183 lines
4 KiB
Crystal
183 lines
4 KiB
Crystal
require "http/client"
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require "json"
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require "kemal"
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require "pg"
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require "xml"
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class AdaptiveFmts
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JSON.mapping(
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clen: Int32,
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url: String,
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lmt: Int64,
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index: String,
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fps: Int32,
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itag: Int32,
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projection_type: Int32,
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size: String,
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init: String,
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quality_label: String,
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bitrate: Int32,
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type: String
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)
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end
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class URLEncodedFmtStreamMap
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JSON.mapping(
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url: String,
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itag: Int32,
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fallback_host: String,
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quality: String,
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type: String
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)
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end
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class CaptionTracks
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JSON.mapping(
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v: String,
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lc: String,
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t: String,
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u: String
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)
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end
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class CaptionTranslationLanguages
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JSON.mapping(
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lc: String,
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n: String
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)
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end
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class VideoInfo
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JSON.mapping(
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cver: String,
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length_seconds: Int32,
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iurlhq720: String,
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vm: String,
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ypc_ad_indicator: Int32,
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hash_cc: Bool,
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dashmpd: String,
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iv3_module: Int32,
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iurlmq: String,
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no_get_video_log: Int32,
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cc_font: Int32,
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allowed_ads: String,
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oid: String,
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iv_invideo_url: String,
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cc_asr: Int32,
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relative_loudness: Float64,
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video_verticals: String,
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default_audio_track_index: Int32,
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loudness: Float64,
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ptchn: String,
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csn: String,
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pltype: String,
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author: String,
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# caption_audio_tracks:
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videostats_playback_base_url: String,
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root_ve_type: String,
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muted: Int32,
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cc3_module: Int32,
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adaptive_fmts: AdaptiveFmts,
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fmt_list: Array(String),
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allow_embed: Int32,
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iurlhq: String,
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use_cipher_signature: Bool,
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status: String,
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video_id: String,
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idpj: Int32,
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iurlhmaxres: String,
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short_view_count_text: String,
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iv_load_policy: Int32,
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plid: String,
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vss_host: String,
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ttsurl: String,
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token: String,
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account_playback_token: String,
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of: String,
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iurl: String,
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iurlsd: String,
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c: String,
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timestamp: Int32,
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url_encoded_fmt_stream_map: URLEncodedFmtStreamMap,
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allow_ratings: Int32,
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view_count: Int64,
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title: String,
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caption_tracks: CaptionTracks,
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fexp: Array(String),
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storyboard_spec: String,
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keywords: Array(String),
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ucid: String,
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remarketing_url: String,
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caption_translation_languages: CaptionTranslationLanguages,
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avg_rating: Float64,
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is_listed: Int32,
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ptk: String,
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cl: Int32,
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watermark: Array(String),
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ldpj: Int32,
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tmi: Int32,
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eventid: String,
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thumbnail_url: String
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)
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end
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macro templated(filename)
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render "src/views/#{{{filename}}}.ecr", "src/views/layout.ecr"
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end
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context = OpenSSL::SSL::Context::Client.insecure
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client = HTTP::Client.new("www.youtube.com", 443, context)
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video_id = "Vufba_ZcoR0"
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video_info = client.get("/get_video_info?video_id=#{video_id}&el=info&ps=default&eurl=&gl=US&hl=en").body
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p VideoInfo.from_json(video_info)
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get "/" do |env|
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templated "index"
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end
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get "/watch/:video_id" do |env|
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video_id = env.params.url["video_id"]
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client = HTTP::Client.new("www.youtube.com", 443, context)
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video_info = client.get("/get_video_info?video_id=#{video_id}&el=info&ps=default&eurl=&gl=US&hl=en").body
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video_info = HTTP::Params.parse(video_info)
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pageContent = client.get("/watch?v=#{video_id}").body
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doc = XML.parse(pageContent)
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fmt_stream = [] of HTTP::Params
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video_info["url_encoded_fmt_stream_map"].split(",") do |string|
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fmt_stream << HTTP::Params.parse(string)
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end
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fmt_stream.reverse! # We want lowest quality first
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# css query [title="I like this"] > span
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likes = doc.xpath_node(%q(//button[@title="I like this"]/span))
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if likes
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likes = likes.content.delete(",").to_i
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else
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likes = 1
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end
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# css query [title="I dislike this"] > span
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dislikes = doc.xpath_node(%q(//button[@title="I dislike this"]/span))
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if dislikes
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dislikes = dislikes.content.delete(",").to_i
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else
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dislikes = 1
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end
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engagement = ((dislikes.to_f32 + likes.to_f32)*100 / video_info["view_count"].to_f32).significant(2)
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calculated_rating = likes.to_f32/(likes.to_f32 + dislikes.to_f32)*4 + 1
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templated "watch"
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end
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public_folder "assets"
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Kemal.run
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