bugfix(user): cambio de username a email para el token

src/main/java/com/example/apprecetas/security/jwt/JwtTokenProvider.java

@@ -23,10 +23,10 @@ public class JwtTokenProvider {
 
     private final SecretKey secretKey = Keys.secretKeyFor(SignatureAlgorithm.HS256);
 
-    public String generateToken(String username) {
+    public String generateToken(String email) {
         long jwtExpirationMs = 3600000; // 1 hora en milisegundos
         return Jwts.builder()
-                .subject(username)
+                .subject(email)
                 .issuedAt(new Date())
                 .expiration(Date.from(Instant.now().plus(jwtExpirationMs, ChronoUnit.MILLIS)))
                 .signWith(secretKey)
@@ -52,8 +52,8 @@ public class JwtTokenProvider {
     }
 
     public Authentication getAuthentication(String token) {
-        String username = getUsernameFromToken(token);
-        UserDetails userDetails = userDetailsService.loadUserByUsername(username);
+        String email = getUsernameFromToken(token);
+        UserDetails userDetails = userDetailsService.loadUserByUsername(email);
         return new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
     }
 

src/main/java/com/example/apprecetas/security/service/CustomUserDetailsServiceImpl.java

@@ -15,12 +15,12 @@ public class CustomUserDetailsServiceImpl implements UserDetailsService {
     private final ReadUserRepository userRepository;
 
     @Override
-    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
-        return userRepository.readByUsername(username)
-                .map(user -> User.withUsername(user.getUsername())
+    public UserDetails loadUserByUsername(String email) throws UsernameNotFoundException {
+        return userRepository.readByEmail(email)
+                .map(user -> User.withUsername(user.getEmail())
                         .password(user.getPassword())
                         .roles(user.getRole().name())
                         .build())
-                .orElseThrow(() -> new UsernameNotFoundException("User con username " + username + " no encontrado"));
+                .orElseThrow(() -> new UsernameNotFoundException("Usuario con email " + email + " no encontrado"));
     }
 }

src/main/java/com/example/apprecetas/user/infrastructure/controller/AuthController.java

 package com.example.apprecetas.user.infrastructure.controller;
 
+import com.example.apprecetas.exception.EntityNotFoundException;
 import com.example.apprecetas.exception.UnprocessableEntityException;
 import com.example.apprecetas.security.jwt.JwtTokenProvider;
 import com.example.apprecetas.user.application.CreateUserUseCase;
@@ -17,7 +18,6 @@ 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.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -40,23 +40,30 @@ public class AuthController {
     private final UserMapper mapper = Mappers.getMapper(UserMapper.class);
 
     @PostMapping("/login")
-    public ResponseEntity<?> login(@RequestBody LoginRequest loginRequest) {
+    public ResponseEntity<?> login(@RequestBody @Valid LoginRequest loginRequest,
+                                   BindingResult result) {
+        if (result.hasErrors()) {
+            String errorMsg = result.getFieldErrors().stream()
+                    .map(fieldError -> fieldError.getField() + ": " + fieldError.getDefaultMessage())
+                    .collect(Collectors.joining("; "));
+            throw new UnprocessableEntityException(errorMsg);
+        }
         try {
-            UserOutputDto userOutputDto = mapper.map(readUserService.readByUsername(loginRequest.getUsername()));
+            readUserService.readByEmail(loginRequest.getEmail());
 
             Authentication authentication = authenticationManager.authenticate(
                     new UsernamePasswordAuthenticationToken(
-                            loginRequest.getUsername(),
+                            loginRequest.getEmail(),
                             loginRequest.getPassword()
                     )
             );
 
             String token = jwtTokenProvider.generateToken(authentication.getName());
             return ResponseEntity.ok(new AuthResponse(token));
-        } catch (UsernameNotFoundException e) {
+        } catch (EntityNotFoundException e) {
             return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Usuario no encontrado");
         } catch (Exception e) {
-            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Credenciales no válidas");
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Contraseña incorrecta");
         }
     }
 
@@ -73,7 +80,7 @@ public class AuthController {
             URI location = URI.create("/user");
             UserOutputDto userOutputDto = mapper.map(createUserService.create(mapper.map(userInputDto)));
 
-            String token = jwtTokenProvider.generateToken(userOutputDto.getUsername());
+            String token = jwtTokenProvider.generateToken(userOutputDto.getEmail());
 
             return ResponseEntity.created(location).body(new AuthResponse(token));
         } catch (Exception e) {

src/main/java/com/example/apprecetas/user/infrastructure/controller/dto/LoginRequest.java

@@ -5,8 +5,8 @@ import lombok.Data;
 
 @Data
 public class LoginRequest {
-    @NotEmpty(message = "Nombre de usuario obligatorio")
-    private String username;
+    @NotEmpty(message = "Email obligatorio")
+    private String email;
 
     @NotEmpty(message = "Contraseña obligatoria")
     private String password;