def insert_update_data(data, cache_time_delta=None):
"""Inserts new prased feed or updates existing parsed feed"""
dt = get_datetime(time_delta=cache_time_delta)
if Data.select().where(
(Data.last_modified > dt) &
(Data.identifier == data['identifier'])).exists():
row = Data.get(
(Data.last_modified > dt) &
(Data.identifier == data['identifier']))
result = update_data(row, data)
elif Data.select().where(
(Data.last_modified > dt) &
(Data.rss_id == data['rss_id']) &
(Data.description_hash == data['description_hash'])).exists():
row = Data.get(
(Data.last_modified > dt) &
(Data.rss_id == data['rss_id']) &
(Data.description_hash == data['description_hash']))
result = update_data(row, data)
else:
result = insert_data(data)
return result
