Develop Reference

NodeJs Rest api: I can make calls in postman but the route returns as not found in url

When I make a post request to the /login endpoint in postman it works fine and returns all the information. However when I try to navigate to the end point in the url the route returns unfound. In the console I get GET http://localhost:5000/login 404 (Not Found). Why is the console returning for a get request? If I try to call the post request in axios I get xhr.js:177 POST http://localhost:3000/login 404 (Not Found).
app.js
require("dotenv").config();
const express = require('express');
const morgan = require('morgan');
const bodyParser = require('body-parser');
const router = express.Router();
const cors = require('cors');
const app = express();
app.use(cors())
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: true
}));
const mongoose = require('mongoose');
const connection = "password"
mongoose.connect(connection, {
useNewUrlParser: true,
useCreateIndex: true,
useUnifiedTopology: true
})
const clientRoutes = require('./routes/clientRoutes');
const traderRoutes = require('./routes/traderRoutes');
const loginRoute = require('./routes/loginRoute')
app.use('/', clientRoutes, traderRoutes, loginRoute);
// setup a friendly greeting for the root route
app.get('/', (req, res) => {
res.json({
message: 'Welcome to the REST API for Pave!',
});
});
// send 404 if no other route matched
app.use((req, res) => {
res.status(404).json({
message: 'Route Not Found',
});
});
// setup a global error handler
app.use((err, req, res, next) => {
if (enableGlobalErrorLogging) {
console.error(`Global error handler: ${JSON.stringify(err.stack)}`);
}
res.status(err.status || 500).json({
message: err.message,
error: {},
});
});
app.listen(5000, () => console.log('Listening on port 5000!'))
loginRoute.js
require("dotenv").config();
const express = require("express");
const router = express.Router();
const jwt = require("jsonwebtoken");
const bcryptjs = require("bcryptjs");
const Client = require("../models/clientSchema");
const Trader = require("../models/traderSchema");
function asyncHandler(callback) {
return async (req, res, next) => {
try {
await callback(req, res, next);
} catch (error) {
next(error);
console.log(error);
}
};
}
router.post('/login', asyncHandler(async (req, res, next) => {
let user = req.body;
const trader = await Trader.findOne({ emailAddress: req.body.emailAddress })
if (user && trader) {
console.log(trader)
let traderAuthenticated = await bcryptjs.compareSync(user.password, trader.password);
console.log(traderAuthenticated)
if (traderAuthenticated) {
console.log('Trader match')
const accessToken = jwt.sign(trader.toJSON(), process.env.ACCESS_TOKEN_SECRET)
res.location('/trader');
res.json({
trader: trader,
accessToken: accessToken
}).end();
} else {
res.status(403).send({ error: 'Login failed: Please try again'}).end();
}
} else if (user && !trader) {
const client = await Client.findOne({emailAddress: req.body.emailAddress})
console.log(client)
let clientAuthenticated = await bcryptjs.compareSync(user.password, client.password);
console.log(clientAuthenticated)
if (clientAuthenticated) {
console.log('Client match')
const accessToken = jwt.sign(client.toJSON(), process.env.ACCESS_TOKEN_SECRET)
res.location('/client');
res.json({
client: client,
accessToken: accessToken
});
} else {
res.status(403).send({ error: 'Login failed: Please try again'}).end();
}
} else {
res.status(403).send({ error: 'Login failed: Please try again'}).end();
}
})
);
module.exports = router;

You set POSTMAN to make a POST request, right? When you enter a url in the browser, that causes a GET request - and you have no route to manage this that I can see, but for the default Not found.

you are calling with axios with wrong port no. it should, POST method http://localhost:5000/login as your application is running on port 5000.
but you are calling, POST http://localhost:3000/login

Why the user = await User.findOne({ email }) returns null?

