commit 2ecbce978de06f9b8836cfb481bb55859144bae6 Author: Thomas Forgione Date: Tue Jan 24 17:06:04 2023 +0100 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..15de390 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +node_modules +data diff --git a/html/index.html b/html/index.html new file mode 100644 index 0000000..f2fa8d6 --- /dev/null +++ b/html/index.html @@ -0,0 +1,17 @@ + + + + + Hello world! + + +

Hello world!

+ +

+ + +

+ + + + diff --git a/js/main.js b/js/main.js new file mode 100644 index 0000000..da58462 --- /dev/null +++ b/js/main.js @@ -0,0 +1,33 @@ +// On récupère l'élément HTML dont l'id est username (champ que l'utilisateur va remplir). +let usernameInput = document.getElementById('username'); + +// On récupère l'élément HTML dont l'id est button (bouton à cliquer pour valider la requête). +let button = document.getElementById('button'); + +// Ajout du listener pour déclencher le traitement lorsque le bouton est cliqué. +button.addEventListener('click', function() { + + // Création de la requête HTTP à envoyer au serveur. + let xhr = new XMLHttpRequest(); + + // Préparation de la requête pour l'envoi en POST vers l'url. + xhr.open('POST', '/data'); + + // Si on envoie les données de manière classique, il faut configurer le header de cette façon. + xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); + + // Ajout du listener pour déclencer la suite lorsque la requête sera terminée. + xhr.onreadystatechange = function() { + + // Si la requête est terminée, et que la réponse n'est pas une erreur. + if (xhr.readyState === XMLHttpRequest.DONE && xhr.status === 200) { + + console.log(xhr.responseText); + + } + + } + + // Envoi de la requête vers le serveur, avec les données. + xhr.send('username=' + usernameInput.value); +}); diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..7eae4c4 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,660 @@ +{ + "name": "thomas", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "thomas", + "version": "1.0.0", + "license": "ISC", + "dependencies": { + "body-parser": "^1.20.1", + "cookie-session": "^2.0.0", + "express": "^4.18.2" + } + }, + "node_modules/accepts": { + "version": "1.3.8", + "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz", + "integrity": 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exit 1" + }, + "author": "", + "license": "ISC", + "dependencies": { + "body-parser": "^1.20.1", + "cookie-session": "^2.0.0", + "express": "^4.18.2" + } +} diff --git a/server.js b/server.js new file mode 100644 index 0000000..c7217ce --- /dev/null +++ b/server.js @@ -0,0 +1,61 @@ +async function main() { + // Imports et constantes. + const fs = require('fs').promises; + const express = require('express'); + const bodyParser = require('body-parser') + const ip = '0.0.0.0'; + const port = 8000; + + const app = express(); + + let id = 1; + + // Permet de récupérer les données venant du client. + app.use(bodyParser.urlencoded({ extended: true })); + + // Page d'accueil. + app.get('/', function(req, res) { + // On envoie le contenu du fichier index.html. + return res.sendFile(__dirname + '/html/index.html'); + }); + + // Envoi du fichier main.js + app.get('/main.js', function(req, res) { + return res.sendFile(__dirname + '/js/main.js'); + }); + + // Route de récupération des données. + app.post('/data', async function(req, res) { + // Les données sont dans l'objet req.body. + console.log(req.body); + + // Ouverture du fichier en mode append. + let file = await fs.open(__dirname + '/data/users.csv', 'a'); + + // Ajout d'une ligne. + file.write(id++ + ',' + req.body.username + '\n'); + + // Envoi de la réponse pour terminer la requête. + res.send('Ok'); + }); + + // Création du dossier où les données seront stockées. + try { + + await fs.mkdir(__dirname + '/data'); + + } catch (err) { + // Si une erreur existe autre que "le dossier existe déjà", on stoppe le serveur. + if (err !== null && (err.errno !== -17 || err.code !== 'EEXIST')) { + throw err; + } + } + + // On démarre le serveur, puis on peut y accéder dans le navigateur en allant sur http://localhost:8000 + app.listen(port, ip, function() { + console.log('Started listening on ' + port); + }); + +} + +main();