Pull request Aboubakar

exercises/nodejs/02-interactive/index.js

@@ -29,7 +29,11 @@ prompt.get([{
 
   console.log(`Welcome, ${result.name} !`);
 
-  tryAgain(function() {});
+  tryAgain(function callback(err, hasWon)
+      {
+          if (err) return console.error(err);
+          if (!hasWon) tryAgain(callback);
+      });
 });
 
 

exercises/nodejs/03-promise/#index.js#

@@ -0,0 +1,70 @@
+#!/bin/sh
+':' //# http://sambal.org/?p=1014 ; exec /usr/bin/env node --harmony_modules --harmony_regexps --harmony_proxies --harmony_sloppy_function --harmony_sloppy_let --harmony_unicode_regexps --harmony_reflect --harmony_destructuring --harmony_default_parameters --harmony_sharedarraybuffer --harmony_atomics --harmony_simd "$0" "$@"
+'use strict';
+
+/**
+ * FETCHING AN API
+ *
+ * Fetch the StarWars API  http://swapi.co/
+ *
+ */
+
+
+const _ = require('lodash');
+const inquirer = require('inquirer'); // https://www.npmjs.com/package/inquirer
+const fetch = require('node-fetch'); // https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API
+const ora = require('ora'); // https://github.com/sindresorhus/ora
+const prettyjson = require('prettyjson');
+
+
+// admire how it's readbale :
+askUser()
+.then(fetchData)
+.then(displayResults)
+.catch((err) => {
+  console.error('! Something bad happened :');
+  console.error(err);
+});
+
+
+function askUser() {
+  return new Promise(function (fulfill, reject) {
+    inquirer.prompt([
+      {
+        name: 'dataType',
+        type: 'list',
+        message: 'What do you want to know about ?',
+        default: 'people',
+        choices: ['films', 'people', 'planets', 'species', 'starships', 'vehicles']
+      },
+      {
+        name: 'id',
+        message: 'Which id ? (1-n)',
+        default: '9'
+      }
+    ], function (choices) {
+      console.log(choices);
+
+      // TODO resolve the promise !!!
+      // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
+    });
+  });
+}
+
+function fetchData(choices) {
+  console.log('fetchData input :', choices);
+
+  const url = 'http://swapi.co/api/' + choices.dataType + '/' + choices.id;
+  console.log(url);
+
+  const spinner = ora('Fetching StarWars API...');
+  spinner.start();
+
+  // TODO now use the fetch API :
+  // https://developer.mozilla.org/fr/docs/Web/API/Fetch_API/Using_Fetch#Checking_that_the_fetch_was_successful
+  return Promise.reject(new Error('fetchData not implemented !'));
+}
+
+function displayResults(data) {
+  console.log('result :\n', prettyjson.render(data));
+}

exercises/nodejs/04-express_hello_world/index.js

@@ -0,0 +1,25 @@
+#!/bin/sh
+':' //# http://sambal.org/?p=1014 ; exec /usr/bin/env node --harmony_modules --harmony_regexps --harmony_proxies --harmony_sloppy_function --harmony_sloppy_let --harmony_unicode_regexps --harmony_reflect --harmony_destructuring --harmony_default_parameters --harmony_sharedarraybuffer --harmony_atomics --harmony_simd "$0" "$@"
+'use strict';
+
+// a minimal "hello world" express app
+
+console.log('Hello world !');
+
+const _ = require('lodash');
+const express = require('express');
+
+const local_ips = require('../../../src/server/common/local-ips').getLocalIps();
+
+const listening_port = 3000;
+
+// http://expressjs.com/4x/api.html
+const app = express();
+
+app.get('/', (req, res) => res.send('hello world'));
+
+console.log('(Ctrl+C to stop)');
+
+app.listen(listening_port, () => {
+  local_ips.forEach(ip => console.log('Listening on http://' + ip + ':' + listening_port));
+});

