mishina2228/youtube-api-trial

# frozen_string_literal: true

module Mishina
  module Youtube
    class Service
      attr_accessor :service

      def initialize(options = {})
        service = Google::Apis::YoutubeV3::YouTubeService.new
        service.key = options.delete(:api_key)
        service.authorization = options.delete(:credentials)
        self.service = service
      end

      def statistics(channel_id)
        status, res, error = get_channel('statistics', channel_id)
        statics = res.items.first.statistics if error.blank?
        Mishina::Youtube::ServiceResponse.new(status, statics, error)
      end

      def snippet(channel_id)
        status, res, error = get_channel('snippet', channel_id)
        snippet = res.items.first.snippet if error.blank?
        Mishina::Youtube::ServiceResponse.new(status, snippet, error)
      end

      # @return [Google::Apis::YoutubeV3::ListSubscriptionResponse]
      def subscriptions(token:, max_results:)
        service.list_subscriptions('snippet', mine: true, max_results: max_results, page_token: token)
      end

      # @return [Google::Apis::YoutubeV3::SearchListsResponse]
      def search_channel(query, max_results:, token:, safe_search: 'moderate')
        service.list_searches(
          'snippet',
          q: query, safe_search: safe_search, type: 'channel', max_results: max_results, page_token: token
        )
      end

      private

      # @return [Array(Integer, Google::Apis::YoutubeV3::ListChannelsResponse, StandardError)]
      def get_channel(part, channel_id)
        response = service.list_channels(part, id: channel_id)
        if response.items.blank?
          [Consts::Statuses::BLANK, response, Mishina::Youtube::NoChannelError.new(channel_id)]
        else
          [Consts::Statuses::OK, response, nil]
        end
      rescue Google::Apis::ClientError => e
        [Consts::Statuses::ERROR, nil, e]
      end
    end
  end
end