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			1905 lines
		
	
	
		
			53 KiB
		
	
	
	
		
			Crystal
		
	
	
	
	
	
			
		
		
	
	
			1905 lines
		
	
	
		
			53 KiB
		
	
	
	
		
			Crystal
		
	
	
	
	
	
# "Invidious" (which is an alternative front-end to YouTube)
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# Copyright (C) 2019  Omar Roth
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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require "digest/md5"
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require "file_utils"
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require "kemal"
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require "markdown"
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require "openssl/hmac"
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require "option_parser"
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require "pg"
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require "sqlite3"
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require "xml"
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require "yaml"
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require "zip"
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require "./invidious/helpers/*"
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require "./invidious/*"
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CONFIG   = Config.from_yaml(File.read("config/config.yml"))
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HMAC_KEY = CONFIG.hmac_key || Random::Secure.hex(32)
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ARCHIVE_URL     = URI.parse("https://archive.org")
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LOGIN_URL       = URI.parse("https://accounts.google.com")
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PUBSUB_URL      = URI.parse("https://pubsubhubbub.appspot.com")
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REDDIT_URL      = URI.parse("https://www.reddit.com")
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TEXTCAPTCHA_URL = URI.parse("http://textcaptcha.com")
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YT_URL          = URI.parse("https://www.youtube.com")
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CHARS_SAFE         = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
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TEST_IDS           = {"AgbeGFYluEA", "BaW_jenozKc", "a9LDPn-MO4I", "ddFvjfvPnqk", "iqKdEhx-dD4"}
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MAX_ITEMS_PER_PAGE = 1500
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REQUEST_HEADERS_WHITELIST  = {"Accept", "Accept-Encoding", "Cache-Control", "Connection", "Content-Length", "If-None-Match", "Range"}
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RESPONSE_HEADERS_BLACKLIST = {"Access-Control-Allow-Origin", "Alt-Svc", "Server"}
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HTTP_CHUNK_SIZE            = 10485760 # ~10MB
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CURRENT_BRANCH  = {{ "#{`git branch | sed -n '/\* /s///p'`.strip}" }}
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CURRENT_COMMIT  = {{ "#{`git rev-list HEAD --max-count=1 --abbrev-commit`.strip}" }}
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CURRENT_VERSION = {{ "#{`git describe --tags --abbrev=0`.strip}" }}
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# This is used to determine the `?v=` on the end of file URLs (for cache busting). We
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# only need to expire modified assets, so we can use this to find the last commit that changes
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# any assets
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ASSET_COMMIT = {{ "#{`git rev-list HEAD --max-count=1 --abbrev-commit -- assets`.strip}" }}
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SOFTWARE = {
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  "name"    => "invidious",
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  "version" => "#{CURRENT_VERSION}-#{CURRENT_COMMIT}",
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  "branch"  => "#{CURRENT_BRANCH}",
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}
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LOCALES = {
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  "ar"    => load_locale("ar"),
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  "de"    => load_locale("de"),
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  "el"    => load_locale("el"),
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  "en-US" => load_locale("en-US"),
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  "eo"    => load_locale("eo"),
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  "es"    => load_locale("es"),
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  "eu"    => load_locale("eu"),
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  "fr"    => load_locale("fr"),
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  "is"    => load_locale("is"),
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  "it"    => load_locale("it"),
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  "nb_NO" => load_locale("nb_NO"),
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  "nl"    => load_locale("nl"),
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  "pl"    => load_locale("pl"),
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  "ru"    => load_locale("ru"),
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  "uk"    => load_locale("uk"),
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  "zh-CN" => load_locale("zh-CN"),
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}
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config = CONFIG
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logger = Invidious::LogHandler.new
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Kemal.config.extra_options do |parser|
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  parser.banner = "Usage: invidious [arguments]"
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  parser.on("-c THREADS", "--channel-threads=THREADS", "Number of threads for refreshing channels (default: #{config.channel_threads})") do |number|
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    begin
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      config.channel_threads = number.to_i
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    rescue ex
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      puts "THREADS must be integer"
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      exit
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    end
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  end
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  parser.on("-f THREADS", "--feed-threads=THREADS", "Number of threads for refreshing feeds (default: #{config.feed_threads})") do |number|
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    begin
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      config.feed_threads = number.to_i
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    rescue ex
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      puts "THREADS must be integer"
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      exit
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    end
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  end
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  parser.on("-o OUTPUT", "--output=OUTPUT", "Redirect output (default: STDOUT)") do |output|
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    FileUtils.mkdir_p(File.dirname(output))
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    logger = Invidious::LogHandler.new(File.open(output, mode: "a"))
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  end
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  parser.on("-v", "--version", "Print version") do |output|
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    puts SOFTWARE.to_pretty_json
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    exit
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  end
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end
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Kemal::CLI.new ARGV
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statistics = {
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  "error" => "Statistics are not availabile.",
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}
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proxies = PROXY_LIST
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decrypt_function = [] of {name: String, value: Int32}
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spawn do
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  update_decrypt_function do |function|
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    decrypt_function = function
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  end
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end
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before_all do |env|
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  env.response.headers["X-XSS-Protection"] = "1; mode=block;"
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  env.response.headers["X-Content-Type-Options"] = "nosniff"
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  preferences = CONFIG.default_user_preferences.dup
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  locale = env.params.query["hl"]?
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  locale ||= "en-US"
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  preferences.locale = locale
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  env.set "preferences", preferences
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end
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# API Endpoints
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get "/api/v1/stats" do |env|
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  env.response.content_type = "application/json"
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  if !config.statistics_enabled
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    error_message = {"error" => "Statistics are not enabled."}.to_json
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    env.response.status_code = 400
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    next error_message
