feat: add user creation on login (wip)

backend/src/main/java/de/szut/casino/user/UserController.java

@@ -0,0 +1,25 @@
+package de.szut.casino.user;
+
+import de.szut.casino.user.dto.CreateUserDto;
+import jakarta.validation.Valid;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+public class UserController {
+
+    @Autowired
+    private UserService userService;
+
+
+    @GetMapping("/user/{id}")
+    public ResponseEntity<?> getUser(@PathVariable String id) {
+        return ResponseEntity.ok(userService.getUser(id));
+    }
+
+    @PostMapping("/user")
+    public ResponseEntity<?> createUser(@RequestBody @Valid CreateUserDto userData) {
+        return ResponseEntity.ok(userService.createUser(userData));
+    }
+}

backend/src/main/java/de/szut/casino/user/UserEntity.java

@@ -0,0 +1,18 @@
+package de.szut.casino.user;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import lombok.Getter;
+import lombok.Setter;
+
+@Setter
+@Getter
+@Entity
+public class UserEntity {
+    @Id
+    @GeneratedValue
+    private Long id;
+    private String keycloakId;
+    private String username;
+}

backend/src/main/java/de/szut/casino/user/UserRepository.java

@@ -0,0 +1,16 @@
+package de.szut.casino.user;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@Service
+public interface UserRepository extends JpaRepository<UserEntity, Long> {
+    boolean existsByUsername(String username);
+
+    @Query("SELECT u FROM UserEntity u WHERE u.keycloakId = ?1")
+    Optional<UserEntity> findOneByKeycloakId(String keycloakId);
+
+}

backend/src/main/java/de/szut/casino/user/UserService.java

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+package de.szut.casino.user;
+
+import de.szut.casino.user.dto.CreateUserDto;
+import de.szut.casino.user.dto.GetUserDto;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@Service
+public class UserService {
+    @Autowired
+    private UserRepository userRepository;
+
+    public UserEntity createUser(CreateUserDto createUserDto) {
+        UserEntity user = new UserEntity();
+        user.setUsername(createUserDto.getUsername());
+        user.setKeycloakId(createUserDto.getKeycloakId());
+        userRepository.save(user);
+
+        return user;
+    }
+
+    public GetUserDto getUser(String keycloakId) {
+        Optional<UserEntity> user = this.userRepository.findOneByKeycloakId(keycloakId);
+        if (user.isPresent()) {
+            System.out.println(user.get());
+            GetUserDto getUserDto = new GetUserDto();
+            getUserDto.setKeycloakId(user.get().getKeycloakId());
+            getUserDto.setUsername(user.get().getUsername());
+            return getUserDto;
+        }
+        System.out.println("User not found: "+keycloakId);
+
+        return null;
+    }
+}

backend/src/main/java/de/szut/casino/user/dto/CreateUserDto.java

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+package de.szut.casino.user.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+public class CreateUserDto {
+    private String keycloakId;
+    private String username;
+}

backend/src/main/java/de/szut/casino/user/dto/GetUserDto.java

@@ -0,0 +1,15 @@
+package de.szut.casino.user.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+public class GetUserDto {
+    private String keycloakId;
+    private String username;
+}