AppDelegate.swift

//
// Copyright 2013 - 2021 Anton Tananaev (anton@traccar.org)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import UIKit
import CoreData
import Firebase

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, PositionProviderDelegate {
    
    var window: UIWindow?
    
    var managedObjectContext: NSManagedObjectContext?
    var managedObjectModel: NSManagedObjectModel?
    var persistentStoreCoordinator: NSPersistentStoreCoordinator?
    
    var trackingController: TrackingController?
    var positionProvider: PositionProvider?
    
    static var instance: AppDelegate {
        return UIApplication.shared.delegate as! AppDelegate
    }
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]?) -> Bool {
        #if FIREBASE
        FirebaseApp.configure()
        #endif

        UIDevice.current.isBatteryMonitoringEnabled = true

        let userDefaults = UserDefaults.standard
        if userDefaults.string(forKey: "device_id_preference") == nil {
            let identifier = "\(Int.random(in: 100000..<1000000))"
            userDefaults.setValue(identifier, forKey: "device_id_preference")
        }

        registerDefaultsFromSettingsBundle()
        
        migrateLegacyDefaults()
        
        let modelUrl = Bundle.main.url(forResource: "TraccarClient", withExtension: "momd")
        managedObjectModel = NSManagedObjectModel(contentsOf: modelUrl!)
        
        persistentStoreCoordinator = NSPersistentStoreCoordinator(managedObjectModel: managedObjectModel!)
        let storeUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).last?.appendingPathComponent("TraccarClient.sqlite")
        let options = [NSMigratePersistentStoresAutomaticallyOption: true, NSInferMappingModelAutomaticallyOption: true]
        try! persistentStoreCoordinator?.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: storeUrl, options: options)
        
        managedObjectContext = NSManagedObjectContext.init(concurrencyType: .mainQueueConcurrencyType)
        managedObjectContext?.persistentStoreCoordinator = persistentStoreCoordinator

        if userDefaults.bool(forKey: "service_status_preference") {
            StatusViewController.addMessage(NSLocalizedString("Service created", comment: ""))
            trackingController = TrackingController()
            trackingController?.start()
        }