invidious-experimenting/src/invidious/comments.cr
2022-01-17 13:03:36 -06:00

657 lines
22 KiB
Crystal

class RedditThing
include JSON::Serializable
property kind : String
property data : RedditComment | RedditLink | RedditMore | RedditListing
end
class RedditComment
include JSON::Serializable
property author : String
property body_html : String
property replies : RedditThing | String
property score : Int32
property depth : Int32
property permalink : String
@[JSON::Field(converter: RedditComment::TimeConverter)]
property created_utc : Time
module TimeConverter
def self.from_json(value : JSON::PullParser) : Time
Time.unix(value.read_float.to_i)
end
def self.to_json(value : Time, json : JSON::Builder)
json.number(value.to_unix)
end
end
end
struct RedditLink
include JSON::Serializable
property author : String
property score : Int32
property subreddit : String
property num_comments : Int32
property id : String
property permalink : String
property title : String
end
struct RedditMore
include JSON::Serializable
property children : Array(String)
property count : Int32
property depth : Int32
end
class RedditListing
include JSON::Serializable
property children : Array(RedditThing)
property modhash : String
end
def fetch_youtube_comments(id, cursor, format, locale, thin_mode, region, sort_by = "top")
case cursor
when nil, ""
ctoken = produce_comment_continuation(id, cursor: "", sort_by: sort_by)
when .starts_with? "ADSJ"
ctoken = produce_comment_continuation(id, cursor: cursor, sort_by: sort_by)
else
ctoken = cursor
end
client_config = YoutubeAPI::ClientConfig.new(region: region)
response = YoutubeAPI.next(continuation: ctoken, client_config: client_config)
contents = nil
if on_response_received_endpoints = response["onResponseReceivedEndpoints"]?
header = nil
on_response_received_endpoints.as_a.each do |item|
if item["reloadContinuationItemsCommand"]?
case item["reloadContinuationItemsCommand"]["slot"]
when "RELOAD_CONTINUATION_SLOT_HEADER"
header = item["reloadContinuationItemsCommand"]["continuationItems"][0]
when "RELOAD_CONTINUATION_SLOT_BODY"
contents = item["reloadContinuationItemsCommand"]["continuationItems"]
end
elsif item["appendContinuationItemsAction"]?
contents = item["appendContinuationItemsAction"]["continuationItems"]
end
end
elsif response["continuationContents"]?
response = response["continuationContents"]
if response["commentRepliesContinuation"]?
body = response["commentRepliesContinuation"]
else
body = response["itemSectionContinuation"]
end
contents = body["contents"]?
header = body["header"]?
if body["continuations"]?
# Removable? Doesn't seem like this is used.
more_replies_continuation = body["continuations"][0]["nextContinuationData"]["continuation"].as_s
end
else
raise InfoException.new("Could not fetch comments")
end
if !contents
if format == "json"
return {"comments" => [] of String}.to_json
else
return {"contentHtml" => "", "commentCount" => 0}.to_json
end
end
continuation_item_renderer = nil
contents.as_a.reject! do |item|
if item["continuationItemRenderer"]?
continuation_item_renderer = item["continuationItemRenderer"]
true
end
end
response = JSON.build do |json|
json.object do
if header
count_text = header["commentsHeaderRenderer"]["countText"]
comment_count = (count_text["simpleText"]? || count_text["runs"]?.try &.[0]?.try &.["text"]?)
.try &.as_s.gsub(/\D/, "").to_i? || 0
json.field "commentCount", comment_count
end
json.field "videoId", id
json.field "comments" do
json.array do
contents.as_a.each do |node|
json.object do
if node["commentThreadRenderer"]?
node = node["commentThreadRenderer"]
end
if node["replies"]?
node_replies = node["replies"]["commentRepliesRenderer"]
end
if node["comment"]?
node_comment = node["comment"]["commentRenderer"]
else
node_comment = node["commentRenderer"]
end
content_html = node_comment["contentText"]?.try { |t| parse_content(t) } || ""
author = node_comment["authorText"]?.try &.["simpleText"]? || ""
json.field "author", author
json.field "authorThumbnails" do
json.array do
node_comment["authorThumbnail"]["thumbnails"].as_a.each do |thumbnail|
json.object do
json.field "url", thumbnail["url"]
json.field "width", thumbnail["width"]
json.field "height", thumbnail["height"]
end
end
end
end
if node_comment["authorEndpoint"]?
