implement middlewares in api b00tc4mp#84

staff/marti-herms/project/V-HUB/api/.gitignore

@@ -0,0 +1,2 @@
+.env
+node_modules

staff/marti-herms/project/V-HUB/api/handlers/authenticateUserHandler.js

@@ -0,0 +1 @@
+export default {}

staff/marti-herms/project/V-HUB/api/handlers/index.js

@@ -0,0 +1,9 @@
+import authenticateUserHandler from './authenticateUserHandler.js'
+import registerUserHandler from './registerUserHandler.js'
+
+const handle = {
+    authenticateUser: authenticateUserHandler,
+    registerUser: registerUserHandler
+}
+
+export default handle

staff/marti-herms/project/V-HUB/api/handlers/registerUserHandler.js

@@ -0,0 +1 @@
+export default {}

staff/marti-herms/project/V-HUB/api/index.js

@@ -0,0 +1,26 @@
+import 'dotenv/config'
+import express from 'express'
+
+import { mongoose } from 'core'
+
+import { cors, jsonBodyParser, jwtVerifier, errorHandler } from './middleware'
+
+import handle from './handlers'
+
+mongoose.connect(process.env.MONGODB_URI)
+    .then(() => {
+        console.info(`API connected to ${process.env.MONGODB_URI}`)
+
+        const api = express()
+
+        api.use(cors)
+
+        api.post('/users', jsonBodyParser, handle.registerUser)
+
+        api.post('/users/auth', jsonBodyParser, handle.authenticateUser)
+
+        api.use(errorHandler)
+
+        api.listen(process.env.PORT, () => console.info(`API listening on PORT ${process.env.PORT}`))
+    })
+    .catch(error => console.error(error))

staff/marti-herms/project/V-HUB/api/middleware/cors.js

@@ -0,0 +1,7 @@
+export default (req, res, next) => {
+    res.setHeader('Access-Control-Allow-Origin', '*')
+    res.setHeader('Access-Control-Allow-Headers', '*')
+    res.setHeader('Access-Control-Allow-Methods', '*')
+
+    next()
+}

staff/marti-herms/project/V-HUB/api/middleware/errorHandler.js

@@ -0,0 +1,24 @@
+import { errors } from 'com'
+
+const { NotFoundError, CredentialsError, DuplicityError, SessionError, ValidationError } = errors
+
+export default (error, req, res, next) => {
+    let status = 500
+
+    if (error instanceof NotFoundError)
+        status = 404
+
+    else if (error instanceof CredentialsError || error instanceof DuplicityError)
+        ststus = 409
+
+    else if (error instanceof OwnershipError)
+        status = 403
+
+    else if (error instanceof ValidationError)
+        status = 400
+
+    else if (error instanceof SessionError)
+        status = 498
+
+    res.status(status).json({ error: error.constructor.name, message: error.message })
+}

staff/marti-herms/project/V-HUB/api/middleware/index.js

@@ -0,0 +1,11 @@
+import cors from './cors.js'
+import jsonBodyParser from './jsonBodyParser.js'
+import jwtVerifier from './jwtVerifier.js'
+import errorHandler from './errorHandler.js'
+
+export {
+    cors,
+    jsonBodyParser,
+    jwtVerifier,
+    errorHandler
+}

staff/marti-herms/project/V-HUB/api/middleware/jsonBodyParser.js

@@ -0,0 +1,11 @@
+export default (req, res, next) => {
+    req.setEncoding('utf-8')
+
+    req.on('data', json => {
+        const body = JSON.parse(json)
+
+        req.body = body
+
+        next()
+    })
+}

staff/marti-herms/project/V-HUB/api/middleware/jwtVerifier.js

@@ -0,0 +1,26 @@
+import 'dotenv/config'
+import jwt from 'jsonwebtoken'
+
+import { errors } from 'com'
+
+const { SessionError } = errors
+
+export default (req, res, next) => {
+    const { authorization } = req.headers
+
+    const token = authorization.slice(7)
+
+    jwt.verifier(token, process.env.JWT_SECRET, (error, payload) => {
+        if (error) {
+            res.status(498).json({ error: SessionError.name, message: error.message })
+
+            return
+        }
+
+        const { sub: userId } = payload
+
+        req.userId = userId
+
+        next()
+    })
+}

staff/marti-herms/project/V-HUB/api/package.json

@@ -4,15 +4,22 @@
   "main": "index.js",
   "type": "module",
   "scripts": {
+    "start": "node .",
+    "watch": "node --watch .",
+    "inspect": "node --inspect-brk .",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
   "description": "",
   "dependencies": {
-    "dotenv": "^16.4.5",
+    "com": "file:../com",
+    "core": "file:../core",
     "express": "^4.19.2",
     "jsonwebtoken": "^9.0.2"
+  },
+  "devDependencies": {
+    "dotenv": "^16.4.5"
   }
 }

staff/marti-herms/project/V-HUB/com/errors.js

@@ -38,12 +38,21 @@ class CredentialsError extends Error {
     }
 }
 
+class SessionError extends Error {
+    constructor(message) {
+        super(message)
+
+        this.name = this.constructor.name
+    }
+}
+
 const errors = {
     ValidationError,
     SystemError,
     DuplicityError,
     NotFoundError,
-    CredentialsError
+    CredentialsError,
+    SessionError
 }
 
 export default errors

staff/marti-herms/project/V-HUB/core/index.js

@@ -2,7 +2,7 @@ import mongoose from 'mongoose'
 import logic from './logic'
 import data from './data'
 
-export default {
+export {
     mongoose,
     logic,
     data

staff/marti-herms/project/V-HUB/core/logic/index.js

@@ -1 +1,9 @@
-export default {}
+import authenticateUser from './authenticateUser.js'
+import registerUser from './registerUser.js'
+
+const logic = {
+    authenticateUser,
+    registerUser
+}
+
+export default logic