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Channels: Fix "Youtube API returned error 400" (#5059)

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This PR also adds sort option to the channel "shorts" tab.
Thanks to iBicha for the original fix of the "livestreams" tab.

Closes 4029, 5021 and 5029
This commit is contained in:
Samantaz Fox 2024-11-08 23:40:34 +01:00
commit 1480e0089f
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GPG Key ID: F42821059186176E
3 changed files with 252 additions and 97 deletions
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190
src/invidious/channels/videos.cr
View File

@ -1,78 +1,3 @@
def produce_channel_content_continuation(ucid, content_type, page = 1, auto_generated = nil, sort_by = "newest", v2 = false)
object_inner_2 = {
"2:0:embedded" => {
"1:0:varint" => 0_i64,
},
"5:varint" => 50_i64,
"6:varint" => 1_i64,
"7:varint" => (page * 30).to_i64,
"9:varint" => 1_i64,
"10:varint" => 0_i64,
}
object_inner_2_encoded = object_inner_2
.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) }
content_type_numerical =
case content_type
when "videos" then 15
when "livestreams" then 14
else 15 # Fallback to "videos"
end
sort_by_numerical =
case sort_by
when "newest" then 1_i64
when "popular" then 2_i64
when "oldest" then 4_i64
else 1_i64 # Fallback to "newest"
end
object_inner_1 = {
"110:embedded" => {
"3:embedded" => {
"#{content_type_numerical}:embedded" => {
"1:embedded" => {
"1:string" => object_inner_2_encoded,
},
"2:embedded" => {
"1:string" => "00000000-0000-0000-0000-000000000000",
},
"3:varint" => sort_by_numerical,
},
},
},
}
object_inner_1_encoded = object_inner_1
.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" => ucid,
"3:string" => object_inner_1_encoded,
"35:string" => "browse-feed#{ucid}videos102",
},
}
continuation = object.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) }
return continuation
end
def make_initial_content_ctoken(ucid, content_type, sort_by) : String
return produce_channel_content_continuation(ucid, content_type, sort_by: sort_by)
end
module Invidious::Channel::Tabs
extend self
@ -101,7 +26,7 @@ module Invidious::Channel::Tabs
end
def get_videos(author : String, ucid : String, *, continuation : String? = nil, sort_by = "newest")
continuation ||= make_initial_content_ctoken(ucid, "videos", sort_by)
continuation ||= make_initial_videos_ctoken(ucid, sort_by)
initial_data = YoutubeAPI.browse(continuation: continuation)
return extract_items(initial_data, author, ucid)
@ -130,14 +55,10 @@ module Invidious::Channel::Tabs
# Shorts
# -------------------
def get_shorts(channel : AboutChannel, continuation : String? = nil)
if continuation.nil?
# EgZzaG9ydHPyBgUKA5oBAA%3D%3D is the protobuf object to load "shorts"
# TODO: try to extract the continuation tokens that allows other sorting options
initial_data = YoutubeAPI.browse(channel.ucid, params: "EgZzaG9ydHPyBgUKA5oBAA%3D%3D")
else
def get_shorts(channel : AboutChannel, *, continuation : String? = nil, sort_by = "newest")
continuation ||= make_initial_shorts_ctoken(channel.ucid, sort_by)
initial_data = YoutubeAPI.browse(continuation: continuation)
end
return extract_items(initial_data, channel.author, channel.ucid)
end
@ -145,9 +66,8 @@ module Invidious::Channel::Tabs
# Livestreams
# -------------------
def get_livestreams(channel : AboutChannel, continuation : String? = nil, sort_by = "newest")
continuation ||= make_initial_content_ctoken(channel.ucid, "livestreams", sort_by)
def get_livestreams(channel : AboutChannel, *, continuation : String? = nil, sort_by = "newest")
continuation ||= make_initial_livestreams_ctoken(channel.ucid, sort_by)
initial_data = YoutubeAPI.browse(continuation: continuation)
return extract_items(initial_data, channel.author, channel.ucid)
@ -171,4 +91,102 @@ module Invidious::Channel::Tabs
return items, next_continuation
end
# -------------------
# C-tokens
# -------------------
private def sort_options_videos_short(sort_by : String)
case sort_by
when "newest" then return 4_i64
when "popular" then return 2_i64
when "oldest" then return 5_i64
else return 4_i64 # Fallback to "newest"
end
end
# Generate the initial "continuation token" to get the first page of the
# "videos" tab. The following page requires the ctoken provided in that
# first page, and so on.
private def make_initial_videos_ctoken(ucid : String, sort_by = "newest")
object = {
"15:embedded" => {
"2:embedded" => {
"1:string" => "00000000-0000-0000-0000-000000000000",
},
"4:varint" => sort_options_videos_short(sort_by),
},
}
return channel_ctoken_wrap(ucid, object)
end
# Generate the initial "continuation token" to get the first page of the
# "shorts" tab. The following page requires the ctoken provided in that
# first page, and so on.
private def make_initial_shorts_ctoken(ucid : String, sort_by = "newest")
object = {
"10:embedded" => {
"2:embedded" => {
"1:string" => "00000000-0000-0000-0000-000000000000",
},
"4:varint" => sort_options_videos_short(sort_by),
},
}
return channel_ctoken_wrap(ucid, object)
end
# Generate the initial "continuation token" to get the first page of the
# "livestreams" tab. The following page requires the ctoken provided in that
# first page, and so on.
private def make_initial_livestreams_ctoken(ucid : String, sort_by = "newest")
sort_by_numerical =
case sort_by
when "newest" then 12_i64
when "popular" then 14_i64
when "oldest" then 13_i64
else 12_i64 # Fallback to "newest"
end
object = {
"14:embedded" => {
"2:embedded" => {
"1:string" => "00000000-0000-0000-0000-000000000000",
},
"5:varint" => sort_by_numerical,
},
}
return channel_ctoken_wrap(ucid, object)
end
# The protobuf structure common between videos/shorts/livestreams
private def channel_ctoken_wrap(ucid : String, object)
object_inner = {
"110:embedded" => {
"3:embedded" => object,
},
}
object_inner_encoded = object_inner
.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" => ucid,
"3:string" => object_inner_encoded,
},
}
continuation = object.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) }
return continuation
end
end

