mastodon-ios/Mastodon/Service/APIService/APIService+Reblog.swift

138 lines
5.6 KiB
Swift

//
// APIService+Reblog.swift
// Mastodon
//
// Created by MainasuK Cirno on 2021-3-9.
//
import Foundation
import Combine
import MastodonSDK
import CoreData
import CoreDataStack
import CommonOSLog
extension APIService {
// make local state change only
func reblog(
statusObjectID: NSManagedObjectID,
mastodonUserObjectID: NSManagedObjectID,
reblogKind: Mastodon.API.Reblog.ReblogKind
) -> AnyPublisher<Status.ID, Error> {
var _targetStatusID: Status.ID?
let managedObjectContext = backgroundManagedObjectContext
return managedObjectContext.performChanges {
let status = managedObjectContext.object(with: statusObjectID) as! Status
let mastodonUser = managedObjectContext.object(with: mastodonUserObjectID) as! MastodonUser
let targetStatus = status.reblog ?? status
let targetStatusID = targetStatus.id
_targetStatusID = targetStatusID
let reblogsCount: NSNumber
switch reblogKind {
case .reblog:
targetStatus.update(reblogged: true, by: mastodonUser)
reblogsCount = NSNumber(value: targetStatus.reblogsCount.intValue + 1)
case .undoReblog:
targetStatus.update(reblogged: false, by: mastodonUser)
reblogsCount = NSNumber(value: max(0, targetStatus.reblogsCount.intValue - 1))
}
targetStatus.update(reblogsCount: reblogsCount)
}
.tryMap { result in
switch result {
case .success:
guard let targetStatusID = _targetStatusID else {
throw APIError.implicit(.badRequest)
}
return targetStatusID
case .failure(let error):
assertionFailure(error.localizedDescription)
throw error
}
}
.eraseToAnyPublisher()
}
// send reblog request to remote
func reblog(
statusID: Mastodon.Entity.Status.ID,
reblogKind: Mastodon.API.Reblog.ReblogKind,
mastodonAuthenticationBox: AuthenticationService.MastodonAuthenticationBox
) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Status>, Error> {
let domain = mastodonAuthenticationBox.domain
let authorization = mastodonAuthenticationBox.userAuthorization
let requestMastodonUserID = mastodonAuthenticationBox.userID
return Mastodon.API.Reblog.reblog(
session: session,
domain: domain,
statusID: statusID,
reblogKind: reblogKind,
authorization: authorization
)
.map { response -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.Status>, Error> in
let log = OSLog.api
let entity = response.value
let managedObjectContext = self.backgroundManagedObjectContext
return managedObjectContext.performChanges {
guard let requestMastodonUser: MastodonUser = {
let request = MastodonUser.sortedFetchRequest
request.predicate = MastodonUser.predicate(domain: mastodonAuthenticationBox.domain, id: requestMastodonUserID)
request.fetchLimit = 1
request.returnsObjectsAsFaults = false
return managedObjectContext.safeFetch(request).first
}() else {
return
}
guard let oldStatus: Status = {
let request = Status.sortedFetchRequest
request.predicate = Status.predicate(domain: domain, id: statusID)
request.fetchLimit = 1
request.returnsObjectsAsFaults = false
request.relationshipKeyPathsForPrefetching = [#keyPath(Status.reblog)]
return managedObjectContext.safeFetch(request).first
}() else {
return
}
APIService.CoreData.merge(status: oldStatus, entity: entity.reblog ?? entity, requestMastodonUser: requestMastodonUser, domain: mastodonAuthenticationBox.domain, networkDate: response.networkDate)
switch reblogKind {
case .undoReblog:
oldStatus.update(reblogsCount: NSNumber(value: max(0, oldStatus.reblogsCount.intValue - 1)))
default:
break
}
os_log(.info, log: log, "%{public}s[%{public}ld], %{public}s: did update status %{public}s reblog status to: %{public}s. now %ld reblog", ((#file as NSString).lastPathComponent), #line, #function, entity.id, entity.reblogged.flatMap { $0 ? "reblog" : "unreblog" } ?? "<nil>", entity.reblogsCount )
}
.setFailureType(to: Error.self)
.tryMap { result -> Mastodon.Response.Content<Mastodon.Entity.Status> in
switch result {
case .success:
return response
case .failure(let error):
throw error
}
}
.eraseToAnyPublisher()
}
.switchToLatest()
.handleEvents(receiveCompletion: { completion in
switch completion {
case .failure(let error):
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: error:", ((#file as NSString).lastPathComponent), #line, #function)
debugPrint(error)
case .finished:
break
}
})
.eraseToAnyPublisher()
}
}