Code files

Chapter05/creating-an-http-server/rest-server-dynamic-content/index.js

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+'use strict'
+
+const http = require('http')
+const qs = require('querystring')
+const url = require('url')
+
+const host = process.env.HOST || '0.0.0.0'
+const port = process.env.PORT || 8080
+
+const userList = [
+  {'id': 1, 'first_name': 'Bob', 'second_name': 'Smith', type: 'red'},
+  {'id': 2, 'first_name': 'David', 'second_name': 'Clements', type: 'blue'}
+]
+
+const server = http.createServer((req, res) => {
+  if (req.method !== 'GET') return error(res, 405)
+  if (req.url === '/') return index(res)
+  const {pathname, query} = url.parse(req.url)
+  if (pathname === '/users') return users(query, res)
+  
+  error(res, 404)
+})
+
+function error (res, code) {
+  res.statusCode = code
+  res.end(`{"error": "${http.STATUS_CODES[code]}"}`)
+}
+
+function users (query, res) {
+  const {type} = qs.parse(query)
+  const list = !type ? userList : userList.filter((user) => user.type === type)
+  res.end(`{"data": ${JSON.stringify(list)}}`) 
+}
+
+function index (res) {
+  res.end('{"name": "my-rest-server", "version": 0}')
+}
+
+server.listen(port, host)