//

// Receipt.swift

// Telephone

//

// Copyright © 2008-2016 Alexey Kuznetsov

// Copyright © 2016-2022 64 Characters

//

// Telephone is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Telephone is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU General Public License for more details.

//

import Foundation

public protocol Receipt {

func validate(completion: @escaping (ReceiptValidationResult) -> Void)

}

public enum ReceiptValidationResult {

case receiptIsValid(expiration: Date)

case receiptIsInvalid

case noActivePurchases

public var localizedDescription: String {

switch self {

case .receiptIsValid:

return NSLocalizedString("Receipt is valid.", bundle: bundle(), comment: "Receipt validation success.")

case .receiptIsInvalid:

return NSLocalizedString("Receipt is invalid.", bundle: bundle(), comment: "Receipt validation error.")

case .noActivePurchases:

return NSLocalizedString(

"Receipt doesn’t contain active purchases.", bundle: bundle(), comment: "No active purchase error."

)

}

}

}

private func bundle() -> Bundle {

return Bundle(identifier: "com.tlphn.Telephone.UseCases")!

}