def fetch_trending(trending_type, region, locale) client = make_client(YT_URL) headers = HTTP::Headers.new headers["User-Agent"] = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36" region ||= "US" region = region.upcase trending = "" plid = nil if trending_type && trending_type != "Default" trending_type = trending_type.downcase.capitalize response = client.get("/feed/trending?gl=#{region}&hl=en", headers).body yt_data = response.match(/window\["ytInitialData"\] = (?.*);/) if yt_data yt_data = JSON.parse(yt_data["data"].rchop(";")) else raise translate(locale, "Could not pull trending pages.") end tabs = yt_data["contents"]["twoColumnBrowseResultsRenderer"]["tabs"][0]["tabRenderer"]["content"]["sectionListRenderer"]["subMenu"]["channelListSubMenuRenderer"]["contents"].as_a url = tabs.select { |tab| tab["channelListSubMenuAvatarRenderer"]["title"]["simpleText"] == trending_type }[0]? if url url["channelListSubMenuAvatarRenderer"]["navigationEndpoint"]["commandMetadata"]["webCommandMetadata"]["url"] url = url["channelListSubMenuAvatarRenderer"]["navigationEndpoint"]["commandMetadata"]["webCommandMetadata"]["url"].as_s url += "&disable_polymer=1&gl=#{region}&hl=en" trending = client.get(url).body plid = extract_plid(url) else trending = client.get("/feed/trending?gl=#{region}&hl=en&disable_polymer=1").body end else trending = client.get("/feed/trending?gl=#{region}&hl=en&disable_polymer=1").body end trending = XML.parse_html(trending) nodeset = trending.xpath_nodes(%q(//ul/li[@class="expanded-shelf-content-item-wrapper"])) trending = extract_videos(nodeset) return {trending, plid} end def extract_plid(url) wrapper = HTTP::Params.parse(URI.parse(url).query.not_nil!)["bp"] wrapper = URI.unescape(wrapper) wrapper = Base64.decode(wrapper) # 0xe2 0x02 0x2e wrapper += 3 # 0x0a wrapper += 1 # Looks like "/m/[a-z0-9]{5}", not sure what it does here item_size = wrapper[0] wrapper += 1 item = wrapper[0, item_size] wrapper += item.size # 0x12 wrapper += 1 plid_size = wrapper[0] wrapper += 1 plid = wrapper[0, plid_size] wrapper += plid.size plid = String.new(plid) return plid end