Controllers & routers complete with error handling

controllers/users.js

@@ -0,0 +1,52 @@
+const users = require("../data/index.js");
+const sampleUser = require("../data/sampleUser.js");
+
+const listUsers = (req, res) => {
+  res.json(users);
+};
+
+const showUser = (req, res) => {
+  let id = req.params.id - 1;
+  if (users[id]) {
+    res.json(users[id]);
+  } else {
+    res.status(404).send("User not found.");
+  }
+};
+
+const createUser = (req, res) => {
+  let counter = users.length;
+  let newUser = sampleUser;
+  newUser.id = counter + 1;
+  users.push(newUser);
+  res.json(users[newUser.id - 1]);
+};
+
+const updateUser = (req, res) => {
+  let id = req.params.id - 1;
+  if (users[id]) {
+    users[req.params.id - 1] = sampleUser;
+    users[req.params.id - 1].id = req.params.id;
+    res.json(users[req.params.id - 1]);
+  } else {
+    res.status(400).send("User not found.");
+  }
+};
+
+const deleteUser = (req, res) => {
+  let id = req.params.id - 1;
+  if (users[id]) {
+    users.splice(req.params.id - 1, 1);
+    res.send(users);
+  } else {
+    res.status(400).send("User not found.");
+  }
+};
+
+module.exports = {
+  listUsers,
+  showUser,
+  createUser,
+  updateUser,
+  deleteUser,
+};

routes/users.js

@@ -1,17 +1,15 @@
 const express = require("express");
 const router = express.Router();
-const users = require("../data/index.js");
+const usersController = require("../controllers/users.js");
 
-router.get("/users", (req, res) => {
-  return res.json(users);
-});
+router.get("/users", usersController.listUsers);
 
-router.get("/users/:id", (req, res) => {
-  let id = req.params.id - 1;
-  return res.json(users[id]);
-});
+router.get("/users/:id", usersController.showUser);
 
-// const vehiclesController = require("../controllers/vehicles.js");
-// router.get("/vehicles", vehiclesController.list);
+router.post("/users", usersController.createUser);
+
+router.put("/users/:id", usersController.updateUser);
+
+router.delete("/users/:id", usersController.deleteUser);
 
 module.exports = router;