Quite good implementation of notice additions

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

@@ -0,0 +1,53 @@
+package _11.asktpk.artisanconnectbackend.service;
+
+import _11.asktpk.artisanconnectbackend.dto.ClientDTO;
+import _11.asktpk.artisanconnectbackend.entities.Client;
+import _11.asktpk.artisanconnectbackend.repository.ClientRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ClientService {
+    private final ClientRepository clientRepository;
+
+    public ClientService(ClientRepository clientRepository) {
+        this.clientRepository = clientRepository;
+    }
+
+    public ClientDTO toDto(Client client) {
+        ClientDTO dto = new ClientDTO();
+
+        dto.setId(client.getId());
+        dto.setFirstName(client.getFirstName());
+        dto.setLastName(client.getLastName());
+        dto.setEmail(client.getEmail());
+        dto.setRole(client.getRole());
+        dto.setImage(client.getImage());
+
+        return dto;
+    }
+
+    public Client fromDto(ClientDTO dto) {
+        Client client = new Client();
+
+        client.setId(dto.getId());
+        client.setFirstName(dto.getFirstName());
+        client.setLastName(dto.getLastName());
+        client.setEmail(dto.getEmail());
+        client.setRole(dto.getRole());
+        client.setImage(dto.getImage());
+
+        return client;
+    }
+
+    public List<ClientDTO> getAllClients() {
+        List<Client> clients = clientRepository.findAll();
+        return clients.stream().map(this::toDto).toList();
+    }
+
+    public boolean getByID(Long id) {
+        return clientRepository.existsById(id);
+    }
+
+}