display = 'none';
            modal.querySelector('p').style.display = 'none';
            modal.querySelector('div').style.display = 'none';
            isMinimized = true;
            modal.querySelector('button:nth-child(2)').textContent = '展开';
        }
    }


    createModal();




    setInterval(() => {
        if (isForceRateEnabled) {
            forcePlaybackRate(); // 强制倍速
        }
    }, 1000); 
})();