95 lines
4.4 KiB
Swift
95 lines
4.4 KiB
Swift
//
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// NotificationViewModel+Diffable.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/4/13.
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//
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import CoreData
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import CoreDataStack
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import os.log
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import UIKit
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import MastodonSDK
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//extension NotificationViewModel: NSFetchedResultsControllerDelegate {
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// func controllerWillChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
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// os_log("%{public}s[%{public}ld], %{public}s", (#file as NSString).lastPathComponent, #line, #function)
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// }
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//
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// func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, didChangeContentWith snapshot: NSDiffableDataSourceSnapshotReference) {
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// os_log("%{public}s[%{public}ld], %{public}s", (#file as NSString).lastPathComponent, #line, #function)
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//
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// guard let tableView = self.tableView else { return }
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// guard let navigationBar = contentOffsetAdjustableTimelineViewControllerDelegate?.navigationBar() else { return }
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//
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// guard let diffableDataSource = self.diffableDataSource else { return }
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//
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// let predicate: NSPredicate = {
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// let notificationTypePredicate = MastodonNotification.predicate(
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// validTypesRaws: Mastodon.Entity.Notification.NotificationType.knownCases.map { $0.rawValue }
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// )
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// return fetchedResultsController.fetchRequest.predicate.flatMap {
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// NSCompoundPredicate(andPredicateWithSubpredicates: [$0, notificationTypePredicate])
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// } ?? notificationTypePredicate
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// }()
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// let parentManagedObjectContext = fetchedResultsController.managedObjectContext
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// let managedObjectContext = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
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// managedObjectContext.parent = parentManagedObjectContext
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//
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// managedObjectContext.perform {
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// let notifications: [MastodonNotification] = {
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// let request = MastodonNotification.sortedFetchRequest
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// request.returnsObjectsAsFaults = false
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// request.predicate = predicate
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// do {
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// return try managedObjectContext.fetch(request)
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// } catch {
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// assertionFailure(error.localizedDescription)
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// return []
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// }
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// }()
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//
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// DispatchQueue.main.async {
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// let oldSnapshot = diffableDataSource.snapshot()
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// var oldSnapshotAttributeDict: [NSManagedObjectID : Item.StatusAttribute] = [:]
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// for item in oldSnapshot.itemIdentifiers {
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// guard case let .notification(objectID, attribute) = item else { continue }
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// oldSnapshotAttributeDict[objectID] = attribute
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// }
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// var newSnapshot = NSDiffableDataSourceSnapshot<NotificationSection, NotificationItem>()
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// newSnapshot.appendSections([.main])
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//
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// let segment = self.selectedIndex.value
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// switch segment {
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// case .everyThing:
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// let items: [NotificationItem] = notifications.map { notification in
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// let attribute: Item.StatusAttribute = oldSnapshotAttributeDict[notification.objectID] ?? Item.StatusAttribute()
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// return NotificationItem.notification(objectID: notification.objectID, attribute: attribute)
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// }
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// newSnapshot.appendItems(items, toSection: .main)
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// case .mentions:
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// let items: [NotificationItem] = notifications.map { notification in
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// let attribute: Item.StatusAttribute = oldSnapshotAttributeDict[notification.objectID] ?? Item.StatusAttribute()
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// return NotificationItem.notificationStatus(objectID: notification.objectID, attribute: attribute)
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// }
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// newSnapshot.appendItems(items, toSection: .main)
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// }
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//
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// if !notifications.isEmpty, self.noMoreNotification.value == false {
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// newSnapshot.appendItems([.bottomLoader], toSection: .main)
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// }
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//
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// self.isFetchingLatestNotification.value = false
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//
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// diffableDataSource.apply(newSnapshot, animatingDifferences: false) { [weak self] in
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// guard let self = self else { return }
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// self.dataSourceDidUpdated.send()
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// }
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// }
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// }
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// }
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//
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//}
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