feat: account delete (#11829)

Co-authored-by: NFish <douxc512@gmail.com>

api/tasks/delete_account_task.py

@@ -0,0 +1,26 @@
+import logging
+
+from celery import shared_task  # type: ignore
+
+from extensions.ext_database import db
+from models.account import Account
+from services.billing_service import BillingService
+from tasks.mail_account_deletion_task import send_deletion_success_task
+
+logger = logging.getLogger(__name__)
+
+
+@shared_task(queue="dataset")
+def delete_account_task(account_id):
+    account = db.session.query(Account).filter(Account.id == account_id).first()
+    try:
+        BillingService.delete_account(account_id)
+    except Exception as e:
+        logger.exception(f"Failed to delete account {account_id} from billing service.")
+        raise
+
+    if not account:
+        logger.error(f"Account {account_id} not found.")
+        return
+    # send success email
+    send_deletion_success_task.delay(account.email)