thibaudgg/video_info

class VideoInfo
  module Providers
    module YoutubeAPI
      def available?
        if !data["items"].empty?
          upload_status = data["items"][0]["status"]["uploadStatus"]
          upload_status != "rejected"
        else
          false
        end
      rescue VideoInfo::HttpError
        false
      end

      def api_key
        VideoInfo.provider_api_keys[:youtube]
      end

      def author
        _video_snippet["channelTitle"]
      end

      def author_thumbnail
        _channel_snippet["thumbnails"]["default"]["url"]
      end

      def author_url
        channel_id = _channel_info["items"][0]["id"]
        "https://www.youtube.com/channel/" + channel_id
      end

      def title
        _video_snippet["title"]
      end

      def description
        _video_snippet["description"]
      end

      def keywords
        _video_snippet["tags"]
      end

      def duration
        video_duration = _video_content_details["duration"] || 0
        ISO8601::Duration.new(video_duration).to_seconds.to_i
      end

      def date
        return unless (published_at = _video_snippet["publishedAt"])
        Time.parse(published_at, Time.now.utc)
      end

      def view_count
        stats["viewCount"].to_i
      end

      def stats
        return {} unless available?
        data["items"][0]["statistics"]
      end

      private

      def _api_base
        "www.googleapis.com"
      end

      def _api_path
        "/youtube/v3/videos?id=#{video_id}" \
        "&part=snippet,statistics,status,contentDetails&fields=" \
        "items(id,snippet,statistics,status,contentDetails)&key=#{api_key}"
      end

      def _api_url
        "https://#{_api_base}#{_api_path}"
      end

      def _video_snippet
        return {} unless available?
        data["items"][0]["snippet"]
      end

      def _channel_api_url(channel_id)
        "https://#{_api_base}/youtube/v3/channels?part=snippet&id" \
        "=#{channel_id}&key=#{api_key}"
      end

      def _channel_info
        channel_url = _channel_api_url(_video_snippet["channelId"])
        @_channel_info ||= JSON.parse(URI.parse(channel_url).read)
      end

      def _channel_snippet
        _channel_info["items"][0]["snippet"]
      end

      def _video_content_details
        return {} unless available?
        data["items"][0]["contentDetails"]
      end

      def _video_thumbnail(id)
        _video_entry["media$group"]["media$thumbnail"][id]["url"]
      end
    end
  end
end