json.field "authorId", node_comment["authorEndpoint"]["browseEndpoint"]["browseId"]
json.field "authorUrl", node_comment["authorEndpoint"]["browseEndpoint"]["canonicalBaseUrl"]
else
json.field "authorId", ""
json.field "authorUrl", ""
end
published_text = node_comment["publishedTimeText"]["runs"][0]["text"].as_s
published = decode_date(published_text.rchop(" (edited)"))
if published_text.includes?(" (edited)")
json.field "isEdited", true
else
json.field "isEdited", false
end
json.field "content", html_to_content(content_html)
json.field "contentHtml", content_html
json.field "published", published.to_unix
json.field "publishedText", translate(locale, "`x` ago", recode_date(published, locale))
comment_action_buttons_renderer = node_comment["actionButtons"]["commentActionButtonsRenderer"]
json.field "likeCount", comment_action_buttons_renderer["likeButton"]["toggleButtonRenderer"]["accessibilityData"]["accessibilityData"]["label"].as_s.scan(/\d/).map(&.[0]).join.to_i
json.field "commentId", node_comment["commentId"]
json.field "authorIsChannelOwner", node_comment["authorIsChannelOwner"]
if comment_action_buttons_renderer["creatorHeart"]?
hearth_data = comment_action_buttons_renderer["creatorHeart"]["creatorHeartRenderer"]["creatorThumbnail"]
json.field "creatorHeart" do
json.object do
json.field "creatorThumbnail", hearth_data["thumbnails"][-1]["url"]
json.field "creatorName", hearth_data["accessibility"]["accessibilityData"]["label"]
end
end
end
if node_replies && !response["commentRepliesContinuation"]?
if node_replies["moreText"]?
reply_count = (node_replies["moreText"]["simpleText"]? || node_replies["moreText"]["runs"]?.try &.[0]?.try &.["text"]?)
.try &.as_s.gsub(/\D/, "").to_i? || 1
elsif node_replies["viewReplies"]?
reply_count = node_replies["viewReplies"]["buttonRenderer"]["text"]?.try &.["runs"][1]?.try &.["text"]?.try &.as_s.to_i? || 1
else
reply_count = 1
end
if node_replies["continuations"]?
continuation = node_replies["continuations"]?.try &.as_a[0]["nextContinuationData"]["continuation"].as_s
elsif node_replies["contents"]?
continuation = node_replies["contents"]?.try &.as_a[0]["continuationItemRenderer"]["continuationEndpoint"]["continuationCommand"]["token"].as_s
end
continuation ||= ""
json.field "replies" do
json.object do
json.field "replyCount", reply_count
json.field "continuation", continuation
end
end
end
end
end
end
end
if continuation_item_renderer
if continuation_item_renderer["continuationEndpoint"]?
continuation_endpoint = continuation_item_renderer["continuationEndpoint"]
elsif continuation_item_renderer["button"]?
continuation_endpoint = continuation_item_renderer["button"]["buttonRenderer"]["command"]
end
if continuation_endpoint
json.field "continuation", continuation_endpoint["continuationCommand"]["token"].as_s
end
end
end
end
if format == "html"
response = JSON.parse(response)
content_html = template_youtube_comments(response, locale, thin_mode)
response = JSON.build do |json|
json.object do
json.field "contentHtml", content_html
if response["commentCount"]?
