BE: edit title backend save persitance issue (#51)

* edit title minor fix

* added getTitle help method in ConversationService

* removed save conversation form get conversation

Author: Yerish26

backend/src/main/java/com/llm_service/llm_service/controller/conversation/ConversationController.java

@@ -101,16 +101,11 @@ public ResponseEntity<List<DiscussionResponse>> continueConversation(
     @PutMapping("/api/v1/conversation/{id}")
     public ResponseEntity<ConversationResponseCompact> editConversation(
             @PathVariable UUID id, @RequestBody ConversationTitleRequest conversationTitleRequest) throws Exception {
-        Conversation conversationOld =
+        Conversation conversation =
                 conversationService.getByID(id).orElseThrow(() -> new ConversationNotFoundException(id));
-        Conversation conversationNew =
-                conversationService.editTitle(conversationOld, conversationTitleRequest.getTitle());
-
-        // TODO find why save does not return discussions
-        // TEMP Solution
-        conversationNew.setDiscussions(conversationOld.getDiscussions());
+        conversation = conversationService.editTitle(conversation, conversationTitleRequest.getTitle());
 
-        return ResponseEntity.status(HttpStatus.OK).body(conversationApiMapper.mapCompact(conversationNew));
+        return ResponseEntity.status(HttpStatus.OK).body(conversationApiMapper.mapCompact(conversation));
     }
 
     @ApiResponses(

backend/src/main/java/com/llm_service/llm_service/service/ConversationService.java

@@ -8,6 +8,7 @@
 import com.llm_service.llm_service.persistance.repositories.conversation.ConversationPersistenceManager;
 import com.llm_service.llm_service.persistance.repositories.discussion.DiscussionPersistenceManager;
 import com.llm_service.llm_service.service.user.UserContext;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
@@ -111,7 +112,23 @@ public Conversation editTitle(Conversation conversation, String title) throws Un
         if (user.isEmpty()) {
             throw new UnAuthorizedException();
         }
+        Conversation savedConversation = saveEditedTitle(conversation, title, user);
 
+        return getConversation(conversation, savedConversation.getTitle());
+    }
+
+    private Conversation getConversation(Conversation conversation, String title) {
+        conversation = Conversation.builder()
+                .id(conversation.getId())
+                .discussions(conversation.getDiscussions())
+                .title(title)
+                .createdOn(conversation.getCreatedOn())
+                .lastUpdatedOn(Instant.now())
+                .build();
+        return conversation;
+    }
+
+    private Conversation saveEditedTitle(Conversation conversation, String title, Optional<User> user) {
         return conversationPersistenceManager.save(
                 conversation.toBuilder().title(title).build(), user.get());
     }