Initial commit

2023-01-24 17:06:04 +01:00 · 2023-01-24 17:06:04 +01:00 · 2ecbce978d
commit 2ecbce978d
6 changed files with 789 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,2 @@
+node_modules
+data
--- a/html/index.html
+++ b/html/index.html
@ -0,0 +1,17 @@
+<!doctype HTML>
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>Hello world!</title>
+    </head>
+    <body>
+        <h1>Hello world!</h1>
+
+        <div>
+            <input id="username" type="text" placeholder="Nom d'utilisateur">
+            <button id="button">Envoyer</button>
+        </div>
+
+        <script src="/main.js"></script>
+    </body>
+</html>
--- a/js/main.js
+++ 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);
+});
--- a/package-lock.json
+++ b/package-lock.json
@ -0,0 +1,660 @@
+{
+  "name": "thomas",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
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+      "name": "thomas",
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+      "license": "ISC",
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+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
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+          "type": "consulting",
+          "url": "https://feross.org/support"
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+    "node_modules/type-is": {
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+      "dependencies": {
+        "media-typer": "0.3.0",
+        "mime-types": "~2.1.24"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/unpipe": {
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+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/utils-merge": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
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+      "engines": {
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+    "node_modules/vary": {
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+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
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+      "engines": {
+        "node": ">= 0.8"
+      }
+    }
+  }
+}
--- a/package.json
+++ b/package.json
@ -0,0 +1,16 @@
+{
+  "name": "thomas",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "body-parser": "^1.20.1",
+    "cookie-session": "^2.0.0",
+    "express": "^4.18.2"
+  }
+}
--- a/server.js
+++ 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();