I'm setting up a login route and I decided to test it with postman and it worked but later when I was checking my DB configuration I found an error when I fixed the error the login test on postman doesn't work
so in my server.js file I have :
const express = require("express");
const connectDB = require("./config/db");
const app = express();
// Connect to MongoDB
connectDB();
// Initialize middleware
app.use(express.json());
// Define routes
app.use("/api/users", require("./routes/users"));
app.use("/api/auth", require("./routes/auth"));
app.use("/api/posts", require("./routes/posts"));
app.use("/api/profile", require('./routes/profile'));
// Create server
const PORT = process.env.PORT || 5000;
app.listen(PORT, () => console.log(`Server started on port ${PORT}`));
The connectDB function in config/db.js :
const mongoose = require("mongoose");
require('dotenv').config()
const connectDB = async () => {
try {
await mongoose.connect(process.env.MONGO_URI, {
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false,
useCreateIndex: true
});
console.log("Successfully connected to MongoDB");
} catch (err) {
console.error(err.message);
}
};
module.exports = connectDB;
In the auth.js route :
const express = require("express");
const router = express.Router();
const { check } = require("express-validator");
const {auth} = require('../middlewares/auth');
const {login} = require('../controllers/authController');
// #route: POST api/auth
// #desc: Login
// #access: Public
router.post("/",
[
check("email", "Email is required").not().isEmpty(),
check("password", "Password is required").not().isEmpty(),
],
login
);
module.exports = router;
The Auth controller in controllers/authController.js :
const { validationResult } = require("express-validator");
const bcrypt = require("bcryptjs");
const jwt = require("jsonwebtoken");
require('dotenv').config()
exports.login = async (req, res) => {
try {
// Check for validation errors
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(400).json({ errors: errors.array() });
}
// Check if user exists
const { email, password } = req.body;
const user = await User.findOne({ email });
if (!user) {
return res.status(400).json({ msg: "Invalid credentials : you must register" });
}
// If exists, check password
const isMatch = await bcrypt.compare(password, user.password);
if (!isMatch) {
return res.status(400).json({ msg: "Invalid credentials : wrong password" });
}
// Return jwt
const payload = {
user: {
id: user.id,
},
};
jwt.sign(payload,
process.env.JWT_SECRET,{expiresIn: 3600},(err, token) => {
if (err) throw err;
res.json({ token });
}
);
} catch (err) {
console.error(err.message);
res.status(500).send("There was an error with the server. Try again later.");
}
}
Everything looks great and when I try to login with postman it returns the "Invalid credentials : you must register" message from this code in authController.js ( when I console.log(user) it returns null ) :
const { email, password } = req.body;
const user = await User.findOne({ email });
if (!user) {
return res.status(400).json({ msg: "Invalid credentials : you must register" });
}
PS: At first, in the db configuration I forgot to add the mongo client options and everything worked and it returns the token in postman but after fixing the error I had the login problem

The content-type is not JSON compatible

With the following code Im trying to create a accessToken with the simple-oauth2 library in node.
I have the server.js and the app.js files. The problem is that every time I try to call the getToken method it returns the following error The content-type is not JSON compatible. Im calling the /token endpoint with postman where the request´s Content-Type is set to application/json.
Has anyone encountered this problem before?
server.js
'use strict';
const app = require('express')()
const bodyParser = require('body-parser')
app.use(bodyParser.json())
const port = 3000;
module.exports = (cb) => {
app.listen(port, (err) => {
if (err) return console.error(err);
console.log(`Express server listening at http://localhost:${port}`);
return cb({
app
});
});
};
app.js
const createApplication = require('./server');
const simpleOauthModule = require('simple-oauth2');
require('dotenv').config()
const credentials = {
client: {
id: process.env.CLIENT_ID,
secret: process.env.CLIENT_SECRET
},
auth: {
tokenHost: 'http://localhost:3000/test'
}
};
createApplication(({ app }) => {
app.post('/token', async (req, res) => {
const oauth2 = simpleOauthModule.create(credentials);
var contype = req.headers['content-type']; // <-- application/json
const tokenConfig = {
username: "test",
password: "1234"
};
try {
const result = await oauth2.ownerPassword.getToken(tokenConfig); //Error occuress
const accessToken = oauth2.accessToken.create(result);
console.log('Access Token: ', accessToken);
} catch (error) {
console.log('Access Token Error', error.message);
}
});
app.post('/test', async (req, res) => {
});
});

whenever I try to make a post request in postman i get error "Todo validation failed: task: Path `task` is required"

