Authentication added & role based authorization implemented

Course-Management-System.API/Controllers/AuthenticationController.cs

-using Course_Management_System.Database.Entities;
+
 using Course_Management_System.Services.DTO.RequestDTO;
+using Course_Management_System.Services.Interfaces;
+using Course_Management_System.Utility.CustomResponseTypes;
 using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
 
 namespace Course_Management_System.API.Controllers;
@@ -10,89 +11,30 @@ namespace Course_Management_System.API.Controllers;
 [Route("[controller]/[Action]")]
 public class AuthenticationController : ControllerBase
 {
-    private readonly UserManager<UserEntity> _userManager;
-    //signInManager will hold the SignInManager instance
-    private readonly SignInManager<UserEntity> _signInManager;
-    //Both UserManager and SignInManager services are injected into the AccountController
-    //using constructor injection
-    public AuthenticationController(UserManager<UserEntity> userManager, SignInManager<UserEntity> signInManager)
+    private readonly IAuthenticationServices _authenticationServices;
+    public AuthenticationController(IAuthenticationServices authenticationServices)
     {
-        _userManager = userManager;
-        _signInManager = signInManager;
+        _authenticationServices = authenticationServices;
     }
     
     [HttpPost]
-    public async Task<IActionResult> Register([FromForm] UserRegisterRequestDTO newUser)
+    [AllowAnonymous]
+    public async Task<CustomResponse> Register([FromForm] UserRegisterRequestDTO newUser)
     {
-        if (ModelState.IsValid)
-        {
-            // Copy data from RegisterViewModel to UserEntity
-            var user = new UserEntity
-            {
-                UserName = newUser.UserName,
-                Email = newUser.Email,
-                CreatedAt = DateTime.Now,
-                UpdatedAt = DateTime.Now,
-                UpdatedBy =$"{newUser.UserName}" ,
-                CreatedBy = $"{newUser.UserName}",
-                IsActive = false,
-                RoleType = newUser.RoleType
-            };
-            // Store user data in AspNetUsers database table
-            var result = await _userManager.CreateAsync(user, newUser.Password);
-            // If user is successfully created, sign-in the user using
-            // SignInManager and redirect to index action of HomeController
-            if (result.Succeeded)
-            {
-                await _signInManager.SignInAsync(user, isPersistent: false);
-                await _userManager.AddToRoleAsync(user,newUser.RoleType.ToString());
-                return Ok("Registered successfully");
-            }
-            // If there are any errors, add them to the ModelState object
-            // which will be displayed by the validation summary tag helper
-            foreach (var error in result.Errors)
-            {
-                ModelState.AddModelError(string.Empty, error.Description);
-            }
-        }
-        return BadRequest();
+        return await _authenticationServices.RegisterNewUser(newUser);
     }
 
     [HttpPost]
     [AllowAnonymous]
-    public async Task<IActionResult> Login([FromForm] UserLoginRequestDTO userToLogin)
+    public async Task<CustomResponse> Login([FromForm] UserLoginRequestDTO userToLogin)
     {
-        if (ModelState.IsValid)
-        {
-            var result = await _signInManager.PasswordSignInAsync(userToLogin.UserName, userToLogin.Password, userToLogin.RememberMe, lockoutOnFailure: false);
-
-            if (result.Succeeded)
-            {
-                // Handle successful login
-                // return RedirectToAction(nameof(HomeController.Index), "Home");
-                var loggedInUser = _userManager.Users.Where(u=> u.UserName == userToLogin.UserName).FirstOrDefault();
-                loggedInUser.IsActive = true;
-                await _userManager.UpdateAsync(loggedInUser);
-
-                return Ok("Logged in successfully");
-            }
-            else
-            {
-                // Handle failure
-                ModelState.AddModelError(string.Empty, "Invalid login attempt.");
-                return BadRequest();
-            }
-        }
-        return Ok();
+        return await _authenticationServices.LoginUser(userToLogin);
     }
 
     [HttpPost]
-    public async Task<IActionResult> Logout()
-    {
-        var loggedInUser = _userManager.Users.Where(u=> u.IsActive==true).FirstOrDefault();
-        loggedInUser.IsActive = false;
-        await _userManager.UpdateAsync(loggedInUser);
-        await _signInManager.SignOutAsync();
-        return Ok("Logout Successfully");
+    [AllowAnonymous]
+    public async Task<CustomResponse> Logout()
+    {   
+        return await _authenticationServices.LogOutUser();   
     }
 }
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