70 lines
2.0 KiB
JavaScript
70 lines
2.0 KiB
JavaScript
const http = require('http')
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const path = require('path')
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const fs = require('fs')
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const express = require('express')
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const cors = require('cors')
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const { WebSocketServer } = require('ws')
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const routes = require('./routes')
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const { getSituation } = require('./situationData')
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const swaggerUi = require('swagger-ui-express')
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const openApiSpec = require('./openapi')
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const app = express()
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const PORT = process.env.API_PORT || 3001
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app.set('trust proxy', 1)
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app.use(cors())
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app.use(express.json())
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// Swagger 文档
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app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(openApiSpec))
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app.use('/api', routes)
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app.get('/api/health', (_, res) => res.json({ ok: true }))
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app.post('/api/crawler/notify', (_, res) => {
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notifyCrawlerUpdate()
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res.json({ ok: true })
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})
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// 生产环境：提供前端静态文件
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const distPath = path.join(__dirname, '..', 'dist')
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if (fs.existsSync(distPath)) {
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app.use(express.static(distPath))
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app.get('*', (req, res, next) => {
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if (!req.path.startsWith('/api') && req.path !== '/ws') {
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res.sendFile(path.join(distPath, 'index.html'))
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} else next()
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})
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}
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const server = http.createServer(app)
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const wss = new WebSocketServer({ server, path: '/ws' })
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wss.on('connection', (ws) => {
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ws.send(JSON.stringify({ type: 'situation', data: getSituation() }))
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})
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function broadcastSituation() {
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try {
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const data = JSON.stringify({ type: 'situation', data: getSituation() })
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wss.clients.forEach((c) => {
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if (c.readyState === 1) c.send(data)
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})
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} catch (_) {}
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}
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setInterval(broadcastSituation, 3000)
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// 供爬虫调用：更新 situation.updated_at 并立即广播
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function notifyCrawlerUpdate() {
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try {
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const db = require('./db')
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db.prepare("INSERT OR REPLACE INTO situation (id, data, updated_at) VALUES (1, '{}', ?)").run(new Date().toISOString())
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broadcastSituation()
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} catch (_) {}
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}
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server.listen(PORT, () => {
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console.log(`API + WebSocket running at http://localhost:${PORT}`)
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console.log(`Swagger docs at http://localhost:${PORT}/api-docs`)
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})
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