this is my app.js
const express = require("express");
const bodyParser = require("body-parser");
const cors = require("cors");
const mongoose = require("mongoose");
const inputRoutes = require("./routes/input");
const app = express();
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use(cors());
app.use(cors());
app.use((req, res, next) => {
res.setHeader("Acess-Control-Allow-Origin", "*");
res.setHeader(
"Acess-Control-Allow-Methods",
"OPTIONS ,GET ,POST ,PUT,PATCH , DELETE"
);
res.setHeader("Acess-Control-Allow-Headers", "Content-Type, Authorization");
next();
});
app.use("/input", inputRoutes);
mongoose
.connect("mongodb://localhost:27017/MEAN", { useNewUrlParser: true })
.then(result => {
app.listen(2400);
})
.catch(err => console.log(err));
this is my routes/input.js
const express = require("express");
const router = express.Router();
const inputController = require("../controller/input");
router.post("/todo", inputController.createTodos);
module.exports = router;
this is my controller,input.js
const Todo = require("../models/todos");
const { validationResult } = require("express-validator/check");
exports.createTodos = (req, res, next) => {
const errors = validationResult(req);
if (!errors.isEmpty()) {
const error = new Error("validation failed due to incorrect data");
error.statusCode = 442;
throw error;
}
const task = req.body.task;
const status = req.body.status;
console.log(task);
console.log(status);
const todo = new Todo({
task: task,
status: status
});
todo
.save()
.then(result => {
console.log(task);
res.status(201).json({
message: "post created sucessfully",
post: result
});
})
.catch(err => {
if (!err.statusCode) {
err.statusCode = 500;
}
next(err);
});
};
this is my model.js
const mongoose = require("mongoose");
const Schema = mongoose.Schema;
const todoSchema = new Schema(
{
task: {
type: String,
required: true
},
status: {
type: Boolean,
default: false
}
},
{ timestamps: true }
);
module.exports = mongoose.model("Todo", todoSchema);

You need to send JSON request in the postman first choosing raw option, and then json in the right dropdown.
Also you seem to use express-validator package, but you don't use it in router.
In the router you can use it like this:
const express = require("express");
const router = express.Router();
const { check } = require("express-validator");
const inputController = require("../controller/input");
router.post("/todo", [
check("task")
.not()
.isEmpty()
], inputController.createTodos);
module.exports = router;
Also in controller you should import the validationResult from express-validator,
and validate the result like this:
const { validationResult } = require('express-validator');
exports.createTodos = (req, res, next) => {
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(422).json({ errors: errors.array() });
}
....
}

how to actually use the data requested using discord oauth2

I am not exactly sure how to go about using/accessing the data requested from a discord oauth2 authentication. I have requested to access the guilds the user is in and the username and avatar of the user. I get a successful authentication, but my question is how do i use and access that data? This is my code currently:
server.js
const express = require('express');
const path = require('path');
const app = express();
app.use('/static', express.static(path.join(__dirname, 'static')));
app.get('/', (req, res) => {
res.status(200).sendFile(path.join(__dirname, 'index.html'));
});
app.listen(50451, () => {
console.info('Running on port 50451');
});
app.use('/api/discord', require('./api/discord'));
app.use((err, req, res, next) => {
switch (err.message) {
case 'NoCodeProvided':
return res.status(400).send({
status: 'ERROR',
error: err.message,
});
default:
return res.status(500).send({
status: 'ERROR',
error: err.message,
});
}
});
discord.js
const express = require('express');
const dotenv = require('dotenv').config()
const fetch = require('node-fetch');
const btoa = require('btoa');
const { catchAsync } = require('../utils');
const router = express.Router();
const scopes = ['identify', 'guilds'];
const CLIENT_ID = process.env.CLIENT_ID;
const CLIENT_SECRET = process.env.CLIENT_SECRET;
const redirect =
encodeURIComponent('http://localhost:50451/api/discord/callback');
router.get('/login', (req, res) => {
res.redirect(`https://discordapp.com/api/oauth2/authorize?client_id=${CLIENT_ID}&redirect_uri=${redirect}&response_type=code&scope=identify%20guilds`);
});
router.get('/callback', catchAsync(async (req, res) => {
if (!req.query.code) throw new Error('NoCodeProvided');
const code = req.query.code;
const creds = btoa(`${CLIENT_ID}:${CLIENT_SECRET}`);
const response = await fetch(`https://discordapp.com/api/oauth2/token?grant_type=authorization_code&code=${code}&redirect_uri=${redirect}`,
{
method: 'POST',
headers: {
Authorization: `Basic ${creds}`,
},
});
const json = await response.json();
res.redirect(`/success/?token=${json.access_token}`);
}));
module.exports = router;
Any help will be greatly appreciated. Thanks!

It's almost the same as the way you use the req.query.code to get the access_token.
const fetchDiscordUserInfo = await fetch('http://discordapp.com/api/users/#me', {
headers: {
Authorization: `Bearer ${json.access_token}`,
}
});
const userInfo = await fetchDiscordUserInfo.json();
yourUserId = `${userInfo.id}`;
yourUserName = `${userInfo.username}`;
// or simply...
console.log(userInfo);