Google Play receipt validation with Google API

android_publisher.rb

# Versão 0.9.1

require 'google/apis/androidpublisher_v2'

receipt = JSON.parse(File.read('spec/support/receipts/android.json'))

package_name = receipt['packageName']
product_id = receipt['productId']
purchase_token = receipt['purchaseToken']

Google::Apis::ClientOptions.default.application_name = "Application Name"
Google::Apis::ClientOptions.default.application_version = "1.0"

key_content = File.open("config/p12_key.p12", "rb") { |io| io.read }
key = OpenSSL::PKCS12.new(key_content, 'notasecret').key

Google::Apis::RequestOptions.default.authorization = Signet::OAuth2::Client.new(
	:token_credential_uri => 'https://accounts.google.com/o/oauth2/token',
  :audience => 'https://accounts.google.com/o/oauth2/token',
  :scope => 'https://www.googleapis.com/auth/androidpublisher',
	:issuer => 'xxxcc.apps.googleusercontent.com',
	:signing_key => key
)

service = Google::Apis::AndroidpublisherV2::AndroidPublisherService.new
service.get_purchase_product(package_name, product_id, purchase_token).as_json