How to handle Google Play Subscription

Verify token

First time, user subscribes, You need to verify a purchase token.

 

there are two APIs (V, V2)

If you want to know trial status of subscrtion, use V because of parameter purchaseType

V2 doesn’t support this parameter yet (23.01.01).

 

POST

@param { purchaseToken }

@path /api/iap/verify/google

Ref. https://developers.google.com/android-publisher/api-ref/rest/v3/purchases.subscriptions

 

{

"isSuccessful": true,

"errorMessage": null,

"payload": {

     "startTimeMillis": "1666693125073",

  "expiryTimeMillis": "1666693170935",

  "autoRenewing": false,

   "priceCurrencyCode": "KRW",

   "priceAmountMicros": "7900000000",

  "countryCode": "KR",

    "developerPayload": "",

      "cancelReason": 2,

  "orderId": "GPA.0000-6933-1569-77703",

 "linkedPurchaseToken":"olaclkgakogdalhpikoblhac.AO-J1OwhYqKZaeUqT1mXvr4z8OsjmMX88QHfvlRf—--"

      "purchaseType": 0,

  "acknowledgementState": 1,

  "kind": "androidpublisher#subscriptionPurchase"

}

 

Ref. https://developers.google.com/android-publisher/api-ref/rest/v3/purchases.subscriptionsv2

 

{

  "kind": string,

  "regionCode": string,

  "latestOrderId": string,

  "lineItems": [

    {

      object (SubscriptionPurchaseLineItem)

    }

  ],

  "startTime": string,

  "subscriptionState": enum (SubscriptionState),

  "linkedPurchaseToken": string,

  "pausedStateContext": {

    object (PausedStateContext)

  },

  "canceledStateContext": {

    object (CanceledStateContext)

  },

  "testPurchase": {

    object (TestPurchase)

  },

  "acknowledgementState": enum (AcknowledgementState),

  "externalAccountIdentifiers": {

    object (ExternalAccountIdentifiers)

  },

  "subscribeWithGoogleInfo": {

    object (SubscribeWithGoogleInfo)

  }

}

 

SubscriptionPurchaseLineItem

{

  "productId": string,

  "expiryTime": string,

 

  // Union field plan_type can be only one of the following:

  "autoRenewingPlan": {

    object (AutoRenewingPlan)

  },

  "prepaidPlan": {

    object (PrepaidPlan)

  }

  // End of list of possible types for union field plan_type.

}

Response

 

Google Realtime Notification

Ref. https://developer.android.com/google/play/billing/rtdn-reference

Config. Google Cloud - Pub/Sub

 

Response

After you decode the base64-encoded data field, the DeveloperNotification contains the following fields:

A subscriptionNotification contains the following fields:

{

  "version":"1.0",

  "packageName":"com.some.thing",

  "eventTimeMillis":"1503349566168",

  "subscriptionNotification":

  {

    "version":"1.0",

    "notificationType":4,

    "purchaseToken":"PURCHASE_TOKEN",

    "subscriptionId":"monthly001"

  }

}

• Use notificationType and subscriptionId
• Verify token again