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diff --git a/Shared/LocalStorageManager.swift b/Shared/LocalStorageManager.swift
index 739ae8d..b938fdf 100644
--- a/Shared/LocalStorageManager.swift
+++ b/Shared/LocalStorageManager.swift
@@ -1,65 +1,99 @@
import CoreData
#if os(iOS)
import UIKit
#elseif os(macOS)
import AppKit
#endif
final class LocalStorageManager {
public static var standard = LocalStorageManager()
public let container: NSPersistentContainer
+ private var oldStoreURL: URL {
+ let appSupport = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask).first!
+ return appSupport.appendingPathComponent("LocalStorageModel.sqlite")
+ }
+
+ private var sharedStoreURL: URL {
+ let id = "group.com.abunchtell.writefreely"
+ let groupContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: id)!
+ return groupContainer.appendingPathComponent("LocalStorageModel.sqlite")
+ }
+
init() {
// Set up the persistent container.
container = NSPersistentContainer(name: "LocalStorageModel")
container.loadPersistentStores { description, error in
if let error = error {
fatalError("Core Data store failed to load with error: \(error)")
}
}
container.viewContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
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 container.viewContext.hasChanges {
do {
try container.viewContext.save()
} catch {
print("Error saving context: \(error)")
}
}
}
func purgeUserCollections() {
let fetchRequest: NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityName: "WFACollection")
let deleteRequest = NSBatchDeleteRequest(fetchRequest: fetchRequest)
do {
try container.viewContext.executeAndMergeChanges(using: deleteRequest)
} catch {
print("Error: Failed to purge cached collections.")
}
}
+
+ func migrateStore(for container: NSPersistentContainer) {
+ let coordinator = container.persistentStoreCoordinator
+
+ guard let oldStore = coordinator.persistentStore(for: oldStoreURL) else {
+ return
+ }
+
+ do {
+ try coordinator.migratePersistentStore(oldStore,
+ to: sharedStoreURL,
+ options: nil,
+ withType: NSSQLiteStoreType)
+ } catch {
+ fatalError("Something went wrong migrating the store: \(error)")
+ }
+
+ do {
+ try FileManager.default.removeItem(at: oldStoreURL)
+ } catch {
+ fatalError("Something went wrong while deleting the old store: \(error)")
+ }
+ }
}
private extension LocalStorageManager {
func saveContextOnResignActive(_ notification: Notification) {
saveContext()
}
}

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