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  end
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  if statistics["error"]?
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    env.response.status_code = 500
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    next statistics.to_json
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  end
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  statistics.to_json
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end
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# YouTube provides "storyboards", which are sprites containing x * y
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# preview thumbnails for individual scenes in a video.
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# See https://support.jwplayer.com/articles/how-to-add-preview-thumbnails
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get "/api/v1/storyboards/:id" do |env|
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  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
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  env.response.content_type = "application/json"
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  id = env.params.url["id"]
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  region = env.params.query["region"]?
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  client = make_client(YT_URL)
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  begin
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    video = fetch_video(id, region)
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  rescue ex : VideoRedirect
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    next env.redirect "/api/v1/storyboards/#{ex.message}"
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  rescue ex
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    env.response.status_code = 500
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    next
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  end
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  storyboards = video.storyboards
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  width = env.params.query["width"]?
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  height = env.params.query["height"]?
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  if !width && !height
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    response = JSON.build do |json|
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      json.object do
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        json.field "storyboards" do
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          generate_storyboards(json, id, storyboards, config, Kemal.config)
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        end
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      end
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    end
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    next response
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  end
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  env.response.content_type = "text/vtt"
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  storyboard = storyboards.select { |storyboard| width == "#{storyboard[:width]}" || height == "#{storyboard[:height]}" }
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  if storyboard.empty?
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    env.response.status_code = 404
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    next
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  else
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    storyboard = storyboard[0]
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  end
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  webvtt = <<-END_VTT
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  WEBVTT
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  END_VTT
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  start_time = 0.milliseconds
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  end_time = storyboard[:interval].milliseconds
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  storyboard[:storyboard_count].times do |i|
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    host_url = make_host_url(config, Kemal.config)
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    url = storyboard[:url].gsub("$M", i).gsub("https://i9.ytimg.com", host_url)
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    storyboard[:storyboard_height].times do |j|
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      storyboard[:storyboard_width].times do |k|
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        webvtt += <<-END_CUE
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        #{start_time}.000 --> #{end_time}.000
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        #{url}#xywh=#{storyboard[:width] * k},#{storyboard[:height] * j},#{storyboard[:width]},#{storyboard[:height]}
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        END_CUE
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        start_time += storyboard[:interval].milliseconds
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        end_time += storyboard[:interval].milliseconds
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      end
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    end
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  end
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  webvtt
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end
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get "/api/v1/captions/:id" do |env|
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  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
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  env.response.content_type = "application/json"
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  id = env.params.url["id"]
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  region = env.params.query["region"]?
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  # See https://github.com/ytdl-org/youtube-dl/blob/6ab30ff50bf6bd0585927cb73c7421bef184f87a/youtube_dl/extractor/youtube.py#L1354
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  # It is possible to use `/api/timedtext?type=list&v=#{id}` and
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  # `/api/timedtext?type=track&v=#{id}&lang=#{lang_code}` directly,
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  # but this does not provide links for auto-generated captions.
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  #
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  # In future this should be investigated as an alternative, since it does not require
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  # getting video info.
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  client = make_client(YT_URL)
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  begin
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    video = fetch_video(id, region)
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  rescue ex : VideoRedirect
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    next env.redirect "/api/v1/captions/#{ex.message}"
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  rescue ex
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    env.response.status_code = 500
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    next
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  end
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  captions = video.captions
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  label = env.params.query["label"]?
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  lang = env.params.query["lang"]?
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  tlang = env.params.query["tlang"]?
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  if !label && !lang
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    response = JSON.build do |json|
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      json.object do
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        json.field "captions" do
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          json.array do
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            captions.each do |caption|
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              json.object do
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                json.field "label", caption.name.simpleText
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                json.field "languageCode", caption.languageCode
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                json.field "url", "/api/v1/captions/#{id}?label=#{URI.escape(caption.name.simpleText)}"
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              end
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            end
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          end
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        end
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      end
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    end
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    next response
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  end
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  env.response.content_type = "text/vtt; charset=UTF-8"
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  caption = captions.select { |caption| caption.name.simpleText == label }
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  if lang
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    caption = captions.select { |caption| caption.languageCode == lang }
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  end
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  if caption.empty?
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    env.response.status_code = 404
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    next
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  else
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    caption = caption[0]
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  end
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  url = caption.baseUrl + "&tlang=#{tlang}"
