@ -307,23 +307,32 @@ def subscribe_playlist(db, user, playlist)
return playlist
end
def produce_playlist_ url ( id , index )
def produce_playlist_ continuation ( id , index )
if id . starts_with? " UC "
id = " UU " + id . lchop ( " UC " )
end
plid = " VL " + id
# Emulate a "request counter" increment, to make perfectly valid
# ctokens, even if at the time of writing, it's ignored by youtube.
request_count = ( index / 100 ) . to_i64 || 1_i64
data = { " 1:varint " = > index . to_i64 }
. try { | i | Protodec :: Any . cast_json ( i ) }
. try { | i | Protodec :: Any . from_json ( i ) }
. try { | i | Base64 . urlsafe_encode ( i , padding : false ) }
data_wrapper = { " 1:varint " = > request_count , " 15:string " = > " PT: #{ data } " }
. try { | i | Protodec :: Any . cast_json ( i ) }
. try { | i | Protodec :: Any . from_json ( i ) }
. try { | i | Base64 . urlsafe_encode ( i ) }
. try { | i | URI . encode_www_form ( i ) }
object = {
" 80226972:embedded " = > {
" 2:string " = > plid ,
" 3:base64 " = > {
" 15:string " = > " PT: #{ data } " ,
} ,
" 2:string " = > plid ,
" 3:string " = > data_wrapper ,
" 35:string " = > id ,
} ,
}
@ -332,7 +341,7 @@ def produce_playlist_url(id, index)
. try { | i | Base64 . urlsafe_encode ( i ) }
. try { | i | URI . encode_www_form ( i ) }
return " /browse_ajax?continuation= #{ continuation } &gl=US&hl=en "
return continuation
end
def get_playlist ( db , plid , locale , refresh = true , force_refresh = false )
@ -427,47 +436,59 @@ def fetch_playlist(plid, locale)
end
def get_playlist_videos ( db , playlist , offset , locale = nil , continuation = nil )
if playlist . is_a? InvidiousPlaylist
db . query_all ( " SELECT * FROM playlist_videos WHERE plid = $1 ORDER BY array_position($2, index) LIMIT 100 OFFSET $3 " , playlist . id , playlist . index , offset , as : PlaylistVideo )
else
fetch_playlist_videos ( playlist . id , playlist . video_count , offset , locale , continuation )
end
end
def fetch_playlist_videos ( plid , video_count , offset = 0 , locale = nil , continuation = nil )
if continuation
response = YT_POOL . client & . get ( " /watch?v= #{ continuation } &list= #{ plid } &gl=US&hl=en " )
initial_data = extract_initial_data ( response . body )
offset = initial_data [ " currentVideoEndpoint " ]? . try & . [ " watchEndpoint " ]? . try & . [ " index " ]? . try & . as_i64 || offset
end
if video_count > 100
url = produce_playlist_url ( plid , offset )
response = YT_POOL . client & . get ( url )
initial_data = JSON . parse ( response . body ) . as_a . find ( & . as_h . [ " response " ]? ) . try & . as_h
elsif offset > 100
# Show empy playlist if requested page is out of range
if offset >= playlist . video_count
return [ ] of PlaylistVideo
else # Extract first page of videos
response = YT_POOL . client & . get ( " /playlist?list= #{ plid } &gl=US&hl=en " )
initial_data = extract_initial_data ( response . body )
end
return [ ] of PlaylistVideo if ! initial_data
videos = extract_playlist_videos ( initial_data )
if playlist . is_a? InvidiousPlaylist
db . query_all ( " SELECT * FROM playlist_videos WHERE plid = $1 ORDER BY array_position($2, index) LIMIT 100 OFFSET $3 " ,
playlist . id , playlist . index , offset , as : PlaylistVideo )
else
if offset >= 100
# Normalize offset to match youtube's behavior (100 videos chunck per request)
offset = ( offset / 100 ) . to_i64 * 100_i64
ctoken = produce_playlist_continuation ( playlist . id , offset )
initial_data = JSON . parse ( request_youtube_api_browse ( ctoken ) ) . as_h
else
response = YT_POOL . client & . get ( " /playlist?list= #{ playlist . id } &gl=US&hl=en " )
initial_data = extract_initial_data ( response . body )
end
until videos . empty? || videos [ 0 ] . index == offset
videos . shift
if initial_data
return extract_playlist_videos ( initial_data )
else
return [ ] of PlaylistVideo
end
end
return videos
end
def extract_playlist_videos ( initial_data : Hash ( String , JSON :: Any ) )
videos = [ ] of PlaylistVideo
( initial_data [ " contents " ]? . try & . [ " twoColumnBrowseResultsRenderer " ] [ " tabs " ] . as_a . select ( & . [ " tabRenderer " ] [ " selected " ]? . try & . as_bool ) [ 0 ] [ " tabRenderer " ] [ " content " ] [ " sectionListRenderer " ] [ " contents " ] [ 0 ] [ " itemSectionRenderer " ] [ " contents " ] [ 0 ] [ " playlistVideoListRenderer " ] [ " contents " ] . as_a ||
initial_data [ " response " ]? . try & . [ " continuationContents " ] [ " playlistVideoListContinuation " ] [ " contents " ] . as_a ) . try & . each do | item |
if initial_data [ " contents " ]?
tabs = initial_data [ " contents " ] [ " twoColumnBrowseResultsRenderer " ] [ " tabs " ]
tabs_renderer = tabs . as_a . select ( & . [ " tabRenderer " ] [ " selected " ]? . try & . as_bool ) [ 0 ] [ " tabRenderer " ]
# Watch out the two versions, with and without "s"
if tabs_renderer [ " contents " ]? || tabs_renderer [ " content " ]?
# Initial playlist data
tabs_contents = tabs_renderer . [ " contents " ]? || tabs_renderer . [ " content " ]
list_renderer = tabs_contents . [ " sectionListRenderer " ] [ " contents " ] [ 0 ]
item_renderer = list_renderer . [ " itemSectionRenderer " ] [ " contents " ] [ 0 ]
contents = item_renderer . [ " playlistVideoListRenderer " ] [ " contents " ] . as_a
else
# Continuation data
contents = initial_data [ " onResponseReceivedActions " ] [ 0 ]?
. try & . [ " appendContinuationItemsAction " ] [ " continuationItems " ] . as_a
end
else
contents = initial_data [ " response " ]? . try & . [ " continuationContents " ] [ " playlistVideoListContinuation " ] [ " contents " ] . as_a
end
contents . try & . each do | item |
if i = item [ " playlistVideoRenderer " ]?
video_id = i [ " navigationEndpoint " ] [ " watchEndpoint " ] [ " videoId " ] . as_s
plid = i [ " navigationEndpoint " ] [ " watchEndpoint " ] [ " playlistId " ] . as_s
TheFrenchGhosty
4 years ago
committed by