zulip/zerver/lib/recipient_parsing.py

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from typing import List
import orjson
from django.utils.translation import gettext as _
from zerver.lib.exceptions import JsonableError
def extract_stream_id(req_to: str) -> int:
# Recipient should only be a single stream ID.
try:
stream_id = int(req_to)
except ValueError:
raise JsonableError(_("Invalid data type for stream ID"))
return stream_id
def extract_direct_message_recipient_ids(req_to: str) -> List[int]:
try:
user_ids = orjson.loads(req_to)
except orjson.JSONDecodeError:
user_ids = req_to
if not isinstance(user_ids, list):
raise JsonableError(_("Invalid data type for recipients"))
for user_id in user_ids:
if not isinstance(user_id, int):
raise JsonableError(_("Recipient list may only contain user IDs"))
return list(set(user_ids))