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  # Auto-generated captions often have cues that aren't aligned properly with the video,
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  # as well as some other markup that makes it cumbersome, so we try to fix that here
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  if caption.name.simpleText.includes? "auto-generated"
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    caption_xml = client.get(url).body
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    caption_xml = XML.parse(caption_xml)
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    webvtt = <<-END_VTT
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    WEBVTT
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    Kind: captions
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    Language: #{tlang || caption.languageCode}
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    END_VTT
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    caption_nodes = caption_xml.xpath_nodes("//transcript/text")
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    caption_nodes.each_with_index do |node, i|
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      start_time = node["start"].to_f.seconds
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      duration = node["dur"]?.try &.to_f.seconds
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      duration ||= start_time
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      if caption_nodes.size > i + 1
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        end_time = caption_nodes[i + 1]["start"].to_f.seconds
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      else
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        end_time = start_time + duration
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      end
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      start_time = "#{start_time.hours.to_s.rjust(2, '0')}:#{start_time.minutes.to_s.rjust(2, '0')}:#{start_time.seconds.to_s.rjust(2, '0')}.#{start_time.milliseconds.to_s.rjust(3, '0')}"
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      end_time = "#{end_time.hours.to_s.rjust(2, '0')}:#{end_time.minutes.to_s.rjust(2, '0')}:#{end_time.seconds.to_s.rjust(2, '0')}.#{end_time.milliseconds.to_s.rjust(3, '0')}"
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      text = HTML.unescape(node.content)
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      text = text.gsub(/<font color="#[a-fA-F0-9]{6}">/, "")
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      text = text.gsub(/<\/font>/, "")
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      if md = text.match(/(?<name>.*) : (?<text>.*)/)
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        text = "<v #{md["name"]}>#{md["text"]}</v>"
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      end
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      webvtt += <<-END_CUE
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    #{start_time} --> #{end_time}
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    #{text}
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    END_CUE
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    end
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  else
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    url += "&format=vtt"
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    webvtt = client.get(url).body
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  end
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  if title = env.params.query["title"]?
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    # https://blog.fastmail.com/2011/06/24/download-non-english-filenames/
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    env.response.headers["Content-Disposition"] = "attachment; filename=\"#{URI.escape(title)}\"; filename*=UTF-8''#{URI.escape(title)}"
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  end
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  webvtt
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end
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get "/api/v1/comments/:id" do |env|
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  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
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  region = env.params.query["region"]?
 | 
						|
 | 
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  env.response.content_type = "application/json"
 | 
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 | 
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  id = env.params.url["id"]
 | 
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  source = env.params.query["source"]?
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  source ||= "youtube"
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 | 
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  thin_mode = env.params.query["thin_mode"]?
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  thin_mode = thin_mode == "true"
 | 
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 | 
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  format = env.params.query["format"]?
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  format ||= "json"
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 | 
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  continuation = env.params.query["continuation"]?
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  sort_by = env.params.query["sort_by"]?.try &.downcase
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  if source == "youtube"
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    sort_by ||= "top"
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    begin
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      comments = fetch_youtube_comments(id, continuation, format, locale, thin_mode, region, sort_by: sort_by)
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    rescue ex
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      error_message = {"error" => ex.message}.to_json
 | 
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      env.response.status_code = 500
 | 
						|
      next error_message
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    end
 | 
						|
 | 
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    next comments
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  elsif source == "reddit"
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    sort_by ||= "confidence"
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						|
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    begin
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      comments, reddit_thread = fetch_reddit_comments(id, sort_by: sort_by)
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      content_html = template_reddit_comments(comments, locale)
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 | 
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      content_html = fill_links(content_html, "https", "www.reddit.com")
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      content_html = replace_links(content_html)
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    rescue ex
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      comments = nil
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						|
      reddit_thread = nil
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						|
      content_html = ""
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    end
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 | 
						|
    if !reddit_thread || !comments
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						|
      env.response.status_code = 404
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						|
      next
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    end
 | 
						|
 | 
						|
    if format == "json"
 | 
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      reddit_thread = JSON.parse(reddit_thread.to_json).as_h
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      reddit_thread["comments"] = JSON.parse(comments.to_json)
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						|
 | 
						|
      next reddit_thread.to_json
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    else
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      response = {
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        "title"       => reddit_thread.title,
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        "permalink"   => reddit_thread.permalink,
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        "contentHtml" => content_html,
 | 
						|
      }
 | 
						|
 | 
						|
      next response.to_json
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/insights/:id" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  id = env.params.url["id"]
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  error_message = {"error" => "YouTube has removed publicly-available analytics."}.to_json
 | 
						|
  env.response.status_code = 410
 | 
						|
  next error_message
 | 
						|
 | 
						|
  client = make_client(YT_URL)
 | 
						|
  headers = HTTP::Headers.new
 | 
						|
  response = client.get("/watch?v=#{id}&gl=US&hl=en&disable_polymer=1")
 | 
						|
 | 
						|
  headers["cookie"] = response.cookies.add_request_headers(headers)["cookie"]
 | 
						|
  headers["content-type"] = "application/x-www-form-urlencoded"
 | 
						|
 | 
						|
  headers["x-client-data"] = "CIi2yQEIpbbJAQipncoBCNedygEIqKPKAQ=="
 | 
						|
  headers["x-spf-previous"] = "https://www.youtube.com/watch?v=#{id}"
 | 
						|
  headers["x-spf-referer"] = "https://www.youtube.com/watch?v=#{id}"
 | 
						|
 | 
						|
  headers["x-youtube-client-name"] = "1"
 | 
						|
  headers["x-youtube-client-version"] = "2.20180719"
 | 
						|
 | 
						|
  session_token = response.body.match(/'XSRF_TOKEN': "(?<session_token>[A-Za-z0-9\_\-\=]+)"/).try &.["session_token"]? || ""
 | 
						|
  post_req = {
 | 
						|
    session_token: session_token,
 | 
						|
  }
 | 
						|
 | 
						|
  response = client.post("/insight_ajax?action_get_statistics_and_data=1&v=#{id}", headers, form: post_req).body
 | 
						|
  response = XML.parse(response)
 | 
						|
 | 
						|
  html_content = XML.parse_html(response.xpath_node(%q(//html_content)).not_nil!.content)
 | 
						|
  graph_data = response.xpath_node(%q(//graph_data))
 | 
						|
