Merge pull request #526 from Olmrzklv/master

Add `getDistinctPurchaseIds` method

README.md

@@ -5,7 +5,7 @@
 [![Language](https://img.shields.io/badge/swift-5.0-orange.svg)](https://developer.apple.com/swift)
 [![Build](https://img.shields.io/travis/bizz84/SwiftyStoreKit.svg?style=flat)](https://travis-ci.org/bizz84/SwiftyStoreKit)
 [![Issues](https://img.shields.io/github/issues/bizz84/SwiftyStoreKit.svg?style=flat)](https://github.com/bizz84/SwiftyStoreKit/issues)
-[![Slack](https://img.shields.io/badge/Slack-Join-green.svg?style=flat)](https://join.slack.com/t/swiftystorekit/shared_invite/enQtNjkzNTg5NTMyMTgwLTcyZGIzMTg0MWFmMTQyMDYxNDcyYWNhOTlmNjUyM2E0OTllNjE2ZDJiNDI0ZDAzMWU2Mzc3Nzk1YzJmMTE2NjI)
+[![Slack](https://img.shields.io/badge/Slack-Join-green.svg?style=flat)](https://join.slack.com/t/swiftystorekit/shared_invite/enQtODY3OTYxOTExMzE5LWVkNGY4MzcwY2VjNGM4MGU4NDFhMGE5YmUxMGM3ZTQ4NjVjNTRkNTJhNDAyMWZmY2M5OWE5MDE0ODc3OGJjMmM)
 [![Cocoapod](http://img.shields.io/cocoapods/v/SwiftyStoreKit.svg?style=flat)](http://cocoadocs.org/docsets/SwiftyStoreKit/)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Accio supported](https://img.shields.io/badge/Accio-supported-0A7CF5.svg?style=flat)](https://github.com/JamitLabs/Accio)
@@ -19,12 +19,11 @@ SwiftyStoreKit is a lightweight In App Purchases framework for iOS 8.0+, tvOS 9.
 
 ### Join on Slack 
 
-SwiftyStoreKit is on Slack. [Join here](https://join.slack.com/t/swiftystorekit/shared_invite/enQtNjkzNTg5NTMyMTgwLTcyZGIzMTg0MWFmMTQyMDYxNDcyYWNhOTlmNjUyM2E0OTllNjE2ZDJiNDI0ZDAzMWU2Mzc3Nzk1YzJmMTE2NjI).
+SwiftyStoreKit is on Slack. [Join here](https://join.slack.com/t/swiftystorekit/shared_invite/enQtODY3OTYxOTExMzE5LWVkNGY4MzcwY2VjNGM4MGU4NDFhMGE5YmUxMGM3ZTQ4NjVjNTRkNTJhNDAyMWZmY2M5OWE5MDE0ODc3OGJjMmM).
 
 ### Maintainers Wanted
 
-- The author no longer maintaining this project actively. If you'd like to become a maintainer, [join the Slack workspace](https://join.slack.com/t/swiftystorekit/shared_invite/enQtNjkzNTg5NTMyMTgwLTcyZGIzMTg0MWFmMTQyMDYxNDcyYWNhOTlmNjUyM2E0OTllNjE2ZDJiNDI0ZDAzMWU2Mzc3Nzk1YzJmMTE2NjI
-) and enter the [#maintainers](https://app.slack.com/client/TL2JYQ458/CLG62K26A/details/) channel.
+- The author no longer maintaining this project actively. If you'd like to become a maintainer, [join the Slack workspace](https://join.slack.com/t/swiftystorekit/shared_invite/enQtODY3OTYxOTExMzE5LWVkNGY4MzcwY2VjNGM4MGU4NDFhMGE5YmUxMGM3ZTQ4NjVjNTRkNTJhNDAyMWZmY2M5OWE5MDE0ODc3OGJjMmM) and enter the [#maintainers](https://app.slack.com/client/TL2JYQ458/CLG62K26A/details/) channel.
 - Going forward, SwiftyStoreKit should be made for the community, by the community. 
 
