[ExpFeat] Adds “Repair Database” to explicitly repair database

Disables automatic database repairing at app launch.

Delta/Experimental Features/ExperimentalFeatures.swift

@@ -41,6 +41,10 @@ struct ExperimentalFeatures: FeatureContainer
              options: ReviewSaveStatesOptions())
     var reviewSaveStates
     
+    @Feature(name: "Repair Database",
+             description: "Repair invalid relationships in Delta's game database on next app launch.")
+    var repairDatabase
+    
     @Feature(name: "Alternate App Icon",
              description: "Change the app icon.",
              options: AlternateAppIconOptions())

Delta/Launch/LaunchViewController.swift

@@ -78,33 +78,12 @@ extension LaunchViewController
         
         // Repair database _after_ starting SyncManager so we can access RecordController.
         let isDatabaseRepaired = RSTLaunchCondition(condition: { !UserDefaults.standard.shouldRepairDatabase }) { completionHandler in
-            func finish()
-            {
-                UserDefaults.standard.shouldRepairDatabase = false
-                completionHandler(nil)
-            }
-            
-            do
-            {
-                let fetchRequest = Game.fetchRequest()
-                fetchRequest.fetchLimit = 1
-                
-                let isDatabaseEmpty = try DatabaseManager.shared.viewContext.count(for: fetchRequest) == 0
-                guard !isDatabaseEmpty else {
-                    // Database has no games, so no need to repair database.
-                    finish()
-                    return
-                }
-            }
-            catch
-            {
-                print("Failed to fetch games at launch, repairing database just to be safe.", error)
-            }
-            
             let repairViewController = RepairDatabaseViewController()
             repairViewController.completionHandler = { [weak repairViewController] in
                 repairViewController?.dismiss(animated: true)
-                finish()
+                
+                UserDefaults.standard.shouldRepairDatabase = false
+                completionHandler(nil)
             }
             
             let navigationController = UINavigationController(rootViewController: repairViewController)

Delta/Settings/Settings.swift

@@ -53,7 +53,7 @@ struct Settings
     
     static func registerDefaults()
     {
-        var defaults = [#keyPath(UserDefaults.translucentControllerSkinOpacity): 0.7,
+        let defaults = [#keyPath(UserDefaults.translucentControllerSkinOpacity): 0.7,
                         #keyPath(UserDefaults.gameShortcutsMode): GameShortcutsMode.recent.rawValue,
                         #keyPath(UserDefaults.isButtonHapticFeedbackEnabled): true,
                         #keyPath(UserDefaults.isThumbstickHapticFeedbackEnabled): true,
@@ -63,12 +63,7 @@ struct Settings
                         #keyPath(UserDefaults.respectSilentMode): true,
                         Settings.preferredCoreSettingsKey(for: .ds): MelonDS.core.identifier] as [String : Any]
         
-        #if BETA
-        
-        // Assume we need to repair database relationships until explicitly set to false.
-        defaults[#keyPath(UserDefaults.shouldRepairDatabase)] = true
-        
-        #else
+        #if !BETA
         // Manually set MelonDS as preferred DS core in case DeSmuME is cached from a previous version.
         UserDefaults.standard.set(MelonDS.core.identifier, forKey: Settings.preferredCoreSettingsKey(for: .ds))
         
@@ -77,6 +72,12 @@ struct Settings
         #endif
         
         UserDefaults.standard.register(defaults: defaults)
+        
+        if ExperimentalFeatures.shared.repairDatabase.isEnabled
+        {
+            UserDefaults.standard.shouldRepairDatabase = true
+            ExperimentalFeatures.shared.repairDatabase.isEnabled = false // Disable so we only repair database once.
+        }
     }
 }