  if !graph_data
 | 
						|
    error = html_content.xpath_node(%q(//p)).not_nil!.content
 | 
						|
    next {"error" => error}.to_json
 | 
						|
  end
 | 
						|
 | 
						|
  graph_data = JSON.parse(graph_data.content)
 | 
						|
 | 
						|
  view_count = 0_i64
 | 
						|
  time_watched = 0_i64
 | 
						|
  subscriptions_driven = 0
 | 
						|
  shares = 0
 | 
						|
 | 
						|
  stats_nodes = html_content.xpath_nodes(%q(//table/tr/td))
 | 
						|
  stats_nodes.each do |node|
 | 
						|
    key = node.xpath_node(%q(.//span))
 | 
						|
    value = node.xpath_node(%q(.//div))
 | 
						|
 | 
						|
    if !key || !value
 | 
						|
      next
 | 
						|
    end
 | 
						|
 | 
						|
    key = key.content
 | 
						|
    value = value.content
 | 
						|
 | 
						|
    case key
 | 
						|
    when "Views"
 | 
						|
      view_count = value.delete(", ").to_i64
 | 
						|
    when "Time watched"
 | 
						|
      time_watched = value
 | 
						|
    when "Subscriptions driven"
 | 
						|
      subscriptions_driven = value.delete(", ").to_i
 | 
						|
    when "Shares"
 | 
						|
      shares = value.delete(", ").to_i
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  avg_view_duration_seconds = html_content.xpath_node(%q(//div[@id="stats-chart-tab-watch-time"]/span/span[2])).not_nil!.content
 | 
						|
  avg_view_duration_seconds = decode_length_seconds(avg_view_duration_seconds)
 | 
						|
 | 
						|
  {
 | 
						|
    "viewCount"              => view_count,
 | 
						|
    "timeWatchedText"        => time_watched,
 | 
						|
    "subscriptionsDriven"    => subscriptions_driven,
 | 
						|
    "shares"                 => shares,
 | 
						|
    "avgViewDurationSeconds" => avg_view_duration_seconds,
 | 
						|
    "graphData"              => graph_data,
 | 
						|
  }.to_json
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/annotations/:id" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "text/xml"
 | 
						|
 | 
						|
  id = env.params.url["id"]
 | 
						|
  source = env.params.query["source"]?
 | 
						|
  source ||= "archive"
 | 
						|
 | 
						|
  if !id.match(/[a-zA-Z0-9_-]{11}/)
 | 
						|
    env.response.status_code = 400
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  annotations = ""
 | 
						|
 | 
						|
  case source
 | 
						|
  when "archive"
 | 
						|
    index = CHARS_SAFE.index(id[0]).not_nil!.to_s.rjust(2, '0')
 | 
						|
 | 
						|
    # IA doesn't handle leading hyphens,
 | 
						|
    # so we use https://archive.org/details/youtubeannotations_64
 | 
						|
    if index == "62"
 | 
						|
      index = "64"
 | 
						|
      id = id.sub(/^-/, 'A')
 | 
						|
    end
 | 
						|
 | 
						|
    file = URI.escape("#{id[0, 3]}/#{id}.xml")
 | 
						|
 | 
						|
    client = make_client(ARCHIVE_URL)
 | 
						|
    location = client.get("/download/youtubeannotations_#{index}/#{id[0, 2]}.tar/#{file}")
 | 
						|
 | 
						|
    if !location.headers["Location"]?
 | 
						|
      env.response.status_code = location.status_code
 | 
						|
    end
 | 
						|
 | 
						|
    response = make_client(URI.parse(location.headers["Location"])).get(location.headers["Location"])
 | 
						|
 | 
						|
    if response.body.empty?
 | 
						|
      env.response.status_code = 404
 | 
						|
      next
 | 
						|
    end
 | 
						|
 | 
						|
    if response.status_code != 200
 | 
						|
      env.response.status_code = response.status_code
 | 
						|
      next
 | 
						|
    end
 | 
						|
 | 
						|
    annotations = response.body
 | 
						|
  when "youtube"
 | 
						|
    client = make_client(YT_URL)
 | 
						|
 | 
						|
    response = client.get("/annotations_invideo?video_id=#{id}")
 | 
						|
 | 
						|
    if response.status_code != 200
 | 
						|
      env.response.status_code = response.status_code
 | 
						|
      next
 | 
						|
    end
 | 
						|
 | 
						|
    annotations = response.body
 | 
						|
  end
 | 
						|
 | 
						|
  annotations
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/videos/:id" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  id = env.params.url["id"]
 | 
						|
  region = env.params.query["region"]?
 | 
						|
 | 
						|
  begin
 | 
						|
    video = fetch_video(id, region)
 | 
						|
  rescue ex : VideoRedirect
 | 
						|
    next env.redirect "/api/v1/videos/#{ex.message}"
 | 
						|
  rescue ex
 | 
						|
    error_message = {"error" => ex.message}.to_json
 | 
						|
    env.response.status_code = 500
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
 | 
						|
  video.to_json(locale, config, Kemal.config, decrypt_function)
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/trending" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  region = env.params.query["region"]?
 | 
						|
  trending_type = env.params.query["type"]?
 | 
						|
 | 
						|
  begin
 | 
						|
    trending, plid = fetch_trending(trending_type, region, locale)
 | 
						|
  rescue ex
 | 
						|
    error_message = {"error" => ex.message}.to_json
 | 
						|
    env.response.status_code = 500
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
 | 
						|
  videos = JSON.build do |json|
 | 
						|
    json.array do
 | 
						|
      trending.each do |video|
 | 
						|
        video.to_json(locale, config, Kemal.config, json)
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  videos
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/channels/:ucid" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  ucid = env.params.url["ucid"]
 | 
						|
  sort_by = env.params.query["sort_by"]?.try &.downcase
 | 
						|
  sort_by ||= "newest"
 | 
						|
 | 
						|
  begin
 | 
						|
    channel = get_about_info(ucid, locale)
 | 
						|
  rescue ex
 | 
						|
    error_message = {"error" => ex.message}.to_json
 | 
						|
    env.response.status_code = 500
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
 | 
						|
  page = 1
 | 
						|
  if channel.auto_generated
 | 
						|
    videos = [] of SearchVideo
 | 
						|
    count = 0
 | 
						|
  else
 | 
						|
    begin
 | 
						|
      videos, count = get_60_videos(channel.ucid, channel.author, page, channel.auto_generated, sort_by)
 | 
						|
    rescue ex
 | 
						|
      error_message = {"error" => ex.message}.to_json
 | 
						|
      env.response.status_code = 500
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  JSON.build do |json|
 | 
						|
    # TODO: Refactor into `to_json` for InvidiousChannel
 | 
						|
    json.object do
 | 
						|
      json.field "author", channel.author
 | 
						|
      json.field "authorId", channel.ucid
 | 
						|
      json.field "authorUrl", channel.author_url
 | 
						|
 | 
						|
      json.field "authorBanners" do
 | 
						|
        json.array do
 | 
						|
          if channel.banner
 | 
						|
            qualities = {
 | 
						|
              {width: 2560, height: 424},
 | 
						|
              {width: 2120, height: 351},
 | 
						|
              {width: 1060, height: 175},
 | 
						|
            }
 | 
						|
            qualities.each do |quality|
 | 
						|
              json.object do
 | 
						|
                json.field "url", channel.banner.not_nil!.gsub("=w1060-", "=w#{quality[:width]}-")
 | 
						|
                json.field "width", quality[:width]
 | 
						|
                json.field "height", quality[:height]
 | 
						|
              end
 | 
						|
            end
 | 
						|
 | 
						|
            json.object do
 | 
						|
              json.field "url", channel.banner.not_nil!.split("=w1060-")[0]
 | 
						|
              json.field "width", 512
 | 
						|
              json.field "height", 288
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      json.field "authorThumbnails" do
 | 
						|
        json.array do
 | 
						|
          qualities = {32, 48, 76, 100, 176, 512}
 | 
						|
 | 
						|
          qualities.each do |quality|
 | 
						|
            json.object do
 | 
						|
              json.field "url", channel.author_thumbnail.gsub(/=\d+/, "=s#{quality}")
 | 
						|
              json.field "width", quality
 | 
						|
              json.field "height", quality
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      json.field "subCount", channel.sub_count
 | 
						|
      json.field "totalViews", channel.total_views
 | 
						|
      json.field "joined", channel.joined.to_unix
 | 
						|
      json.field "paid", channel.paid
 | 
						|
 | 
						|
      json.field "autoGenerated", channel.auto_generated
 | 
						|
      json.field "isFamilyFriendly", channel.is_family_friendly
 | 
						|
      json.field "description", html_to_content(channel.description_html)
 | 
						|
      json.field "descriptionHtml", channel.description_html
 | 
						|
 | 
						|
      json.field "allowedRegions", channel.allowed_regions
 | 
						|
 | 
						|
      json.field "latestVideos" do
 | 
						|
        json.array do
 | 
						|
          videos.each do |video|
 | 
						|
            video.to_json(locale, config, Kemal.config, json)
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      json.field "relatedChannels" do
 | 
						|
        json.array do
 | 
						|
          channel.related_channels.each do |related_channel|
 | 
						|
            json.object do
 | 
						|
              json.field "author", related_channel.author
 | 
						|
              json.field "authorId", related_channel.ucid
 | 
						|
              json.field "authorUrl", related_channel.author_url
 | 
						|
 | 
						|
              json.field "authorThumbnails" do
 | 
						|
                json.array do
 | 
						|
                  qualities = {32, 48, 76, 100, 176, 512}
 | 
						|
 | 
						|
                  qualities.each do |quality|
 | 
						|
                    json.object do
 | 
						|
                      json.field "url", related_channel.author_thumbnail.gsub(/=\d+/, "=s#{quality}")
 | 
						|
                      json.field "width", quality
 | 
						|
                      json.field "height", quality
 | 
						|
                    end
 | 
						|
                  end
 | 
						|
                end
 | 
						|
              end
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
{"/api/v1/channels/:ucid/videos", "/api/v1/channels/videos/:ucid"}.each do |route|
 | 
						|
  get route do |env|
 | 
						|
    locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
    env.response.content_type = "application/json"
 | 
