append new IAP receipt fields

appstore/model.go

@@ -1,10 +1,19 @@
 package appstore
 
 type (
+	// https://developer.apple.com/library/content/releasenotes/General/ValidateAppStoreReceipt/Chapters/ValidateRemotely.html
 	// The IAPRequest type has the request parameter
 	IAPRequest struct {
-		ReceiptData string `json:"receipt-data"`
-		Password    string `json:"password,omitempty"`
+		ReceiptData            string `json:"receipt-data"`
+		Password               string `json:"password,omitempty"`
+		ExcludeOldTransactions bool   `json:"exclude_old_transactions,omitempty"`
+	}
+
+	// The ReceiptCreationDate type indicates the date when the app receipt was created.
+	ReceiptCreationDate struct {
+		CreationDate    string `json:"receipt_creation_date"`
+		CreationDateMS  string `json:"receipt_creation_date_ms"`
+		CreationDatePST string `json:"receipt_creation_date_pst"`
 	}
 
 	// The RequestDate type indicates the date and time that the request was sent
@@ -48,14 +57,23 @@ type (
 		ProductID                 string `json:"product_id"`
 		TransactionID             string `json:"transaction_id"`
 		OriginalTransactionID     string `json:"original_transaction_id"`
-		IsTrialPeriod             string `json:"is_trial_period"`
 		AppItemID                 string `json:"app_item_id"`
 		VersionExternalIdentifier string `json:"version_external_identifier"`
 		WebOrderLineItemID        string `json:"web_order_line_item_id"`
+
+		IsTrialPeriod                  string `json:"is_trial_period"`
+		SubscriptionExpirationIntent   string `json:"expiration_intent"`
+		SubscriptionRetryFlag          string `json:"is_in_billing_retry_period"`
+		SubscriptionAutoRenewProductID string `json:"auto_renew_product_id"`
+		SubscriptionAutoRenewStatus    string `json:"auto_renew_status"`
+		SubscriptionPriceConsentStatus string `json:"price_consent_status"`
+		ExpiresDate
+
 		PurchaseDate
 		OriginalPurchaseDate
-		ExpiresDate
+
 		CancellationDate
+		CancellationReason string `json:"cancellation_reason"`
 	}
 
 	// The Receipt type has whole data of receipt
@@ -66,22 +84,37 @@ type (
 		BundleID                   string  `json:"bundle_id"`
 		ApplicationVersion         string  `json:"application_version"`
 		DownloadID                 int64   `json:"download_id"`
+		VersionExternalIdentifier  int64   `json:"version_external_identifier"`
 		OriginalApplicationVersion string  `json:"original_application_version"`
 		InApp                      []InApp `json:"in_app"`
+		ReceiptCreationDate
 		RequestDate
 		OriginalPurchaseDate
 	}
 
+	// A pending renewal may refer to a renewal that is scheduled in the future or a renewal that failed in the past for some reason.
+	PendingRenewalInfo struct {
+		SubscriptionExpirationIntent   string `json:"expiration_intent"`
+		SubscriptionAutoRenewProductID string `json:"auto_renew_product_id"`
+		SubscriptionRetryFlag          string `json:"is_in_billing_retry_period"`
+		SubscriptionAutoRenewStatus    string `json:"auto_renew_status"`
+		SubscriptionPriceConsentStatus string `json:"price_consent_status"`
+		ProductID                      string `json:"product_id"`
+	}
+
 	// The IAPResponse type has the response properties
 	// We defined each field by the current IAP response, but some fields are not mentioned
 	// in the following Apple's document;
 	// https://developer.apple.com/library/ios/releasenotes/General/ValidateAppStoreReceipt/Chapters/ReceiptFields.html
 	// If you get other types or fileds from the IAP response, you should use the struct you defined.
 	IAPResponse struct {
-		Status            int     `json:"status"`
-		Environment       string  `json:"environment"`
-		Receipt           Receipt `json:"receipt"`
-		LatestReceiptInfo []InApp `json:"latest_receipt_info"`
-		LatestReceipt     string  `json:"latest_receipt"`
+		Status                   int                  `json:"status"`
+		Environment              string               `json:"environment"`
+		Receipt                  Receipt              `json:"receipt"`
+		LatestReceiptInfo        []InApp              `json:"latest_receipt_info"`
+		LatestReceipt            string               `json:"latest_receipt"`
+		LatestExpiredReceiptInfo InApp                `json:"latest_expired_receipt_info"`
+		PendingRenewalInfo       []PendingRenewalInfo `json:"pending_renewal_info"`
+		IsRetryable              bool                 `json:"is-retryable"`
 	}
 )

appstore/validator.go

@@ -50,17 +50,31 @@ func HandleError(status int) error {
 	case 21003:
 		message = "The receipt could not be authenticated."
 
+	case 21004:
+		message = "The shared secret you provided does not match the shared secret on file for your account."
+
 	case 21005:
 		message = "The receipt server is not currently available."
 
+	case 21006:
+		// Only returned for iOS 6 style transaction receipts for auto-renewable subscriptions.
+		message = "This receipt is valid but the subscription has expired. When this status code is returned to your server, the receipt data is also decoded and returned as part of the response."
+
 	case 21007:
 		message = "This receipt is from the test environment, but it was sent to the production environment for verification. Send it to the test environment instead."
 
 	case 21008:
 		message = "This receipt is from the production environment, but it was sent to the test environment for verification. Send it to the production environment instead."
 
+	case 21010:
+		message = "This receipt could not be authorized. Treat this the same as if a purchase was never made."
+
 	default:
-		message = "An unknown error occurred"
+		if status >= 21100 && status <= 21199 {
+			message = "Internal data access error."
+		} else {
+			message = "An unknown error occurred"
+		}
 	}
 
 	return errors.New(message)