5c6c66c9a1
When Core Data detects a duplicate entry, it deletes the previous entry. This caused Delta to delete the associated ROM and Save State files. Now, there is a check in prepareForDeletion to make sure the object being deleted is not simply being replaced by a newer entry during a merge.
82 lines
2.5 KiB
Swift
82 lines
2.5 KiB
Swift
//
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// SaveState.swift
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// Delta
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//
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// Created by Riley Testut on 1/31/16.
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// Copyright © 2016 Riley Testut. All rights reserved.
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//
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import Foundation
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import DeltaCore
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@objc public enum SaveStateType: Int16
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{
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case auto
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case general
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case locked
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}
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@objc(SaveState)
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public class SaveState: _SaveState, SaveStateProtocol
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{
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public var fileURL: URL {
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let fileURL = DatabaseManager.saveStatesDirectoryURL(for: self.game!).appendingPathComponent(self.filename)
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return fileURL
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}
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public var imageFileURL: URL {
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let imageFilename = (self.filename as NSString).deletingPathExtension + ".png"
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let imageFileURL = DatabaseManager.saveStatesDirectoryURL(for: self.game!).appendingPathComponent(imageFilename)
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return imageFileURL
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}
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public var gameType: GameType {
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return self.game!.type
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}
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@NSManaged private var primitiveFilename: String
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@NSManaged private var primitiveIdentifier: String
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@NSManaged private var primitiveCreationDate: Date
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@NSManaged private var primitiveModifiedDate: Date
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public override func awakeFromInsert()
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{
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super.awakeFromInsert()
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let identifier = UUID().uuidString
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let date = Date()
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self.primitiveIdentifier = identifier
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self.primitiveFilename = identifier
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self.primitiveCreationDate = date
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self.primitiveModifiedDate = date
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}
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public override func prepareForDeletion()
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{
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super.prepareForDeletion()
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// In rare cases, game may actually be nil if game is corrupted, so we ensure it is non-nil first
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guard self.game != nil else { return }
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guard let managedObjectContext = self.managedObjectContext else { return }
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// If a save state with the same identifier is also currently being inserted, Core Data is more than likely resolving a conflict by deleting the previous instance
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// In this case, we make sure we DON'T delete the save state file + misc other Core Data relationships, or else we'll just lose all that data
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guard !managedObjectContext.insertedObjects.contains(where: { ($0 as? SaveState)?.identifier == self.identifier }) else { return }
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guard FileManager.default.fileExists(atPath: self.fileURL.path) else { return }
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do
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{
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try FileManager.default.removeItem(at: self.fileURL)
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try FileManager.default.removeItem(at: self.imageFileURL)
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}
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catch
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{
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print(error)
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}
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}
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}
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