						|
 | 
						|
    ucid = env.params.url["ucid"]
 | 
						|
    page = env.params.query["page"]?.try &.to_i?
 | 
						|
    page ||= 1
 | 
						|
    sort_by = env.params.query["sort"]?.try &.downcase
 | 
						|
    sort_by ||= env.params.query["sort_by"]?.try &.downcase
 | 
						|
    sort_by ||= "newest"
 | 
						|
 | 
						|
    begin
 | 
						|
      channel = get_about_info(ucid, locale)
 | 
						|
    rescue ex
 | 
						|
      error_message = {"error" => ex.message}.to_json
 | 
						|
      env.response.status_code = 500
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
 | 
						|
    begin
 | 
						|
      videos, count = get_60_videos(channel.ucid, channel.author, page, channel.auto_generated, sort_by)
 | 
						|
    rescue ex
 | 
						|
      error_message = {"error" => ex.message}.to_json
 | 
						|
      env.response.status_code = 500
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
 | 
						|
    JSON.build do |json|
 | 
						|
      json.array do
 | 
						|
        videos.each do |video|
 | 
						|
          video.to_json(locale, config, Kemal.config, json)
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
{"/api/v1/channels/:ucid/latest", "/api/v1/channels/latest/:ucid"}.each do |route|
 | 
						|
  get route do |env|
 | 
						|
    locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
    env.response.content_type = "application/json"
 | 
						|
 | 
						|
    ucid = env.params.url["ucid"]
 | 
						|
 | 
						|
    begin
 | 
						|
      videos = get_latest_videos(ucid)
 | 
						|
    rescue ex
 | 
						|
      error_message = {"error" => ex.message}.to_json
 | 
						|
      env.response.status_code = 500
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
 | 
						|
    JSON.build do |json|
 | 
						|
      json.array do
 | 
						|
        videos.each do |video|
 | 
						|
          video.to_json(locale, config, Kemal.config, json)
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
{"/api/v1/channels/:ucid/playlists", "/api/v1/channels/playlists/:ucid"}.each do |route|
 | 
						|
  get route do |env|
 | 
						|
    locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
    env.response.content_type = "application/json"
 | 
						|
 | 
						|
    ucid = env.params.url["ucid"]
 | 
						|
    continuation = env.params.query["continuation"]?
 | 
						|
    sort_by = env.params.query["sort"]?.try &.downcase
 | 
						|
    sort_by ||= env.params.query["sort_by"]?.try &.downcase
 | 
						|
    sort_by ||= "last"
 | 
						|
 | 
						|
    begin
 | 
						|
      channel = get_about_info(ucid, locale)
 | 
						|
    rescue ex
 | 
						|
      error_message = {"error" => ex.message}.to_json
 | 
						|
      env.response.status_code = 500
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
 | 
						|
    items, continuation = fetch_channel_playlists(channel.ucid, channel.author, channel.auto_generated, continuation, sort_by)
 | 
						|
 | 
						|
    JSON.build do |json|
 | 
						|
      json.object do
 | 
						|
        json.field "playlists" do
 | 
						|
          json.array do
 | 
						|
            items.each do |item|
 | 
						|
              if item.is_a?(SearchPlaylist)
 | 
						|
                item.to_json(locale, config, Kemal.config, json)
 | 
						|
              end
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
 | 
						|
        json.field "continuation", continuation
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
{"/api/v1/channels/:ucid/comments", "/api/v1/channels/comments/:ucid"}.each do |route|
 | 
						|
  get route do |env|
 | 
						|
    locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
    env.response.content_type = "application/json"
 | 
						|
 | 
						|
    ucid = env.params.url["ucid"]
 | 
						|
 | 
						|
    thin_mode = env.params.query["thin_mode"]?
 | 
						|
    thin_mode = thin_mode == "true"
 | 
						|
 | 
						|
    format = env.params.query["format"]?
 | 
						|
    format ||= "json"
 | 
						|
 | 
						|
    continuation = env.params.query["continuation"]?
 | 
						|
    # sort_by = env.params.query["sort_by"]?.try &.downcase
 | 
						|
 | 
						|
    begin
 | 
						|
      fetch_channel_community(ucid, continuation, locale, config, Kemal.config, format, thin_mode)
 | 
						|
    rescue ex
 | 
						|
      env.response.status_code = 400
 | 
						|
      error_message = {"error" => ex.message}.to_json
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/channels/search/:ucid" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  ucid = env.params.url["ucid"]
 | 
						|
 | 
						|
  query = env.params.query["q"]?
 | 
						|
  query ||= ""
 | 
						|
 | 
						|
  page = env.params.query["page"]?.try &.to_i?
 | 
						|
  page ||= 1
 | 
						|
 | 
						|
  count, search_results = channel_search(query, page, ucid)
 | 
						|
  JSON.build do |json|
 | 
						|
    json.array do
 | 
						|
      search_results.each do |item|
 | 
						|
        item.to_json(locale, config, Kemal.config, json)
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/search" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
  region = env.params.query["region"]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  query = env.params.query["q"]?
 | 
						|
  query ||= ""
 | 
						|
 | 
						|
  page = env.params.query["page"]?.try &.to_i?
 | 
						|
  page ||= 1
 | 
						|
 | 
						|
  sort_by = env.params.query["sort_by"]?.try &.downcase
 | 
						|
  sort_by ||= "relevance"
 | 
						|
 | 
						|
  date = env.params.query["date"]?.try &.downcase
 | 
						|
  date ||= ""
 | 
						|
 | 
						|
  duration = env.params.query["duration"]?.try &.downcase
 | 
						|
  duration ||= ""
 | 
						|
 | 
						|
  features = env.params.query["features"]?.try &.split(",").map { |feature| feature.downcase }
 | 
						|
  features ||= [] of String
 | 
						|
 | 
						|
  content_type = env.params.query["type"]?.try &.downcase
 | 
						|
  content_type ||= "video"
 | 
						|
 | 
						|
  begin
 | 
						|
    search_params = produce_search_params(sort_by, date, content_type, duration, features)
 | 
						|
  rescue ex
 | 
						|
    env.response.status_code = 400
 | 
						|
    error_message = {"error" => ex.message}.to_json
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
 | 
						|
  count, search_results = search(query, page, search_params, region).as(Tuple)
 | 
						|
  JSON.build do |json|
 | 
						|
    json.array do
 | 
						|
      search_results.each do |item|
 | 
						|
        item.to_json(locale, config, Kemal.config, json)
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/search/suggestions" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
  region = env.params.query["region"]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  query = env.params.query["q"]?
 | 
						|
  query ||= ""
 | 
						|
 | 
						|
  begin
 | 
						|
    client = make_client(URI.parse("https://suggestqueries.google.com"))
 | 
						|
    response = client.get("/complete/search?hl=en&gl=#{region}&client=youtube&ds=yt&q=#{URI.escape(query)}&callback=suggestCallback").body
 | 
						|
 | 
						|
    body = response[35..-2]
 | 
						|
    body = JSON.parse(body).as_a
 | 
						|
    suggestions = body[1].as_a[0..-2]
 | 
						|
 | 
						|
    JSON.build do |json|
 | 
						|
      json.object do
 | 
						|
        json.field "query", body[0].as_s
 | 
						|
        json.field "suggestions" do
 | 
						|
          json.array do
 | 
						|
            suggestions.each do |suggestion|
 | 
						|
              json.string suggestion[0].as_s
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  rescue ex
 | 
						|
    env.response.status_code = 500
 | 
						|
    error_message = {"error" => ex.message}.to_json
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/playlists/:plid" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
  plid = env.params.url["plid"]
 | 
						|
 | 
						|
  page = env.params.query["page"]?.try &.to_i?
 | 
						|
  page ||= 1
 | 
						|
 | 
						|
  format = env.params.query["format"]?
 | 
						|
  format ||= "json"
 | 
						|
 | 
						|
  continuation = env.params.query["continuation"]?
 | 
						|
 | 
						|
  if plid.starts_with? "RD"
 | 
						|
    next env.redirect "/api/v1/mixes/#{plid}"
 | 
						|
  end
 | 
						|
 | 
						|
  begin
 | 
						|
    playlist = fetch_playlist(plid, locale)
 | 
						|
  rescue ex
 | 
						|
    error_message = {"error" => "Playlist is empty"}.to_json
 | 
						|
    env.response.status_code = 410
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
 | 
						|
  begin
 | 
						|
    videos = fetch_playlist_videos(plid, page, playlist.video_count, continuation, locale)
 | 
						|
  rescue ex
 | 
						|
    videos = [] of PlaylistVideo
 | 
						|
  end
 | 
						|
 | 
						|
  response = JSON.build do |json|
 | 
						|
    json.object do
 | 
						|
      json.field "type", "playlist"
 | 
						|
      json.field "title", playlist.title
 | 
						|
      json.field "playlistId", playlist.id
 | 
						|
      json.field "playlistThumbnail", playlist.thumbnail
 | 
						|
 | 
						|
      json.field "author", playlist.author
 | 
						|
      json.field "authorId", playlist.ucid
 | 
						|
      json.field "authorUrl", "/channel/#{playlist.ucid}"
 | 
						|
 | 
						|
      json.field "authorThumbnails" do
 | 
						|
        json.array do
 | 
						|
          qualities = {32, 48, 76, 100, 176, 512}
 | 
						|
 | 
						|
          qualities.each do |quality|
 | 
						|
            json.object do
 | 
						|
              json.field "url", playlist.author_thumbnail.gsub(/=\d+/, "=s#{quality}")
 | 
						|
              json.field "width", quality
 | 
						|
              json.field "height", quality
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      json.field "description", html_to_content(playlist.description_html)
 | 
						|
      json.field "descriptionHtml", playlist.description_html
 | 
						|
      json.field "videoCount", playlist.video_count
 | 
						|
 | 
						|
      json.field "viewCount", playlist.views
 | 
						|
      json.field "updated", playlist.updated.to_unix
 | 
						|
 | 
						|
      json.field "videos" do
 | 
						|
        json.array do
 | 
						|
          videos.each do |video|
 | 
						|
            video.to_json(locale, config, Kemal.config, json)
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  if format == "html"
 | 
						|
