proper data flow

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

@@ -32,6 +32,15 @@ public class ClientController {
         }
     }
 
+    @PostMapping("/add")
+    public ResponseEntity addClient(@RequestBody ClientDTO clientDTO) {
+        if(clientService.clientExists(clientDTO.getId())) {
+            return new ResponseEntity<>(HttpStatus.CONFLICT);
+        } else {
+            return new ResponseEntity<>(clientService.addClient(clientDTO), HttpStatus.CREATED);
+        }
+    }
+
     // TODO: do zrobienia walidacja danych
     @PutMapping("/edit/{id}")
     public ResponseEntity updateClient(@PathVariable("id") long id, @RequestBody ClientDTO clientDTO) {

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

@@ -4,7 +4,6 @@ import _11.asktpk.artisanconnectbackend.service.ClientService;
 import _11.asktpk.artisanconnectbackend.service.NoticeService;
 import _11.asktpk.artisanconnectbackend.dto.NoticeDTO;
 import jakarta.persistence.EntityNotFoundException;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -45,7 +44,7 @@ public class NoticeController {
                     .body("Nie znaleziono klienta o ID: " + dto.getClientId());
         }
 
-        noticeService.addNotice(noticeService.fromDTO(dto));
+        noticeService.addNotice(dto);
 
         return ResponseEntity.status(HttpStatus.CREATED).body("Dodano ogłoszenie.");
     }
@@ -68,7 +67,7 @@ public class NoticeController {
                 errors.add(dto.getClientId().toString());
             } else {
                 if(!isError){
-                    noticeService.addNotice(noticeService.fromDTO(dto));
+                    noticeService.addNotice(dto);
                 }
             }
         }

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

@@ -16,7 +16,7 @@ public class ClientService {
         this.clientRepository = clientRepository;
     }
 
-    public ClientDTO toDto(Client client) {
+    private ClientDTO toDto(Client client) {
         ClientDTO dto = new ClientDTO();
 
         dto.setId(client.getId());
@@ -29,7 +29,7 @@ public class ClientService {
         return dto;
     }
 
-    public Client fromDto(ClientDTO dto) {
+    private Client fromDto(ClientDTO dto) {
         Client client = new Client();
 
         client.setId(dto.getId());
@@ -55,6 +55,10 @@ public class ClientService {
         return clientRepository.existsById(id);
     }
 
+    public ClientDTO addClient(ClientDTO clientDTO) {
+        return toDto(clientRepository.save(fromDto(clientDTO)));
+    }
+
     public ClientDTO updateClient(long id, ClientDTO clientDTO) {
         Client existingClient = clientRepository.findById(id)
                 .orElseThrow(() -> new EntityNotFoundException("Nie znaleziono ogłoszenia o ID: " + id));

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

@@ -22,7 +22,7 @@ public class NoticeService {
         this.clientRepository = clientRepository;
     }
 
-    public Notice fromDTO(NoticeDTO dto) {
+    private Notice fromDTO(NoticeDTO dto) {
         Notice notice = new Notice();
         notice.setTitle(dto.getTitle());
         notice.setDescription(dto.getDescription());
@@ -40,8 +40,7 @@ public class NoticeService {
         return notice;
     }
 
-    // Metoda do konwersji Notice na DTO
-    public NoticeDTO toDTO(Notice notice) {
+    private NoticeDTO toDTO(Notice notice) {
         NoticeDTO dto = new NoticeDTO();
         dto.setNoticeId(notice.getIdNotice());
         dto.setTitle(notice.getTitle());
@@ -71,8 +70,8 @@ public class NoticeService {
         return toDTO(notice);
     }
 
-    public void addNotice(Notice notice) {
-        noticeRepository.save(notice);
+    public void addNotice(NoticeDTO dto) {
+        noticeRepository.save(fromDTO(dto));
     }
 
     public boolean noticeExists(Long id) {