json.field "commentCount", response["commentCount"]
else
json.field "commentCount", 0
end
end
end
end
return response
end
def fetch_reddit_comments(id, sort_by = "confidence")
client = make_client(REDDIT_URL)
headers = HTTP::Headers{"User-Agent" => "web:invidious:v#{CURRENT_VERSION} (by github.com/iv-org/invidious)"}
# TODO: Use something like #479 for a static list of instances to use here
query = URI::Params.encode({q: "(url:3D#{id} OR url:#{id}) AND (site:invidio.us OR site:youtube.com OR site:youtu.be)"})
search_results = client.get("/search.json?#{query}", headers)
if search_results.status_code == 200
search_results = RedditThing.from_json(search_results.body)
# For videos that have more than one thread, choose the one with the highest score
threads = search_results.data.as(RedditListing).children
thread = threads.max_by?(&.data.as(RedditLink).score).try(&.data.as(RedditLink))
result = thread.try do |t|
body = client.get("/r/#{t.subreddit}/comments/#{t.id}.json?limit=100&sort=#{sort_by}", headers).body
Array(RedditThing).from_json(body)
end
result ||= [] of RedditThing
elsif search_results.status_code == 302
# Previously, if there was only one result then the API would redirect to that result.
# Now, it appears it will still return a listing so this section is likely unnecessary.
result = client.get(search_results.headers["Location"], headers).body
result = Array(RedditThing).from_json(result)
thread = result[0].data.as(RedditListing).children[0].data.as(RedditLink)
else
raise InfoException.new("Could not fetch comments")
end
client.close
comments = result[1]?.try(&.data.as(RedditListing).children)
comments ||= [] of RedditThing
return comments, thread
end
def template_youtube_comments(comments, locale, thin_mode, is_replies = false)
String.build do |html|
root = comments["comments"].as_a
root.each do |child|
if child["replies"]?
replies_count_text = translate_count(locale,
"comments_view_x_replies",
child["replies"]["replyCount"].as_i64 || 0,
NumberFormatting::Separator
)
replies_html = <<-END_HTML
<div id="replies" class="pure-g">
<div class="pure-u-1-24"></div>
<div class="pure-u-23-24">
<p>
<a href="javascript:void(0)" data-continuation="#{child["replies"]["continuation"]}"
data-onclick="get_youtube_replies" data-load-replies>#{replies_count_text}</a>
</p>
</div>
</div>
END_HTML
end
if !thin_mode
author_thumbnail = "/ggpht#{URI.parse(child["authorThumbnails"][-1]["url"].as_s).request_target}"
else
author_thumbnail = ""
end
author_name = HTML.escape(child["author"].as_s)
html << <<-END_HTML
<div class="pure-g" style="width:100%">
<div class="channel-profile pure-u-4-24 pure-u-md-2-24">
<img loading="lazy" style="margin-right:1em;margin-top:1em;width:90%" src="#{author_thumbnail}">
</div>
<div class="pure-u-20-24 pure-u-md-22-24">
<p>
<b>
<a class="#{child["authorIsChannelOwner"] == true ? "channel-owner" : ""}" href="#{child["authorUrl"]}">#{author_name}</a>
</b>
<p style="white-space:pre-wrap">#{child["contentHtml"]}</p>
END_HTML
if child["attachment"]?
attachment = child["attachment"]
case attachment["type"]
when "image"
attachment = attachment["imageThumbnails"][1]
html << <<-END_HTML
<div class="pure-g">
<div class="pure-u-1 pure-u-md-1-2">
<img loading="lazy" style="width:100%" src="/ggpht#{URI.parse(attachment["url"].as_s).request_target}">
</div>
</div>
END_HTML
when "video"
html << <<-END_HTML
<div class="pure-g">
<div class="pure-u-1 pure-u-md-1-2">
<div style="position:relative;width:100%;height:0;padding-bottom:56.25%;margin-bottom:5px">
END_HTML
if attachment["error"]?
html << <<-END_HTML
<p>#{attachment["error"]}</p>
END_HTML
else
html << <<-END_HTML
<iframe id='ivplayer' style='position:absolute;width:100%;height:100%;left:0;top:0' src='/embed/#{attachment["videoId"]?}?autoplay=0' style='border:none;'></iframe>
END_HTML
end
html << <<-END_HTML
</div>
</div>
</div>
END_HTML
else nil # Ignore
end
end
html << <<-END_HTML
<span title="#{Time.unix(child["published"].as_i64).to_s(translate(locale, "%A %B %-d, %Y"))}">#{translate(locale, "`x` ago", recode_date(Time.unix(child["published"].as_i64), locale))} #{child["isEdited"] == true ? translate(locale, "(edited)") : ""}</span>
|
END_HTML
if comments["videoId"]?