exercises/nodejs/05-express_routing/api/index.js

@@ -0,0 +1,66 @@
+'use strict';
+
+// http://offirmo.net/wiki/index.php?title=Express.js
+// http://expressjs.com/4x/api.html
+
+const _ = require('lodash');
+const express = require('express');
+
+
+/////////////////////////////////////////////
+
+const router = module.exports = new express.Router();
+
+/////////////////////////////////////////////
+
+router.get('/', (req, res) => {
+    res.send('hello from API sub-router !');
+  // TODO a small page listing your endpoints
+  // cf. js-class-2016-episode-2\src\server\common\meta-routes.js
+});
+
+
+
+// TODO one or two routes
+// be creative !
+
+
+router.get('/MyApi', function (req, res) {
+    res.send(`
+<!DOCTYPE html>
+<head>
+	<title>meta routes</title>
+	<style type="text/css">
+		body {
+			margin: 20px;
+			font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
+			color: #444;
+		}
+	</style>
+</head>
+Yeaaaah ça marche
+	`);
+});
+
+router.get('/MyApi2', function (req, res) {
+ res.send(`www.9gag.com`);
+});
+
+
+////////////////// examples //////////////
+
+router.get('/hello/:name', function (req, res) {
+  res.send(`Hello, ${req.name} !`);
+});
+
+
+router.get('/stuff/:id', function (req, res) {
+
+  res.status(500).json({ error: 'not implemented !' })
+
+  /*
+   res.type('json').send({
+   id: req.id
+   });
+   */
+});

exercises/nodejs/05-express_routing/api/index.js~

@@ -0,0 +1,45 @@
+'use strict';
+
+// http://offirmo.net/wiki/index.php?title=Express.js
+// http://expressjs.com/4x/api.html
+
+const _ = require('lodash');
+const express = require('express');
+
+
+/////////////////////////////////////////////
+
+const router = module.exports = new express.Router();
+
+/////////////////////////////////////////////
+
+router.get('/', (req, res) => {
+    res.send('hello from API sub-router !');
+  // TODO a small page listing your endpoints
+  // cf. js-class-2016-episode-2\src\server\common\meta-routes.js
+});
+
+
+
+// TODO one or two routes
+// be creative !
+
+
+
+////////////////// examples //////////////
+
+router.get('/hello/:name', function (req, res) {
+  res.send(`Hello, ${req.name} !`);
+});
+
+
+router.get('/stuff/:id', function (req, res) {
+
+  res.status(500).json({ error: 'not implemented !' })
+
+  /*
+   res.type('json').send({
+   id: req.id
+   });
+   */
+});

exercises/nodejs/05-express_routing/index.js

@@ -0,0 +1,44 @@
+#!/bin/sh
+':' //# http://sambal.org/?p=1014 ; exec /usr/bin/env node --harmony_modules --harmony_regexps --harmony_proxies --harmony_sloppy_function --harmony_sloppy_let --harmony_unicode_regexps --harmony_reflect --harmony_destructuring --harmony_default_parameters --harmony_sharedarraybuffer --harmony_atomics --harmony_simd "$0" "$@"
+'use strict';
+
+// a better express app
+
+console.log('Hello world !');
+
+const _ = require('lodash');
+const express = require('express');
+
+const local_ips = require('../../../src/server/common/local-ips').getLocalIps();
+
+const listening_port = 3000;
+
+
+/////////////////////////////////////////////
+
+const api_router = require('./api');
+const meta_router = require('../../../src/server/common/meta-routes');
+
+/////////////////////////////////////////////
+
+const app = express();
+
+app.use((req, res, next) => {
+  console.log(`Request to $(req.url) received at`, Date.now());
+  res.header('x-received-at', Date.now()); // set a custom header
+  next();
+});
+
+app.get('/', function(req, res) {
+  res.send('hello from app ! Try /meta /api');
+});
+
+app.use('/api', api_router);
+app.use('/meta', meta_router);
+
+/////////////////////////////////////////////
+
+app.listen(listening_port, () => {
+  local_ips.forEach(ip => console.log('Listening on http://' + ip + ':' + listening_port));
+});
+console.log('(Ctrl+C to stop)');