272 lines
8.0 KiB
JavaScript
272 lines
8.0 KiB
JavaScript
const express = require('express');
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const multer = require('multer');
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const path = require('path');
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const fs = require('fs');
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const app = express();
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const PORT = process.env.PORT || 3000;
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// 中间件配置
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app.use(express.json());
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app.use(express.urlencoded({ extended: true }));
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app.use(express.static('public'));
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app.use('/uploads', express.static('uploads'));
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// 确保必要的目录存在
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const dataDir = path.join(__dirname, 'data');
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const uploadsDir = path.join(__dirname, 'uploads');
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if (!fs.existsSync(dataDir)) fs.mkdirSync(dataDir);
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if (!fs.existsSync(uploadsDir)) fs.mkdirSync(uploadsDir);
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// 数据文件路径
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const dataFile = path.join(dataDir, 'data.json');
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// 初始化数据文件
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if (!fs.existsSync(dataFile)) {
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fs.writeFileSync(dataFile, JSON.stringify({ records: [], nextId: 1 }, null, 2));
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}
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// 读取数据
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function readData() {
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const raw = fs.readFileSync(dataFile, 'utf-8');
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return JSON.parse(raw);
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}
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// 写入数据
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function writeData(data) {
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fs.writeFileSync(dataFile, JSON.stringify(data, null, 2));
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}
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// 配置 multer 图片上传
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const storage = multer.diskStorage({
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destination: (req, file, cb) => {
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cb(null, uploadsDir);
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},
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filename: (req, file, cb) => {
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const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
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cb(null, uniqueSuffix + path.extname(file.originalname));
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}
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});
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const upload = multer({
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storage: storage,
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limits: { fileSize: 5 * 1024 * 1024 }, // 5MB
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fileFilter: (req, file, cb) => {
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const allowedTypes = /jpeg|jpg|png|gif|webp/;
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const extname = allowedTypes.test(path.extname(file.originalname).toLowerCase());
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const mimetype = allowedTypes.test(file.mimetype);
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if (extname && mimetype) {
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cb(null, true);
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} else {
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cb(new Error('只支持图片格式：jpeg, jpg, png, gif, webp'));
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}
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}
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});
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// URL 格式校验
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function isValidUrl(string) {
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try {
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const url = new URL(string);
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return url.protocol === 'http:' || url.protocol === 'https:';
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} catch (_) {
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return false;
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}
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}
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// 格式化时间为精确到分钟
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function getFormattedTime() {
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const now = new Date();
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const year = now.getFullYear();
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const month = String(now.getMonth() + 1).padStart(2, '0');
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const day = String(now.getDate()).padStart(2, '0');
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const hours = String(now.getHours()).padStart(2, '0');
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const minutes = String(now.getMinutes()).padStart(2, '0');
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return `${year}-${month}-${day} ${hours}:${minutes}`;
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}
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// API: 获取所有记录
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app.get('/api/list', (req, res) => {
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try {
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const data = readData();
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res.json({ success: true, records: data.records });
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} catch (error) {
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res.status(500).json({ success: false, message: '读取数据失败: ' + error.message });
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}
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});
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// API: 普通用户提交记录（不含图片）
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app.post('/api/submit', (req, res) => {
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try {
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const { name, link, note } = req.body;
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// 数据校验
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if (!name || !name.trim()) {
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return res.status(400).json({ success: false, message: '人名不能为空' });
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}
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if (!link || !link.trim()) {
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return res.status(400).json({ success: false, message: '牌谱链接不能为空' });
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}
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if (!isValidUrl(link)) {
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return res.status(400).json({ success: false, message: '牌谱链接格式不正确' });
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}
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// 备注改为非必填，仅验证长度
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if (note && note.trim() && note.length > 200) {
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return res.status(400).json({ success: false, message: '备注说明不能超过 200 字' });
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}
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const data = readData();
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// 创建新记录（无图片）
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const newRecord = {
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id: data.nextId,
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submitTime: getFormattedTime(),
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name: name.trim(),
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link: link.trim(),
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note: note ? note.trim() : '',
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nagaLink: '',
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nagaNote: '',
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images: []
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};
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data.records.push(newRecord);
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data.nextId += 1;
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writeData(data);