    response = JSON.parse(response)
 | 
						|
    playlist_html = template_playlist(response)
 | 
						|
    next_video = response["videos"].as_a[1]?.try &.["videoId"]
 | 
						|
 | 
						|
    response = {
 | 
						|
      "playlistHtml" => playlist_html,
 | 
						|
      "nextVideo"    => next_video,
 | 
						|
    }.to_json
 | 
						|
  end
 | 
						|
 | 
						|
  response
 | 
						|
end
 | 
						|
 | 
						|
get "/api/v1/mixes/:rdid" do |env|
 | 
						|
  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
 | 
						|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  rdid = env.params.url["rdid"]
 | 
						|
 | 
						|
  continuation = env.params.query["continuation"]?
 | 
						|
  continuation ||= rdid.lchop("RD")[0, 11]
 | 
						|
 | 
						|
  format = env.params.query["format"]?
 | 
						|
  format ||= "json"
 | 
						|
 | 
						|
  begin
 | 
						|
    mix = fetch_mix(rdid, continuation, locale: locale)
 | 
						|
 | 
						|
    if !rdid.ends_with? continuation
 | 
						|
      mix = fetch_mix(rdid, mix.videos[1].id)
 | 
						|
      index = mix.videos.index(mix.videos.select { |video| video.id == continuation }[0]?)
 | 
						|
    end
 | 
						|
    index ||= 0
 | 
						|
 | 
						|
    mix.videos = mix.videos[index..-1]
 | 
						|
  rescue ex
 | 
						|
    error_message = {"error" => ex.message}.to_json
 | 
						|
    env.response.status_code = 500
 | 
						|
    next error_message
 | 
						|
  end
 | 
						|
 | 
						|
  response = JSON.build do |json|
 | 
						|
    json.object do
 | 
						|
      json.field "title", mix.title
 | 
						|
      json.field "mixId", mix.id
 | 
						|
 | 
						|
      json.field "videos" do
 | 
						|
        json.array do
 | 
						|
          mix.videos.each do |video|
 | 
						|
            json.object do
 | 
						|
              json.field "title", video.title
 | 
						|
              json.field "videoId", video.id
 | 
						|
              json.field "author", video.author
 | 
						|
 | 
						|
              json.field "authorId", video.ucid
 | 
						|
              json.field "authorUrl", "/channel/#{video.ucid}"
 | 
						|
 | 
						|
              json.field "videoThumbnails" do
 | 
						|
                json.array do
 | 
						|
                  generate_thumbnails(json, video.id, config, Kemal.config)
 | 
						|
                end
 | 
						|
              end
 | 
						|
 | 
						|
              json.field "index", video.index
 | 
						|
              json.field "lengthSeconds", video.length_seconds
 | 
						|
            end
 | 
						|
          end
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  if format == "html"
 | 
						|
    response = JSON.parse(response)
 | 
						|
    playlist_html = template_mix(response)
 | 
						|
    next_video = response["videos"].as_a[1]?.try &.["videoId"]
 | 
						|
    next_video ||= ""
 | 
						|
 | 
						|
    response = {
 | 
						|
      "playlistHtml" => playlist_html,
 | 
						|
      "nextVideo"    => next_video,
 | 
						|
    }.to_json
 | 
						|
  end
 | 
						|
 | 
						|
  response
 | 
						|
end
 | 
						|
 | 
						|
get "/api/manifest/dash/id/videoplayback" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.redirect "/videoplayback?#{env.params.query}"
 | 
						|
end
 | 
						|
 | 
						|
get "/api/manifest/dash/id/videoplayback/*" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.redirect env.request.path.lchop("/api/manifest/dash/id")
 | 
						|
end
 | 
						|
 | 
						|
get "/api/manifest/dash/id/:id" do |env|
 | 
						|
  env.response.headers.add("Access-Control-Allow-Origin", "*")
 | 
						|
  env.response.content_type = "application/dash+xml"
 | 
						|
 | 
						|
  local = env.params.query["local"]?.try &.== "true"
 | 
						|
  id = env.params.url["id"]
 | 
						|
  region = env.params.query["region"]?
 | 
						|
 | 
						|
  # Since some implementations create playlists based on resolution regardless of different codecs,
 | 
						|
  # we can opt to only add a source to a representation if it has a unique height within that representation
 | 
						|
  unique_res = env.params.query["unique_res"]? && (env.params.query["unique_res"] == "true" || env.params.query["unique_res"] == "1")
 | 
						|
 | 
						|
  client = make_client(YT_URL)
 | 
						|
  begin
 | 
						|
    video = fetch_video(id, region)
 | 
						|
  rescue ex : VideoRedirect
 | 
						|
    url = "/api/manifest/dash/id/#{ex.message}"
 | 
						|
    if env.params.query
 | 
						|
      url += "?#{env.params.query}"
 | 
						|
    end
 | 
						|
    next env.redirect url
 | 
						|
  rescue ex
 | 
						|
    env.response.status_code = 403
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  if dashmpd = video.player_response["streamingData"]?.try &.["dashManifestUrl"]?.try &.as_s
 | 
						|
    manifest = client.get(dashmpd).body
 | 
						|
 | 
						|
    manifest = manifest.gsub(/<BaseURL>[^<]+<\/BaseURL>/) do |baseurl|
 | 
						|
      url = baseurl.lchop("<BaseURL>")
 | 
						|
      url = url.rchop("</BaseURL>")
 | 
						|
 | 
						|
      if local
 | 
						|
        url = URI.parse(url).full_path
 | 
						|
      end
 | 
						|
 | 
						|
      "<BaseURL>#{url}</BaseURL>"
 | 
						|
    end
 | 
						|
 | 
						|
    next manifest
 | 
						|
  end
 | 
						|
 | 
						|
  adaptive_fmts = video.adaptive_fmts(decrypt_function)
 | 
						|
 | 
						|
  if local
 | 
						|
    adaptive_fmts.each do |fmt|
 | 
						|
      fmt["url"] = URI.parse(fmt["url"]).full_path
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  audio_streams = video.audio_streams(adaptive_fmts)
 | 
						|
  video_streams = video.video_streams(adaptive_fmts).sort_by { |stream| stream["fps"].to_i }.reverse
 | 
						|
 | 
						|
  XML.build(indent: "  ", encoding: "UTF-8") do |xml|
 | 
						|
    xml.element("MPD", "xmlns": "urn:mpeg:dash:schema:mpd:2011",
 | 
						|
      "profiles": "urn:mpeg:dash:profile:full:2011", minBufferTime: "PT1.5S", type: "static",
 | 
						|
      mediaPresentationDuration: "PT#{video.length_seconds}S") do
 | 
						|
      xml.element("Period") do
 | 
						|
        i = 0
 | 
						|
 | 
						|
        {"audio/mp4", "audio/webm"}.each do |mime_type|
 | 
						|
          mime_streams = audio_streams.select { |stream| stream["type"].starts_with? mime_type }
 | 
						|
          if mime_streams.empty?
 | 
						|
            next
 | 
						|
          end
 | 
						|
 | 
						|
          xml.element("AdaptationSet", id: i, mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true) do
 | 
						|
            mime_streams.each do |fmt|
 | 
						|
              codecs = fmt["type"].split("codecs=")[1].strip('"')
 | 
						|
              bandwidth = fmt["bitrate"].to_i * 1000
 | 
						|
              itag = fmt["itag"]
 | 
						|
              url = fmt["url"]
 | 
						|
 | 
						|
              xml.element("Representation", id: fmt["itag"], codecs: codecs, bandwidth: bandwidth) do
 | 
						|
                xml.element("AudioChannelConfiguration", schemeIdUri: "urn:mpeg:dash:23003:3:audio_channel_configuration:2011",
 | 
						|
                  value: "2")
 | 
						|
                xml.element("BaseURL") { xml.text url }
 | 
						|
                xml.element("SegmentBase", indexRange: fmt["index"]) do
 | 
						|
                  xml.element("Initialization", range: fmt["init"])
 | 
						|
                end
 | 
						|
              end
 | 
						|
            end
 | 
						|
          end
 | 
						|
 | 
						|
          i += 1
 | 
						|
        end
 | 
						|
 | 
						|
        {"video/mp4", "video/webm"}.each do |mime_type|
 | 
						|
          mime_streams = video_streams.select { |stream| stream["type"].starts_with? mime_type }
 | 
						|
          if mime_streams.empty?
 | 
						|
            next
 | 
						|
          end
 | 
						|
 | 
						|
          heights = [] of Int32
 | 
						|
          xml.element("AdaptationSet", id: i, mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true, scanType: "progressive") do
 | 
						|
            mime_streams.each do |fmt|
 | 
						|
              codecs = fmt["type"].split("codecs=")[1].strip('"')
 | 
						|
              bandwidth = fmt["bitrate"]
 | 
						|
              itag = fmt["itag"]
 | 
						|
              url = fmt["url"]
 | 
						|
              width, height = fmt["size"].split("x").map { |i| i.to_i }
 | 
						|
 | 
						|
              # Resolutions reported by YouTube player (may not accurately reflect source)
 | 
						|
              height = [4320, 2160, 1440, 1080, 720, 480, 360, 240, 144].sort_by { |i| (height - i).abs }[0]
 | 
						|
              next if unique_res && heights.includes? height
 | 
						|
              heights << height
 | 
						|
 | 
						|
              xml.element("Representation", id: itag, codecs: codecs, width: width, height: height,
 | 
						|
                startWithSAP: "1", maxPlayoutRate: "1",
 | 
						|
                bandwidth: bandwidth, frameRate: fmt["fps"]) do
 | 
						|
                xml.element("BaseURL") { xml.text url }
 | 
						|
                xml.element("SegmentBase", indexRange: fmt["index"]) do
 | 
						|
                  xml.element("Initialization", range: fmt["init"])
 | 
						|
                end
 | 
						|
              end
 | 
						|
            end
 | 
						|
          end
 | 
						|
 | 
						|
          i += 1
 | 
						|
        end
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/api/manifest/hls_variant/*" do |env|
 | 
						|
  client = make_client(YT_URL)
 | 
						|
  manifest = client.get(env.request.path)
 | 
						|
 | 
						|
  if manifest.status_code != 200
 | 
						|
    env.response.status_code = manifest.status_code
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  local = env.params.query["local"]?.try &.== "true"
 | 
						|
 | 
						|
  env.response.content_type = "application/x-mpegURL"
 | 
						|
  env.response.headers.add("Access-Control-Allow-Origin", "*")
 | 
						|
 | 
						|
  host_url = make_host_url(config, Kemal.config)
 | 
						|
 | 
						|
  manifest = manifest.body
 | 
						|
 | 
						|
  if local
 | 
						|
    manifest = manifest.gsub("https://www.youtube.com", host_url)
 | 
						|
    manifest = manifest.gsub("index.m3u8", "index.m3u8?local=true")
 | 
						|
  end
 | 
						|
 | 
						|
  manifest
 | 
						|
end
 | 
						|
 | 
						|
get "/api/manifest/hls_playlist/*" do |env|
 | 
						|
