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Login Controller for Express Route
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| const Promise = require('bluebird'); | |
| const bcrypt = require('bcrypt'); | |
| const User = require('../models/user'); | |
| const { LoginError } = require('../errors'); | |
| function checkPassword(password, hash) { | |
| return Promise.try(() => { | |
| return bcrypt.compare(password, hash); | |
| }).then((result) => { | |
| if (!result) { | |
| throw new LoginError('invalid password'); | |
| } | |
| }) | |
| } | |
| function authenticateUser(username, password) { | |
| return Promise.try(() => { | |
| // this will return a single object, not an array. it will also throw if the username is invalid | |
| return User.findOne({ username }); | |
| }).tap((user) => { | |
| return checkPassword(password, user.password); | |
| }).then((user) => { | |
| // return something actually related to the user here? | |
| }) | |
| } | |
| function login(req, res, next) { | |
| const { username, password } = req.body; | |
| Promise.try(() => { | |
| return authenticateUser(username, password); | |
| }).then((user) => { | |
| res.json({ | |
| message: 'successful login', | |
| /* add some user data? */ | |
| }); | |
| }).catch(InvalidLogin, (err) => { // catches only instances of InvalidLogin | |
| return res.status(403).json({ message: 'invalid login' }); | |
| }).catch(next); // everything else goes to global error handler | |
| } | |
| module.exports = login; |
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