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# This class shows uses version 0.28.7 of the ruby google-api-client gem circa April 2019
# to query the Google Play subscription API.
#
# If using an older version of the google-api-client gem (ie. version 0.8.x), instead refer to:
# https://gist.github.com/jkotchoff/e60fdf048ec443272045/e3e2c867633900d9d6f53de2de13aa0a0a16bb03
#
# Sample usage:
#
# package_name = 'com.stocklight.stocklightapp'
# product_id = 'com.stocklight.stocklight.standardsubscription'
# purchase_token = 'kmigoi....4YuSQtU8U'
# subscription = GooglePlaySubscriptionVerification.new(package_name, product_id, purchase_token)
#
# => #<Google::Apis::AndroidpublisherV2::SubscriptionPurchase:0x007fbcb3b89698 @auto_renewing=false,
# @cancel_reason=0, @country_code="AU", @developer_payload="", @expiry_time_millis="1468673994725",
# @kind="androidpublisher#subscriptionPurchase", @price_amount_micros="9490000", @price_currency_code="AUD",
# @start_time_millis="1458133289294">
#
# subscription_cancelled = subscription.cancel_reason.present?
#
# https://developers.google.com/android-publisher/api-ref/purchases/subscriptions
class GooglePlaySubscriptionVerification
require 'google/apis/androidpublisher_v3'
require 'googleauth'
require 'googleauth/stores/file_token_store'
# These credentials come from creating an OAuth Web Application client ID
# in the Google developer console
#
# refer: https://www.youtube.com/watch?v=hfWe1gPCnzc
#
# ie.
# > visit http://console.developers.google.com
# > API Manager
# > Credentials
# > Create Credentials (OAuth client ID)
# > Application type: Web Application
# > Authorised redirect URIs: https://developers.google.com/oauthplayground
# * the resultant client ID / client secret goes in the following GOOGLE_KEY / GOOGLE_SECRET variables
# > visit: https://developers.google.com/oauthplayground/
# > Click the settings icon to show the OAuth 2.0 configuration
# > Tick 'Use your own OAuth credentials'
# > Enter the OAuth Client ID and OAuth Client secret that you have just created
# > Check the entry for 'Google Play Developer API v2' in the scopes field and click 'Authorize APIs'
# > Click 'Allow'
# > Click 'Exchange authorization code for tokens'
# * the resultant Refresh token and Access token go in the following REFRESH_TOKEN / ACCESS_TOKEN variables
GOOGLE_KEY = 'xxxcc.apps.googleusercontent.com'
GOOGLE_SECRET = 'abcd'
ACCESS_TOKEN = 'abcd'
REFRESH_TOKEN = 'abcd'
Androidpublisher = Google::Apis::AndroidpublisherV3
# @param package_name - refers to the Google Play package name for the app
# eg. 'com.stocklight.stocklightapp'
#
# @param product_id - refers to the id of the subscription type being checked
# eg. 'com.stocklight.stocklight.standardsubscription'
#
# @param purchase_token - the purchase token receipt
# eg. 'kmigoi....4YuSQtU8U'
def initialize(package_name, product_id, purchase_token)
@package_name = package_name
@product_id = product_id
@purchase_token = purchase_token
end
# Throws Google::Apis::ClientError if an invalid parameter is provided
def verify
android_publisher.get_purchase_subscription @package_name, @product_id, @purchase_token
end
private
def android_publisher
android_publisher = Androidpublisher::AndroidPublisherService.new.tap do |publisher|
publisher.authorization = client
publisher.authorization.fetch_access_token!
end
end
def client(scopes = [Androidpublisher::AUTH_ANDROIDPUBLISHER])
Signet::OAuth2::Client.new(
authorization_uri: 'https://accounts.google.com/o/oauth2/auth',
token_credential_uri: 'https://accounts.google.com/o/oauth2/token',
client_id: GOOGLE_KEY,
client_secret: GOOGLE_SECRET,
access_token: ACCESS_TOKEN,
refresh_token: REFRESH_TOKEN,
scope: scopes,
)
end
end
@TeTiRoss

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@TeTiRoss TeTiRoss commented Sep 5, 2018

Hi! Thank you very much for this gist, especially for explenation how to get credentials.
But, in the Sample usage section you are showing that: subscription = GooglePlaySubscriptionVerification.new(package_name, product_id, purchase_token) will result in Google::Apis::AndroidpublisherV2::SubscriptionPurchase object, but actually you will get a GooglePlaySubscriptionVerification object. To get Google::Apis::AndroidpublisherV2::SubscriptionPurchase you will need to add .verify to GooglePlaySubscriptionVerification.new(package_name, product_id, purchase_token).

@sighmon

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@sighmon sighmon commented Feb 21, 2020

To verify a product purchase:

def verify_product
  android_publisher.get_purchase_product @package_name, @product_id, @purchase_token
end

Response looks like this:

Success - #<Google::Apis::AndroidpublisherV3::ProductPurchase:0x00000000000
 @consumption_state=0,
 @developer_payload="",
 @kind="androidpublisher#productPurchase",
 @order_id="<order_id>",
 @purchase_state=0,
 @purchase_time_millis=1582251976970,
 @purchase_type=0>
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