83 行
2.3 KiB
Python
83 行
2.3 KiB
Python
import time
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from math import inf
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from quart import current_app
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from anonstream.wrappers import with_timestamp, with_first_argument
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from anonstream.utils.users import user_for_websocket
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from anonstream.utils import listmap
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def get_default_name(user):
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return (
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current_app.config['DEFAULT_HOST_NAME']
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if user['broadcaster'] else
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current_app.config['DEFAULT_ANON_NAME']
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)
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def add_notice(user, notice):
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notice_id = time.time_ns() // 1_000_000
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user['notices'][notice_id] = notice
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if len(user['notices']) > current_app.config['LIMIT_NOTICES']:
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user['notices'].popitem(last=False)
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return notice_id
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def pop_notice(user, notice_id):
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try:
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notice = user['notices'].pop(notice_id)
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except KeyError:
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notice = None
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return notice
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def see(user):
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user['seen']['last'] = int(time.time())
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@with_timestamp
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def users_for_websocket(timestamp, messages, users):
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visible_users = filter(
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lambda user: is_visible(timestamp, messages, user),
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users.values(),
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)
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return {
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user['token_hash']: user_for_websocket(user, include_token_hash=False)
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for user in visible_users
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}
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def is_watching(timestamp, user):
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return user['watching_last'] >= timestamp - current_app.config['THRESHOLD_IDLE']
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def is_idle(timestamp, user):
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return is_present(timestamp, user) and not is_watching(timestamp, user)
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def is_present(timestamp, user):
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return user['seen']['last'] >= timestamp - current_app.config['THRESHOLD_ABSENT']
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def is_absent(timestamp, user):
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return not is_present(timestamp, user)
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def is_visible(timestamp, messages, user):
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has_visible_messages = any(
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message['token'] == user['token'] for message in messages
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)
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return has_visible_messages or is_present(timestamp, user)
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last_checkup = -inf
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def sunset(messages, users):
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global last_checkup
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timestamp = int(time.time())
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if timestamp - last_checkup < current_app.config['USER_CHECKUP_PERIOD']:
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return []
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to_delete = []
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for token in users:
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user = users[token]
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if not is_visible(timestamp, messages, user):
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to_delete.append(token)
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for index, token in enumerate(to_delete):
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to_delete[index] = users.pop(token)['token_hash']
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last_checkup = timestamp
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return to_delete
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