//
//  PKPaymentToken+SerializableTests.swift
//  PSCB-OOS-iOSTests
//
//  Created by Antonov Ilia on 22.10.2020.
//
#if canImport(PassKit)

import Foundation
import PassKit
import XCTest

@testable import PSCBOnline

final class PKPaymentTokenSerializableTests: XCTestCase {
    
    // MARK: - Test .serializeToJSON()
    func testPaymentTokenSerialization() {
        // given:
        let token = MockPaymentToken.createToken()
        
        // when:
        let json = token.serializeToJSON()
        
        print("JSON: >>")
        print(json)
        
        // then:
        XCTAssertEqual(json["transactionIdentifier"], "2C7B4FD8-7D1B-49D4-8AB5-AFE3CC79265A")
        
        // and:
        let method = json["paymentMethod"]
        let network = (method as! [String: AnyHashable])["network"] ?? "N/A" as AnyHashable
        XCTAssertEqual(network, "Visa" as AnyHashable)
    }
    
    // MARK: - Test .serializeToData()
    func testSerializeToData() {
        // given:
        let token = MockPaymentToken.createToken()
        
        // expect:
        XCTAssertNoThrow(try token.serializeToData())
    }
    
    // MARK: - Test .serializeToString()
    func testSerializeToString() {
        // given:
        let token = MockPaymentToken.createToken()
        
        // expect:
        XCTAssertNoThrow(try token.serializeToString())
        
        // when:
        let json = try! token.serializeToString()
        
        // debug:
        print("JSON: >>")
        print(json)
    }
    
    // MARK: - Test PKPaymentToken.toCryptogramString()
    func testToCryptogramString() {
        // given:
        let token = MockPaymentToken.createToken()
        
        // expect:
        XCTAssertNoThrow(try token.toCryptogramString())
        
        // when:
        let string = try! token.toCryptogramString()
        
        // debug:
        print("Cryptogram String: >> \(string)")
        
        // then:
        XCTAssertFalse(string.isEmpty)
        
        // when:
        let data = Data(base64Encoded: string, options: Data.Base64DecodingOptions(rawValue: 0))!
        
        // debug:
        print("Decoded >>")
        print(String(data: data, encoding: .utf8)!)
        
        // and:
        let decoder = JSONDecoder()
        let output  = try! decoder.decode(PaymentTokenResult.self, from: data)
        
        // then:
        XCTAssertEqual(output.version, "EC_v1")
        XCTAssertEqual(output.signature, "....")
    }
    
}

internal struct PaymentTokenResult: Decodable {
    let data: String
    let version: String
    let signature: String
}

internal struct PaymentMethodResult: Decodable {
    let displayName: String
    let network: String
    let type: String
}

#endif