 More info here:
@@ -36,6 +35,7 @@ More info here:
 - [Installation](#installation)
 	- [CocoaPods](#cocoapods)
 	- [Carthage](#carthage)
+	- [Swift Package Manager](#swift-package-manager)
 - [Features](#features)
 - [Contributing](#contributing)
 - [App startup](#app-startup)
@@ -55,6 +55,7 @@ More info here:
 	- [Verify Purchase](#verify-purchase)
 	- [Verify Subscription](#verify-subscription)
 	- [Subscription Groups](#subscription-groups)
+        - [Get distinct purchase identifiers](#get-distinct-purchase-identifiers)
 - [Notes](#notes)
 - [Change Log](#change-log)
 - [Sample Code](#sample-code)
@@ -637,6 +638,31 @@ SwiftyStoreKit.verifyReceipt(using: appleValidator) { result in
     }
 }
 ```
+#### Get distinct purchase identifiers 
+
+You can retrieve all product identifiers with the `getDistinctPurchaseIds` method:
+
+```swift
+let appleValidator = AppleReceiptValidator(service: .production, sharedSecret: "your-shared-secret")
+SwiftyStoreKit.verifyReceipt(using: appleValidator) { result in
+    switch result {
+    case .success(let receipt):
+        let productIds = SwiftyStoreKit.getDistinctPurchaseIds(inReceipt receipt: ReceiptInfo)
+        let purchaseResult = SwiftyStoreKit.verifySubscriptions(productIds: productIds, inReceipt: receipt)
+        switch purchaseResult {
+        case .purchased(let expiryDate, let items):
+            print("\(productIds) are valid until \(expiryDate)\n\(items)\n")
+        case .expired(let expiryDate, let items):
+            print("\(productIds) are expired since \(expiryDate)\n\(items)\n")
+        case .notPurchased:
+            print("The user has never purchased \(productIds)")
+        }
+    case .error(let error):
+        print("Receipt verification failed: \(error)")
+    }
+}
+```
+
 
 ## Notes
 The framework provides a simple block based API with robust error handling on top of the existing StoreKit framework. It does **NOT** persist in app purchases data locally. It is up to clients to do this with a storage solution of choice (i.e. NSUserDefaults, CoreData, Keychain).
@@ -695,7 +721,7 @@ I have also written about building SwiftyStoreKit on Medium:
 
 #### [@rebeloper](https://github.com/rebeloper): Ultimate In-app Purchases Guide
 
-<a href="https://www.youtube.com/watch?v=bIyj6BZ1-Qw&list=PL_csAAO9PQ8b9kqrltk2_SpYslTwyrwjb"><img src="https://raw.githubusercontent.com/bizz84/SwiftyStoreKit/master/Screenshots/VideoTutorial-Rebeloper.jpg" width="854" /></a>
+<a href="https://www.youtube.com/watch?v=MP-U5gQylHc"><img src="https://user-images.githubusercontent.com/2488011/65576278-55cccc80-df7a-11e9-8db5-244e2afa3e46.png" width="100%" /></a>
 
 ## Payment flows: implementation details
 In order to make a purchase, two operations are needed:
@@ -754,6 +780,7 @@ It would be great to showcase apps using SwiftyStoreKit here. Pull requests welc
 * [OB Monitor](https://itunes.apple.com/app/id1073398446) - The app for Texas Longhorns athletics fans
 * [Talk Dim Sum](https://itunes.apple.com/us/app/talk-dim-sum/id953929066) - Your dim sum companion
 * [Sluggard](https://itunes.apple.com/app/id1160131071) - Perform simple exercises to reduce the risks of sedentary lifestyle
+* [Debts iOS](https://debts.ivanvorobei.by/ios) & [Debts macOS](https://debts.ivanvorobei.by/macos) - Track amounts owed
 
 A full list of apps is published [on AppSight](https://www.appsight.io/sdk/574154).
 

SwiftyStoreKit/InAppReceipt.swift

@@ -168,6 +168,38 @@ internal class InAppReceipt {
             return .expired(expiryDate: firstExpiryDateItemPair.0, items: sortedReceiptItems)
         }
     }
+    
+    /**
+     *  Get the distinct product identifiers from receipt.
+     *
+     *  This Method extracts all product identifiers. (Including cancelled ones).
+     *  - Note: You can use this method to get all unique product identifiers from receipt.
+     *  - Parameter type: .autoRenewable or .nonRenewing.
+     *  - Parameter receipt: The receipt to use for looking up the product identifiers.
+     *  - return: Either Set<String> or nil.
+     */
+    class func getDistinctPurchaseIds(
+        ofType type: SubscriptionType,
+        inReceipt receipt: ReceiptInfo
+    ) -> Set<String>? {
+        
+        // Get receipts array from receipt
+        guard let receipts = getReceipts(for: type, inReceipt: receipt) else {
+            return nil
+        }
+        
+        #if swift(>=4.1)
+            let receiptIds = receipts.compactMap { ReceiptItem(receiptInfo: $0)?.productId }
+        #else
+            let receiptIds = receipts.flatMap { ReceiptItem(receiptInfo: $0)?.productId }
+        #endif
+        
+        if receiptIds.isEmpty {
+            return nil
+        }
+        
+        return Set(receiptIds)
+    }
 
     private class func expiryDatesAndItems(receiptItems: [ReceiptItem], duration: TimeInterval?) -> [(Date, ReceiptItem)] {
 
@@ -194,6 +226,15 @@ internal class InAppReceipt {
             #endif
         }
     }
+    
