feat: add, delete student route met user logic + .js in files

backend/src/controllers/users.ts

@@ -0,0 +1,106 @@
+import { Request, Response } from 'express';
+import { UserService } from "../services/users.js";
+import {UserDTO} from "../interfaces/user.js";
+import {User} from "../entities/users/user.entity.js";
+
+export async function getAllUsersHandler<T extends User>(
+    req: Request,
+    res: Response,
+    service: UserService<T>
+):  Promise<void> {
+    try {
+        const full = req.query.full === 'true';
+
+        let users: UserDTO[] | string[] = full
+            ? await service.getAllUsers()
+            : await service.getAllUserIds();
+
+        if (!users){
+            res.status(404).json({ error: `Users not found.` });
+            return;
+        }
+
+        res.status(201).json(users);
+
+    } catch (error) {
+        console.error("❌ Error fetching users:", error);
+        res.status(500).json({ error: "Internal server error" });
+    }
+}
+
+export async function getUserHandler<T extends User>(
+    req: Request,
+    res: Response,
+    service: UserService<T>
+):  Promise<void> {
+    try {
+        const username = req.params.username as string;
+
+        if (!username) {
+            res.status(400).json({ error: 'Missing required field: username' });
+            return;
+        }
+
+        const user = await service.getUserByUsername(username);
+
+        if (!user){
+            res.status(404).json({ error: `User with username '${username}' not found.` });
+            return;
+        }
+
+        res.status(201).json(user);
+
+    } catch (error) {
+        console.error("❌ Error fetching users:", error);
+        res.status(500).json({ error: "Internal server error" });
+    }
+}
+
+export async function createUserHandler<T extends User>(
+    req: Request,
+    res: Response,
+    service: UserService<T>,
+    UserClass: new () => T
+) {
+    try {
+        console.log("req", req)
+        const userData = req.body as UserDTO;
+
+        if (!userData.username || !userData.firstName || !userData.lastName) {
+            res.status(400).json({ error: "Missing required fields: username, firstName, lastName" });
+            return;
+        }
+
+        const newUser = await service.createUser(userData, UserClass);
+        res.status(201).json(newUser);
+    } catch (error) {
+        console.error("❌ Error creating user:", error);
+        res.status(500).json({ error: "Internal server error" });
+    }
+}
+
+export async function deleteUserHandler<T extends User> (
+    req: Request,
+    res: Response,
+    service: UserService<T>
+) {
+    try {
+        const username = req.params.username;
+
+        if (!username) {
+            res.status(400).json({ error: "Missing required field: username" });
+            return;
+        }
+
+        const deletedUser = await service.deleteUser(username);
+        if (!deletedUser) {
+            res.status(404).json({ error: `User with username '${username}' not found.` });
+            return;
+        }
+
+        res.status(200).json(deletedUser);
+    } catch (error) {
+        console.error("❌ Error deleting user:", error);
+        res.status(500).json({ error: "Internal server error" });
+    }
+}