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Bountiful extractor changes
- Add extract_text to simplify extraction of InnerTube texts - Add helper extractor methods to reduce repetition in parsing InnerTube - Change [] more than 2 blocks long to use #dig or #dig? - Remove useless ?.try blocks for items that always exists - Add (some) documentation to VideoRendererParser
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syeopite
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@ -32,24 +32,49 @@ private module Parsers
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private def self.parse(item_contents, author_fallback)
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video_id = item_contents["videoId"].as_s
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title = item_contents["title"].try { |t| t["simpleText"]?.try &.as_s || t["runs"]?.try &.as_a.map(&.["text"].as_s).join("") } || ""
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title = extract_text(item_contents["title"]) || ""
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# Extract author information
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author_info = item_contents["ownerText"]?.try &.["runs"]?.try &.as_a?.try &.[0]?
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author = author_info.try &.["text"].as_s || author_fallback.name || ""
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author_id = author_info.try &.["navigationEndpoint"]?.try &.["browseEndpoint"]["browseId"].as_s || author_fallback.id || ""
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if author_info = item_contents.dig?("ownerText", "runs")
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author_info = author_info[0]
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author = author_info["text"].as_s
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author_id = HelperExtractors.get_browse_endpoint(author_info)
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else
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author = author_fallback.name || ""
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author_id = author_fallback.id || ""
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end
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published = item_contents["publishedTimeText"]?.try &.["simpleText"]?.try { |t| decode_date(t.as_s) } || Time.local
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view_count = item_contents["viewCountText"]?.try &.["simpleText"]?.try &.as_s.gsub(/\D+/, "").to_i64? || 0_i64
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# For live videos (and possibly recently premiered videos) there is no published information.
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# Instead, in its place is the amount of people currently watching. This behavior should be replicated
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# on Invidious once all features of livestreams are supported. On an unrelated note, defaulting to the current
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# time for publishing isn't a good idea.
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published = item_contents["publishedTimeText"]?.try &.["simpleText"].try { |t| decode_date(t.as_s) } || Time.local
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# Typically views are stored under a "simpleText" in the "viewCountText". However, for
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# livestreams and premiered it is stored under a "runs" array: [{"text":123}, {"text": "watching"}]
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# When view count is disabled the "viewCountText" is not present on InnerTube data.
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# TODO change default value to nil and typical encoding type to tuple storing type (watchers, views, etc)
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# and count
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view_count = item_contents.dig?("viewCountText", "simpleText").try &.as_s.gsub(/\D+/, "").to_i64? || 0_i64
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description_html = item_contents["descriptionSnippet"]?.try { |t| parse_content(t) } || ""
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length_seconds = item_contents["lengthText"]?.try &.["simpleText"]?.try &.as_s.try { |t| decode_length_seconds(t) } ||
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item_contents["thumbnailOverlays"]?.try &.as_a.find(&.["thumbnailOverlayTimeStatusRenderer"]?).try &.["thumbnailOverlayTimeStatusRenderer"]?
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.try &.["text"]?.try &.["simpleText"]?.try &.as_s.try { |t| decode_length_seconds(t) } || 0
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# The length information *should* only always exist in "lengthText". However, the legacy Invidious code
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# extracts from "thumbnailOverlays" when it doesn't. More testing is needed to see if this is
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# actually needed
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if length_container = item_contents["lengthText"]?
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length_seconds = decode_length_seconds(length_container["simpleText"].as_s)
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elsif length_container = item_contents["thumbnailOverlays"]?.try &.as_a.find(&.["thumbnailOverlayTimeStatusRenderer"]?)
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length_seconds = extract_text(length_container["thumbnailOverlayTimeStatusRenderer"]["text"]).try { |t| decode_length_seconds(t) } || 0
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else
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length_seconds = 0
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end
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live_now = false
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paid = false
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premium = false
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premiere_timestamp = item_contents["upcomingEventData"]?.try &.["startTime"]?.try { |t| Time.unix(t.as_s.to_i64) }
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premiere_timestamp = item_contents.dig?("upcomingEventData", "startTime").try { |t| Time.unix(t.as_s.to_i64) }
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item_contents["badges"]?.try &.as_a.each do |badge|
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b = badge["metadataBadgeRenderer"]
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@ -89,15 +114,17 @@ private module Parsers
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end
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private def self.parse(item_contents, author_fallback)
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author = item_contents["title"]["simpleText"]?.try &.as_s || author_fallback.name || ""
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author = extract_text(item_contents["title"]) || author_fallback.name || ""
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author_id = item_contents["channelId"]?.try &.as_s || author_fallback.id || ""
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author_thumbnail = item_contents["thumbnail"]["thumbnails"]?.try &.as_a[0]?.try &.["url"]?.try &.as_s || ""
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subscriber_count = item_contents["subscriberCountText"]?.try &.["simpleText"]?.try &.as_s.try { |s| short_text_to_number(s.split(" ")[0]) } || 0
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author_thumbnail = HelperExtractors.get_thumbnails(item_contents)
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# When public subscriber count is disabled, the subscriberCountText isn't sent by InnerTube.