+    private class func getReceipts(for subscriptionType: SubscriptionType, inReceipt receipt: ReceiptInfo) -> [ReceiptInfo]? {
+        switch subscriptionType {
+        case .autoRenewable:
+            return receipt["latest_receipt_info"] as? [ReceiptInfo]
+        case .nonRenewing:
+            return getInAppReceipts(receipt: receipt)
+        }
+    }
 
     private class func getReceiptsAndDuration(for subscriptionType: SubscriptionType, inReceipt receipt: ReceiptInfo) -> ([ReceiptInfo]?, TimeInterval?) {
         switch subscriptionType {

SwiftyStoreKit/SwiftyStoreKit.swift

@@ -316,4 +316,18 @@ extension SwiftyStoreKit {
 
         return InAppReceipt.verifySubscriptions(ofType: type, productIds: productIds, inReceipt: receipt, validUntil: date)
     }
+    
+    /**
+     *  Get the distinct product identifiers from receipt.
+     *
+     *  This Method extracts all product identifiers. (Including cancelled ones).
+     *  - Note: You can use this method to get all unique product identifiers from receipt.
+     *  - Parameter type: .autoRenewable or .nonRenewing.
+     *  - Parameter receipt: The receipt to use for looking upproduct identifiers.
+     *  - return: Either Set<String> or nil.
+     */
+    public class func getDistinctPurchaseIds(ofType type: SubscriptionType = .autoRenewable, inReceipt receipt: ReceiptInfo) -> Set<String>? {
+        
+        return InAppReceipt.getDistinctPurchaseIds(ofType: type, inReceipt: receipt)
+    }
 }

SwiftyStoreKitTests/InAppReceiptTests.swift

@@ -382,6 +382,62 @@ class InAppReceiptTests: XCTestCase {
         let expectedSubscriptionResult = VerifySubscriptionResult.purchased(expiryDate: newerExpirationDate, items: [newerItem, olderItem])
         XCTAssertEqual(verifySubscriptionResult, expectedSubscriptionResult)
     }
+    
+    // MARK: Get Distinct Purchase Identifiers, empty receipt item tests
+    func testGetDistinctPurchaseIds_when_noReceipt_then_resultIsNil() {
+
+        let receiptRequestDate = makeDateAtMidnight(year: 2017, month: 5, day: 14)
+        let receipt = makeReceipt(items: [], requestDate: receiptRequestDate)
+
+        let getdistinctProductIdsResult = SwiftyStoreKit.getDistinctPurchaseIds(ofType: .autoRenewable, inReceipt: receipt)
+        XCTAssertNil(getdistinctProductIdsResult)
+    }
+    
+    // MARK: Get Distinct Purchase Identifiers, multiple receipt item tests
+    func testGetDistinctPurchaseIds_when_Receipt_then_resultIsNotNil() {
+
+        let receiptRequestDateOne = makeDateAtMidnight(year: 2020, month: 2, day: 20)
+        let purchaseDateOne = makeDateAtMidnight(year: 2020, month: 2, day: 1)
+        let purchaseDateTwo = makeDateAtMidnight(year: 2020, month: 1, day: 1)
+        
+        let productId1 = "product1"
+        let productId2 = "product2"
+        
+        let product1 = ReceiptItem(productId: productId1, purchaseDate: purchaseDateOne)
+        let product2 = ReceiptItem(productId: productId2, purchaseDate: purchaseDateTwo)
+        
+        let receipt = makeReceipt(items: [product1, product2], requestDate: receiptRequestDateOne)
+
+        let getdistinctProductIdsResult = SwiftyStoreKit.getDistinctPurchaseIds(ofType: .autoRenewable, inReceipt: receipt)
+                
+        XCTAssertNotNil(getdistinctProductIdsResult)
+    }
+    
+    // MARK: Get Distinct Purchase Identifiers, multiple non unique product identifiers tests
+    func testGetDistinctPurchaseIds_when_nonUniqueIdentifiers_then_resultIsUnique() {
+
+        let receiptRequestDateOne = makeDateAtMidnight(year: 2020, month: 2, day: 20)
+        let purchaseDateOne = makeDateAtMidnight(year: 2020, month: 2, day: 1)
+        let purchaseDateTwo = makeDateAtMidnight(year: 2020, month: 2, day: 2)
+        let purchaseDateThree = makeDateAtMidnight(year: 2020, month: 2, day: 3)
+        let purchaseDateFour = makeDateAtMidnight(year: 2020, month: 2, day: 4)
+
+        let productId1 = "product1"
+        let productId2 = "product2"
+        let productId3 = "product1"
+        let productId4 = "product2"
+
+        let product1 = ReceiptItem(productId: productId1, purchaseDate: purchaseDateOne)
+        let product2 = ReceiptItem(productId: productId2, purchaseDate: purchaseDateTwo)
+        let product3 = ReceiptItem(productId: productId3, purchaseDate: purchaseDateThree)
+        let product4 = ReceiptItem(productId: productId4, purchaseDate: purchaseDateFour)
+
+        let receipt = makeReceipt(items: [product1, product2, product3, product4], requestDate: receiptRequestDateOne)
+
+        let getdistinctProductIdsResult = SwiftyStoreKit.getDistinctPurchaseIds(ofType: .autoRenewable, inReceipt: receipt)
+        let expectedProductIdsResult = Set([productId1, productId2, productId3, productId4])
+        XCTAssertEqual(getdistinctProductIdsResult, expectedProductIdsResult)
+    }
 
     // MARK: Helper methods
     func makeReceipt(items: [ReceiptItem], requestDate: Date) -> [String: AnyObject] {