110 lines
4.2 KiB
Swift
110 lines
4.2 KiB
Swift
//
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// PublisherService.swift
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//
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//
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// Created by MainasuK on 2021-12-2.
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//
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import os.log
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import UIKit
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import Combine
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public final class PublisherService {
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var disposeBag = Set<AnyCancellable>()
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let logger = Logger(subsystem: "PublisherService", category: "Service")
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// input
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let apiService: APIService
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@Published public private(set) var statusPublishers: [StatusPublisher] = []
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// output
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public let statusPublishResult = PassthroughSubject<Result<StatusPublishResult, Error>, Never>()
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var currentPublishProgressObservation: NSKeyValueObservation?
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@Published public var currentPublishProgress: Double = 0
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public init(
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apiService: APIService
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) {
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self.apiService = apiService
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$statusPublishers
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.receive(on: DispatchQueue.main)
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.sink { [weak self] publishers in
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guard let self = self else { return }
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guard let last = publishers.last else {
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self.currentPublishProgressObservation = nil
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return
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}
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self.currentPublishProgressObservation = last.progress
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.observe(\.fractionCompleted, options: [.initial, .new]) { [weak self] progress, _ in
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guard let self = self else { return }
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self.logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): publish progress \(progress.fractionCompleted)")
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self.currentPublishProgress = progress.fractionCompleted
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}
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}
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.store(in: &disposeBag)
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$statusPublishers
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.filter { $0.isEmpty }
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.delay(for: 1, scheduler: DispatchQueue.main)
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.sink { [weak self] _ in
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guard let self = self else { return }
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self.currentPublishProgress = 0
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}
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.store(in: &disposeBag)
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statusPublishResult
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.receive(on: DispatchQueue.main)
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.sink { result in
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switch result {
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case .success:
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break
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// TODO:
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// update store review count trigger
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// UserDefaults.shared.storeReviewInteractTriggerCount += 1
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case .failure:
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break
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}
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}
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.store(in: &disposeBag)
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}
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}
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extension PublisherService {
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@MainActor
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public func enqueue(statusPublisher publisher: StatusPublisher, authContext: AuthContext) {
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guard !statusPublishers.contains(where: { $0 === publisher }) else {
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assertionFailure()
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return
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}
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statusPublishers.append(publisher)
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Task {
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do {
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self.logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): publish status…")
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let result = try await publisher.publish(api: apiService, authContext: authContext)
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self.logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): publish status success")
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self.statusPublishResult.send(.success(result))
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self.statusPublishers.removeAll(where: { $0 === publisher })
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} catch is CancellationError {
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self.logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): publish cancelled")
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self.statusPublishers.removeAll(where: { $0 === publisher })
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} catch {
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self.logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): publish failure: \(error.localizedDescription)")
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self.statusPublishResult.send(.failure(error))
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self.currentPublishProgress = 0
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}
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}
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}
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}
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