45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
from . import enc
|
|
from base64 import urlsafe_b64encode as b64enc
|
|
from urllib.parse import quote
|
|
|
|
|
|
def _header(video_id, channel_id) -> str:
|
|
S1_3 = enc.rs(1, video_id)
|
|
S1_5 = enc.rs(1, channel_id) + enc.rs(2, video_id)
|
|
S1 = enc.rs(3, S1_3) + enc.rs(5, S1_5)
|
|
S3 = enc.rs(48687757, enc.rs(1, video_id))
|
|
header_replay = enc.rs(1, S1) + enc.rs(3, S3) + enc.nm(4, 1)
|
|
return b64enc(header_replay)
|
|
|
|
|
|
def _build(video_id, seektime, topchat_only, channel_id) -> str:
|
|
chattype = 4 if topchat_only else 1
|
|
if seektime < 0:
|
|
seektime = 0
|
|
timestamp = int(seektime * 1000000)
|
|
header = enc.rs(3, _header(video_id, channel_id))
|
|
timestamp = enc.nm(5, timestamp)
|
|
s6 = enc.nm(6, 0)
|
|
s7 = enc.nm(7, 0)
|
|
s8 = enc.nm(8, 0)
|
|
s9 = enc.nm(9, 4)
|
|
s10 = enc.rs(10, enc.nm(4, 0))
|
|
chattype = enc.rs(14, enc.nm(1, 4))
|
|
s15 = enc.nm(15, 0)
|
|
entity = b''.join((header, timestamp, s6, s7, s8, s9, s10, chattype, s15))
|
|
continuation = enc.rs(156074452, entity)
|
|
return quote(b64enc(continuation).decode())
|
|
|
|
|
|
def getparam(video_id, seektime=0, topchat_only=False, channel_id='') -> str:
|
|
'''
|
|
Parameter
|
|
---------
|
|
seektime : int
|
|
unit:seconds
|
|
start position of fetching chat data.
|
|
topchat_only : bool
|
|
if True, fetch only 'top chat'
|
|
'''
|
|
return _build(video_id, seektime, topchat_only, channel_id)
|