16
src/invidious/routes/channels.cr
View File

@ -20,10 +20,11 @@ module Invidious::Routes::Channels
sort_by = env.params.query["sort_by"]?.try &.downcase
if channel.auto_generated
sort_by ||= "last"
sort_options = {"last", "oldest", "newest"}
items, next_continuation = fetch_channel_playlists(
channel.ucid, channel.author, continuation, (sort_by || "last")
channel.ucid, channel.author, continuation, sort_by
)
items.uniq! do |item|
@ -49,9 +50,11 @@ module Invidious::Routes::Channels
end
next_continuation = nil
else
sort_by ||= "newest"
sort_options = {"newest", "oldest", "popular"}
items, next_continuation = Channel::Tabs.get_videos(
channel, continuation: continuation, sort_by: (sort_by || "newest")
items, next_continuation = Channel::Tabs.get_60_videos(
channel, continuation: continuation, sort_by: sort_by
)
end
end
@ -82,13 +85,12 @@ module Invidious::Routes::Channels
end
next_continuation = nil
else
# TODO: support sort option for shorts
sort_by = ""
sort_options = [] of String
sort_by = env.params.query["sort_by"]?.try &.downcase || "newest"
sort_options = {"newest", "oldest", "popular"}
# Fetch items and continuation token
items, next_continuation = Channel::Tabs.get_shorts(
channel, continuation: continuation
channel, continuation: continuation, sort_by: sort_by
)
end

