[R9] Create auth controller with login method

src/main/java/com/mirna/hospitalmanagementapi/application/controllers/auth/AuthenticationController.java

@@ -0,0 +1,54 @@
+package com.mirna.hospitalmanagementapi.application.controllers.auth;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.mirna.hospitalmanagementapi.domain.dtos.auth.UserLoginDTO;
+import com.mirna.hospitalmanagementapi.domain.entities.auth.User;
+import com.mirna.hospitalmanagementapi.domain.services.auth.AuthService;
+import com.mirna.hospitalmanagementapi.domain.services.auth.jwt.TokenService;
+
+import jakarta.validation.Valid;
+
+/**
+ * A Spring REST controller for managing authentication and user information.
+ *
+ * @author Mirna Gama
+ * @version 1.0
+ */
+@RestController
+@RequestMapping("/api/auth")
+public class AuthenticationController {
+	
+	@Autowired
+	private AuthService authService;
+	
+	@Autowired
+	private TokenService tokenService;
+	
+	/**
+	 * Performs the user login
+	 *
+	 * @param userLoginDTO A data transfer object containing the user data to perform the login
+	 * 
+	 * @return The authorization token if successful, or an unauthorized status if there is an error.
+	 */
+	@PostMapping
+	public ResponseEntity<Object> login(@RequestBody @Valid UserLoginDTO userLoginDTO) {
+		
+		Authentication auth = authService.login(userLoginDTO);
+		
+		User authenticatedUser = (User) auth.getPrincipal();
+		
+		String token = tokenService.generateToken(authenticatedUser);
+		
+		return ResponseEntity.ok(token);
+	}
+}