  client = make_client(YT_URL)
 | 
						|
  manifest = client.get(env.request.path)
 | 
						|
 | 
						|
  if manifest.status_code != 200
 | 
						|
    env.response.status_code = manifest.status_code
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  local = env.params.query["local"]?.try &.== "true"
 | 
						|
 | 
						|
  env.response.content_type = "application/x-mpegURL"
 | 
						|
  env.response.headers.add("Access-Control-Allow-Origin", "*")
 | 
						|
 | 
						|
  host_url = make_host_url(config, Kemal.config)
 | 
						|
 | 
						|
  manifest = manifest.body
 | 
						|
 | 
						|
  if local
 | 
						|
    manifest = manifest.gsub(/^https:\/\/r\d---.{11}\.c\.youtube\.com[^\n]*/m) do |match|
 | 
						|
      path = URI.parse(match).path
 | 
						|
 | 
						|
      path = path.lchop("/videoplayback/")
 | 
						|
      path = path.rchop("/")
 | 
						|
 | 
						|
      path = path.gsub(/mime\/\w+\/\w+/) do |mimetype|
 | 
						|
        mimetype = mimetype.split("/")
 | 
						|
        mimetype[0] + "/" + mimetype[1] + "%2F" + mimetype[2]
 | 
						|
      end
 | 
						|
 | 
						|
      path = path.split("/")
 | 
						|
 | 
						|
      raw_params = {} of String => Array(String)
 | 
						|
      path.each_slice(2) do |pair|
 | 
						|
        key, value = pair
 | 
						|
        value = URI.unescape(value)
 | 
						|
 | 
						|
        if raw_params[key]?
 | 
						|
          raw_params[key] << value
 | 
						|
        else
 | 
						|
          raw_params[key] = [value]
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      raw_params = HTTP::Params.new(raw_params)
 | 
						|
      if fvip = raw_params["hls_chunk_host"].match(/r(?<fvip>\d+)---/)
 | 
						|
        raw_params["fvip"] = fvip["fvip"]
 | 
						|
      end
 | 
						|
 | 
						|
      raw_params["local"] = "true"
 | 
						|
 | 
						|
      "#{host_url}/videoplayback?#{raw_params}"
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  manifest
 | 
						|
end
 | 
						|
 | 
						|
# YouTube /videoplayback links expire after 6 hours,
 | 
						|
# so we have a mechanism here to redirect to the latest version
 | 
						|
get "/latest_version" do |env|
 | 
						|
  if env.params.query["download_widget"]?
 | 
						|
    download_widget = JSON.parse(env.params.query["download_widget"])
 | 
						|
 | 
						|
    id = download_widget["id"].as_s
 | 
						|
    title = download_widget["title"].as_s
 | 
						|
 | 
						|
    if label = download_widget["label"]?
 | 
						|
      env.redirect "/api/v1/captions/#{id}?label=#{label}&title=#{title}"
 | 
						|
      next
 | 
						|
    else
 | 
						|
      itag = download_widget["itag"].as_s
 | 
						|
      local = "true"
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  id ||= env.params.query["id"]?
 | 
						|
  itag ||= env.params.query["itag"]?
 | 
						|
 | 
						|
  region = env.params.query["region"]?
 | 
						|
 | 
						|
  local ||= env.params.query["local"]?
 | 
						|
  local ||= "false"
 | 
						|
  local = local == "true"
 | 
						|
 | 
						|
  if !id || !itag
 | 
						|
    env.response.status_code = 400
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  video = fetch_video(id, region)
 | 
						|
 | 
						|
  fmt_stream = video.fmt_stream(decrypt_function)
 | 
						|
  adaptive_fmts = video.adaptive_fmts(decrypt_function)
 | 
						|
 | 
						|
  urls = (fmt_stream + adaptive_fmts).select { |fmt| fmt["itag"] == itag }
 | 
						|
  if urls.empty?
 | 
						|
    env.response.status_code = 404
 | 
						|
    next
 | 
						|
  elsif urls.size > 1
 | 
						|
    env.response.status_code = 409
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  url = urls[0]["url"]
 | 
						|
  if local
 | 
						|
    url = URI.parse(url).full_path.not_nil!
 | 
						|
  end
 | 
						|
 | 
						|
  if title
 | 
						|
    url += "&title=#{title}"
 | 
						|
  end
 | 
						|
 | 
						|
  env.redirect url
 | 
						|
end
 | 
						|
 | 
						|
options "/videoplayback" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
 | 
						|
  env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
 | 
						|
end
 | 
						|
 | 
						|
options "/videoplayback/*" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
 | 
						|
  env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
 | 
						|
end
 | 
						|
 | 
						|
options "/api/manifest/dash/id/videoplayback" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
 | 
						|
  env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
 | 
						|
end
 | 
						|
 | 
						|
options "/api/manifest/dash/id/videoplayback/*" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
 | 
						|
  env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
 | 
						|
end
 | 
						|
 | 
						|
get "/videoplayback/*" do |env|
 | 
						|
  path = env.request.path
 | 
						|
 | 
						|
  path = path.lchop("/videoplayback/")
 | 
						|
  path = path.rchop("/")
 | 
						|
 | 
						|
  path = path.gsub(/mime\/\w+\/\w+/) do |mimetype|
 | 
						|
    mimetype = mimetype.split("/")
 | 
						|
    mimetype[0] + "/" + mimetype[1] + "%2F" + mimetype[2]
 | 
						|
  end
 | 
						|
 | 
						|
  path = path.split("/")
 | 
						|
 | 
						|
  raw_params = {} of String => Array(String)
 | 
						|
  path.each_slice(2) do |pair|
 | 
						|
    key, value = pair
 | 
						|
    value = URI.unescape(value)
 | 
						|
 | 
						|
    if raw_params[key]?
 | 
						|
      raw_params[key] << value
 | 
						|
    else
 | 
						|
      raw_params[key] = [value]
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  query_params = HTTP::Params.new(raw_params)
 | 
						|
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.redirect "/videoplayback?#{query_params}"
 | 
						|
end
 | 
						|
 | 
						|
get "/videoplayback" do |env|
 | 
						|
  query_params = env.params.query
 | 
						|
 | 
						|
  fvip = query_params["fvip"]? || "3"
 | 
						|
  mns = query_params["mn"]?.try &.split(",")
 | 
						|
  mns ||= [] of String
 | 
						|
 | 
						|
  if query_params["region"]?
 | 
						|
    region = query_params["region"]
 | 
						|
    query_params.delete("region")
 | 
						|
  end
 | 
						|
 | 
						|
  if query_params["host"]? && !query_params["host"].empty?
 | 
						|
    host = "https://#{query_params["host"]}"
 | 
						|
    query_params.delete("host")
 | 
						|
  else
 | 
						|
    host = "https://r#{fvip}---#{mns.pop}.googlevideo.com"
 | 
						|
  end
 | 
						|
 | 
						|
  url = "/videoplayback?#{query_params.to_s}"
 | 
						|
 | 
						|
  headers = HTTP::Headers.new
 | 
						|
  REQUEST_HEADERS_WHITELIST.each do |header|
 | 
						|
    if env.request.headers[header]?
 | 
						|
      headers[header] = env.request.headers[header]
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  response = HTTP::Client::Response.new(403)
 | 
						|
  5.times do
 | 
						|
    begin
 | 
						|
      client = make_client(URI.parse(host), region)
 | 
						|
      response = client.head(url, headers)
 | 
						|
      break
 | 
						|
    rescue Socket::Addrinfo::Error
 | 
						|
      if !mns.empty?
 | 
						|
        mn = mns.pop
 | 
						|
      end
 | 
						|
      fvip = "3"
 | 
						|
 | 
						|
      host = "https://r#{fvip}---#{mn}.googlevideo.com"
 | 
						|
    rescue ex
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  if response.headers["Location"]?
 | 
						|
    url = URI.parse(response.headers["Location"])
 | 
						|
    host = url.host
 | 
						|
    env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
    url = url.full_path
 | 
						|
    url += "&host=#{host}"
 | 
						|
 | 
						|
    if region
 | 
						|
      url += "®ion=#{region}"
 | 
						|
    end
 | 
						|
 | 
						|
    next env.redirect url
 | 
						|
  end
 | 
						|
 | 
						|
  if response.status_code >= 400
 | 
						|
    env.response.status_code = response.status_code
 | 
						|
    next
 | 
						|
  end
 | 
						|
 | 
						|
  if url.includes? "&file=seg.ts"
 | 
						|
    if CONFIG.disabled?("livestreams")
 | 
						|
      env.response.status_code = 403
 | 
						|
      error_message = "Administrator has disabled this endpoint."
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
 | 
						|
    begin
 | 
						|
      client = make_client(URI.parse(host), region)
 | 
						|
      client.get(url, headers) do |response|
 | 
						|
        response.headers.each do |key, value|
 | 
						|
          if !RESPONSE_HEADERS_BLACKLIST.includes?(key)
 | 
						|
            env.response.headers[key] = value
 | 
						|
          end
 | 
						|
        end
 | 
						|
 | 
						|
        env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
        if location = response.headers["Location"]?
 | 
						|
          location = URI.parse(location)
 | 
						|
          location = "#{location.full_path}&host=#{location.host}"
 | 
						|
 | 
						|
          if region
 | 
						|
            location += "®ion=#{region}"
 | 
						|
          end
 | 
						|
 | 
						|
          next env.redirect location
 | 
						|
        end
 | 
						|
 | 
						|
        IO.copy(response.body_io, env.response)
 | 
						|
      end
 | 
						|
    rescue ex
 | 
						|
    end
 | 
						|
  else
 | 
						|
    if query_params["title"]? && CONFIG.disabled?("downloads") ||
 | 
						|
       CONFIG.disabled?("dash")
 | 
						|
      env.response.status_code = 403
 | 
						|
      error_message = "Administrator has disabled this endpoint."
 | 
						|
      next error_message
 | 
						|
    end
 | 
						|
 | 
						|
    content_length = nil
 | 
						|
    first_chunk = true
 | 
						|
    range_start, range_end = parse_range(env.request.headers["Range"]?)
 | 
						|
    chunk_start = range_start
 | 
						|
    chunk_end = range_end
 | 
						|
 | 
						|
    if !chunk_end || chunk_end - chunk_start > HTTP_CHUNK_SIZE
 | 
						|
      chunk_end = chunk_start + HTTP_CHUNK_SIZE - 1
 | 
						|
    end
 | 
						|
 | 
						|
    # TODO: Record bytes written so we can restart after a chunk fails
 | 
						|
    while true
 | 
						|
      if !range_end && content_length
 | 
						|
        range_end = content_length
 | 
						|
      end
 | 
						|
 | 
						|
      if range_end && chunk_start > range_end
 | 
						|
        break
 | 
						|
      end
 | 
						|
 | 
						|
      if range_end && chunk_end > range_end
 | 
						|
        chunk_end = range_end
 | 
						|
