From aef8f20a6f4a381899a6979657297a82fb3ee41e Mon Sep 17 00:00:00 2001
From: Frederik Riedel <frederik.riedel@frogg.io>
Date: Fri, 21 Sep 2018 13:33:19 +0200
Subject: [PATCH] Added new property "isInIntroOfferPeriod" to ReceiptItem
 according to documentation at
 https://developer.apple.com/library/archive/releasenotes/General/ValidateAppStoreReceipt/Chapters/ReceiptFields.html#//apple_ref/doc/uid/TP40010573-CH106-SW25

---
 SwiftyStoreKit/InAppReceipt.swift         | 5 +++++
 SwiftyStoreKit/SwiftyStoreKit+Types.swift | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/SwiftyStoreKit/InAppReceipt.swift b/SwiftyStoreKit/InAppReceipt.swift
index e86abbf6..0c763f17 100644
--- a/SwiftyStoreKit/InAppReceipt.swift
+++ b/SwiftyStoreKit/InAppReceipt.swift
@@ -64,6 +64,11 @@ extension ReceiptItem {
         } else {
             self.isTrialPeriod = false
         }
+        if let isInIntroOfferPeriod = receiptInfo["is_in_intro_offer_period"] as? String {
+            self.isInIntroOfferPeriod = Bool(isInIntroOfferPeriod) ?? false
+        } else {
+            self.isInIntroOfferPeriod = false
+        }
     }
 
     private static func parseDate(from receiptInfo: ReceiptInfo, key: String) -> Date? {
diff --git a/SwiftyStoreKit/SwiftyStoreKit+Types.swift b/SwiftyStoreKit/SwiftyStoreKit+Types.swift
index df349151..fdb70029 100644
--- a/SwiftyStoreKit/SwiftyStoreKit+Types.swift
+++ b/SwiftyStoreKit/SwiftyStoreKit+Types.swift
@@ -139,6 +139,8 @@ public struct ReceiptItem {
     public let cancellationDate: Date?
 
     public let isTrialPeriod: Bool
+    
+    public let isInIntroOfferPeriod: Bool
 }
 
 // Error when managing receipt