html << <<-END_HTML
<a href="https://www.youtube.com/watch?v=#{comments["videoId"]}&lc=#{child["commentId"]}" title="#{translate(locale, "YouTube comment permalink")}">[YT]</a>
|
END_HTML
elsif comments["authorId"]?
html << <<-END_HTML
<a href="https://www.youtube.com/channel/#{comments["authorId"]}/community?lb=#{child["commentId"]}" title="#{translate(locale, "YouTube comment permalink")}">[YT]</a>
|
END_HTML
end
html << <<-END_HTML
<i class="icon ion-ios-thumbs-up"></i> #{number_with_separator(child["likeCount"])}
END_HTML
if child["creatorHeart"]?
if !thin_mode
creator_thumbnail = "/ggpht#{URI.parse(child["creatorHeart"]["creatorThumbnail"].as_s).request_target}"
else
creator_thumbnail = ""
end
html << <<-END_HTML
<span class="creator-heart-container" title="#{translate(locale, "`x` marked it with a ❤", child["creatorHeart"]["creatorName"].as_s)}">
<div class="creator-heart">
<img loading="lazy" class="creator-heart-background-hearted" src="#{creator_thumbnail}"></img>
<div class="creator-heart-small-hearted">
<div class="icon ion-ios-heart creator-heart-small-container"></div>
</div>
</div>
</span>
END_HTML
end
html << <<-END_HTML
</p>
#{replies_html}
</div>
</div>
END_HTML
end
if comments["continuation"]?
html << <<-END_HTML
<div class="pure-g">
<div class="pure-u-1">
<p>
<a href="javascript:void(0)" data-continuation="#{comments["continuation"]}"
data-onclick="get_youtube_replies" data-load-more #{"data-load-replies" if is_replies}>#{translate(locale, "Load more")}</a>
</p>
</div>
</div>
END_HTML
end
end
end
def template_reddit_comments(root, locale)
String.build do |html|
root.each do |child|
if child.data.is_a?(RedditComment)
child = child.data.as(RedditComment)
body_html = HTML.unescape(child.body_html)
replies_html = ""
if child.replies.is_a?(RedditThing)
replies = child.replies.as(RedditThing)
replies_html = template_reddit_comments(replies.data.as(RedditListing).children, locale)
end
if child.depth > 0
html << <<-END_HTML
<div class="pure-g">
<div class="pure-u-1-24">
</div>
<div class="pure-u-23-24">
END_HTML
else
html << <<-END_HTML
<div class="pure-g">
<div class="pure-u-1">
END_HTML
end
html << <<-END_HTML
<p>
<a href="javascript:void(0)" data-onclick="toggle_parent">[ - ]</a>
<b><a href="https://www.reddit.com/user/#{child.author}">#{child.author}</a></b>
#{translate_count(locale, "comments_points_count", child.score, NumberFormatting::Separator)}
<span title="#{child.created_utc.to_s(translate(locale, "%a %B %-d %T %Y UTC"))}">#{translate(locale, "`x` ago", recode_date(child.created_utc, locale))}</span>
<a href="https://www.reddit.com#{child.permalink}" title="#{translate(locale, "permalink")}">#{translate(locale, "permalink")}</a>
</p>
<div>
#{body_html}
#{replies_html}
</div>
</div>
</div>
END_HTML
end
end
end
end
def replace_links(html)
html = XML.parse_html(html)
html.xpath_nodes(%q(//a)).each do |anchor|
url = URI.parse(anchor["href"])
if url.host.nil? || url.host.not_nil!.ends_with?("youtube.com") || url.host.not_nil!.ends_with?("youtu.be")
if url.host.try &.ends_with? "youtu.be"
url = "/watch?v=#{url.path.lstrip('/')}#{url.query_params}"
else
if url.path == "/redirect"
params = HTTP::Params.parse(url.query.not_nil!)
anchor["href"] = params["q"]?
