592 lines
19 KiB
JavaScript
592 lines
19 KiB
JavaScript
class AdminDashboard {
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constructor() {
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// 动态设置API基础URL，支持file:///协议和localhost:3000访问
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this.apiBase = window.location.protocol === 'file:' ? 'http://localhost:3000/api' : '/api';
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this.currentUser = null;
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this.stats = {};
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this.users = [];
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this.students = [];
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this.teachers = [];
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this.init();
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}
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async init() {
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// 检查登录状态
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if (!await this.checkAuth()) {
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window.location.href = '/frontend/html/login.html';
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return;
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}
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// 加载用户信息
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await this.loadUserInfo();
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// 加载统计数据
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await this.loadStats();
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// 加载用户数据
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await this.loadUsers();
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// 绑定事件
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this.bindEvents();
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// 更新界面
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this.updateUI();
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// 初始化图表
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this.initCharts();
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}
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async checkAuth() {
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try {
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const response = await fetch(`${this.apiBase}/auth/me`, {
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credentials: 'include'
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});
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if (!response.ok) {
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return false;
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}
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const data = await response.json();
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return data.success && data.user.role === 'admin';
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} catch (error) {
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console.error('认证检查失败:', error);
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return false;
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}
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}
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async loadUserInfo() {
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try {
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const response = await fetch(`${this.apiBase}/auth/me`, {
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credentials: 'include'
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});
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if (response.ok) {
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const data = await response.json();
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if (data.success) {
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this.currentUser = data.user;
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}
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}
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} catch (error) {
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console.error('加载用户信息失败:', error);
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}
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}
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async loadStats() {
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try {
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const response = await fetch(`${this.apiBase}/admin/stats`, {
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credentials: 'include'
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});
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if (response.ok) {
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const data = await response.json();
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if (data.success) {
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this.stats = data.stats;
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this.updateStatsUI();
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}
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}
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} catch (error) {
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console.error('加载统计数据失败:', error);
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this.showNotification('加载统计数据失败', 'error');
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}
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}
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async loadUsers() {
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try {
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const response = await fetch(`${this.apiBase}/admin/users`, {
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credentials: 'include'
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});
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if (response.ok) {
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const data = await response.json();
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if (data.success) {
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this.users = data.users;
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this.renderUsersTable();
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}
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}
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} catch (error) {
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console.error('加载用户数据失败:', error);
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this.showNotification('加载用户数据失败', 'error');
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}
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}
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updateStatsUI() {
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// 更新统计卡片
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const statElements = {
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'totalUsers': 'totalUsers',
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'totalStudents': 'totalStudents',
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'totalTeachers': 'totalTeachers',
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'totalCourses': 'totalCourses',
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'totalGrades': 'totalGrades',
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'avgScore': 'avgScore'
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};
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Object.entries(statElements).forEach(([key, elementId]) => {
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const element = document.getElementById(elementId);
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if (element && this.stats[key] !== undefined) {
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element.textContent = this.stats[key];
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}
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});
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// 更新时间
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const timeElement = document.getElementById('currentTime');
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if (timeElement) {
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timeElement.textContent = new Date().toLocaleString();
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}
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}
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renderUsersTable() {
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const tableBody = document.getElementById('usersTableBody');
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if (!tableBody) return;
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if (this.users.length === 0) {
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tableBody.innerHTML = `
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<tr>
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<td colspan="7" class="text-center">
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<div class="no-data">
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<i class="fas fa-info-circle"></i>
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<p>暂无用户数据</p>
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</div>
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</td>
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</tr>
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`;
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return;
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}
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tableBody.innerHTML = this.users.map(user => {
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const roleClass = this.getRoleClass(user.role);
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return `
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<tr>
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<td><input type="checkbox" class="user-checkbox" data-id="${user.id}"></td>
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<td>${user.user_id}</td>
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<td>${user.full_name}</td>
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<td><span class="role-badge ${roleClass}">${user.role}</span></td>
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<td>${user.class_name || 'N/A'}</td>
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<td>${user.email || 'N/A'}</td>
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<td>
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<div class="action-buttons">
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<button class="btn-edit" data-id="${user.id}">
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<i class="fas fa-edit"></i> 编辑
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</button>
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<button class="btn-delete" data-id="${user.id}">
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<i class="fas fa-trash"></i> 删除
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</button>
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</div>
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</td>
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</tr>
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`;
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}).join('');
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}
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getRoleClass(role) {
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switch (role) {
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case 'admin': return 'role-admin';
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case 'teacher': return 'role-teacher';
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case 'student': return 'role-student';
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default: return 'role-default';
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}
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}
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bindEvents() {
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// 导航菜单点击