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# TODO change default value to nil
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subscriber_count = item_contents.dig?("subscriberCountText").try &.["simpleText"].try { |s| short_text_to_number(s.as_s.split(" ")[0]) } || 0
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auto_generated = false
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auto_generated = true if !item_contents["videoCountText"]?
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video_count = item_contents["videoCountText"]?.try &.["runs"].as_a[0]?.try &.["text"].as_s.gsub(/\D/, "").to_i || 0
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auto_generated = !item_contents["videoCountText"]? ? true : false
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video_count = HelperExtractors.get_video_count(item_contents)
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description_html = item_contents["descriptionSnippet"]?.try { |t| parse_content(t) } || ""
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SearchChannel.new({
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@ -120,11 +147,11 @@ private module Parsers
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end
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private def self.parse(item_contents, author_fallback)
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title = item_contents["title"]["runs"].as_a[0]?.try &.["text"].as_s || ""
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title = extract_text(item_contents["title"]) || ""
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plid = item_contents["playlistId"]?.try &.as_s || ""
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video_count = item_contents["videoCountText"]["runs"].as_a[0]?.try &.["text"].as_s.gsub(/\D/, "").to_i || 0
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playlist_thumbnail = item_contents["thumbnail"]["thumbnails"][0]?.try &.["url"]?.try &.as_s || ""
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video_count = HelperExtractors.get_video_count(item_contents)
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playlist_thumbnail = HelperExtractors.get_thumbnails(item_contents)
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SearchPlaylist.new({
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title: title,
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@ -141,26 +168,26 @@ private module Parsers
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module PlaylistRendererParser
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def self.process(item : JSON::Any, author_fallback : AuthorFallback)
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if item_contents = item["playlistRenderer"]?
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return self.parse(item_contents, author_fallback)
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return self.parse(item_contents)
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end
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end
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private def self.parse(item_contents, author_fallback)
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private def self.parse(item_contents)
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title = item_contents["title"]["simpleText"]?.try &.as_s || ""
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plid = item_contents["playlistId"]?.try &.as_s || ""
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video_count = item_contents["videoCount"]?.try &.as_s.to_i || 0
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playlist_thumbnail = item_contents["thumbnails"].as_a[0]?.try &.["thumbnails"]?.try &.as_a[0]?.try &.["url"].as_s || ""
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video_count = HelperExtractors.get_video_count(item_contents)
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playlist_thumbnail = HelperExtractors.get_thumbnails_plural(item_contents)
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author_info = item_contents["shortBylineText"]?.try &.["runs"]?.try &.as_a?.try &.[0]?
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author = author_info.try &.["text"].as_s || author_fallback.name || ""
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author_id = author_info.try &.["navigationEndpoint"]?.try &.["browseEndpoint"]["browseId"].as_s || author_fallback.id || ""
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author_info = item_contents.dig("shortBylineText", "runs", 0)
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author = author_info["text"].as_s
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author_id = HelperExtractors.get_browse_endpoint(author_info)
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videos = item_contents["videos"]?.try &.as_a.map do |v|
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v = v["childVideoRenderer"]
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v_title = v["title"]["simpleText"]?.try &.as_s || ""
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v_title = v.dig?("title", "simpleText").try &.as_s || ""
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v_id = v["videoId"]?.try &.as_s || ""
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v_length_seconds = v["lengthText"]?.try &.["simpleText"]?.try { |t| decode_length_seconds(t.as_s) } || 0
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v_length_seconds = v.dig?("lengthText", "simpleText").try { |t| decode_length_seconds(t.as_s) } || 0
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SearchPlaylistVideo.new({
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title: v_title,
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id: v_id,
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@ -190,20 +217,8 @@ private module Parsers
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end
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private def self.parse(item_contents, author_fallback)
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# Title extraction is a bit complicated. There are two possible routes for it
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# as well as times when the title attribute just isn't sent by YT.
