add boostNotice function

src/main/java/_11/asktpk/artisanconnectbackend/controller/NoticeController.java

@@ -106,4 +106,15 @@ public class NoticeController {
             return new ResponseEntity<>(HttpStatus.NOT_FOUND);
         }
     }
+
+    @PostMapping("/boost/{id}")
+    public ResponseEntity boostNotice(@PathVariable("id") long id) {
+        long clientId = 1L;
+        if (!noticeService.isNoticeOwnedByClient(id, clientId)) {
+            throw new EntityNotFoundException("Ogłoszenie nie istnieje lub nie należy do zalogowanego klienta.");
+        }
+        noticeService.boostNotice(id);
+
+        return ResponseEntity.ok("Ogłoszenie zostało pomyślnie wypromowane.");
+    }
 }

src/main/java/_11/asktpk/artisanconnectbackend/repository/NoticeRepository.java

@@ -5,4 +5,7 @@ import _11.asktpk.artisanconnectbackend.entities.Notice;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface NoticeRepository extends JpaRepository<Notice, Long> {
+
+    boolean existsByIdNoticeAndClientId(long noticeId, long clientId);
+
 }

src/main/java/_11/asktpk/artisanconnectbackend/service/NoticeService.java

@@ -9,6 +9,7 @@ import _11.asktpk.artisanconnectbackend.dto.NoticeDTO;
 import jakarta.persistence.EntityNotFoundException;
 import org.springframework.stereotype.Service;
 
+import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
@@ -119,4 +120,20 @@ public class NoticeService {
             throw new EntityNotFoundException("Nie znaleziono ogłoszenia o ID: " + id);
         }
     }
+
+    public boolean isNoticeOwnedByClient(long noticeId, long clientId) {
+        return noticeRepository.existsByIdNoticeAndClientId(noticeId, clientId);
+    }
+
+    public void boostNotice(long noticeId) {
+        Notice notice = noticeRepository.findById(noticeId)
+                .orElseThrow(() -> new EntityNotFoundException("Ogłoszenie o ID " + noticeId + " nie istnieje."));
+
+        notice.setPublishDate(LocalDateTime.now());
+
+        noticeRepository.save(notice);
+
+    }
+
+
 }