Migrates Core Data model from v10 to v11

AltStoreCore/Model/Migrations/Policies/StoreApp10ToStoreApp11Policy.swift

@@ -0,0 +1,102 @@
+//
+//  StoreApp10ToStoreApp11Policy.swift
+//  AltStoreCore
+//
+//  Created by Riley Testut on 9/13/22.
+//  Copyright © 2022 Riley Testut. All rights reserved.
+//
+
+import CoreData
+
+// Can't use NSManagedObject subclasses, so add convenience accessors for KVC.
+fileprivate extension NSManagedObject
+{
+    var storeAppBundleID: String? {
+        let bundleID = self.value(forKey: #keyPath(StoreApp.bundleIdentifier)) as? String
+        return bundleID
+    }
+    
+    var storeAppVersion: String? {
+        let version = self.value(forKey: #keyPath(StoreApp._version)) as? String
+        return version
+    }
+    
+    var storeAppVersionDate: Date? {
+        let versionDate = self.value(forKey: #keyPath(StoreApp._versionDate)) as? Date
+        return versionDate
+    }
+    
+    var storeAppVersionDescription: String? {
+        let versionDescription = self.value(forKey: #keyPath(StoreApp._versionDescription)) as? String
+        return versionDescription
+    }
+    
+    var storeAppSize: NSNumber? {
+        let size = self.value(forKey: #keyPath(StoreApp._size)) as? NSNumber
+        return size
+    }
+    
+    var storeAppDownloadURL: URL? {
+        let downloadURL = self.value(forKey: #keyPath(StoreApp._downloadURL)) as? URL
+        return downloadURL
+    }
+    
+    func setStoreAppLatestVersion(_ appVersion: NSManagedObject)
+    {
+        self.setValue(appVersion, forKey: #keyPath(StoreApp.latestVersion))
+        
+        let versions = NSOrderedSet(array: [appVersion])
+        self.setValue(versions, forKey: #keyPath(StoreApp._versions))
+    }
+    
+    class func makeAppVersion(version: String,
+                              date: Date,
+                              localizedDescription: String?,
+                              downloadURL: URL,
+                              size: Int64,
+                              appBundleID: String,
+                              in context: NSManagedObjectContext) -> NSManagedObject
+    {
+        let appVersion = NSEntityDescription.insertNewObject(forEntityName: AppVersion.entity().name!, into: context)
+        appVersion.setValue(version, forKey: #keyPath(AppVersion.version))
+        appVersion.setValue(date, forKey: #keyPath(AppVersion.date))
+        appVersion.setValue(localizedDescription, forKey: #keyPath(AppVersion.localizedDescription))
+        appVersion.setValue(downloadURL, forKey: #keyPath(AppVersion.downloadURL))
+        appVersion.setValue(size, forKey: #keyPath(AppVersion.size))
+        appVersion.setValue(appBundleID, forKey: #keyPath(AppVersion.appBundleID))
+        return appVersion
+    }
+}
+
+@objc(StoreApp10ToStoreApp11Policy)
+class StoreApp10ToStoreApp11Policy: NSEntityMigrationPolicy
+{
+    override func createDestinationInstances(forSource sInstance: NSManagedObject, in mapping: NSEntityMapping, manager: NSMigrationManager) throws
+    {
+        try super.createDestinationInstances(forSource: sInstance, in: mapping, manager: manager)
+        
+        guard let appBundleID = sInstance.storeAppBundleID,
+              let version = sInstance.storeAppVersion,
+              let versionDate = sInstance.storeAppVersionDate,
+              // let versionDescription = sInstance.storeAppVersionDescription, // Optional
+              let downloadURL = sInstance.storeAppDownloadURL,
+              let size = sInstance.storeAppSize as? Int64
+        else { return }
+        
+        guard
+            let destinationStoreApp = manager.destinationInstances(forEntityMappingName: mapping.name, sourceInstances: [sInstance]).first,
+            let context = destinationStoreApp.managedObjectContext
+        else { fatalError("A destination StoreApp and its managedObjectContext must exist.") }
+        
+        let appVersion = NSManagedObject.makeAppVersion(
+            version: version,
+            date: versionDate,
+            localizedDescription: sInstance.storeAppVersionDescription,
+            downloadURL: downloadURL,
+            size: Int64(size),
+            appBundleID: appBundleID,
+            in: context)
+        
+        destinationStoreApp.setStoreAppLatestVersion(appVersion)
+    }
+}