Re-organize code

server/src/index.js

@@ -0,0 +1,24 @@
+import fs from 'fs'
+import express from 'express'
+import http from 'http'
+import YAML from 'yaml'
+import swaggerUI from 'swagger-ui-express'
+
+import socketServer from './api/socket.js'
+
+const port = 3000
+const app = express()
+const server = http.createServer(app)
+socketServer(server)
+
+const file = fs.readFileSync('./swagger.yaml', 'utf8')
+const swaggerDocument = YAML.parse(file)
+app.use('/api-docs', swaggerUI.serve, swaggerUI.setup(swaggerDocument))
+
+app.get('/', (req, res) => {
+  res.send('Hello World!')
+})
+
+server.listen(port, () => {
+  console.log(`Server listening at http://localhost:${port}`)
+})