File size: 3,939 Bytes
4e1096a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | import StoreKit
import os
private let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "StoreKitManager")
class StoreKitManager: NSObject, SKProductsRequestDelegate, SKPaymentTransactionObserver {
static let shared = StoreKitManager()
private var productsRequest: SKProductsRequest?
private var productResponseHandler: (([SKProduct]) -> Void)?
private var purchaseHandler: ((Result<SKPaymentTransaction, Error>) -> Void)?
private var restoreHandler: (([SKPaymentTransaction]) -> Void)?
private override init() {
super.init()
}
func initialize() {
SKPaymentQueue.default().add(self)
}
deinit {
SKPaymentQueue.default().remove(self)
}
func fetchProducts(productIds: [String], completion: @escaping ([SKProduct]) -> Void) {
let ids = Set(productIds)
productsRequest = SKProductsRequest(productIdentifiers: ids)
productsRequest?.delegate = self
productResponseHandler = completion
productsRequest?.start()
}
func purchase(
product: SKProduct, completion: @escaping (Result<SKPaymentTransaction, Error>) -> Void
) {
guard SKPaymentQueue.canMakePayments() else {
completion(
.failure(
NSError(
domain: "iap", code: 0, userInfo: [NSLocalizedDescriptionKey: "Purchases disabled."])))
return
}
purchaseHandler = completion
let payment = SKPayment(product: product)
SKPaymentQueue.default().add(payment)
}
func restorePurchases(completion: @escaping ([SKPaymentTransaction]) -> Void) {
restoreHandler = completion
SKPaymentQueue.default().restoreCompletedTransactions()
}
// MARK: - SKProductsRequestDelegate
func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {
DispatchQueue.main.async { [weak self] in
self?.productResponseHandler?(response.products)
self?.productResponseHandler = nil
}
}
func request(_ request: SKRequest, didFailWithError error: Error) {
DispatchQueue.main.async { [weak self] in
logger.error("Products request failed: \(error.localizedDescription)")
self?.productResponseHandler?([])
self?.productResponseHandler = nil
}
}
// MARK: - SKPaymentTransactionObserver
func paymentQueue(
_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]
) {
for transaction in transactions {
switch transaction.transactionState {
case .purchased:
SKPaymentQueue.default().finishTransaction(transaction)
DispatchQueue.main.async { [weak self] in
self?.purchaseHandler?(.success(transaction))
self?.purchaseHandler = nil
}
case .failed:
SKPaymentQueue.default().finishTransaction(transaction)
let error =
transaction.error
?? NSError(
domain: "iap", code: -1, userInfo: [NSLocalizedDescriptionKey: "Unknown purchase error"]
)
DispatchQueue.main.async { [weak self] in
self?.purchaseHandler?(.failure(error))
self?.purchaseHandler = nil
}
case .restored:
SKPaymentQueue.default().finishTransaction(transaction)
case .deferred, .purchasing:
// Handle these states if needed
break
@unknown default:
break
}
}
}
func paymentQueueRestoreCompletedTransactionsFinished(_ queue: SKPaymentQueue) {
let restored = queue.transactions.filter { $0.transactionState == .restored }
DispatchQueue.main.async { [weak self] in
self?.restoreHandler?(restored)
self?.restoreHandler = nil
}
}
func paymentQueue(
_ queue: SKPaymentQueue, restoreCompletedTransactionsFailedWithError error: Error
) {
DispatchQueue.main.async { [weak self] in
logger.error("Restore purchases failed: \(error.localizedDescription)")
self?.restoreHandler?([])
self?.restoreHandler = nil
}
}
}
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