Chapter 4: initial recipe samples

Chapter04/file-upload/package-lock.json

@@ -0,0 +1,13 @@
+{
+  "name": "file-upload",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "formidable": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/formidable/-/formidable-1.2.2.tgz",
+      "integrity": "sha512-V8gLm+41I/8kguQ4/o1D3RIHRmhYFG4pnNyonvua+40rqcEmT4+V71yaZ3B457xbbgCsCfjSPi65u/W6vK1U5Q=="
+    }
+  }
+}

Chapter04/file-upload/package.json

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+{
+  "name": "file-upload",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "formidable": "^1.2.2"
+  }
+}

Chapter04/file-upload/public/form.html

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+<form method="POST" enctype="multipart/form-data">
+    <label for="userfile">File:</label>
+    <input type="file" id="userfile" name="userfile"><br>
+    <input type="submit">
+</form>

Chapter04/file-upload/server.js

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+const fs = require('fs')
+const http = require('http')
+const path = require('path')
+
+const form = fs.readFileSync(path.join(__dirname, 'public', 'form.html'))
+
+const formidable = require('formidable')
+
+
+http.createServer((req, res) => {
+    if (req.method === 'GET') {
+        get(res)
+        return
+    }
+    if (req.method === 'POST') {
+        post(req, res)
+        return
+    }
+    error(405, res)
+}).listen(3000)
+
+function get(res) {
+    res.writeHead(200, {
+        'Content-Type': 'text/html'
+    })
+    res.end(form)
+}
+
+function post(req, res) {
+    if (!/multipart\/form-data/.test(req.headers['content-type'])) {
+        error(415, res)
+        return
+    }
+
+    const form = formidable({
+        multiples: true,
+        uploadDir: './uploads'
+    });
+
+    form.parse(req, (err, fields, files) => {
+        if (err) return err
+        res.writeHead(200, {
+            'Content-Type': 'application/json'
+        });
+        res.end(JSON.stringify({
+            fields,
+            files
+        }))
+    })
+}
+
+function error(code, res) {
+    res.statusCode = code
+    res.end(http.STATUS_CODES[code])
+}