Fix parsing of related videos

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Samantaz Fox 2022-02-03 01:36:42 +01:00
parent 9621175dc9
commit f124e8cf93
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1 changed files with 74 additions and 27 deletions

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@ -802,23 +802,50 @@ class VideoRedirect < Exception
end
end
def parse_related(r : JSON::Any) : JSON::Any?
# TODO: r["endScreenPlaylistRenderer"], etc.
return if !r["endScreenVideoRenderer"]?
r = r["endScreenVideoRenderer"].as_h
# Use to parse both "compactVideoRenderer" and "endScreenVideoRenderer".
# The former is preferred as it has more videos in it. The second has
# the same 11 first entries as the compact rendered.
#
# TODO: "compactRadioRenderer" (Mix) and
def parse_related_video(related : JSON::Any) : Hash(String, JSON::Any)?
return nil if !related["videoId"]?
return if !r["lengthInSeconds"]?
# The compact renderer has video length in seconds, where the end
# screen rendered has a full text version ("42:40")
length = related["lengthInSeconds"]?.try &.as_i.to_s
length ||= related.dig?("lengthText", "simpleText").try do |box|
decode_length_seconds(box.as_s).to_s
end
rv = {} of String => JSON::Any
rv["author"] = r["shortBylineText"]["runs"][0]?.try &.["text"] || JSON::Any.new("")
rv["ucid"] = r["shortBylineText"]["runs"][0]?.try &.["navigationEndpoint"]["browseEndpoint"]["browseId"] || JSON::Any.new("")
rv["author_url"] = JSON::Any.new("/channel/#{rv["ucid"]}")
rv["length_seconds"] = JSON::Any.new(r["lengthInSeconds"].as_i.to_s)
rv["title"] = r["title"]["simpleText"]
rv["short_view_count_text"] = JSON::Any.new(r["shortViewCountText"]?.try &.["simpleText"]?.try &.as_s || "")
rv["view_count"] = JSON::Any.new(r["title"]["accessibility"]?.try &.["accessibilityData"]["label"].as_s.match(/(?<views>[1-9](\d+,?)*) views/).try &.["views"].gsub(/\D/, "") || "")
rv["id"] = r["videoId"]
JSON::Any.new(rv)
# Both have "short", so the "long" option shouldn't be required
channel_info = (related["shortBylineText"]? || related["longBylineText"]?)
.try &.dig?("runs", 0)
author = channel_info.try &.dig?("text")
ucid = channel_info.try { |ci| HelperExtractors.get_browse_id(ci) }
# "4,088,033 views", only available on compact renderer
# and when video is not a livestream
view_count = related.dig?("viewCountText", "simpleText")
.try &.as_s.gsub(/\D/, "")
short_view_count = related.try do |r|
HelperExtractors.get_short_view_count(r).to_s
end
LOGGER.trace("parse_related_video: Found \"watchNextEndScreenRenderer\" container")
# TODO: when refactoring video types, make a struct for related videos
# or reuse an existing type, if that fits.
return {
"id" => related["videoId"],
"title" => related["title"]["simpleText"],
"author" => author || JSON::Any.new(""),
"ucid" => JSON::Any.new(ucid || ""),
"length_seconds" => JSON::Any.new(length || "0"),
"view_count" => JSON::Any.new(view_count || "0"),
"short_view_count" => JSON::Any.new(short_view_count || "0"),
}
end
def extract_video_info(video_id : String, proxy_region : String? = nil, context_screen : String? = nil)
@ -871,18 +898,6 @@ def extract_video_info(video_id : String, proxy_region : String? = nil, context_
params[f] = player_response[f] if player_response[f]?
end
params["relatedVideos"] = (
player_response
.dig?("playerOverlays", "playerOverlayRenderer", "endScreen", "watchNextEndScreenRenderer", "results")
.try &.as_a.compact_map { |r| parse_related r } || \
player_response
.dig?("webWatchNextResponseExtensionData", "relatedVideoArgs")
.try &.as_s.split(",").map { |r|
r = HTTP::Params.parse(r).to_h
JSON::Any.new(Hash.zip(r.keys, r.values.map { |v| JSON::Any.new(v) }))
}
).try { |a| JSON::Any.new(a) } || JSON::Any.new([] of JSON::Any)
# Top level elements
main_results = player_response.dig?("contents", "twoColumnWatchNextResults")
@ -907,6 +922,38 @@ def extract_video_info(video_id : String, proxy_region : String? = nil, context_
raise BrokenTubeException.new("videoPrimaryInfoRenderer") if !video_primary_renderer
raise BrokenTubeException.new("videoSecondaryInfoRenderer") if !video_secondary_renderer
# Related videos
LOGGER.debug("extract_video_info: parsing related videos...")
related = [] of JSON::Any
# Parse "compactVideoRenderer" items (under secondary results)
secondary_results.as_a.each do |element|
if item = element["compactVideoRenderer"]?
related_video = parse_related_video(item)
related << JSON::Any.new(related_video) if related_video
end
end
# If nothing was found previously, fall back to end screen renderer
if related.empty?
# Container for "endScreenVideoRenderer" items
player_overlays = player_response.dig?(
"playerOverlays", "playerOverlayRenderer",
"endScreen", "watchNextEndScreenRenderer", "results"
)
secondary_results.try &.as_a.each do |element|
if item = element["endScreenVideoRenderer"]?
related_video = parse_related_video(item)
related << JSON::Any.new(related_video) if related_video
end
end
end
params["relatedVideos"] = JSON::Any.new(related)
# Likes/dislikes
toplevel_buttons = video_primary_renderer