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document.querySelectorAll('.nav-link').forEach(link => {
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link.addEventListener('click', (e) => {
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e.preventDefault();
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const page = link.dataset.page;
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this.loadPage(page);
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});
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});
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// 搜索按钮
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document.getElementById('searchBtn')?.addEventListener('click', () => {
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this.handleSearch();
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});
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// 重置按钮
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document.getElementById('resetBtn')?.addEventListener('click', () => {
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this.resetFilters();
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});
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// 添加用户按钮
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document.getElementById('addUserBtn')?.addEventListener('click', () => {
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this.addUser();
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});
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// 导出按钮
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document.getElementById('exportBtn')?.addEventListener('click', () => {
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this.exportUsers();
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});
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// 批量删除按钮
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document.getElementById('batchDeleteBtn')?.addEventListener('click', () => {
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this.batchDeleteUsers();
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});
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// 表格操作按钮事件委托
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document.addEventListener('click', (e) => {
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if (e.target.closest('.btn-edit')) {
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const userId = e.target.closest('.btn-edit').dataset.id;
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this.editUser(userId);
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}
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if (e.target.closest('.btn-delete')) {
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const userId = e.target.closest('.btn-delete').dataset.id;
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this.deleteUser(userId);
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}
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});
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// 退出登录
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document.getElementById('logoutBtn')?.addEventListener('click', () => {
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this.handleLogout();
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});
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// 刷新按钮
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document.getElementById('refreshBtn')?.addEventListener('click', () => {
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this.refreshData();
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});
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}
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async loadPage(page) {
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// 这里可以实现页面切换逻辑
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// 暂时使用简单跳转
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switch (page) {
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case 'users':
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window.location.href = '/frontend/html/user_management.html';
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break;
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case 'students':
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window.location.href = '/frontend/html/student_management.html';
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break;
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case 'teachers':
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// 可以跳转到教师管理页面
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break;
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case 'grades':
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window.location.href = '/frontend/html/grade_management.html';
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break;
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case 'settings':
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// 可以跳转到系统设置页面
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break;
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}
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}
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handleSearch() {
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const userId = document.getElementById('userIdFilter')?.value || '';
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const name = document.getElementById('nameFilter')?.value || '';
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const role = document.getElementById('roleFilter')?.value || '';
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const className = document.getElementById('classFilter')?.value || '';
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// 这里可以实现搜索逻辑
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this.showNotification('搜索功能待实现', 'info');
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}
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resetFilters() {
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document.getElementById('userIdFilter').value = '';
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document.getElementById('nameFilter').value = '';
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document.getElementById('roleFilter').value = '';
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document.getElementById('classFilter').value = '';
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// 重新加载数据
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this.loadUsers();
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}
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async addUser() {
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// 这里可以打开添加用户模态框
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const userData = {
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user_id: prompt('请输入用户ID:'),
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full_name: prompt('请输入姓名:'),
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role: prompt('请输入角色 (admin/teacher/student):'),
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email: prompt('请输入邮箱:'),
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class_name: prompt('请输入班级 (学生/教师可选):')
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};
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if (!userData.user_id || !userData.full_name || !userData.role) {
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this.showNotification('用户ID、姓名和角色为必填项', 'error');
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return;
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}
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try {
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const response = await fetch(`${this.apiBase}/admin/users`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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credentials: 'include',
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body: JSON.stringify(userData)
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});
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const data = await response.json();
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if (data.success) {
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this.showNotification('用户添加成功', 'success');
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await this.loadUsers();
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} else {
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this.showNotification(data.message || '添加失败', 'error');
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}
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} catch (error) {
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console.error('添加用户失败:', error);
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this.showNotification('添加用户失败', 'error');
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}
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}
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async exportUsers() {
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try {
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const response = await fetch(`${this.apiBase}/admin/users/export`, {
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credentials: 'include'
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});
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if (response.ok) {
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const blob = await response.blob();
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const url = window.URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url;
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a.download = `用户列表_${new Date().toISOString().split('T')[0]}.xlsx`;
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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window.URL.revokeObjectURL(url);
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}
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} catch (error) {
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console.error('导出失败:', error);
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this.showNotification('导出失败', 'error');
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}
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}
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async batchDeleteUsers() {
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const checkboxes = document.querySelectorAll('.user-checkbox:checked');
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if (checkboxes.length === 0) {
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this.showNotification('请选择要删除的用户', 'warning');
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return;
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}
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if (!confirm(`确定要删除选中的 ${checkboxes.length} 个用户吗？`)) {
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return;
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}
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const userIds = Array.from(checkboxes).map(cb => cb.dataset.id);
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try {
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const response = await fetch(`${this.apiBase}/admin/users/batch`, {
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method: 'DELETE',
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headers: { 'Content-Type': 'application/json' },
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credentials: 'include',
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body: JSON.stringify({ userIds })
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});
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const data = await response.json();
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if (data.success) {
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this.showNotification(`成功删除 ${userIds.length} 个用户`, 'success');
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await this.loadUsers();
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} else {
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this.showNotification(data.message || '删除失败', 'error');
