#!/usr/bin/env ruby
# Encoding: utf-8
#
# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# This code example gets non-removed responsive search ads in
# a specified ad group.
# To add responsive search ads, run add_responsive_search_ad.rb.
# To get ad groups, run get_ad_groups.rb.

require 'optparse'
require 'google/ads/google_ads'

def get_responsive_search_ads(customer_id, ad_group_id = nil)
  # GoogleAdsClient will read a config file from
  # ENV['HOME']/google_ads_config.rb when called without parameters
  client = Google::Ads::GoogleAds::GoogleAdsClient.new

  search_query = <<~QUERY
    SELECT ad_group.id,
           ad_group_ad.ad.id,
           ad_group_ad.ad.responsive_search_ad.headlines,
           ad_group_ad.ad.responsive_search_ad.descriptions,
           ad_group_ad.status
    FROM ad_group_ad
    WHERE ad_group_ad.ad.type = RESPONSIVE_SEARCH_AD
      AND ad_group_ad.status != 'REMOVED'
  QUERY

  if ad_group_id
    search_query << " AND ad_group.id = #{ad_group_id}"
  end

  responses = client.service.google_ads.search_stream(
    customer_id: customer_id,
    query: search_query
  )

  responses.each do |response|
    response.results.each do |row|
      ad = row.ad_group_ad.ad
      if ad.responsive_search_ad
        rsa = ad.responsive_search_ad

        headlines = ''
        rsa.headlines.each{ |h| headlines << h.text << ', ' }

        descriptions = ''
        rsa.descriptions.each{ |d| descriptions << d.text << ', ' }

        puts "Responsive search ad with ID #{ad.id}, status #{row.ad_group_ad.status}, " \
            "headlines '#{headlines}', and descriptions '#{descriptions}' was found in ad group " \
            "with ID #{row.ad_group.id}."
      end
    end
  end
end

if __FILE__ == $0
  options = {}
  # The following parameter(s) should be provided to run the example. You can
  # either specify these by changing the INSERT_XXX_ID_HERE values below, or on
  # the command line.
  #
  # Parameters passed on the command line will override any parameters set in
  # code.
  #
  # Running the example with -h will print the command line usage.
  options[:customer_id] = 'INSERT_CUSTOMER_ID_HERE'
  options[:ad_group_id] = nil

  OptionParser.new do |opts|
    opts.banner = sprintf('Usage: %s [options]', File.basename(__FILE__))

    opts.separator ''
    opts.separator 'Options:'

    opts.on('-C', '--customer-id CUSTOMER-ID', String, 'Customer ID') do |v|
      options[:customer_id] = v
    end

    opts.on('-A', '--ad-group-id AD-GROUP-ID', String,
        '(Optional) Ad Group ID') do |v|
      options[:ad_group_id] = v
    end

    opts.separator ''
    opts.separator 'Help:'

    opts.on_tail('-h', '--help', 'Show this message') do
      puts opts
      exit
    end
  end.parse!

  begin
    get_responsive_search_ads(options.fetch(:customer_id).tr("-", ""), options[:ad_group_id])
  rescue Google::Ads::GoogleAds::Errors::GoogleAdsError => e
    e.failure.errors.each do |error|
      STDERR.printf("Error with message: %s\n", error.message)
      if error.location
        error.location.field_path_elements.each do |field_path_element|
          STDERR.printf("\tOn field: %s\n", field_path_element.field_name)
        end
      end
      error.error_code.to_h.each do |k, v|
        next if v == :UNSPECIFIED
        STDERR.printf("\tType: %s\n\tCode: %s\n", k, v)
      end
    end
    raise
  end
end
