68 lines
1.9 KiB
Swift
68 lines
1.9 KiB
Swift
//
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// UpdateWalletStateService.swift
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// Malinka
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//
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// Created by Juraldinio on 11/14/22.
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// Copyright © 2022 NUT.Tech. All rights reserved.
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//
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import Foundation
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import Combine
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import WalletKit
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final class UpdateWalletStateService {
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// MARK: - Constants
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private enum Constants {
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static let timerInterval = 3
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static let maximumRefreshCount = 5
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}
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// MARK: - Properties
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private let status: CurrentValueSubject<WalletKit.Wallet, Never>
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private var timerPublisher: DispatchTimer?
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private var refreshStatus: AnyCancellable?
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var statusPublisher: AnyPublisher<WalletKit.Wallet, Never> { self.status.eraseToAnyPublisher() }
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// MARK: - Init
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init(bank: Bank, wallet: WalletKit.Wallet) {
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self.status = CurrentValueSubject<WalletKit.Wallet, Never>(wallet)
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let publisher = Publishers.timer(queue: DispatchQueue.global(qos: .background),
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interval: .seconds(Constants.timerInterval),
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times: .max(Constants.maximumRefreshCount))
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self.timerPublisher = publisher
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self.refreshStatus = publisher.sink(receiveCompletion: { [weak self] _ in
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self?.status.send(wallet)
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self?.status.send(completion: .finished)
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}, receiveValue: { [weak self] _ in
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self?.updateState(for: wallet, in: bank)
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})
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}
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// MARK: - Private
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private func updateState(for wallet: WalletKit.Wallet, in bank: Bank) {
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Task {
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try await bank.refreshStatus(wallet: wallet)
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}
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self.status.send(wallet)
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guard wallet.isOnCreationState else {
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self.refreshStatus?.cancel()
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self.refreshStatus = nil
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self.status.send(completion: .finished)
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return
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}
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}
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}
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