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title_container = item_contents["title"]? || ""
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if !title_container.is_a? String
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if title = title_container["simpleText"]?
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title = title.as_s
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else
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title = title_container["runs"][0]["text"].as_s
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end
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else
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title = ""
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end
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url = item_contents["endpoint"]?.try &.["commandMetadata"]["webCommandMetadata"]["url"].as_s
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title = extract_text(item_contents["title"]?) || ""
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url = item_contents["endpoint"]?.try &.dig("commandMetadata", "webCommandMetadata", "url").as_s
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# Sometimes a category can have badges.
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badges = [] of Tuple(String, String) # (Badge style, label)
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@ -249,7 +264,6 @@ end
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# the internal Youtube API's JSON response. The result is then packaged into
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# a structure we can more easily use via the parsers above. Their internals are
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# identical to the item parsers.
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private module Extractors
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module YouTubeTabs
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def self.process(initial_data : Hash(String, JSON::Any))
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@ -260,12 +274,10 @@ private module Extractors
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private def self.extract(target)
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raw_items = [] of JSON::Any
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selected_tab = extract_selected_tab(target["tabs"])
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content = selected_tab["content"]
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content = extract_selected_tab(target["tabs"])["content"]
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content["sectionListRenderer"]["contents"].as_a.each do |renderer_container|
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renderer_container = renderer_container["itemSectionRenderer"]
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renderer_container_contents = renderer_container["contents"].as_a[0]
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renderer_container_contents = renderer_container["itemSectionRenderer"]["contents"].as_a[0]
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# Category extraction
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if items_container = renderer_container_contents["shelfRenderer"]?
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@ -294,16 +306,14 @@ private module Extractors
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private def self.extract(target)
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raw_items = [] of Array(JSON::Any)
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content = target["primaryContents"]
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renderer = content["sectionListRenderer"]["contents"].as_a.each do |node|
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target.dig("primaryContents", "sectionListRenderer", "contents").as_a.each do |node|
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if node = node["itemSectionRenderer"]?
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raw_items << node["contents"].as_a
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end
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end
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raw_items = raw_items.flatten
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return raw_items
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return raw_items.flatten
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end
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end
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@ -329,6 +339,72 @@ private module Extractors
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end
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end
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# Helper methods to extract out certain stuff from InnerTube
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private module HelperExtractors
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# Retrieves the amount of videos present within the given InnerTube data.
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#
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# Returns a 0 when it's unable to do so
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def self.get_video_count(container : JSON::Any) : Int32
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if box = container["videoCountText"]?
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return extract_text(container["videoCountText"]?).try &.gsub(/\D/, "").to_i || 0
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elsif box = container["videoCount"]?
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return box.as_s.to_i
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else
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return 0
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end
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end
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# Retrieve lowest quality thumbnail from InnerTube data
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#
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# TODO allow configuration of image quality (-1 is highest)
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#
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# Raises when it's unable to parse from the given JSON data.
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def self.get_thumbnails(container : JSON::Any) : String
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return container.dig("thumbnail", "thumbnails", 0, "url").as_s
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end
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# ditto
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# YouTube sometimes sends the thumbnail as:
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# {"thumbnails": [{"thumbnails": [{"url": "example.com"}, ...]}]}
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def self.get_thumbnails_plural(container : JSON::Any) : String
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return container.dig("thumbnails", 0, "thumbnails", 0, "url").as_s
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end
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# Retrieves the ID required for querying the InnerTube browse endpoint
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#
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# Raises when it's unable to do so
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def self.get_browse_endpoint(container)
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return container.dig("navigationEndpoint", "browseEndpoint", "browseId").as_s
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end
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end
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# Extracts text from InnerTube response
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#
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# InnerTube can package text in three different formats
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# "runs": [
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# {"text": "something"},
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# {"text": "cont"},
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# ...
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# ]
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#
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# "SimpleText": "something"
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#
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# Or sometimes just none at all as with the data returned from
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# category continuations.
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def extract_text(item : JSON::Any?) : String?
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if item.nil?
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return nil
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end
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if text_container = item["simpleText"]?
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return text_container.as_s
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elsif text_container = item["runs"]?
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return text_container.as_a.map(&.["text"].as_s).join("")
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else
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nil
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end
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end
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# Parses an item from Youtube's JSON response into a more usable structure.
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# The end result can either be a SearchVideo, SearchPlaylist or SearchChannel.
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def extract_item(item : JSON::Any, author_fallback : String? = nil,
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