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78 lines
2.8 KiB
Swift
78 lines
2.8 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 Mastodon
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import ServiceLayer
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public class AccountStatusesViewModel: StatusListViewModel {
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@Published public private(set) var accountViewModel: AccountViewModel?
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@Published public var collection = AccountStatusCollection.statuses
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private let accountStatusesService: AccountStatusesService
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private var cancellables = Set<AnyCancellable>()
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init(accountStatusesService: AccountStatusesService) {
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self.accountStatusesService = accountStatusesService
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let collectionSubject = CurrentValueSubject<AccountStatusCollection, Never>(.statuses)
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super.init(
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statusListService: accountStatusesService.statusListService(
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collectionPublisher: collectionSubject))
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$collection.sink(receiveValue: collectionSubject.send).store(in: &cancellables)
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accountStatusesService.accountService
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.map(AccountViewModel.init(accountService:))
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.assignErrorsToAlertItem(to: \.alertItem, on: self)
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.assign(to: &$accountViewModel)
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}
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public override var collectionItems: AnyPublisher<[[CollectionItem]], Never> {
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// The pinned key is added to the info of collection items in the first section
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// so a diffable data source can potentially render it in both sections
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super.collectionItems
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.map {
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$0.enumerated().map {
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$0 == 0 ? $1.map { .init(id: $0.id, kind: $0.kind, info: [.pinned: true]) } : $1
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}
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}
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.eraseToAnyPublisher()
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}
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public override var navigationEvents: AnyPublisher<NavigationEvent, Never> {
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$accountViewModel.compactMap { $0 }
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.flatMap(\.events)
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.flatMap { $0 }
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.map(NavigationEvent.init)
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.compactMap { $0 }
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.assignErrorsToAlertItem(to: \.alertItem, on: self)
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.merge(with: super.navigationEvents)
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.eraseToAnyPublisher()
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}
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public override func request(maxID: String? = nil, minID: String? = nil) {
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if case .statuses = collection, maxID == nil {
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accountStatusesService.fetchPinnedStatuses()
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.assignErrorsToAlertItem(to: \.alertItem, on: self)
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.sink { _ in }
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.store(in: &cancellables)
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}
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super.request(maxID: maxID, minID: minID)
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}
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public override var title: AnyPublisher<String?, Never> {
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$accountViewModel.map { $0?.accountName }.eraseToAnyPublisher()
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}
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}
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public extension AccountStatusesViewModel {
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func fetchAccount() {
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accountStatusesService.fetchAccount()
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.assignErrorsToAlertItem(to: \.alertItem, on: self)
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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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