else
anchor["href"] = url.request_target
end
end
elsif url.to_s == "#"
begin
length_seconds = decode_length_seconds(anchor.content)
rescue ex
length_seconds = decode_time(anchor.content)
end
if length_seconds > 0
anchor["href"] = "javascript:void(0)"
anchor["onclick"] = "player.currentTime(#{length_seconds})"
else
anchor["href"] = url.request_target
end
end
end
html = html.xpath_node(%q(//body)).not_nil!
if node = html.xpath_node(%q(./p))
html = node
end
return html.to_xml(options: XML::SaveOptions::NO_DECL)
end
def fill_links(html, scheme, host)
html = XML.parse_html(html)
html.xpath_nodes("//a").each do |match|
url = URI.parse(match["href"])
# Reddit links don't have host
if !url.host && !match["href"].starts_with?("javascript") && !url.to_s.ends_with? "#"
url.scheme = scheme
url.host = host
match["href"] = url
end
end
if host == "www.youtube.com"
html = html.xpath_node(%q(//body/p)).not_nil!
end
return html.to_xml(options: XML::SaveOptions::NO_DECL)
end
def parse_content(content : JSON::Any) : String
content["simpleText"]?.try &.as_s.rchop('\ufeff').try { |b| HTML.escape(b) }.to_s ||
content["runs"]?.try &.as_a.try { |r| content_to_comment_html(r).try &.to_s.gsub("\n", "<br>") } || ""
end
def content_to_comment_html(content)
comment_html = content.map do |run|
text = HTML.escape(run["text"].as_s)
if run["bold"]?
text = "<b>#{text}</b>"
end
if run["italics"]?
text = "<i>#{text}</i>"
end
if run["navigationEndpoint"]?
if url = run["navigationEndpoint"]["urlEndpoint"]?.try &.["url"].as_s
url = URI.parse(url)
if url.host == "youtu.be"
url = "/watch?v=#{url.request_target.lstrip('/')}"
elsif url.host.nil? || url.host.not_nil!.ends_with?("youtube.com")
if url.path == "/redirect"
# Sometimes, links can be corrupted (why?) so make sure to fallback
# nicely. See https://github.com/iv-org/invidious/issues/2682
url = HTTP::Params.parse(url.query.not_nil!)["q"]? || ""
else
url = url.request_target
end
end
text = %(<a href="#{url}">#{text}</a>)
elsif watch_endpoint = run["navigationEndpoint"]["watchEndpoint"]?
length_seconds = watch_endpoint["startTimeSeconds"]?
video_id = watch_endpoint["videoId"].as_s
if length_seconds && length_seconds.as_i > 0
text = %(<a href="javascript:void(0)" data-onclick="jump_to_time" data-jump-time="#{length_seconds}">#{text}</a>)
else
text = %(<a href="/watch?v=#{video_id}">#{text}</a>)
end
elsif url = run.dig?("navigationEndpoint", "commandMetadata", "webCommandMetadata", "url").try &.as_s
text = %(<a href="#{url}">#{text}</a>)
end
end
text
end.join("").delete('\ufeff')
return comment_html
end
def produce_comment_continuation(video_id, cursor = "", sort_by = "top")
object = {
"2:embedded" => {
"2:string" => video_id,
"25:varint" => 0_i64,
"28:varint" => 1_i64,
"36:embedded" => {
"5:varint" => -1_i64,
"8:varint" => 0_i64,
},
"40:embedded" => {
"1:varint" => 4_i64,
"3:string" => "https://www.youtube.com",
"4:string" => "",
},
},
"3:varint" => 6_i64,
"6:embedded" => {
"1:string" => cursor,
"4:embedded" => {
"4:string" => video_id,
"6:varint" => 0_i64,
},
"5:varint" => 20_i64,
},
}
case sort_by
when "top"
object["6:embedded"].as(Hash)["4:embedded"].as(Hash)["6:varint"] = 0_i64
when "new", "newest"
object["6:embedded"].as(Hash)["4:embedded"].as(Hash)["6:varint"] = 1_i64
else # top
object["6:embedded"].as(Hash)["4:embedded"].as(Hash)["6:varint"] = 0_i64
end
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