Call completion closure on completed request

Sources/SwiftyStoreKit/InAppProductQueryRequest.swift

@@ -31,13 +31,20 @@ public protocol InAppRequest: class {
     func cancel()
 }
 
-protocol InAppProductRequest: InAppRequest { }
+protocol InAppProductRequest: InAppRequest {
+    var hasCompleted: Bool { get }
+    var cachedResults: RetrieveResults? { get }
+}
 
 class InAppProductQueryRequest: NSObject, InAppProductRequest, SKProductsRequestDelegate {
 
     private let callback: InAppProductRequestCallback
     private let request: SKProductsRequest
 
+    private(set) var cachedResults: RetrieveResults?
+
+    var hasCompleted: Bool { cachedResults != nil }
+
     deinit {
         request.delegate = nil
     }
@@ -52,6 +59,7 @@ class InAppProductQueryRequest: NSObject, InAppProductRequest, SKProductsRequest
     func start() {
         request.start()
     }
+
     func cancel() {
         request.cancel()
     }
@@ -61,8 +69,12 @@ class InAppProductQueryRequest: NSObject, InAppProductRequest, SKProductsRequest
 
         let retrievedProducts = Set<SKProduct>(response.products)
         let invalidProductIDs = Set<String>(response.invalidProductIdentifiers)
-        performCallback(RetrieveResults(retrievedProducts: retrievedProducts,
-            invalidProductIDs: invalidProductIDs, error: nil))
+        let results = RetrieveResults(
+            retrievedProducts: retrievedProducts,
+            invalidProductIDs: invalidProductIDs, error: nil
+        )
+        self.cachedResults = results
+        performCallback(results)
     }
 
     func requestDidFinish(_ request: SKRequest) {

Sources/SwiftyStoreKit/ProductsInfoController.swift

@@ -69,9 +69,21 @@ class ProductsInfoController: NSObject {
             }
             inflightRequests[productIds] = InAppProductQuery(request: request, completionHandlers: [completion])
             request.start()
+
             return request
+
         } else {
+            
             inflightRequests[productIds]!.completionHandlers.append(completion)
+
+            let query = inflightRequests[productIds]!
+
+            if query.request.hasCompleted {
+                query.completionHandlers.forEach {
+                    $0(query.request.cachedResults!)
+                }
+            }
+
             return inflightRequests[productIds]!.request
         }
     }

SwiftyStoreKit.xcodeproj/project.pbxproj

@@ -200,7 +200,7 @@
 /* Begin PBXFileReference section */
 		2F2B8B2124A64CC000CEF088 /* SKProductDiscount+LocalizedPrice.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = "SKProductDiscount+LocalizedPrice.swift"; path = "Sources/SwiftyStoreKit/SKProductDiscount+LocalizedPrice.swift"; sourceTree = SOURCE_ROOT; };
 		2F2B8B2224A64CC000CEF088 /* AppleReceiptValidator.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AppleReceiptValidator.swift; path = Sources/SwiftyStoreKit/AppleReceiptValidator.swift; sourceTree = SOURCE_ROOT; };
-		2F2B8B2324A64CC000CEF088 /* InAppProductQueryRequest.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = InAppProductQueryRequest.swift; path = Sources/SwiftyStoreKit/InAppProductQueryRequest.swift; sourceTree = SOURCE_ROOT; };
+		2F2B8B2324A64CC000CEF088 /* InAppProductQueryRequest.swift */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 4; lastKnownFileType = sourcecode.swift; name = InAppProductQueryRequest.swift; path = Sources/SwiftyStoreKit/InAppProductQueryRequest.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2424A64CC000CEF088 /* InAppReceipt.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = InAppReceipt.swift; path = Sources/SwiftyStoreKit/InAppReceipt.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2524A64CC000CEF088 /* SwiftyStoreKit+Types.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = "SwiftyStoreKit+Types.swift"; path = "Sources/SwiftyStoreKit/SwiftyStoreKit+Types.swift"; sourceTree = SOURCE_ROOT; };
 		2F2B8B2624A64CC000CEF088 /* CompleteTransactionsController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = CompleteTransactionsController.swift; path = Sources/SwiftyStoreKit/CompleteTransactionsController.swift; sourceTree = SOURCE_ROOT; };
@@ -208,7 +208,7 @@
 		2F2B8B2824A64CC000CEF088 /* InAppReceiptRefreshRequest.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = InAppReceiptRefreshRequest.swift; path = Sources/SwiftyStoreKit/InAppReceiptRefreshRequest.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2924A64CC100CEF088 /* InAppReceiptVerificator.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = InAppReceiptVerificator.swift; path = Sources/SwiftyStoreKit/InAppReceiptVerificator.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2A24A64CC100CEF088 /* SKProduct+LocalizedPrice.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = "SKProduct+LocalizedPrice.swift"; path = "Sources/SwiftyStoreKit/SKProduct+LocalizedPrice.swift"; sourceTree = SOURCE_ROOT; };
-		2F2B8B2B24A64CC100CEF088 /* ProductsInfoController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = ProductsInfoController.swift; path = Sources/SwiftyStoreKit/ProductsInfoController.swift; sourceTree = SOURCE_ROOT; };
+		2F2B8B2B24A64CC100CEF088 /* ProductsInfoController.swift */ = {isa = PBXFileReference; fileEncoding = 4; indentWidth = 4; lastKnownFileType = sourcecode.swift; name = ProductsInfoController.swift; path = Sources/SwiftyStoreKit/ProductsInfoController.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2C24A64CC100CEF088 /* OS.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = OS.swift; path = Sources/SwiftyStoreKit/OS.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2D24A64CC100CEF088 /* PaymentsController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = PaymentsController.swift; path = Sources/SwiftyStoreKit/PaymentsController.swift; sourceTree = SOURCE_ROOT; };
 		2F2B8B2E24A64CC100CEF088 /* SwiftyStoreKit.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = SwiftyStoreKit.swift; path = Sources/SwiftyStoreKit/SwiftyStoreKit.swift; sourceTree = SOURCE_ROOT; };