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Fix old videos appearing in subscriptions when channel deletes vids

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Example: 30 vids in DB, 1 vid that we previously saw has since been
deleted. Then on checking, the vid in the 30th slot appeared
to be new.
This commit is contained in:
James Taylor 2020-08-03 14:52:55 -07:00
parent b3b48967c5
commit 4d3e35c981
1 changed files with 13 additions and 2 deletions
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15
youtube/subscriptions.py
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@ -554,6 +554,8 @@ def _get_upstream_videos(channel_id):
WHERE yt_channel_id=?
ORDER BY time_published DESC
LIMIT 30''', [channel_id]).fetchall())
# new videos the channel has uploaded since last time we checked
number_of_new_videos = 0
for video in videos:
if video['id'] in existing_vids:
@ -563,9 +565,18 @@ def _get_upstream_videos(channel_id):
is_first_check = cursor.execute('''SELECT time_last_checked FROM subscribed_channels WHERE yt_channel_id=?''', [channel_id]).fetchone()[0] in (None, 0)
time_videos_retrieved = int(time.time())
rows = []
for video_item in videos:
if is_first_check or number_of_new_videos > 6:
for i, video_item in enumerate(videos):
if (is_first_check
or number_of_new_videos > 6
or i >= number_of_new_videos):
# don't want a crazy ordering on first check or check in a long time, since we're ordering by time_noticed
# Last condition is for when the channel deleting videos
# causes new videos to appear at the end of the backlog.
# For instance, if we have 30 vids in the DB, and 1 vid
# that we previously saw has since been deleted,
# then a video we haven't seen before will appear as the
# 30th. Don't want this to be considered a newly noticed
# vid which would appear at top of subscriptions feed
time_noticed = video_item['time_published']
else:
time_noticed = time_videos_retrieved