/**
 * 班级操行分管理系统 - 公共JS
 * 
 * 开发者: Canglan
 * 联系方式: admin@sea-studio.top
 * 版权归属: Sea Network Technology Studio
 * 许可证: MIT License
 * 
 * 版权所有 © Sea Network Technology Studio
 */

// API基础地址
const API_BASE_URL = window.API_BASE_URL || 'http://localhost:8000';
const JWT_STORAGE_KEY = 'class_system_token';
const USER_STORAGE_KEY = 'class_system_user';

// 获取Token
function getToken() {
    return localStorage.getItem(JWT_STORAGE_KEY);
}

// 获取用户信息
function getUserInfo() {
    const userStr = localStorage.getItem(USER_STORAGE_KEY);
    if (!userStr) return null;
    try {
        return JSON.parse(userStr);
    } catch {
        return null;
    }
}

// 保存用户信息
function setUserInfo(user) {
    localStorage.setItem(USER_STORAGE_KEY, JSON.stringify(user));
}

// 清除登录信息
function clearAuth() {
    localStorage.removeItem(JWT_STORAGE_KEY);
    localStorage.removeItem(USER_STORAGE_KEY);
}

// 检查登录状态
function checkAuth() {
    const token = getToken();
    if (!token) {
        window.location.href = '/index.php';
        return false;
    }
    return true;
}

// API请求封装
async function apiRequest(url, options = {}) {
    const token = getToken();
    
    const headers = {
        'Content-Type': 'application/json',
        ...options.headers
    };
    
    if (token) {
        headers['Authorization'] = `Bearer ${token}`;
    }
    
    const config = {
        ...options,
        headers
    };
    
    try {
        const response = await fetch(`${API_BASE_URL}${url}`, config);
        const data = await response.json();
        
        if (response.status === 401) {
            clearAuth();
            window.location.href = '/index.php';
            return null;
        }
        
        return data;
    } catch (error) {
        console.error('API请求错误:', error);
        showToast('网络错误，请稍后重试', 'error');
        return null;
    }
}

// GET请求
async function apiGet(url, params = {}) {
    const queryString = new URLSearchParams(params).toString();
    const fullUrl = queryString ? `${url}?${queryString}` : url;
    return apiRequest(fullUrl, { method: 'GET' });
}

// POST请求
async function apiPost(url, data = {}) {
    return apiRequest(url, {
        method: 'POST',
        body: JSON.stringify(data)
    });
}

// PUT请求
async function apiPut(url, data = {}) {
    return apiRequest(url, {
        method: 'PUT',
        body: JSON.stringify(data)
    });
}

// DELETE请求
async function apiDelete(url) {
    return apiRequest(url, { method: 'DELETE' });
}

// 显示提示消息
function showToast(message, type = 'success') {
    const toast = document.createElement('div');
    toast.className = `toast toast-${type}`;
    toast.textContent = message;
    document.body.appendChild(toast);
    
    setTimeout(() => {
        toast.remove();
    }, 3000);
}

// 格式化日期
function formatDate(dateStr) {
    if (!dateStr) return '-';
    const date = new Date(dateStr);
    return `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(date.getDate()).padStart(2, '0')}`;
}

// 格式化日期时间
function formatDateTime(dateStr) {
    if (!dateStr) return '-';
    const date = new Date(dateStr);
    return `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(date.getDate()).padStart(2, '0')} ${String(date.getHours()).padStart(2, '0')}:${String(date.getMinutes()).padStart(2, '0')}`;
}

// 获取状态标签HTML
function getStatusBadge(status, type = 'homework') {
    const statusMap = {
        homework: {
            'submitted': '已提交',
            'not_submitted': '未提交',
            'late': '迟交'
        },
        attendance: {
            'present': '出勤',
            'absent': '缺勤',
            'late': '迟到',
            'leave': '请假'
        }
    };
    
    const texts = statusMap[type] || statusMap.homework;
    const text = texts[status] || status;
    
    let className = 'status-badge ';
    switch (status) {
        case 'submitted':
        case 'present':
            className += 'status-submitted';
            break;
        case 'not_submitted':
        case 'absent':
            className += 'status-not_submitted';
            break;
        case 'late':
            className += 'status-late';
            break;
        case 'leave':
            className += 'status-leave';
            break;
        default:
            className += 'status-not_submitted';
    }
    
    return `<span class="${className}">${text}</span>`;
}

// 退出登录
async function logout() {
    await apiPost('/api/auth/logout');
    clearAuth();
    window.location.href = '/index.php';
}

// 加载用户信息
function loadUserInfo() {
    const user = getUserInfo();
    const userNameSpan = document.getElementById('userName');
    if (userNameSpan && user) {
        userNameSpan.textContent = user.real_name || user.username;
    }
}

// 检查是否需要修改密码
function checkNeedChangePassword() {
    const user = getUserInfo();
    if (user && user.need_change_password) {
        const newPassword = prompt('首次登录，请设置新密码（6-20位，需包含字母和数字）：');
        if (newPassword) {
            changePassword(newPassword);
        }
    }
}

// 修改密码
async function changePassword(newPassword) {
    const res = await apiPost('/api/auth/change-password', {
        old_password: newPassword,
        new_password: newPassword
    });
    
    if (res && res.success) {
        showToast('密码修改成功，请重新登录');
        setTimeout(() => logout(), 1500);
    } else {
        showToast(res?.message || '密码修改失败', 'error');
        checkNeedChangePassword();
    }
}

// 页面加载时初始化
document.addEventListener('DOMContentLoaded', () => {
    loadUserInfo();
    
    const logoutBtn = document.getElementById('logoutBtn');
    if (logoutBtn) {
        logoutBtn.addEventListener('click', logout);
    }
    
    // 学生端检查强制修改密码
    if (window.location.pathname.includes('/student/')) {
        checkNeedChangePassword();
    }
});