68 lines
2.4 KiB
Swift
68 lines
2.4 KiB
Swift
//
|
|
// PersistentContainer.swift
|
|
// Reader
|
|
//
|
|
// Created by Shadowfacts on 12/24/21.
|
|
//
|
|
|
|
import CoreData
|
|
import Fervor
|
|
|
|
class PersistentContainer: NSPersistentContainer {
|
|
|
|
private static let managedObjectModel: NSManagedObjectModel = {
|
|
let url = Bundle.main.url(forResource: "Reader", withExtension: "momd")!
|
|
return NSManagedObjectModel(contentsOf: url)!
|
|
}()
|
|
|
|
private(set) lazy var backgroundContext: NSManagedObjectContext = {
|
|
let context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
|
|
// todo: should the background context really be parented to the view context, or should they both be direct children of the PSC?
|
|
context.parent = self.viewContext
|
|
return context
|
|
}()
|
|
|
|
init(account: LocalData.Account) {
|
|
super.init(name: "\(account.id)", managedObjectModel: PersistentContainer.managedObjectModel)
|
|
|
|
loadPersistentStores { description, error in
|
|
if let error = error {
|
|
fatalError("Unable to load persistent store: \(error)")
|
|
}
|
|
}
|
|
}
|
|
|
|
func sync(serverGroups: [Fervor.Group], serverFeeds: [Fervor.Feed]) async throws {
|
|
try await backgroundContext.perform {
|
|
let existingGroups = try self.backgroundContext.fetch(Group.fetchRequest())
|
|
for group in serverGroups {
|
|
if let existing = existingGroups.first(where: { $0.id == group.id }) {
|
|
existing.updateFromServer(group)
|
|
} else {
|
|
let mo = Group(context: self.backgroundContext)
|
|
mo.updateFromServer(group)
|
|
}
|
|
}
|
|
for removed in existingGroups where !serverGroups.contains(where: { $0.id == removed.id }) {
|
|
self.backgroundContext.delete(removed)
|
|
}
|
|
|
|
let existingFeeds = try self.backgroundContext.fetch(Feed.fetchRequest())
|
|
for feed in serverFeeds {
|
|
if let existing = existingFeeds.first(where: { $0.id == feed.id }) {
|
|
existing.updateFromServer(feed)
|
|
} else {
|
|
let mo = Feed(context: self.backgroundContext)
|
|
mo.updateFromServer(feed)
|
|
}
|
|
}
|
|
|
|
if self.backgroundContext.hasChanges {
|
|
try self.backgroundContext.save()
|
|
try self.viewContext.save()
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|