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//
// RedeemVoucherInteractor.swift
// MullvadVPN
//
// Created by Mojgan on 2023-08-30.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import Foundation
import MullvadREST
import MullvadTypes
final class RedeemVoucherInteractor: @unchecked Sendable {
private let tunnelManager: TunnelManager
private let accountsProxy: RESTAccountHandling
private let shouldVerifyVoucherAsAccount: Bool
private var tasks: [Cancellable] = []
private var preferredAccountNumber: String?
var showLogoutDialog: (() -> Void)?
var didLogout: ((String) -> Void)?
init(
tunnelManager: TunnelManager,
accountsProxy: RESTAccountHandling,
verifyVoucherAsAccount: Bool
) {
self.tunnelManager = tunnelManager
self.accountsProxy = accountsProxy
self.shouldVerifyVoucherAsAccount = verifyVoucherAsAccount
}
func redeemVoucher(
code: String,
completion: @escaping (@Sendable (Result<REST.SubmitVoucherResponse, Error>) -> Void)
) {
tasks.append(
tunnelManager.redeemVoucher(code) { [weak self] result in
guard let self else { return }
completion(result)
guard shouldVerifyVoucherAsAccount,
result.error?.isInvalidVoucher ?? false
else {
return
}
verifyVoucherAsAccount(code: code)
})
}
func logout() async {
guard let accountNumber = preferredAccountNumber else { return }
await tunnelManager.unsetAccount()
didLogout?(accountNumber)
}
func cancelAll() {
tasks.forEach { $0.cancel() }
}
private func verifyVoucherAsAccount(code: String) {
let task = accountsProxy.getAccountData(
accountNumber: code,
retryStrategy: .noRetry
) { [weak self] result in
guard let self,
case .success = result
else {
return
}
showLogoutDialog?()
preferredAccountNumber = code
}
tasks.append(task)
}
}
fileprivate extension Error {
var isInvalidVoucher: Bool {
(self as? REST.Error)?.compareErrorCode(.invalidVoucher) ?? false
}
}
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