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49 lines
1.8 KiB
Swift
49 lines
1.8 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import DB
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import Foundation
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import Mastodon
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import MastodonAPI
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public struct TimelineService {
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public let sections: AnyPublisher<[[CollectionItem]], Error>
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public let navigationService: NavigationService
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public let nextPageMaxIDs: AnyPublisher<String, Never>
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public let title: AnyPublisher<String, Never>
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public let contextParentID: String? = nil
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private let timeline: Timeline
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private let mastodonAPIClient: MastodonAPIClient
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private let contentDatabase: ContentDatabase
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private let nextPageMaxIDsSubject = PassthroughSubject<String, Never>()
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init(timeline: Timeline, mastodonAPIClient: MastodonAPIClient, contentDatabase: ContentDatabase) {
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self.timeline = timeline
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self.mastodonAPIClient = mastodonAPIClient
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self.contentDatabase = contentDatabase
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sections = contentDatabase.observation(timeline: timeline)
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navigationService = NavigationService(mastodonAPIClient: mastodonAPIClient, contentDatabase: contentDatabase)
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nextPageMaxIDs = nextPageMaxIDsSubject.eraseToAnyPublisher()
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if case let .tag(tag) = timeline {
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title = Just("#".appending(tag)).eraseToAnyPublisher()
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} else {
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title = Empty().eraseToAnyPublisher()
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}
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}
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}
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extension TimelineService: CollectionService {
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public func request(maxID: String?, minID: String?) -> AnyPublisher<Never, Error> {
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mastodonAPIClient.pagedRequest(timeline.endpoint, maxID: maxID, minID: minID)
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.handleEvents(receiveOutput: {
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guard let maxID = $0.info.maxID else { return }
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nextPageMaxIDsSubject.send(maxID)
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})
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.flatMap { contentDatabase.insert(statuses: $0.result, timeline: timeline) }
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.eraseToAnyPublisher()
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}
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}
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