notes/Notes/AppServices/AppServices.swift

import Foundation
import IndieBackup
import SwiftData

/// Owns all service objects; created asynchronously at launch and injected
/// into the SwiftUI environment.
@Observable
@MainActor
final class AppServices {
    let modelContainer: ModelContainer
    let syncEngine: SyncEngine
    let contextService: ContextService
    let backupController: BackupController

    init() async {
        let container = NotesModelContainer.make()
        self.modelContainer = container
        let engine = SyncEngine(modelContainer: container)
        self.syncEngine = engine
        self.contextService = ContextService()
        self.backupController = BackupController(
            configuration: NotesBackupConfiguration(syncEngine: engine)
        )
    }

    /// The file extension this app owns for backup documents. Used to route
    /// `onOpenURL` imports to a restore.
    var backupFileExtension: String { backupController.configuration.backupFileExtension }

    /// Slow startup work (iCloud container discovery) — runs after the UI is up.
    func startDeferredServices() async {
        await syncEngine.connect()
    }
}