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Use smarter query for updating channels

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This commit is contained in:
Omar Roth 2018-07-17 09:20:07 -05:00
parent 7119395045
commit e1ec1b6837
1 changed files with 5 additions and 1 deletions
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6
src/invidious/helpers.cr
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@ -685,15 +685,19 @@ def fetch_channel(ucid, client, db, pull_all_videos = true)
page += 1
end
db.exec("DELETE FROM channel_videos * WHERE ucid = $1", ucid)
video_ids = [] of String
videos.each do |video|
db.exec("UPDATE users SET notifications = notifications || $1 \
WHERE updated < $2 AND $3 = ANY(subscriptions) AND $1 <> ALL(notifications)", video.id, video.published, ucid)
video_ids << video.id
video_array = video.to_a
args = arg_array(video_array)
db.exec("INSERT INTO channel_videos VALUES (#{args}) ON CONFLICT (id) DO NOTHING", video_array)
end
# When a video is deleted from a channel, we find and remove it here
db.exec("DELETE FROM channel_videos * WHERE NOT id = ANY ('{#{video_ids.map { |a| %("#{a}") }.join(",")}}') AND ucid = $1", ucid)
end
channel = InvidiousChannel.new(ucid, author, Time.now)