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}
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} catch (error) {
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console.error('批量删除失败:', error);
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this.showNotification('批量删除失败', 'error');
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}
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}
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async editUser(userId) {
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const user = this.users.find(u => u.id == userId);
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if (!user) return;
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// 这里可以打开编辑模态框
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const newName = prompt('请输入新的姓名:', user.full_name);
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if (newName === null) return;
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const newRole = prompt('请输入新的角色:', user.role);
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if (newRole === null) return;
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try {
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const response = await fetch(`${this.apiBase}/admin/users/${userId}`, {
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method: 'PUT',
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headers: { 'Content-Type': 'application/json' },
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credentials: 'include',
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body: JSON.stringify({
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full_name: newName,
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role: newRole,
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email: user.email,
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class_name: user.class_name
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})
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});
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const data = await response.json();
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if (data.success) {
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this.showNotification('用户更新成功', 'success');
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await this.loadUsers();
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} else {
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this.showNotification(data.message || '更新失败', 'error');
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}
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} catch (error) {
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console.error('更新用户失败:', error);
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this.showNotification('更新用户失败', 'error');
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}
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}
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async deleteUser(userId) {
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if (!confirm('确定要删除这个用户吗？')) {
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return;
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}
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try {
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const response = await fetch(`${this.apiBase}/admin/users/${userId}`, {
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method: 'DELETE',
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credentials: 'include'
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});
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const data = await response.json();
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if (data.success) {
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this.showNotification('用户删除成功', 'success');
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await this.loadUsers();
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} else {
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this.showNotification(data.message || '删除失败', 'error');
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}
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} catch (error) {
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console.error('删除用户失败:', error);
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this.showNotification('删除用户失败', 'error');
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}
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}
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async handleLogout() {
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try {
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const response = await fetch(`${this.apiBase}/auth/logout`, {
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method: 'POST',
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credentials: 'include'
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});
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if (response.ok) {
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window.location.href = '/html/login.html';
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}
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} catch (error) {
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console.error('退出登录失败:', error);
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}
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}
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async refreshData() {
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await this.loadStats();
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await this.loadUsers();
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this.showNotification('数据已刷新', 'success');
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}
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updateUI() {
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// 更新用户信息
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if (this.currentUser) {
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const userInfoElements = document.querySelectorAll('.user-info');
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userInfoElements.forEach(el => {
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el.textContent = `${this.currentUser.full_name} (${this.currentUser.role})`;
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});
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}
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}
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async initCharts() {
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// 加载Chart.js库
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await this.loadChartLibrary();
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// 初始化用户分布饼图
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this.initUserDistributionChart();
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// 初始化成绩分布柱状图
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this.initGradeDistributionChart();
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}
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showNotification(message, type = 'info') {
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// 创建通知元素
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const notification = document.createElement('div');
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notification.className = `notification notification-${type}`;
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notification.innerHTML = `
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<i class="fas fa-${type === 'success' ? 'check-circle' : type === 'error' ? 'exclamation-circle' : type === 'warning' ? 'exclamation-triangle' : 'info-circle'}"></i>
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<span>${message}</span>
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<button class="notification-close">×</button>
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`;
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// 添加到页面
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document.body.appendChild(notification);
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// 添加关闭事件
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notification.querySelector('.notification-close').addEventListener('click', () => {
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notification.remove();
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});
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// 自动移除
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setTimeout(() => {
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if (notification.parentNode) {
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notification.remove();
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}
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}, 5000);
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}
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async loadChartLibrary() {
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if (typeof Chart !== 'undefined') return;
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return new Promise((resolve, reject) => {
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const script = document.createElement('script');
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script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.9.1/dist/chart.min.js';
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script.onload = resolve;
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script.onerror = reject;
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document.head.appendChild(script);
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});
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}
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initUserDistributionChart() {
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const ctx = document.getElementById('userDistributionChart');
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if (!ctx) return;
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// 模拟数据
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const data = {
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labels: ['学生', '教师', '管理员'],
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datasets: [{
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data: [this.stats.totalStudents || 100, this.stats.totalTeachers || 20, 1],
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backgroundColor: [
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'rgba(54, 162, 235, 0.8)',
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'rgba(255, 206, 86, 0.8)',
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'rgba(255, 99, 132, 0.8)'
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]
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}]
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};
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new Chart(ctx, {
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type: 'pie',
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data: data,
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options: {
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responsive: true,
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plugins: {
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legend: {
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position: 'bottom'
|
||
}
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
initGradeDistributionChart() {
|
||
const ctx = document.getElementById('gradeDistributionChart');
|
||
if (!ctx) return;
|
||
|
||
// 模拟数据
|
||
const data = {
|
||
labels: ['A', 'B', 'C', 'D', 'F'],
|
||
datasets: [{
|
||
label: '成绩分布',
|
||
data: [25, 35, 20, 15, 5],
|
||
backgroundColor: [
|
||
'rgba(75, 192, 192, 0.8)',
|
||
'rgba(54, 162, 235, 0.8)',
|
||
'rgba(255, 206, 86, 0.8)',
|
||
'rgba(255, 159, 64, 0.8)',
|
||
'rgba(255, 99, 132, 0.8)'
|
||
]
|
||
}]
|
||
};
|
||
|
||
new Chart(ctx, {
|
||
type: 'bar',
|
||
data: data,
|
||
options: {
|
||
responsive: true,
|
||
scales: {
|
||
y: {
|
||
beginAtZero: true,
|
||
ticks: {
|
||
stepSize: 10
|
||
}
|
||
}
|
||
}
|
||
}
|
||
});
|
||
}
|
||
}
|