/
signup.js
151 lines (128 loc) · 3.02 KB
/
signup.js
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const express = require('express');
const { check, validationResult } = require('express-validator/check');
const { insert } = require('./db');
/**
* Higher-order fall sem umlykur async middleware með villumeðhöndlun.
*
* @param {function} fn Middleware sem grípa á villur fyrir
* @returns {function} Middleware með villumeðhöndlun
*/
function catchErrors(fn) {
return (req, res, next) => fn(req, res, next).catch(next);
}
const router = express.Router();
// Fylki af öllum validations fyrir umsókn
const validations = [
check('name')
.isLength({ min: 2 })
.withMessage('Name has to be at least 2 letters long'),
check('email')
.isLength({ min: 1 })
.withMessage('email can\'t be empty'),
check('email')
.isEmail()
.withMessage('Not valid email'),
check('phone')
.matches(/^[0-9]{3}( |-)?[0-9]{4}$/)
.withMessage('Phone number has to be 7 digits long'),
check('text')
.isLength({ min: 20 })
.withMessage('About has to be at least 20 letters long'),
];
/**
* Route handler for the signup form.
*
* @param {object} req Request object
* @param {object} res Response object
* @returns {string}
*/
function form(req, res) {
const data = {
title: 'User',
name: '',
email: '',
phone: '',
text: '',
errors: [],
};
res.render('form', data);
}
/**
* Route handler sem athugar stöðu á umsókn og birtir villur ef einhverjar,
* sendir annars áfram í næsta middleware.
*
* @param {object} req Request hlutur
* @param {object} res Response hlutur
* @param {function} next Næsta middleware
* @returns Næsta middleware ef í lagi, annars síðu með villum
*/
function showErrors(req, res, next) {
const {
body: {
name = '',
email = '',
phone = '',
text = '',
} = {},
} = req;
const data = {
name,
email,
phone,
text,
};
const validation = validationResult(req);
if (!validation.isEmpty()) {
const errors = validation.array();
data.errors = errors;
data.title = 'User not valid';
return res.render('form', data);
}
return next();
}
/**
* Ósamstilltur route handler sem vistar gögn í gagnagrunn og sendir
* á þakkarsíðu
*
* @param {object} req Request hlutur
* @param {object} res Response hlutur
*/
async function formPost(req, res) {
const {
body: {
name = '',
email = '',
phone = '',
text = '',
} = {},
} = req;
const data = {
name,
email,
phone,
text,
};
await insert(data);
return res.redirect('/thanks');
}
/**
* Route handler fyrir þakkarsíðu.
*
* @param {object} req Request hlutur
* @param {object} res Response hlutur
*/
function thanks(req, res) {
return res.render('thanks', { title: 'Takk fyrir umsóknina' });
}
router.get('/', form);
router.get('/thanks', thanks);
router.post(
'/',
// Athugar hvort form sé í lagi
validations,
// Ef form er ekki í lagi, birtir upplýsingar um það
showErrors,
// Senda gögn í gagnagrunn
catchErrors(formPost),
);
module.exports = router;