Andrea Busi
82 lines
2.4 KiB
Swift
82 lines
2.4 KiB
Swift
//
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// BackgroundTaskManager.swift
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// Earthquake Network
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//
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// Created by Andrea Busi on 16/08/23.
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// Copyright © 2023 Earthquake Network. All rights reserved.
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//
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import Foundation
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import BackgroundTasks
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@objc
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class BackgroundTaskManager: NSObject {
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@objc
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static let shared = BackgroundTaskManager()
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private let identifiers: [BackgroundTaskIdentifiable.Type] = [UpdateUserLocationTask.self]
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// MARK: - Public
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@objc
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func registerTasks() {
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identifiers
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.forEach { taskIdentifiable in
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BGTaskScheduler.shared.register(forTaskWithIdentifier: taskIdentifiable.identifier, using: DispatchQueue.global()) { [weak self] task in
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guard let appTask = task as? BGAppRefreshTask else { return }
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self?.handleTask(appTask, with: taskIdentifiable)
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self?.scheduleTaskRequest(for: taskIdentifiable)
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}
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}
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}
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// MARK: - Public
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@objc
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func scheduleUpdateServerPosition() {
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scheduleTaskRequest(for: UpdateUserLocationTask.self)
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}
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// MARK: - Private
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private func scheduleTaskRequest(
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for taskIdentifiable: BackgroundTaskIdentifiable.Type
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) {
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let request = BGAppRefreshTaskRequest(identifier: taskIdentifiable.identifier)
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// Fetch no earlier than X minutes from now
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request.earliestBeginDate = Date(timeIntervalSinceNow: taskIdentifiable.interval)
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//request.requiresNetworkConnectivity = true
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do {
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try BGTaskScheduler.shared.submit(request)
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print("[BackgroundTaskManager] Background task scheduler submitted")
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} catch {
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print("[BackgroundTaskManager] Could not schedule background taksk. Error: \(error)")
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}
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}
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private func handleTask(
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_ appTask: BGAppRefreshTask,
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with taskIdentifiable: BackgroundTaskIdentifiable.Type
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) {
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// create a task
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let task = taskIdentifiable.init()
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// Provide the background task with an expiration handler that cancels the operation.
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appTask.expirationHandler = {
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task.exipration()
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}
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// Handle workload
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task.handle(appTask) { success in
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// Inform the system that the background task is complete
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// when the operation completes.
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appTask.setTaskCompleted(success: success)
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}
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}
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}
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