d8b29954a2
- iOS: Implement rolling window counting using UNUserNotificationCenter - iOS: Enable TTL validation in scheduler before arming notifications - iOS: Implement SQLite persistence for save/delete/clear operations - Android: Implement rolling window counting using storage as source of truth - Android: Add dateBoundsMillis helper for date range calculations Removes all TODO stubs affecting capacity/rate-limiting correctness. Fixes runtime behavior to match test expectations and optimizer logic. Refs: Deep fixes directive for bottom-of-tree gaps
568 lines
25 KiB
Swift
568 lines
25 KiB
Swift
/**
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* DailyNotificationScheduler.swift
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*
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* Handles scheduling and timing of daily notifications using UNUserNotificationCenter
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* Implements calendar-based triggers with timing tolerance (±180s) and permission auto-healing
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*
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* @author Matthew Raymer
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* @version 1.0.0
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*/
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import Foundation
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import UserNotifications
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/**
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* Manages scheduling of daily notifications using UNUserNotificationCenter
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*
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* This class handles the scheduling aspect of the prefetch → cache → schedule → display pipeline.
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* It supports calendar-based triggers with iOS timing tolerance (±180s).
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*/
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class DailyNotificationScheduler {
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// MARK: - Constants
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private static let TAG = "DailyNotificationScheduler"
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private static let NOTIFICATION_CATEGORY_ID = "DAILY_NOTIFICATION"
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private static let TIMING_TOLERANCE_SECONDS: TimeInterval = 180 // ±180 seconds tolerance
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// MARK: - Properties
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private let notificationCenter: UNUserNotificationCenter
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private var scheduledNotifications: Set<String> = []
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private let schedulerQueue = DispatchQueue(label: "com.timesafari.dailynotification.scheduler", attributes: .concurrent)
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// TTL enforcement
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private weak var ttlEnforcer: DailyNotificationTTLEnforcer?
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// MARK: - Initialization
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/**
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* Initialize scheduler
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*/
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init() {
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self.notificationCenter = UNUserNotificationCenter.current()
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setupNotificationCategory()
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}
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/**
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* Set TTL enforcer for freshness validation
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*
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* @param ttlEnforcer TTL enforcement instance
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*/
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func setTTLEnforcer(_ ttlEnforcer: DailyNotificationTTLEnforcer) {
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self.ttlEnforcer = ttlEnforcer
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print("\(Self.TAG): TTL enforcer set for freshness validation")
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}
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// MARK: - Notification Category Setup
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/**
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* Setup notification category for actions
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*/
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private func setupNotificationCategory() {
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let category = UNNotificationCategory(
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identifier: Self.NOTIFICATION_CATEGORY_ID,
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actions: [],
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intentIdentifiers: [],
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options: []
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)
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notificationCenter.setNotificationCategories([category])
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print("\(Self.TAG): Notification category setup complete")
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}
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// MARK: - Permission Management
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/**
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* Check notification permission status
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*
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* @return Authorization status
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*/
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func checkPermissionStatus() async -> UNAuthorizationStatus {
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let settings = await notificationCenter.notificationSettings()
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return settings.authorizationStatus
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}
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/**
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* Request notification permissions
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*
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* @return true if permissions granted
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*/
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func requestPermissions() async -> Bool {
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do {
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let granted = try await notificationCenter.requestAuthorization(options: [.alert, .sound, .badge])
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print("\(Self.TAG): Permission request result: \(granted)")
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return granted
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} catch {
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print("\(Self.TAG): Permission request failed: \(error)")
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return false
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}
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}
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/**
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* Auto-heal permissions: Check and request if needed
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*
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* @return Authorization status after auto-healing
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*/
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func autoHealPermissions() async -> UNAuthorizationStatus {
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let status = await checkPermissionStatus()
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switch status {
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case .notDetermined:
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// Request permissions
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let granted = await requestPermissions()
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return granted ? .authorized : .denied
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case .denied:
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// Cannot auto-heal denied permissions
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return .denied
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case .authorized, .provisional, .ephemeral:
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return status
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@unknown default:
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return .notDetermined
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}
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}
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// MARK: - Scheduling
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/**
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* Schedule a notification for delivery
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*
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* @param content Notification content to schedule
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* @return true if scheduling was successful
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*/
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func scheduleNotification(_ content: NotificationContent) async -> Bool {
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do {
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print("\(Self.TAG): Scheduling notification: \(content.id)")
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// Permission auto-healing
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let permissionStatus = await autoHealPermissions()
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if permissionStatus != .authorized && permissionStatus != .provisional {
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print("\(Self.TAG): Notifications denied, cannot schedule")
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// Log error code for debugging
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print("\(Self.TAG): Error code: \(DailyNotificationErrorCodes.NOTIFICATIONS_DENIED)")
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return false
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}
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// TTL validation before arming
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if let ttlEnforcer = ttlEnforcer {
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let okToArm = ttlEnforcer.validateBeforeArming(content)
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if !okToArm {
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print("\(Self.TAG): TTL validation failed, skipping schedule for \(content.id)")
