//
//  DYFStoreTransaction.swift
//
//  Created by dyf on 2016/11/28. ( https://github.com/dgynfi/DYFStore )
//  Copyright © 2016 dyf. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//

import Foundation


open class DYFStoreTransaction: NSObject, NSCoding {
    
    /// The state of this transaction. 0: purchased, 1: restored.
    @objc open var state: UInt8 = 0
    
    /// A string used to identify a product that can be purchased from within your app.
    @objc open var productIdentifier: String?
    
    /// An opaque identifier for the user’s account on your system.
    @objc open var userIdentifier: String?
    
    /// When a transaction is restored, the current transaction holds a new transaction timestamp. Your app will read this property to retrieve the restored transaction timestamp.
    @objc open var originalTransactionTimestamp: String?
    
    /// When a transaction is restored, the current transaction holds a new transaction identifier. Your app will read this property to retrieve the restored transaction identifier.
    @objc open var originalTransactionIdentifier: String?
    
    /// The timestamp when the transaction was added to the server queue. Only valid if state is purchased or restored.
    @objc open var transactionTimestamp: String?
    
    /// The unique server-provided identifier. Only valid if state is purchased or restored.
    @objc open var transactionIdentifier: String?
    
    /// A base64 signed receipt that records all information about a successful payment transaction.
    ///
    /// The contents of this property are undefined except when transactionState is set to purchased.
    /// The receipt is a signed chunk of data that can be sent to the App Store to verify that the payment was successfully processed. This is most useful when designing a store that uses a server separate from the iPhone to verify that payment was processed. For more information on verifying receipts, see [Receipt Validation Programming Guide](https://developer.apple.com/library/archive/releasenotes/General/ValidateAppStoreReceipt/Introduction.html#//apple_ref/doc/uid/TP40010573).
    @objc open var transactionReceipt: String?
    
    /// Instantiates a DYFStoreTransaction object.
    public override init() {
        super.init()
    }
    
    /// The Secure Coding Guide should be consulted when writing methods that decode data.
    //public static var supportsSecureCoding: Bool {
    //    return true
    //}
    
    /// Returns an object initialized from data in a given unarchiver.
    ///
    /// - Parameter aDecoder: An unarchiver object.
    public required convenience init?(coder aDecoder: NSCoder) {
        self.init()
        DYFSwiftRuntimeProvider.decode(aDecoder, forObject: self)
    }
    
    /// Encodes the receiver using a given archiver.
    ///
    /// - Parameter aCoder: An archiver object.
    public func encode(with aCoder: NSCoder) {
        DYFSwiftRuntimeProvider.encode(aCoder, forObject: self)
    }
}

/// Used to represent the state of a transaction.
@objc public enum DYFStoreTransactionState: UInt8 {
    
    /// Indicates that the transaction has been purchased.
    case purchased
    
    /// Indicates that the transaction has been restored.
    case restored
}

/// The key UserDefaults and Keychain used.
public let DYFStoreTransactionsKey = "DYFStoreTransactions"