90 lines
3.0 KiB
Swift
90 lines
3.0 KiB
Swift
// Sources/Core/Push/NotificationDelegate.swift
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// T-2.9: APNs — foreground presentation control + tap handling
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import UserNotifications
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import UIKit
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/// Centralised `UNUserNotificationCenterDelegate`.
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///
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/// Responsibilities:
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/// - Suppresses the banner when the user is already viewing the relevant
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/// terminal session (`visibleSessionId`).
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/// - Posts `"piRemote.openSession"` when the user taps a notification,
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/// carrying the session-id as the notification object, so any subscriber
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/// (e.g. the root navigation stack) can navigate to the right session.
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@MainActor
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final class NotificationDelegate: NSObject, UNUserNotificationCenterDelegate, ObservableObject {
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// MARK: - Singleton
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static let shared = NotificationDelegate()
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private override init() {}
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// MARK: - State
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/// Set by the visible terminal view so foreground banners can be suppressed.
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var visibleSessionId: String? = nil
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// MARK: - Setup
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/// Wire this delegate into `UNUserNotificationCenter`.
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/// Call once from `piRemoteApp.onAppear`.
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func setup() {
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UNUserNotificationCenter.current().delegate = self
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}
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// MARK: - Permission
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/// Request alert + sound + badge authorisation.
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/// - Returns: `true` if the user granted permission.
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func requestPermission() async -> Bool {
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do {
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return try await UNUserNotificationCenter.current()
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.requestAuthorization(options: [.alert, .sound, .badge])
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} catch {
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return false
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}
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}
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// MARK: - UNUserNotificationCenterDelegate
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/// Foreground presentation: suppress the banner when the relevant session
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/// is already on-screen.
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nonisolated func userNotificationCenter(
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_ center: UNUserNotificationCenter,
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willPresent notification: UNNotification,
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withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void
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) {
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let sessionId = notification.request.content.userInfo["sessionId"] as? String
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nonisolated(unsafe) let ch = completionHandler
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Task { @MainActor in
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if let sessionId, sessionId == self.visibleSessionId {
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ch([])
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} else {
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ch([.banner, .sound, .badge])
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}
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}
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}
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/// Tap handling: post `"piRemote.openSession"` so any subscriber can
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/// navigate to the correct session without a tight coupling.
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nonisolated func userNotificationCenter(
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_ center: UNUserNotificationCenter,
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didReceive response: UNNotificationResponse,
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withCompletionHandler completionHandler: @escaping () -> Void
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) {
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let sessionId = response.notification.request.content.userInfo["sessionId"] as? String
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nonisolated(unsafe) let ch = completionHandler
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Task { @MainActor in
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NotificationCenter.default.post(
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name: Notification.Name("piRemote.openSession"),
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object: sessionId
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)
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ch()
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}
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}
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}
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