(function() {
'use strict';

// === 核心功能 ===
function initEnhancements() {
    try {
        const hostname = window.location.hostname;
        console.log(`[Enhancement] 检测到网站: ${hostname}`);
        
        if (hostname === 'matrix.tencent.com') {
            const key = 'fp';
            const value = generateRandomHex(32);
            setStorageItem(key, value, 'Zhuque');
        } else if (hostname === 'www.badstudent.ai') {
            const key = 'deviceId';
            const value = generateUUID();
            setStorageItem(key, value, 'BadStudentAI');
        } else {
            console.log('[Enhancement] 当前网站不在支持列表中');
        }
    } catch (error) {
        console.error('[Enhancement] 初始化增强功能时出错:', error);
    }
}

// 随机十六进制生成
function generateRandomHex(length) {
    try {
        // 优先使用crypto API
        if (window.crypto && crypto.getRandomValues) {
            const array = new Uint8Array(length);
            crypto.getRandomValues(array);
            return Array.from(array, byte => byte.toString(16).padStart(2, '0')).join('');
        }
        
        // 回退到Math.random()
        const hex = '0123456789abcdef';
        let result = '';
        for (let i = 0; i < length; i++) {
            result += hex[Math.floor(Math.random() * 16)];
        }
        return result;
    } catch (error) {
        console.error('[Enhancement] 生成随机十六进制时出错:', error);
        return '00000000000000000000000000000000'; // 默认值
    }
}

// UUID生成
function generateUUID() {
    try {
        // 优先使用crypto API
        if (window.crypto && crypto.randomUUID) {
            return crypto.randomUUID();
        }
        
        // 回退实现
        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
            const r = Math.random() * 16 | 0;
            const v = c === 'x' ? r : (r & 0x3 | 0x8);
            return v.toString(16);
        });
    } catch (error) {
        console.error('[Enhancement] 生成UUID时出错:', error);
        return '00000000-0000-0000-0000-000000000000'; // 默认值
    }
}

// 存储设置
function setStorageItem(key, value, site) {
    try {
        localStorage.setItem(key, value);
        console.log(`[${site} Enhancement] 已启用增强功能，${key}: ${value}`);
        
        // 通知background
        if (chrome && chrome.runtime && chrome.runtime.sendMessage) {
            chrome.runtime.sendMessage({
                action: 'resetComplete',
                site: site,
                key: key,
                value: value
            }).catch(error => {
                console.error('[Enhancement] 发送消息到background失败:', error);
            });
        }
    } catch(error) {
        console.error('[Enhancement] 设置存储项失败:', error);
    }
}

// 页面加载完成后初始化增强功能
if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', initEnhancements);
} else {
    initEnhancements();
}

})();