Add admin user endpoints

src/main/java/com/litoralregas/backend_gateway/config/SecurityConfig.java

@@ -3,6 +3,8 @@ package com.litoralregas.backend_gateway.config;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.security.web.SecurityFilterChain;
 
 @Configuration
@@ -17,4 +19,9 @@ public class SecurityConfig {
                 )
                 .build();
     }
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
 }

src/main/java/com/litoralregas/backend_gateway/user/UserController.java

@@ -0,0 +1,28 @@
+package com.litoralregas.backend_gateway.user;
+
+import com.litoralregas.backend_gateway.user.dto.CreateUserRequest;
+import com.litoralregas.backend_gateway.user.dto.UserResponse;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/admin/users")
+public class UserController {
+
+    private final UserService userService;
+
+    public UserController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @PostMapping
+    public UserResponse create(@RequestBody CreateUserRequest request) {
+        return userService.create(request);
+    }
+
+    @GetMapping
+    public List<UserResponse> findAll() {
+        return userService.findAll();
+    }
+}

src/main/java/com/litoralregas/backend_gateway/user/UserService.java

@@ -0,0 +1,63 @@
+package com.litoralregas.backend_gateway.user;
+
+import com.litoralregas.backend_gateway.client.ClientEntity;
+import com.litoralregas.backend_gateway.client.ClientRepository;
+import com.litoralregas.backend_gateway.user.dto.CreateUserRequest;
+import com.litoralregas.backend_gateway.user.dto.UserResponse;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class UserService {
+
+    private final UserRepository userRepository;
+    private final ClientRepository clientRepository;
+    private final PasswordEncoder passwordEncoder;
+
+    public UserService(
+            UserRepository userRepository,
+            ClientRepository clientRepository,
+            PasswordEncoder passwordEncoder
+    ) {
+        this.userRepository = userRepository;
+        this.clientRepository = clientRepository;
+        this.passwordEncoder = passwordEncoder;
+    }
+
+    public UserResponse create(CreateUserRequest request) {
+        ClientEntity client = clientRepository.findById(request.clientId())
+                .orElseThrow(() -> new RuntimeException("Client not found"));
+
+        UserEntity user = new UserEntity();
+        user.setClient(client);
+        user.setUsername(request.username());
+        user.setPasswordHash(passwordEncoder.encode(request.password()));
+        user.setRole(request.role());
+        user.setEnabled(true);
+
+        UserEntity saved = userRepository.save(user);
+
+        return toResponse(saved);
+    }
+
+    public List<UserResponse> findAll() {
+        return userRepository.findAll()
+                .stream()
+                .map(this::toResponse)
+                .toList();
+    }
+
+    private UserResponse toResponse(UserEntity user) {
+        return new UserResponse(
+                user.getId(),
+                user.getClient().getId(),
+                user.getClient().getName(),
+                user.getUsername(),
+                user.getRole(),
+                user.isEnabled(),
+                user.getCreatedAt()
+        );
+    }
+}

src/main/java/com/litoralregas/backend_gateway/user/dto/CreateUserRequest.java

@@ -0,0 +1,11 @@
+package com.litoralregas.backend_gateway.user.dto;
+
+import com.litoralregas.backend_gateway.user.UserRole;
+
+public record CreateUserRequest(
+        Long clientId,
+        String username,
+        String password,
+        UserRole role
+) {
+}

src/main/java/com/litoralregas/backend_gateway/user/dto/UserResponse.java

@@ -0,0 +1,14 @@
+package com.litoralregas.backend_gateway.user.dto;
+
+import com.litoralregas.backend_gateway.user.UserRole;
+
+public record UserResponse(
+        Long id,
+        Long clientId,
+        String clientName,
+        String username,
+        UserRole role,
+        boolean enabled,
+        String createdAt
+) {
+}