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//
//  ViewController.m
//  AVPlayerCaching
//
//  Created by Anurag Mishra on 5/19/14.
//  Sample code to demonstrate how to cache a remote audio file while streaming it with AVPlayer
//

#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>

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{
  "vk_playback": 1,
}

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@available(iOS 13.0, OSX 10.15, tvOS 13.0, watchOS 6.0, *)
@_functionBuilder public struct ViewBuilder {

    /// Builds an empty view from an block containing no statements, `{ }`.
    public static func buildBlock() -> EmptyView

    /// Passes a single view written as a child view (e..g, `{ Text("Hello") }`) through
    /// unmodified.
    public static func buildBlock<Content>(_ content: Content) -> Content where Content : View
}

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var body: some View {
     VStack{
        Text("World Time").font(.system(size: 30))
        Text("Yet another subtitle").font(.system(size: 20))
     }
}

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extension IAPManager: SKPaymentTransactionObserver {
    
    public func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
        for transaction in transactions {
            switch (transaction.transactionState) {
            case .purchased:
                SKPaymentQueue.default().finishTransaction(transaction)
                notifyIsPurchased(transaction: transaction)
                break
            case .failed:

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func refreshSubscriptionsStatus(callback : @escaping SuccessBlock, failure : @escaping FailureBlock){
        // save blocks for further use
        self.refreshSubscriptionSuccessBlock = callback
        self.refreshSubscriptionFailureBlock = failure
        guard let receiptUrl = Bundle.main.appStoreReceiptURL else {
                refreshReceipt()
                // do not call block yet
                return
        }
        #if DEBUG

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private func refreshReceipt(){
    let request = SKReceiptRefreshRequest(receiptProperties: nil)
    request.delegate = self
    request.start()
}

func requestDidFinish(_ request: SKRequest) {
  // call refresh subscriptions method again with same blocks
    if request is SKReceiptRefreshRequest {
        refreshSubscriptionsStatus(callback: self.successBlock ?? {}, failure: self.failureBlock ?? {_ in})

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private func parseReceipt(_ json : Dictionary<String, Any>) {
        // It's the most simple way to get latest expiration date. Consider this code as for learning purposes. Do not use current code in production apps.
        guard let receipts_array = json["latest_receipt_info"] as? [Dictionary<String, Any>] else {
            self.refreshSubscriptionFailureBlock?(nil)
            self.cleanUpRefeshReceiptBlocks()
            return
        }
        for receipt in receipts_array {
            let productID = receipt["product_id"] as! String 
            let formatter = DateFormatter()

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// Starts products loading and sets transaction observer delegate
    @objc func startWith(arrayOfIds : Set<String>!, sharedSecret : String){
        SKPaymentQueue.default().add(self)
        self.sharedSecret = sharedSecret
        self.productIds = arrayOfIds
        loadProducts()
    }
    
    private func loadProducts(){
        let request = SKProductsRequest.init(productIdentifiers: productIds)

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func purchaseProduct(product : SKProduct, success: @escaping SuccessBlock, failure: @escaping FailureBlock){
        guard SKPaymentQueue.canMakePayments() else {
            return
        }
        guard SKPaymentQueue.default().transactions.last?.transactionState != .purchasing else {
            return
        }
        
        self.successBlock = success
        self.failureBlock = failure