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import Foundation
import UserNotifications
@MainActor
final class LocalNotificationService {
static let shared = LocalNotificationService()
private init() { /* Singleton; use the shared instance. */ }
static let domainUserInfoKey = "domain"
static let domainCategoryIdentifier = "domain-event"
static let reinspectActionIdentifier = "reinspect"
func configureForegroundPresentation() {
let center = UNUserNotificationCenter.current()
center.delegate = NotificationCenterDelegate.shared
let reinspect = UNNotificationAction(
identifier: Self.reinspectActionIdentifier,
title: "Re-inspect",
options: []
)
center.setNotificationCategories([
UNNotificationCategory(
identifier: Self.domainCategoryIdentifier,
actions: [reinspect],
intentIdentifiers: [],
options: []
)
])
}
func requestAuthorizationIfNeeded() async -> Bool {
let center = UNUserNotificationCenter.current()
let settings = await center.notificationSettings()
switch settings.authorizationStatus {
case .authorized, .provisional, .ephemeral:
return true
case .notDetermined:
return (try? await center.requestAuthorization(options: [.alert, .badge, .sound])) ?? false
case .denied:
return false
@unknown default:
return false
}
}
func isAuthorizedForAlerts() async -> Bool {
let settings = await UNUserNotificationCenter.current().notificationSettings()
switch settings.authorizationStatus {
case .authorized, .provisional, .ephemeral:
return true
case .denied, .notDetermined:
return false
@unknown default:
return false
}
}
func notifyDomainEvent(domain: String, message: String, severity: ChangeSeverity) async {
await schedule(
identifier: "domain-change-\(domain)",
title: domain,
body: message,
interruptionLevel: severity == .high ? .timeSensitive : .active,
domain: domain
)
}
func notifyCertificateWarning(domain: String, daysRemaining: Int) async {
await schedule(
identifier: "cert-warning-\(domain)",
title: domain,
body: "Certificate expires in \(daysRemaining) days",
interruptionLevel: .timeSensitive,
domain: domain
)
}
func notifyMonitoringAlert(
domain: String,
message: String,
severity: MonitoringAlertSeverity
) async {
let interruptionLevel: UNNotificationInterruptionLevel
switch severity {
case .critical:
interruptionLevel = .timeSensitive
case .warning, .info:
interruptionLevel = .active
}
await schedule(
identifier: "monitoring-\(domain)-\(UUID().uuidString)",
title: domain,
body: message,
interruptionLevel: interruptionLevel,
domain: domain
)
}
func notifyMonitoringSummary(
domain: String,
alerts: [MonitoringPendingAlert]
) async {
let summary = alerts
.sorted { $0.detectedAt < $1.detectedAt }
.prefix(2)
.map(\.message)
.joined(separator: " • ")
let body: String
if alerts.count <= 1 {
body = alerts.first?.message ?? "Monitoring change detected"
} else if summary.isEmpty {
body = "\(alerts.count) monitoring changes detected"
} else {
body = "\(alerts.count) monitoring changes: \(summary)"
}
let severity = alerts.map(\.severity).max() ?? .info
let interruptionLevel: UNNotificationInterruptionLevel = severity == .critical ? .timeSensitive : .active
await schedule(
identifier: "monitoring-summary-\(domain)-\(UUID().uuidString)",
title: domain,
body: body,
interruptionLevel: interruptionLevel,
domain: domain
)
}
func notifySweepComplete(summary: BatchSweepSummary) async {
let body = "\(summary.changedDomains) changed, \(summary.warningDomains) warnings, \(summary.unchangedDomains) unchanged"
await schedule(
identifier: "sweep-complete",
title: summary.source == .watchlistRefresh ? "Check All Complete" : "Batch Complete",
body: body,
interruptionLevel: .active
)
}
func notifyScheduledReportReady(domainCount: Int) async {
await schedule(
identifier: "scheduled-report-\(UUID().uuidString)",
title: "Scheduled Report Ready",
body: "Report generated for \(domainCount) domain\(domainCount == 1 ? "" : "s").",
interruptionLevel: .active
)
}
func clearAllNotifications() async {
let center = UNUserNotificationCenter.current()
center.removeAllPendingNotificationRequests()
center.removeAllDeliveredNotifications()
}
private func schedule(
identifier: String,
title: String,
body: String,
interruptionLevel: UNNotificationInterruptionLevel,
domain: String? = nil
) async {
let content = UNMutableNotificationContent()
content.title = title
content.body = body
content.sound = .default
content.interruptionLevel = interruptionLevel
if let domain {
// Group alerts per domain and let taps/actions route back into it.
content.threadIdentifier = domain
content.userInfo = [Self.domainUserInfoKey: domain]
content.categoryIdentifier = Self.domainCategoryIdentifier
}
let request = UNNotificationRequest(
identifier: identifier,
content: content,
trigger: UNTimeIntervalNotificationTrigger(timeInterval: 0.1, repeats: false)
)
try? await UNUserNotificationCenter.current().add(request)
}
}
private final class NotificationCenterDelegate: NSObject, UNUserNotificationCenterDelegate {
static let shared = NotificationCenterDelegate()
func userNotificationCenter(
_: UNUserNotificationCenter,
willPresent _: UNNotification
) async -> UNNotificationPresentationOptions {
[.banner, .list, .sound]
}
func userNotificationCenter(
_: UNUserNotificationCenter,
didReceive response: UNNotificationResponse
) async {
let userInfo = response.notification.request.content.userInfo
guard let domain = userInfo[LocalNotificationService.domainUserInfoKey] as? String,
!domain.isEmpty
else { return }
let action: DomainDigDeepLink.Action
if response.actionIdentifier == LocalNotificationService.reinspectActionIdentifier {
action = .inspect(domain)
} else {
// Default tap: open the tracked domain's detail.
action = .detail(domain)
}
await MainActor.run {
DomainDigIntentRouter.shared.pendingAction = action
}
}
}
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