141
src/invidious/yt_backend/extractors.cr
View File

@ -21,6 +21,7 @@ private ITEM_PARSERS = {
Parsers::ItemSectionRendererParser,
Parsers::ContinuationItemRendererParser,
Parsers::HashtagRendererParser,
Parsers::LockupViewModelParser,
}
private alias InitialData = Hash(String, JSON::Any)
@ -467,9 +468,9 @@ private module Parsers
# Parses an InnerTube richItemRenderer into a SearchVideo.
# Returns nil when the given object isn't a RichItemRenderer
#
# A richItemRenderer seems to be a simple wrapper for a videoRenderer, used
# by the result page for hashtags and for the podcast tab on channels.
# It is located inside a continuationItems container for hashtags.
# A richItemRenderer seems to be a simple wrapper for a various other types,
# used on the hashtags result page and the channel podcast tab. It is located
# itself inside a richGridRenderer container.
#
module RichItemRendererParser
def self.process(item : JSON::Any, author_fallback : AuthorFallback)
@ -482,6 +483,8 @@ private module Parsers
child = VideoRendererParser.process(item_contents, author_fallback)
child ||= ReelItemRendererParser.process(item_contents, author_fallback)
child ||= PlaylistRendererParser.process(item_contents, author_fallback)
child ||= LockupViewModelParser.process(item_contents, author_fallback)
child ||= ShortsLockupViewModelParser.process(item_contents, author_fallback)
return child
end
@ -496,6 +499,9 @@ private module Parsers
# reelItemRenderer items are used in the new (2022) channel layout,
# in the "shorts" tab.
#
# NOTE: As of 10/2024, it might have been fully replaced by shortsLockupViewModel
# TODO: Confirm that hypothesis
#
module ReelItemRendererParser
def self.process(item : JSON::Any, author_fallback : AuthorFallback)
if item_contents = item["reelItemRenderer"]?
@ -582,6 +588,135 @@ private module Parsers
end
end
# Parses an InnerTube lockupViewModel into a SearchPlaylist.
# Returns nil when the given object is not a lockupViewModel.
#
# This structure is present since November 2024 on the "podcasts" and
# "playlists" tabs of the channel page. It is usually encapsulated in either
# a richItemRenderer or a richGridRenderer.
#
module LockupViewModelParser
def self.process(item : JSON::Any, author_fallback : AuthorFallback)
if item_contents = item["lockupViewModel"]?
return self.parse(item_contents, author_fallback)
end
end
private def self.parse(item_contents, author_fallback)
playlist_id = item_contents["contentId"].as_s
thumbnail_view_model = item_contents.dig(
"contentImage", "collectionThumbnailViewModel",
"primaryThumbnail", "thumbnailViewModel"
)
thumbnail = thumbnail_view_model.dig("image", "sources", 0, "url").as_s
# This complicated sequences tries to extract the following data structure:
# "overlays": [{
# "thumbnailOverlayBadgeViewModel": {
# "thumbnailBadges": [{
# "thumbnailBadgeViewModel": {
# "text": "430 episodes",
# "badgeStyle": "THUMBNAIL_OVERLAY_BADGE_STYLE_DEFAULT"
# }
# }]
# }
# }]
#
# NOTE: this simplistic `.to_i` conversion might not work on larger
# playlists and hasn't been tested.
video_count = thumbnail_view_model.dig("overlays").as_a
.compact_map(&.dig?("thumbnailOverlayBadgeViewModel", "thumbnailBadges").try &.as_a)
.flatten
.find(nil, &.dig?("thumbnailBadgeViewModel", "text").try { |node|
{"episodes", "videos"}.any? { |str| node.as_s.ends_with?(str) }
})
.try &.dig("thumbnailBadgeViewModel", "text").as_s.to_i(strict: false)
metadata = item_contents.dig("metadata", "lockupMetadataViewModel")
title = metadata.dig("title", "content").as_s
# TODO: Retrieve "updated" info from metadata parts
# rows = metadata.dig("metadata", "contentMetadataViewModel", "metadataRows").as_a
# parts_text = rows.map(&.dig?("metadataParts", "text", "content").try &.as_s)
# One of these parts should contain a string like: "Updated 2 days ago"
# TODO: Maybe add a button to access the first video of the playlist?
# item_contents.dig("rendererContext", "commandContext", "onTap", "innertubeCommand", "watchEndpoint")
# Available fields: "videoId", "playlistId", "params"
return SearchPlaylist.new({
title: title,
id: playlist_id,
author: author_fallback.name,
ucid: author_fallback.id,
video_count: video_count || -1,
videos: [] of SearchPlaylistVideo,
thumbnail: thumbnail,
author_verified: false,
})
end
def self.parser_name
return {{@type.name}}
end
end
# Parses an InnerTube shortsLockupViewModel into a SearchVideo.
# Returns nil when the given object is not a shortsLockupViewModel.
#
# This structure is present since around October 2024 on the "shorts" tab of
# the channel page and likely replaces the reelItemRenderer structure. It is
# usually (always?) encapsulated in a richItemRenderer.
#
module ShortsLockupViewModelParser
def self.process(item : JSON::Any, author_fallback : AuthorFallback)
if item_contents = item["shortsLockupViewModel"]?
return self.parse(item_contents, author_fallback)
end
end
private def self.parse(item_contents, author_fallback)
# TODO: Maybe add support for "oardefault.jpg" thumbnails?
# thumbnail = item_contents.dig("thumbnail", "sources", 0, "url").as_s
# Gives: https://i.ytimg.com/vi/{video_id}/oardefault.jpg?...
video_id = item_contents.dig(
"onTap", "innertubeCommand", "reelWatchEndpoint", "videoId"
).as_s
title = item_contents.dig("overlayMetadata", "primaryText", "content").as_s
view_count = short_text_to_number(
item_contents.dig("overlayMetadata", "secondaryText", "content").as_s
)
# Approximate to one minute, as "shorts" generally don't exceed that.
# NOTE: The actual duration is not provided by Youtube anymore.
# TODO: Maybe use -1 as an error value and handle that on the frontend?
duration = 60_i32
SearchVideo.new({
title: title,
id: video_id,
author: author_fallback.name,
ucid: author_fallback.id,
published: Time.unix(0),
views: view_count,
description_html: "",
length_seconds: duration,
premiere_timestamp: Time.unix(0),
author_verified: false,
badges: VideoBadges::None,
})
end
def self.parser_name
return {{@type.name}}
end
end
# Parses an InnerTube continuationItemRenderer into a Continuation.
# Returns nil when the given object isn't a continuationItemRenderer.
#