#!/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 example uses Customer Match to create a new user list (a.k.a. audience)
# and adds users to it.
#
# This example illustrates adding a custom audience. Custom audiences help you
# reach your ideal audience by entering relevant keywords, URLs and apps.
# For more information about custom audiences, see:
# https://support.google.com/google-ads/answer/9805516.

require 'optparse'
require 'google/ads/google_ads'
require 'date'
require 'digest'

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

  # Creates a custom audience operation.
  operation = client.operation.create_resource.custom_audience do |ca|
    ca.name = "Example Custom Audience ##{(Time.new.to_f * 1000).to_i}"
    ca.description = "Custom audiences who have searched specific terms on Google Search"
    # Match customers by what they searched on Google Search.
    # Note: "INTEREST" OR "PURCHASE_INTENT" is not allowed for the type field
    # of newly created custom audience. Use "AUTO" instead of these 2 options
    # when creating a new custom audience.
    ca.type = :SEARCH
    ca.status = :ENABLED
    # List of members that this custom audience is composed of. Customers that
    # meet any of the membership conditions will be reached.
    ca.members += [
      # Keywords or keyword phrases, which describe the customers' interests
      # or search terms.
      create_custom_audience_member(client, :KEYWORD, "Mars Cruise"),
      create_custom_audience_member(client, :KEYWORD, "Jupiter Cruise"),
      # Website URLs that your customers might visit.
      create_custom_audience_member(client, :URL, "http://www.example.com/locations/mars"),
      create_custom_audience_member(client, :URL, "http://www.example.com/locations/jupiter"),
      # Package names of Android apps which customers might install.
      create_custom_audience_member(client, :APP, "com.google.android.apps.adwords"),
    ]
  end

  # Issues a mutate request to add the custom audience.
  response = client.service.custom_audience.mutate_custom_audiences(
    customer_id: customer_id,
    operations: [operation],
  )
  puts "New custom audience added with resource name: " \
    "'#{response.results.first.resource_name}'."
end

# Creates a custom audience member.
def create_custom_audience_member(client, member_type, member_value)
  client.resource.custom_audience_member do |m|
    m.member_type = member_type
    case member_type
    when :KEYWORD
      m.keyword = member_value
    when :URL
      m.url = member_value
    when :APP
      m.app = member_value
    else
      raise "Invalid audience member type."
    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'

  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.separator ''
    opts.separator 'Help:'

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

  begin
    add_custom_audience(options.fetch(:customer_id).tr("-", ""))
  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

