added reviews

src/main/java/com/krylov/refound/service/ReviewService.java

@@ -0,0 +1,45 @@
+package com.krylov.refound.service;
+
+import com.krylov.refound.dto.ReviewRequestDto;
+import com.krylov.refound.dto.ReviewResponseDto;
+import com.krylov.refound.entity.Review;
+import com.krylov.refound.repository.ReviewRepository;
+import jakarta.validation.Valid;
+import java.time.LocalDateTime;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class ReviewService {
+
+  private final ReviewRepository reviewRepository;
+
+  public List<ReviewResponseDto> getAllReviews() {
+    return reviewRepository.findAllByOrderByCreatedAtDesc()
+        .stream()
+        .map(this::toResponse)
+        .toList();
+  }
+
+  public ReviewResponseDto createReview(ReviewRequestDto request, String username) {
+    Review review = new Review();
+    review.setAuthorName(username); // или firstName из User
+    review.setRating(request.getRating());
+    review.setText(request.getText());
+    review.setCreatedAt(LocalDateTime.now());
+
+    Review saved = reviewRepository.save(review);
+    return toResponse(saved);
+  }
+  private ReviewResponseDto toResponse(Review r) {
+    return new ReviewResponseDto(
+        r.getId(),
+        r.getAuthorName(),
+        r.getRating(),
+        r.getText(),
+        r.getCreatedAt()
+    );
+  }
+}