Centralise migrations

App/App_iOS.swift

@@ -31,10 +31,7 @@ struct Kiwix: App {
         UNUserNotificationCenter.current().delegate = appDelegate
         // MARK: - migrations
         if !ProcessInfo.processInfo.arguments.contains("testing") {
-            let migrations = MigrationService(migrations: [
-                Migrations.schemeToZIM(using: Database.shared.viewContext)
-            ])
-            _ = migrations.migrateAll()
+            _ = MigrationService().migrateAll()
         }
     }
 

App/App_macOS.swift

@@ -230,10 +230,7 @@ struct RootView: View {
             }
             // MARK: - migrations
             if !ProcessInfo.processInfo.arguments.contains("testing") {
-                let migrations = MigrationService(migrations: [
-                    Migrations.schemeToZIM(using: Database.shared.viewContext)
-                ])
-                _ = migrations.migrateAll()
+                _ = MigrationService().migrateAll()
             }
         }
         .withHostingWindow { [windowTracker] hostWindow in

Model/Migration/MigrateSchemeToZIM.swift

@@ -16,8 +16,7 @@
 import Foundation
 import CoreData
 
-enum Migrations {
-
+extension Migrations {
     /// Change the bookmarks articleURLs from "kiwix://..." to "zim://..."
     /// - Parameter context: DataBase context
     /// - Returns: Migration - general struct

Model/Migration/MigrationService.swift

@@ -39,6 +39,10 @@ struct Migration {
 struct MigrationService {
     let migrations: [Migration]
 
+    init(migrations: [Migration] = Migrations.all) {
+        self.migrations = migrations
+    }
+
     func migrateAll(using userDefaults: UserDefaulting = UserDefaults.standard) -> Bool {
         var allSucceeded = true
         for migration in migrations where migration.migrate(userDefaults) == false {

Model/Migration/Migrations.swift

@@ -0,0 +1,25 @@
+// This file is part of Kiwix for iOS & macOS.
+//
+// Kiwix is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// any later version.
+//
+// Kiwix is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Kiwix; If not, see https://www.gnu.org/licenses/.
+
+import Foundation
+
+enum Migrations {
+    
+    /// A central place for all migrations
+    /// they will be executed in the order specified here
+    static let all: [Migration] = [
+        Self.schemeToZIM(using: Database.shared.viewContext)
+    ]
+}