metatext-app-ios-iphone-ipad/ServiceLayer/Sources/ServiceLayer/Services/NotificationsService.swift

71 lines
2.9 KiB
Swift

// Copyright © 2020 Metabolist. All rights reserved.
import Combine
import DB
import Foundation
import Mastodon
import MastodonAPI
public struct NotificationsService {
public let sections: AnyPublisher<[CollectionSection], Error>
public let nextPageMaxId: AnyPublisher<String, Never>
public let navigationService: NavigationService
private let excludeTypes: Set<MastodonNotification.NotificationType>
private let mastodonAPIClient: MastodonAPIClient
private let contentDatabase: ContentDatabase
private let nextPageMaxIdSubject: CurrentValueSubject<String, Never>
init(excludeTypes: Set<MastodonNotification.NotificationType>,
mastodonAPIClient: MastodonAPIClient,
contentDatabase: ContentDatabase) {
self.excludeTypes = excludeTypes
self.mastodonAPIClient = mastodonAPIClient
self.contentDatabase = contentDatabase
let nextPageMaxIdSubject = CurrentValueSubject<String, Never>(String(Int.max))
self.nextPageMaxIdSubject = nextPageMaxIdSubject
sections = contentDatabase.notificationsPublisher(excludeTypes: excludeTypes)
.handleEvents(receiveOutput: {
guard case let .notification(notification, _) = $0.last?.items.last,
notification.id < nextPageMaxIdSubject.value
else { return }
nextPageMaxIdSubject.send(notification.id)
})
.eraseToAnyPublisher()
nextPageMaxId = nextPageMaxIdSubject.eraseToAnyPublisher()
navigationService = NavigationService(mastodonAPIClient: mastodonAPIClient, contentDatabase: contentDatabase)
}
}
extension NotificationsService: CollectionService {
public var markerTimeline: Marker.Timeline? { excludeTypes.isEmpty ? .notifications : nil }
public func request(maxId: String?, minId: String?, search: Search?) -> AnyPublisher<Never, Error> {
mastodonAPIClient.pagedRequest(NotificationsEndpoint.notifications(excludeTypes: excludeTypes),
maxId: maxId,
minId: minId)
.handleEvents(receiveOutput: {
guard let maxId = $0.info.maxId, maxId < nextPageMaxIdSubject.value else { return }
nextPageMaxIdSubject.send(maxId)
})
.flatMap { contentDatabase.insert(notifications: $0.result) }
.eraseToAnyPublisher()
}
public func requestMarkerLastReadId() -> AnyPublisher<CollectionItem.Id, Error> {
mastodonAPIClient.request(MarkersEndpoint.get([.notifications]))
.compactMap { $0.values.first?.lastReadId }
.eraseToAnyPublisher()
}
public func setMarkerLastReadId(_ id: CollectionItem.Id) -> AnyPublisher<CollectionItem.Id, Error> {
mastodonAPIClient.request(MarkersEndpoint.post([.notifications: id]))
.compactMap { $0.values.first?.lastReadId }
.eraseToAnyPublisher()
}
}