fix delete conversations via Api and delete conversations from db as well (#23591)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: crazywoola <427733928@qq.com>
Co-authored-by: crazywoola <100913391+crazywoola@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

api/tasks/delete_conversation_task.py

@@ -0,0 +1,68 @@
+import logging
+import time
+
+import click
+from celery import shared_task  # type: ignore
+
+from extensions.ext_database import db
+from models import ConversationVariable
+from models.model import Message, MessageAnnotation, MessageFeedback
+from models.tools import ToolConversationVariables, ToolFile
+from models.web import PinnedConversation
+
+
+@shared_task(queue="conversation")
+def delete_conversation_related_data(conversation_id: str) -> None:
+    """
+    Delete related data conversation in correct order from datatbase to respect foreign key constraints
+
+    Args:
+        conversation_id: conversation Id
+    """
+
+    logging.info(
+        click.style(f"Starting to delete conversation data from db for conversation_id {conversation_id}", fg="green")
+    )
+    start_at = time.perf_counter()
+
+    try:
+        db.session.query(MessageAnnotation).where(MessageAnnotation.conversation_id == conversation_id).delete(
+            synchronize_session=False
+        )
+
+        db.session.query(MessageFeedback).where(MessageFeedback.conversation_id == conversation_id).delete(
+            synchronize_session=False
+        )
+
+        db.session.query(ToolConversationVariables).where(
+            ToolConversationVariables.conversation_id == conversation_id
+        ).delete(synchronize_session=False)
+
+        db.session.query(ToolFile).where(ToolFile.conversation_id == conversation_id).delete(synchronize_session=False)
+
+        db.session.query(ConversationVariable).where(ConversationVariable.conversation_id == conversation_id).delete(
+            synchronize_session=False
+        )
+
+        db.session.query(Message).where(Message.conversation_id == conversation_id).delete(synchronize_session=False)
+
+        db.session.query(PinnedConversation).where(PinnedConversation.conversation_id == conversation_id).delete(
+            synchronize_session=False
+        )
+
+        db.session.commit()
+
+        end_at = time.perf_counter()
+        logging.info(
+            click.style(
+                f"Succeeded cleaning data from db for conversation_id {conversation_id} latency: {end_at - start_at}",
+                fg="green",
+            )
+        )
+
+    except Exception as e:
+        logging.exception("Failed to delete data from db for conversation_id: %s failed", conversation_id)
+        db.session.rollback()
+        raise e
+    finally:
+        db.session.close()