feat: day 29

webseite/backend/server.js

@@ -22,6 +22,7 @@ products.load();
 
 // Middleware
 app.use(cors(corsOptions)); // Fängt alle HTTP-Requests vor den Routenabfragen ab.
+app.use(express.json()); // HTTP-Request Body wird als JSON Objekt erwartet und geparsed wird.
 
 // Routes
 app.get('/', (req, res) => {
@@ -43,11 +44,78 @@ app.get('/persons', (req, res) => {
   res.send(persons);
 });
 
+// REST API ======
+// Representational State Transfer (abgekürzt REST)
+// GET - Daten Holen
+// POST - Daten hinzufügen
+// PUT/PATCH - Daten aktualisieren / Einen Datensatz aktualisieren
+// DELETE - Daten löschen
+
+// HTTP - Methode - POST
+// (C)RUD - create - neues Produkt erstellen
+// BRE(A)D - add
+app.post('/api/products', (req, res) => {
+  const product = req.body;
+
+  if (!products.add(product)) {
+    return res.status(400).send({ msg: 'Could not add product', status: 400, success: false });
+  }
+
+  res.send({ msg: 'Product added', status: 200, success: true, data: product });
+});
+
+// HTTP - Methode - GET
+// C(R)UD - read
+// (B)READ - browse
 app.get('/api/products', (req, res) => {
   const data = products.getAll();
   res.send(data);
 });
 
+// HTTP - Methode - GET
+// C(R)UD - read
+// B(R)EAD - read
+app.get('/api/products/:id', (req, res) => {
+  const id = req.params.id; // routenparameter :id wird als Eigenschaft in params-Objekt abgelegt
+  const product = products.get(id);
+
+  if (!product) {
+    return res.status(400).send({ msg: 'Could not get product', status: 400, success: false });
+  }
+
+  res.send(product);
+});
+
+// HTTP - Methode - PUT/PATCH
+// CR(U)D - update
+// BR(E)AD - edit
+app.put('/api/products', (req, res) => {
+  const product = req.body;
+
+  const updated = products.update(product);
+
+  if (!updated) {
+    return res.status(400).send({ msg: 'Could not update product', status: 400, success: false });
+  }
+
+  res.send({ msg: 'Product updated', status: 200, success: true, data: product });
+});
+
+// HTTP - Methode - DELETE
+// CRU(D) - delete
+// BREA(D) - delete
+app.delete('/api/products/:id', (req, res) => {
+  const id = req.params.id;
+
+  if (!products.delete(id)) {
+    return res.status(400).send({ msg: 'Could not delete product', status: 400, success: false });
+  }
+
+  res.send({ msg: 'Product deleted', status: 200, success: true, data: id });
+});
+
+// =========
+
 app.listen(PORT, HOST, () => {
   console.log(color.magenta(`🚀 Server is running at: ${BASE_URL}`));
   console.log(color.yellow('CTRL + C to close.'));