104 lines
3.7 KiB
Swift
104 lines
3.7 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import Foundation
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import ServiceLayer
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public final class RootViewModel: ObservableObject {
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@Published public private(set) var identification: Identification? {
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didSet {
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guard let identification = identification else { return }
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identification.service.updateLastUse()
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.sink { _ in } receiveValue: { _ in }
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.store(in: &cancellables)
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userNotificationService.isAuthorized()
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.filter { $0 }
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.zip(registerForRemoteNotifications())
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.filter { identification.identity.lastRegisteredDeviceToken != $1 }
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.map { ($1, identification.identity.pushSubscriptionAlerts) }
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.flatMap(identification.service.createPushSubscription(deviceToken:alerts:))
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.sink { _ in } receiveValue: { _ in }
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.store(in: &cancellables)
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}
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}
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@Published private var mostRecentlyUsedIdentityID: UUID?
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private let environment: AppEnvironment
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private let allIdentitiesService: AllIdentitiesService
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private let userNotificationService: UserNotificationService
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private let registerForRemoteNotifications: () -> AnyPublisher<Data, Error>
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private var cancellables = Set<AnyCancellable>()
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public init(environment: AppEnvironment,
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registerForRemoteNotifications: @escaping () -> AnyPublisher<Data, Error>) throws {
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self.environment = environment
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allIdentitiesService = try AllIdentitiesService(environment: environment)
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userNotificationService = UserNotificationService(environment: environment)
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self.registerForRemoteNotifications = registerForRemoteNotifications
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allIdentitiesService.immediateMostRecentlyUsedIdentityIDObservation()
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.replaceError(with: nil)
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.assign(to: &$mostRecentlyUsedIdentityID)
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identitySelected(id: mostRecentlyUsedIdentityID, immediate: true)
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userNotificationService.isAuthorized()
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.filter { $0 }
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.zip(registerForRemoteNotifications())
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.map { $1 }
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.flatMap(allIdentitiesService.updatePushSubscriptions(deviceToken:))
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.sink { _ in } receiveValue: { _ in }
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.store(in: &cancellables)
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}
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}
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public extension RootViewModel {
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func identitySelected(id: UUID?) {
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identitySelected(id: id, immediate: false)
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}
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func deleteIdentity(id: UUID) {
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allIdentitiesService.deleteIdentity(id: id)
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.sink { _ in } receiveValue: { _ in }
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.store(in: &cancellables)
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}
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func addIdentityViewModel() -> AddIdentityViewModel {
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AddIdentityViewModel(
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allIdentitiesService: allIdentitiesService,
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instanceFilterService: InstanceFilterService(environment: environment))
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}
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}
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private extension RootViewModel {
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func identitySelected(id: UUID?, immediate: Bool) {
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guard
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let id = id,
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let identityService = try? allIdentitiesService.identityService(id: id) else {
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identification = nil
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return
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}
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let observation = identityService.observation(immediate: immediate)
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.catch { [weak self] _ -> Empty<Identity, Never> in
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DispatchQueue.main.async {
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self?.identitySelected(id: self?.mostRecentlyUsedIdentityID, immediate: false)
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}
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return Empty()
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}
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.share()
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observation.map {
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Identification(
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identity: $0,
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observation: observation.eraseToAnyPublisher(),
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service: identityService)
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}
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.assign(to: &$identification)
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}
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}
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