      end
 | 
						|
 | 
						|
      headers["Range"] = "bytes=#{chunk_start}-#{chunk_end}"
 | 
						|
 | 
						|
      begin
 | 
						|
        client = make_client(URI.parse(host), region)
 | 
						|
        client.get(url, headers) do |response|
 | 
						|
          if first_chunk
 | 
						|
            if !env.request.headers["Range"]? && response.status_code == 206
 | 
						|
              env.response.status_code = 200
 | 
						|
            else
 | 
						|
              env.response.status_code = response.status_code
 | 
						|
            end
 | 
						|
 | 
						|
            response.headers.each do |key, value|
 | 
						|
              if !RESPONSE_HEADERS_BLACKLIST.includes?(key) && key != "Content-Range"
 | 
						|
                env.response.headers[key] = value
 | 
						|
              end
 | 
						|
            end
 | 
						|
 | 
						|
            env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
            if location = response.headers["Location"]?
 | 
						|
              location = URI.parse(location)
 | 
						|
              location = "#{location.full_path}&host=#{location.host}"
 | 
						|
 | 
						|
              if region
 | 
						|
                location += "®ion=#{region}"
 | 
						|
              end
 | 
						|
 | 
						|
              env.redirect location
 | 
						|
              break
 | 
						|
            end
 | 
						|
 | 
						|
            if title = query_params["title"]?
 | 
						|
              # https://blog.fastmail.com/2011/06/24/download-non-english-filenames/
 | 
						|
              env.response.headers["Content-Disposition"] = "attachment; filename=\"#{URI.escape(title)}\"; filename*=UTF-8''#{URI.escape(title)}"
 | 
						|
            end
 | 
						|
 | 
						|
            if !response.headers.includes_word?("Transfer-Encoding", "chunked")
 | 
						|
              content_length = response.headers["Content-Range"].split("/")[-1].to_i64
 | 
						|
              if env.request.headers["Range"]?
 | 
						|
                env.response.headers["Content-Range"] = "bytes #{range_start}-#{range_end || (content_length - 1)}/#{content_length}"
 | 
						|
                env.response.content_length = ((range_end.try &.+ 1) || content_length) - range_start
 | 
						|
              else
 | 
						|
                env.response.content_length = content_length
 | 
						|
              end
 | 
						|
            end
 | 
						|
          end
 | 
						|
 | 
						|
          proxy_file(response, env)
 | 
						|
        end
 | 
						|
      rescue ex
 | 
						|
        if ex.message != "Error reading socket: Connection reset by peer"
 | 
						|
          break
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      chunk_start = chunk_end + 1
 | 
						|
      chunk_end += HTTP_CHUNK_SIZE
 | 
						|
      first_chunk = false
 | 
						|
    end
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
# We need this so the below route works as expected
 | 
						|
get "/ggpht*" do |env|
 | 
						|
end
 | 
						|
 | 
						|
get "/ggpht/*" do |env|
 | 
						|
  host = "https://yt3.ggpht.com"
 | 
						|
  client = make_client(URI.parse(host))
 | 
						|
  url = env.request.path.lchop("/ggpht")
 | 
						|
 | 
						|
  headers = HTTP::Headers.new
 | 
						|
  REQUEST_HEADERS_WHITELIST.each do |header|
 | 
						|
    if env.request.headers[header]?
 | 
						|
      headers[header] = env.request.headers[header]
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  begin
 | 
						|
    client.get(url, headers) do |response|
 | 
						|
      env.response.status_code = response.status_code
 | 
						|
      response.headers.each do |key, value|
 | 
						|
        if !RESPONSE_HEADERS_BLACKLIST.includes? key
 | 
						|
          env.response.headers[key] = value
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
      if response.status_code >= 300
 | 
						|
        env.response.headers.delete("Transfer-Encoding")
 | 
						|
        break
 | 
						|
      end
 | 
						|
 | 
						|
      proxy_file(response, env)
 | 
						|
    end
 | 
						|
  rescue ex
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
options "/sb/:id/:storyboard/:index" do |env|
 | 
						|
  env.response.headers.delete("Content-Type")
 | 
						|
  env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
  env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
 | 
						|
  env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
 | 
						|
end
 | 
						|
 | 
						|
get "/sb/:id/:storyboard/:index" do |env|
 | 
						|
  id = env.params.url["id"]
 | 
						|
  storyboard = env.params.url["storyboard"]
 | 
						|
  index = env.params.url["index"]
 | 
						|
 | 
						|
  if storyboard.starts_with? "storyboard_live"
 | 
						|
    host = "https://i.ytimg.com"
 | 
						|
  else
 | 
						|
    host = "https://i9.ytimg.com"
 | 
						|
  end
 | 
						|
  client = make_client(URI.parse(host))
 | 
						|
 | 
						|
  url = "/sb/#{id}/#{storyboard}/#{index}?#{env.params.query}"
 | 
						|
 | 
						|
  headers = HTTP::Headers.new
 | 
						|
  REQUEST_HEADERS_WHITELIST.each do |header|
 | 
						|
    if env.request.headers[header]?
 | 
						|
      headers[header] = env.request.headers[header]
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  begin
 | 
						|
    client.get(url, headers) do |response|
 | 
						|
      env.response.status_code = response.status_code
 | 
						|
      response.headers.each do |key, value|
 | 
						|
        if !RESPONSE_HEADERS_BLACKLIST.includes? key
 | 
						|
          env.response.headers[key] = value
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
      if response.status_code >= 300
 | 
						|
        env.response.headers.delete("Transfer-Encoding")
 | 
						|
        break
 | 
						|
      end
 | 
						|
 | 
						|
      proxy_file(response, env)
 | 
						|
    end
 | 
						|
  rescue ex
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/s_p/:id/:name" do |env|
 | 
						|
  id = env.params.url["id"]
 | 
						|
  name = env.params.url["name"]
 | 
						|
 | 
						|
  host = "https://i9.ytimg.com"
 | 
						|
  client = make_client(URI.parse(host))
 | 
						|
  url = env.request.resource
 | 
						|
 | 
						|
  headers = HTTP::Headers.new
 | 
						|
  REQUEST_HEADERS_WHITELIST.each do |header|
 | 
						|
    if env.request.headers[header]?
 | 
						|
      headers[header] = env.request.headers[header]
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  begin
 | 
						|
    client.get(url, headers) do |response|
 | 
						|
      env.response.status_code = response.status_code
 | 
						|
      response.headers.each do |key, value|
 | 
						|
        if !RESPONSE_HEADERS_BLACKLIST.includes? key
 | 
						|
          env.response.headers[key] = value
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
      if response.status_code >= 300 && response.status_code != 404
 | 
						|
        env.response.headers.delete("Transfer-Encoding")
 | 
						|
        break
 | 
						|
      end
 | 
						|
 | 
						|
      proxy_file(response, env)
 | 
						|
    end
 | 
						|
  rescue ex
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
get "/vi/:id/:name" do |env|
 | 
						|
  id = env.params.url["id"]
 | 
						|
  name = env.params.url["name"]
 | 
						|
 | 
						|
  host = "https://i.ytimg.com"
 | 
						|
  client = make_client(URI.parse(host))
 | 
						|
 | 
						|
  if name == "maxres.jpg"
 | 
						|
    build_thumbnails(id, config, Kemal.config).each do |thumb|
 | 
						|
      if client.head("/vi/#{id}/#{thumb[:url]}.jpg").status_code == 200
 | 
						|
        name = thumb[:url] + ".jpg"
 | 
						|
        break
 | 
						|
      end
 | 
						|
    end
 | 
						|
  end
 | 
						|
  url = "/vi/#{id}/#{name}"
 | 
						|
 | 
						|
  headers = HTTP::Headers.new
 | 
						|
  REQUEST_HEADERS_WHITELIST.each do |header|
 | 
						|
    if env.request.headers[header]?
 | 
						|
      headers[header] = env.request.headers[header]
 | 
						|
    end
 | 
						|
  end
 | 
						|
 | 
						|
  begin
 | 
						|
    client.get(url, headers) do |response|
 | 
						|
      env.response.status_code = response.status_code
 | 
						|
      response.headers.each do |key, value|
 | 
						|
        if !RESPONSE_HEADERS_BLACKLIST.includes? key
 | 
						|
          env.response.headers[key] = value
 | 
						|
        end
 | 
						|
      end
 | 
						|
 | 
						|
      env.response.headers["Access-Control-Allow-Origin"] = "*"
 | 
						|
 | 
						|
      if response.status_code >= 300 && response.status_code != 404
 | 
						|
        env.response.headers.delete("Transfer-Encoding")
 | 
						|
        break
 | 
						|
      end
 | 
						|
 | 
						|
      proxy_file(response, env)
 | 
						|
    end
 | 
						|
  rescue ex
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
error 404 do |env|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  error_message = "404 Not Found"
 | 
						|
  {"error" => error_message}.to_json
 | 
						|
end
 | 
						|
 | 
						|
error 500 do |env|
 | 
						|
  env.response.content_type = "application/json"
 | 
						|
 | 
						|
  error_message = "500 Server Error"
 | 
						|
  {"error" => error_message}.to_json
 | 
						|
end
 | 
						|
 | 
						|
# Add redirect if SSL is enabled
 | 
						|
if Kemal.config.ssl
 | 
						|
  spawn do
 | 
						|
    server = HTTP::Server.new do |env|
 | 
						|
      redirect_url = "https://#{env.request.host}#{env.request.path}"
 | 
						|
      if env.request.query
 | 
						|
        redirect_url += "?#{env.request.query}"
 | 
						|
      end
 | 
						|
 | 
						|
      if config.hsts
 | 
						|
        env.response.headers["Strict-Transport-Security"] = "max-age=31536000; includeSubDomains; preload"
 | 
						|
      end
 | 
						|
      env.response.headers["Location"] = redirect_url
 | 
						|
      env.response.status_code = 301
 | 
						|
    end
 | 
						|
 | 
						|
    server.bind_tcp "0.0.0.0", 80
 | 
						|
    server.listen
 | 
						|
  end
 | 
						|
end
 | 
						|
 | 
						|
Kemal.config.powered_by_header = false
 | 
						|
add_handler FilteredCompressHandler.new
 | 
						|
add_handler APIHandler.new
 | 
						|
add_handler DenyFrame.new
 | 
						|
add_context_storage_type(Array(String))
 | 
						|
add_context_storage_type(Preferences)
 | 
						|
add_context_storage_type(User)
 | 
						|
 | 
						|
Kemal.config.logger = logger
 | 
						|
Kemal.run
 |