forked from zelo72/mastodon-ios
112 lines
4.0 KiB
Swift
112 lines
4.0 KiB
Swift
//
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// APIService+HomeTimeline.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021/2/3.
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//
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import Foundation
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import Combine
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import CoreData
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import CoreDataStack
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import CommonOSLog
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import DateToolsSwift
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import MastodonSDK
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extension APIService {
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func homeTimeline(
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sinceID: Mastodon.Entity.Status.ID? = nil,
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maxID: Mastodon.Entity.Status.ID? = nil,
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limit: Int = onceRequestStatusMaxCount,
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local: Bool? = nil,
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authenticationBox: MastodonAuthenticationBox
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) async throws -> Mastodon.Response.Content<[Mastodon.Entity.Status]> {
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let domain = authenticationBox.domain
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let authorization = authenticationBox.userAuthorization
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let query = Mastodon.API.Timeline.HomeTimelineQuery(
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maxID: maxID,
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sinceID: sinceID,
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minID: nil, // prefer sinceID
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limit: limit,
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local: local
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)
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let response = try await Mastodon.API.Timeline.home(
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session: session,
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domain: domain,
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query: query,
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authorization: authorization
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).singleOutput()
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let managedObjectContext = self.backgroundManagedObjectContext
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try await managedObjectContext.performChanges {
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guard let me = authenticationBox.authenticationRecord.object(in: managedObjectContext)?.user else {
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assertionFailure()
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return
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}
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// persist status
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var statuses: [Status] = []
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for entity in response.value {
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let result = Persistence.Status.createOrMerge(
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in: managedObjectContext,
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context: Persistence.Status.PersistContext(
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domain: domain,
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entity: entity,
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me: me,
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statusCache: nil, // TODO: add cache
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userCache: nil, // TODO: add cache
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networkDate: response.networkDate
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)
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)
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statuses.append(result.status)
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}
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// locate anchor status
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let anchorStatus: Status? = {
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guard let maxID = maxID else { return nil }
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let request = Status.sortedFetchRequest
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request.predicate = Status.predicate(domain: domain, id: maxID)
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request.fetchLimit = 1
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return try? managedObjectContext.fetch(request).first
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}()
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// update hasMore flag for anchor status
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let acct = Feed.Acct.mastodon(domain: authenticationBox.domain, userID: authenticationBox.userID)
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if let anchorStatus = anchorStatus,
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let feed = anchorStatus.feed(kind: .home, acct: acct) {
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feed.update(hasMore: false)
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}
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// persist Feed relationship
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let sortedStatuses = statuses.sorted(by: { $0.createdAt < $1.createdAt })
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let oldestStatus = sortedStatuses.first
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for status in sortedStatuses {
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let _feed = status.feed(kind: .home, acct: acct)
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if let feed = _feed {
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feed.update(updatedAt: response.networkDate)
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} else {
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let feedProperty = Feed.Property(
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acct: acct,
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kind: .home,
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hasMore: false,
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createdAt: status.createdAt,
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updatedAt: response.networkDate
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)
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let feed = Feed.insert(into: managedObjectContext, property: feedProperty)
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status.attach(feed: feed)
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// set hasMore on oldest status if is new feed
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if status === oldestStatus {
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feed.update(hasMore: true)
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}
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}
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}
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}
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return response
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}
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}
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