mirror of
https://github.com/writeas/writefreely-swiftui-multiplatform.git
synced 2024-11-15 01:11:02 +00:00
65 lines
2.3 KiB
Swift
65 lines
2.3 KiB
Swift
import CoreData
|
||
|
||
#if os(iOS)
|
||
import UIKit
|
||
#elseif os(macOS)
|
||
import AppKit
|
||
#endif
|
||
|
||
class LocalStorageManager {
|
||
static let persistentContainer: NSPersistentContainer = {
|
||
let container = NSPersistentContainer(name: "LocalStorageModel")
|
||
container.loadPersistentStores { _, error in
|
||
container.viewContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
|
||
if let error = error {
|
||
fatalError("Unresolved error loading persistent store: \(error)")
|
||
}
|
||
}
|
||
return container
|
||
}()
|
||
|
||
init() {
|
||
let center = NotificationCenter.default
|
||
|
||
#if os(iOS)
|
||
let notification = UIApplication.willResignActiveNotification
|
||
#elseif os(macOS)
|
||
let notification = NSApplication.willResignActiveNotification
|
||
#endif
|
||
|
||
// We don't need to worry about removing this observer because we're targeting iOS 9+ / macOS 10.11+; the
|
||
// system will clean this up the next time it would be posted to.
|
||
// See: https://developer.apple.com/documentation/foundation/notificationcenter/1413994-removeobserver
|
||
// And: https://developer.apple.com/documentation/foundation/notificationcenter/1407263-removeobserver
|
||
// swiftlint:disable:next discarded_notification_center_observer
|
||
center.addObserver(forName: notification, object: nil, queue: nil, using: self.saveContextOnResignActive)
|
||
}
|
||
|
||
func saveContext() {
|
||
if LocalStorageManager.persistentContainer.viewContext.hasChanges {
|
||
do {
|
||
try LocalStorageManager.persistentContainer.viewContext.save()
|
||
} catch {
|
||
print("Error saving context: \(error)")
|
||
}
|
||
}
|
||
}
|
||
|
||
func purgeUserCollections() {
|
||
let fetchRequest: NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityName: "WFACollection")
|
||
let deleteRequest = NSBatchDeleteRequest(fetchRequest: fetchRequest)
|
||
|
||
do {
|
||
try LocalStorageManager.persistentContainer.viewContext.executeAndMergeChanges(using: deleteRequest)
|
||
} catch {
|
||
print("Error: Failed to purge cached collections.")
|
||
}
|
||
}
|
||
}
|
||
|
||
private extension LocalStorageManager {
|
||
func saveContextOnResignActive(_ notification: Notification) {
|
||
saveContext()
|
||
}
|
||
}
|