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@@ -0,0 +1,98 @@
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+//
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+// InAppPurchaseObserver.swift
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+// SwiftyStoreKit
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+//
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+// Copyright (c) 2016 Andrea Bizzotto (bizz84@gmail.com)
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+//
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+// Permission is hereby granted, free of charge, to any person obtaining a copy
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+// of this software and associated documentation files (the "Software"), to deal
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+// in the Software without restriction, including without limitation the rights
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+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+// copies of the Software, and to permit persons to whom the Software is
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+// furnished to do so, subject to the following conditions:
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+//
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+// The above copyright notice and this permission notice shall be included in
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+// all copies or substantial portions of the Software.
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+//
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+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+// THE SOFTWARE.
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+
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+
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+import StoreKit
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+
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+extension PaymentTransactionState {
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+
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+ var stringValue: String {
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+ switch self {
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+ case Purchasing: return "Purchasing"
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+ case Purchased: return "Purchased"
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+ case Failed: return "Failed"
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+ case Restored: return "Restored"
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+ case Deferred: return "Deferred"
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+ }
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+ }
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+}
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+
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+class InAppCompleteTransactionsObserver: NSObject, SKPaymentTransactionObserver {
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+
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+ private var callbackCalled: Bool = false
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+
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+ typealias TransactionsCallback = (completedTransactions: [SwiftyStoreKit.CompletedTransaction]) -> ()
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+
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+ var paymentQueue: SKPaymentQueue {
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+ return SKPaymentQueue.defaultQueue()
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+ }
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+
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+ deinit {
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+ paymentQueue.removeTransactionObserver(self)
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+ }
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+
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+ let callback: TransactionsCallback
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+
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+ init(callback: TransactionsCallback) {
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+
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+ self.callback = callback
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+ super.init()
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+ paymentQueue.addTransactionObserver(self)
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+ }
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+
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+ func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
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+
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+ if callbackCalled {
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+ return
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+ }
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+ if SwiftyStoreKit.hasInFlightPayments {
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+ return
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+ }
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+
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+ var completedTransactions: [SwiftyStoreKit.CompletedTransaction] = []
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+
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+ for transaction in transactions {
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+
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+ #if os(iOS)
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+ let transactionState = transaction.transactionState
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+ #elseif os(OSX)
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+ let transactionState = PaymentTransactionState(rawValue: transaction.transactionState)!
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+ #endif
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+
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+ if transactionState != .Purchasing {
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+
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+ let completedTransaction = SwiftyStoreKit.CompletedTransaction(productId: transaction.payment.productIdentifier, transactionState: transactionState)
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+
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+ completedTransactions.append(completedTransaction)
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+
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+ print("Removing unregistered payment \"\(transaction.payment.productIdentifier)\", state: \(transactionState.stringValue)")
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+
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+ paymentQueue.finishTransaction(transaction)
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+ }
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+ }
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+ callbackCalled = true
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+
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+ callback(completedTransactions: completedTransactions)
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+ }
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+}
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Andrea Bizzotto