79 lines
2.5 KiB
Swift
79 lines
2.5 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Foundation
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import Combine
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import Mastodon
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class EditFilterViewModel: ObservableObject {
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@Published var filter: Filter
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@Published var saving = false
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@Published var alertItem: AlertItem?
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let saveCompleted: AnyPublisher<Void, Never>
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var date: Date {
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didSet { filter.expiresAt = date }
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}
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private let identityService: IdentityService
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private let saveCompletedInput = PassthroughSubject<Void, Never>()
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private var cancellables = Set<AnyCancellable>()
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init(filter: Filter, identityService: IdentityService) {
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self.filter = filter
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self.identityService = identityService
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date = filter.expiresAt ?? Date()
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saveCompleted = saveCompletedInput.eraseToAnyPublisher()
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}
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}
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extension EditFilterViewModel {
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var isNew: Bool { filter.id == Filter.newFilterID }
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var isSaveDisabled: Bool { filter.phrase == "" || filter.context.isEmpty }
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func toggleSelection(context: Filter.Context) {
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if filter.context.contains(context) {
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filter.context.removeAll { $0 == context }
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} else {
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filter.context.append(context)
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}
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}
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func save() {
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(isNew ? identityService.createFilter(filter) : identityService.updateFilter(filter))
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.assignErrorsToAlertItem(to: \.alertItem, on: self)
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.handleEvents(
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receiveSubscription: { [weak self] _ in self?.saving = true },
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receiveCompletion: { [weak self] in
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guard let self = self else { return }
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self.saving = false
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if case .finished = $0 {
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self.saveCompletedInput.send(())
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}
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})
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.sink { _ in }
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.store(in: &cancellables)
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}
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}
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extension Filter.Context {
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var localized: String {
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switch self {
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case .home:
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return NSLocalizedString("filter.context.home", comment: "")
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case .notifications:
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return NSLocalizedString("filter.context.notifications", comment: "")
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case .public:
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return NSLocalizedString("filter.context.public", comment: "")
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case .thread:
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return NSLocalizedString("filter.context.thread", comment: "")
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case .account:
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return NSLocalizedString("filter.context.account", comment: "")
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case .unknown:
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return NSLocalizedString("filter.context.unknown", comment: "")
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}
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}
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}
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