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Subscriptions: autocheck after subscribing to channel

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This commit is contained in:
James Taylor 2019-09-03 17:47:23 -07:00
parent 0a590c3364
commit c393031ac5
1 changed files with 25 additions and 17 deletions
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42
youtube/subscriptions.py
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@ -79,29 +79,37 @@ def with_open_db(function, *args, **kwargs):
with connection as cursor: with connection as cursor:
return function(cursor, *args, **kwargs) return function(cursor, *args, **kwargs)
def _is_subscribed(cursor, channel_id):
result = cursor.execute('''SELECT EXISTS(
SELECT 1
FROM subscribed_channels
WHERE yt_channel_id=?
LIMIT 1
)''', [channel_id]).fetchone()
return bool(result[0])
def is_subscribed(channel_id): def is_subscribed(channel_id):
if not os.path.exists(database_path): if not os.path.exists(database_path):
return False return False
return with_open_db(_is_subscribed, channel_id)
def _subscribe(channels):
''' channels is a list of (channel_id, channel_name) '''
channels = list(channels)
with open_database() as connection: with open_database() as connection:
with connection as cursor: with connection as cursor:
result = cursor.execute('''SELECT EXISTS( channel_ids_to_check = [channel[0] for channel in channels if not _is_subscribed(cursor, channel[0])]
SELECT 1
FROM subscribed_channels
WHERE yt_channel_id=?
LIMIT 1
)''', [channel_id]).fetchone()
return bool(result[0])
rows = ( (channel_id, channel_name, 0, 0) for channel_id, channel_name in channels)
cursor.executemany('''INSERT OR IGNORE INTO subscribed_channels (yt_channel_id, channel_name, time_last_checked, next_check_time)
VALUES (?, ?, ?, ?)''', rows)
def _subscribe(cursor, channels): if settings.autocheck_subscriptions:
''' channels is a list of (channel_id, channel_name) ''' # important that this is after the changes have been committed to database
# otherwise the autochecker (other thread) tries checking the channel before it's in the database
channels = ( (channel_id, channel_name, 0, 0) for channel_id, channel_name in channels) channel_names.update(channels)
check_channels_if_necessary(channel_ids_to_check)
cursor.executemany('''INSERT OR IGNORE INTO subscribed_channels (yt_channel_id, channel_name, time_last_checked, next_check_time)
VALUES (?, ?, ?, ?)''', channels)
def delete_thumbnails(to_delete): def delete_thumbnails(to_delete):
for thumbnail in to_delete: for thumbnail in to_delete:
@ -611,7 +619,7 @@ def import_subscriptions():
else: else:
return '400 Bad Request: Unsupported file format: ' + mime_type + '. Only subscription.json files (from Google Takeouts) and XML OPML files exported from Youtube\'s subscription manager page are supported', 400 return '400 Bad Request: Unsupported file format: ' + mime_type + '. Only subscription.json files (from Google Takeouts) and XML OPML files exported from Youtube\'s subscription manager page are supported', 400
with_open_db(_subscribe, channels) _subscribe(channels)
return flask.redirect(util.URL_ORIGIN + '/subscription_manager', 303) return flask.redirect(util.URL_ORIGIN + '/subscription_manager', 303)
@ -757,7 +765,7 @@ def post_subscriptions_page():
if action == 'subscribe': if action == 'subscribe':
if len(request.values.getlist('channel_id')) != len(request.values.getlist('channel_name')): if len(request.values.getlist('channel_id')) != len(request.values.getlist('channel_name')):
return '400 Bad Request, length of channel_id != length of channel_name', 400 return '400 Bad Request, length of channel_id != length of channel_name', 400
with_open_db(_subscribe, zip(request.values.getlist('channel_id'), request.values.getlist('channel_name'))) _subscribe(zip(request.values.getlist('channel_id'), request.values.getlist('channel_name')))
elif action == 'unsubscribe': elif action == 'unsubscribe':
with_open_db(_unsubscribe, request.values.getlist('channel_id')) with_open_db(_unsubscribe, request.values.getlist('channel_id'))