metatext/Shared/View Models/AddIdentityViewModel.swift

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// Copyright © 2020 Metabolist. All rights reserved.
import Foundation
import Combine
class AddIdentityViewModel: ObservableObject {
@Published var urlFieldText = ""
@Published var alertItem: AlertItem?
@Published private(set) var loading = false
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let addedIdentityID: AnyPublisher<UUID, Never>
private let identitiesService: IdentitiesService
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private let addedIdentityIDInput = PassthroughSubject<UUID, Never>()
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private var cancellables = Set<AnyCancellable>()
init(identitiesService: IdentitiesService) {
self.identitiesService = identitiesService
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addedIdentityID = addedIdentityIDInput.eraseToAnyPublisher()
}
func logInTapped() {
let identityID = UUID()
let instanceURL: URL
do {
try instanceURL = urlFieldText.url()
} catch {
alertItem = AlertItem(error: error)
return
}
identitiesService.authorizeIdentity(id: identityID, instanceURL: instanceURL)
.map { (identityID, instanceURL) }
.flatMap(identitiesService.createIdentity(id:instanceURL:))
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.map { identityID }
.assignErrorsToAlertItem(to: \.alertItem, on: self)
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.receive(on: RunLoop.main)
.handleEvents(
receiveSubscription: { [weak self] _ in self?.loading = true },
receiveCompletion: { [weak self] _ in self?.loading = false })
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.sink(receiveValue: addedIdentityIDInput.send)
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.store(in: &cancellables)
}
func browseAnonymouslyTapped() {
let identityID = UUID()
let instanceURL: URL
do {
try instanceURL = urlFieldText.url()
} catch {
alertItem = AlertItem(error: error)
return
}
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// TODO: Ensure instance has not disabled public preview
identitiesService.createIdentity(id: identityID, instanceURL: instanceURL)
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.map { identityID }
.assignErrorsToAlertItem(to: \.alertItem, on: self)
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.sink(receiveValue: addedIdentityIDInput.send)
.store(in: &cancellables)
}
}