Express Routing

// GET — ডেটা পড়া
app.get("/users", (req, res) => {
  res.send("সব users আনা হয়েছে");
});

// POST — নতুন data তৈরি
app.post("/users", (req, res) => {
  res.status(201).send("নতুন user তৈরি হয়েছে");
});

// PUT — সম্পূর্ণ update
app.put("/users/:id", (req, res) => {
  res.send("User update: " + req.params.id);
});

// PATCH — partial update
app.patch("/users/:id", (req, res) => {
  res.send("User partially update হয়েছে");
});

// DELETE — delete
app.delete("/users/:id", (req, res) => {
  res.send("User delete হয়েছে: " + req.params.id);
});

// URL-এর অংশকে parameter বানানো
app.get("/users/:id", (req, res) => {
  res.json({ id: req.params.id });
});

// একাধিক parameter
app.get("/users/:userId/posts/:postId", (req, res) => {
  const { userId, postId } = req.params;
  res.json({ userId, postId });
});

// 404 handling
app.get("/users/not-exist", (req, res) => {
  res.status(404).json({ error: "পাওয়া যায়নি" });
});

// URL: /search?keyword=node&page=2&limit=10
app.get("/search", (req, res) => {
  const { keyword, page, limit } = req.query;
  res.json({
    keyword,
    page: page || 1,
    limit: limit || 10,
  });
});

// একই path-এ একাধিক method
app.route("/events")
  .get((req, res) => res.send("List"))
  .post((req, res) => res.status(201).send("Create"))
  .put((req, res) => res.send("Update"));

// সব method respond
app.all("/api", (req, res) => {
  res.send("যেকোনো method এইখানে respond করবে");
});

// Regular expression route
app.get(/^/(user|admin)/profile$/, (req, res) => {
  res.send("Profile page");
});