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res.json({ success: true, message: '提交成功', record: newRecord });
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} catch (error) {
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res.status(500).json({ success: false, message: '提交失败: ' + error.message });
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}
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});
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// API: 管理员更新 Naga 字段和图片
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app.post('/api/admin/update', upload.array('images', 10), (req, res) => {
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try {
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const { id, nagaLink, nagaNote, existingImages } = req.body;
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if (!id) {
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return res.status(400).json({ success: false, message: '记录 ID 不能为空' });
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}
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// Naga 链接校验（如果填写）
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if (nagaLink && nagaLink.trim() && !isValidUrl(nagaLink)) {
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return res.status(400).json({ success: false, message: 'Naga 链接格式不正确' });
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}
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// Naga 说明字数校验（如果填写）
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if (nagaNote && nagaNote.length > 200) {
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return res.status(400).json({ success: false, message: 'Naga 说明不能超过 200 字' });
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}
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const data = readData();
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const record = data.records.find(r => r.id === parseInt(id));
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if (!record) {
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return res.status(404).json({ success: false, message: '记录不存在' });
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}
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// 处理新上传的图片
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const newImages = req.files ? req.files.map(file => `/uploads/${file.filename}`) : [];
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// 合并已有图片和新图片
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let allImages = [];
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if (existingImages) {
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// existingImages 可能是字符串或数组
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if (typeof existingImages === 'string') {
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try {
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allImages = JSON.parse(existingImages);
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} catch (e) {
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allImages = existingImages ? [existingImages] : [];
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}
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} else if (Array.isArray(existingImages)) {
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allImages = existingImages;
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}
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}
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allImages = [...allImages, ...newImages];
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// 更新 Naga 字段和图片
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record.nagaLink = nagaLink ? nagaLink.trim() : '';
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record.nagaNote = nagaNote ? nagaNote.trim() : '';
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record.images = allImages;
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writeData(data);
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res.json({ success: true, message: '更新成功', record: record });
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} catch (error) {
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res.status(500).json({ success: false, message: '更新失败: ' + error.message });
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}
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});
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// API: 管理员删除单张图片
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app.delete('/api/admin/delete-image', (req, res) => {
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try {
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const { id, imagePath } = req.body;
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if (!id || !imagePath) {
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return res.status(400).json({ success: false, message: '参数不完整' });
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}
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const data = readData();
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const record = data.records.find(r => r.id === parseInt(id));
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if (!record) {
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return res.status(404).json({ success: false, message: '记录不存在' });
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}
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// 从记录中移除图片路径
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const imageIndex = record.images.indexOf(imagePath);
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if (imageIndex > -1) {
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record.images.splice(imageIndex, 1);
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}
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// 删除物理文件
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const filePath = path.join(__dirname, imagePath.replace(/^\//, ''));
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if (fs.existsSync(filePath)) {
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fs.unlinkSync(filePath);
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}
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writeData(data);
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res.json({ success: true, message: '图片删除成功', record: record });
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} catch (error) {
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res.status(500).json({ success: false, message: '删除图片失败: ' + error.message });
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}
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});
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// API: 删除记录
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app.delete('/api/admin/delete/:id', (req, res) => {
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try {
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const id = parseInt(req.params.id);
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const data = readData();
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const index = data.records.findIndex(r => r.id === id);
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if (index === -1) {
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return res.status(404).json({ success: false, message: '记录不存在' });
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}
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// 删除关联的图片文件
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const record = data.records[index];
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if (record.images && record.images.length > 0) {
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record.images.forEach(imagePath => {
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const filePath = path.join(__dirname, imagePath.replace(/^\//, ''));
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if (fs.existsSync(filePath)) {
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fs.unlinkSync(filePath);
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}
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});
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}
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data.records.splice(index, 1);
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writeData(data);
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res.json({ success: true, message: '删除成功' });
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} catch (error) {
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res.status(500).json({ success: false, message: '删除失败: ' + error.message });
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}
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});
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// 启动服务器
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app.listen(PORT, '0.0.0.0', () => {
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console.log(`服务器运行在端口 ${PORT}`);
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console.log(`普通访客页面: http://localhost:${PORT}`);
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console.log(`管理员页面: http://localhost:${PORT}/admin.html`);
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}); |