btrc-hub/backend/app/services/youtube/search_client.rb

module Youtube
  class SearchClient
    API_BASE = 'https://www.googleapis.com/youtube/v3'

    def initialize api_key: ENV.fetch('YOUTUBE_API_KEY')
      @api_key = api_key
    end

    def search_videos query:, published_after: nil, published_before: nil, page_token: nil
      response = connection.get('search', {
          part: 'snippet',
          q: query,
          type: 'video',
          order: 'date',
          maxResults: 50,
          regionCode: 'JP',
          relevanceLanguage: 'ja',
          publishedAfter: published_after&.iso8601,
          publishedBefore: published_before&.iso8601,
          pageToken: page_token,
          key: @api_key }.compact)

      JSON.parse(response.body)
    end

    private

    def connection
      @connection ||= Faraday.new(url: API_BASE) do |faraday|
        faraday.response :raise_error
      end
    end
  end
end