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//
// AskNotifier.swift
// AT-IRC
//
// Local notifications for owner questions. True APNs remote push needs a
// server-side sender and provisioning; polling while the app runs plus a
// local notification is the shipping scope.
//
import Foundation
import OSLog
import UserNotifications
final class AskNotifier: NSObject, UNUserNotificationCenterDelegate {
static let shared = AskNotifier()
private var prepared = false
private let log = Logger(subsystem: "com.fedfork.irc.AT-IRC", category: "notify")
private override init() {
super.init()
UNUserNotificationCenter.current().delegate = self
}
/// Ask once for alert/sound permission; a denial only leaves the in-app
/// badge and question list. Scripted UI tests set
/// ATIRC_SKIP_NOTIFICATION_PROMPT=1 so the system alert does not keep the
/// app from becoming active.
func prepare() {
guard !prepared else { return }
prepared = true
#if DEBUG
let skip = ProcessInfo.processInfo.environment["ATIRC_SKIP_NOTIFICATION_PROMPT"] == "1"
log.notice("prepare skip=\(skip, privacy: .public)")
if skip {
return
}
#endif
Task {
_ = try? await UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge])
}
}
func announce(_ ask: AskQuestion) {
let content = UNMutableNotificationContent()
content.title = "Question from \(ask.asker)"
content.body = ask.question
content.sound = .default
content.userInfo = ["askID": ask.id]
let request = UNNotificationRequest(
identifier: "atirc.ask.\(ask.id)",
content: content,
trigger: nil
)
UNUserNotificationCenter.current().add(request)
}
/// Drop the notification once the question has been answered or decided.
func clear(_ askID: String) {
let identifier = "atirc.ask.\(askID)"
UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: [identifier])
UNUserNotificationCenter.current().removePendingNotificationRequests(withIdentifiers: [identifier])
}
nonisolated func userNotificationCenter(
_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void
) {
completionHandler([.banner, .sound, .list])
}
}
