app: Use global model

app/api/driver.js

@@ -6,12 +6,10 @@
 
 const express = require('express')
 
-const Hub = require('../model/Hub.js')
+const hub = require('../model/hub.js')
 
 let app = express.Router()
 
-let hub = new Hub()
-
 app.get('/find', function (req, res) {
   let location = req.query.location
 
@@ -20,16 +18,6 @@ app.get('/find', function (req, res) {
   })
 })
 
-app.get('/:id', function (req, res) {
-  let id = req.params.id
-
-  if (hub.drivers[id]) {
-    res.json({})
-  } else {
-    res.status(404).json({ 'error': 'Driver is not found' })
-  }
-})
-
 app.post('/', async function (req, res) {
   let id = req.body.driver_id
   let locations = req.body.locations

app/model/Hub.js → app/model/hub.js

@@ -93,4 +93,4 @@ class Hub {
   }
 }
 
-module.exports = Hub
+module.exports = new Hub()