calling google spreadsheet api using ruby client lib

echo_google_spreadsheet

#!/usr/bin/env ruby
SECRET_JSON_VARIABLE = 'GOOGLE_APPLICATION_CREDENTIALS'.freeze
raise 'please define an env variable GOOGLE_APPLICATION_CREDENTIALS pointing to your client_secrets.json' unless ENV[SECRET_JSON_VARIABLE]
raise 'please provide the spreadsheet id' if ARGV[0].nil?

require 'google/clients/spreadsheet_client'
require 'google/models/spreadsheet'

spreadsheet_id = ARGV[0]
spreadsheet = Google::Models::Spreadsheet.new(spreadsheet_id: spreadsheet_id)
sheet1 = spreadsheet.sheet('Hoja 1')
sheet1.each { |row| p row }

lib.google.models.spreadsheet.rb

module Google
  module Models
    class Spreadsheet
      def initialize(options = {})
        @service = Google::Clients::SpreadsheetClient.new
        @spreadsheet_id = options[:spreadsheet_id]
        @sheets = {}
      end

      def sheet(sheet_name)
        @sheets[sheet_name] ||= @service.get_spreadsheet_values(@spreadsheet_id, sheet_name).values
      end
    end
  end
end

lib_google.clients.spreadsheet_client.rb

require 'google/apis/sheets_v4'
require 'google/api_client/client_secrets'

module Google
  module Clients
    class SpreadsheetClient
      def initialize
        @service = Google::Apis::SheetsV4::SheetsService.new
        @service.authorization = Google::Auth.get_application_default(Google::Apis::SheetsV4::AUTH_SPREADSHEETS)
      end

      def get_spreadsheet_values(spreadsheet_id, range)
        @service.get_spreadsheet_values(spreadsheet_id, range)
      end
    end
  end
end