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return false
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}
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}
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// Cancel any existing notification for this ID
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await cancelNotification(id: content.id)
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// Create notification content
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let notificationContent = UNMutableNotificationContent()
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notificationContent.title = content.title ?? "Daily Update"
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notificationContent.body = content.body ?? "Your daily notification is ready"
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notificationContent.sound = .default
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notificationContent.categoryIdentifier = Self.NOTIFICATION_CATEGORY_ID
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notificationContent.userInfo = [
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"notification_id": content.id,
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"scheduled_time": content.scheduledTime,
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"fetched_at": content.fetchedAt
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]
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// Create calendar trigger for daily scheduling
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let scheduledDate = content.getScheduledTimeAsDate()
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let calendar = Calendar.current
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let dateComponents = calendar.dateComponents([.year, .month, .day, .hour, .minute], from: scheduledDate)
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let trigger = UNCalendarNotificationTrigger(
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dateMatching: dateComponents,
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repeats: false
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)
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// Create notification request
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let request = UNNotificationRequest(
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identifier: content.id,
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content: notificationContent,
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trigger: trigger
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)
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// Schedule notification
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try await notificationCenter.add(request)
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schedulerQueue.async(flags: .barrier) {
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self.scheduledNotifications.insert(content.id)
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}
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// Log pending count for test scripts (matches Android's alarm count logging)
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// Use NSLog to ensure it appears in system logs (print() may not always be captured)
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let pendingCount = await getPendingNotificationCount()
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NSLog("\(Self.TAG): Notification scheduled successfully for \(scheduledDate), id=\(content.id), pendingCount=\(pendingCount)")
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print("\(Self.TAG): Notification scheduled successfully for \(scheduledDate), id=\(content.id), pendingCount=\(pendingCount)")
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return true
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} catch {
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print("\(Self.TAG): Error scheduling notification: \(error)")
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return false
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}
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}
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/**
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* Cancel a notification by ID
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*
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* @param id Notification ID
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*/
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func cancelNotification(id: String) async {
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notificationCenter.removePendingNotificationRequests(withIdentifiers: [id])
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schedulerQueue.async(flags: .barrier) {
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self.scheduledNotifications.remove(id)
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}
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print("\(Self.TAG): Notification cancelled: \(id)")
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}
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/**
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* Cancel all scheduled notifications
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*/
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func cancelAllNotifications() async {
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notificationCenter.removeAllPendingNotificationRequests()
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schedulerQueue.async(flags: .barrier) {
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self.scheduledNotifications.removeAll()
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}
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print("\(Self.TAG): All notifications cancelled")
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}
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// MARK: - Status Queries
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/**
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* Get pending notification requests
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*
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* @return Array of pending notification identifiers
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*/
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func getPendingNotifications() async -> [String] {
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let requests = await notificationCenter.pendingNotificationRequests()
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return requests.map { $0.identifier }
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}
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/**
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* Get notification status
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*
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* @param id Notification ID
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* @return true if notification is scheduled
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*/
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func isNotificationScheduled(id: String) async -> Bool {
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let requests = await notificationCenter.pendingNotificationRequests()
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return requests.contains { $0.identifier == id }
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}
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/**
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* Get count of pending notifications
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*
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* @return Count of pending notifications
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*/
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func getPendingNotificationCount() async -> Int {
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let requests = await notificationCenter.pendingNotificationRequests()
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return requests.count
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}
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// MARK: - Helper Methods
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/**
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* Format time for logging
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*
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* @param timestamp Timestamp in milliseconds
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* @return Formatted time string
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*/
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private func formatTime(_ timestamp: Int64) -> String {
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let date = Date(timeIntervalSince1970: Double(timestamp) / 1000.0)
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let formatter = DateFormatter()
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formatter.dateStyle = .medium
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formatter.timeStyle = .short
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return formatter.string(from: date)
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}
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/**
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* Calculate next occurrence of a daily time
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*
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* Matches Android calculateNextOccurrence() functionality
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*
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* @param hour Hour of day (0-23)
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* @param minute Minute of hour (0-59)
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* @return Timestamp in milliseconds of next occurrence
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*/
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func calculateNextOccurrence(hour: Int, minute: Int) -> Int64 {
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let calendar = Calendar.current
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let now = Date()
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var components = calendar.dateComponents([.year, .month, .day], from: now)
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components.hour = hour
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components.minute = minute
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components.second = 0
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var scheduledDate = calendar.date(from: components) ?? now
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// If time has passed today, schedule for tomorrow
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if scheduledDate <= now {
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scheduledDate = calendar.date(byAdding: .day, value: 1, to: scheduledDate) ?? scheduledDate
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}
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return Int64(scheduledDate.timeIntervalSince1970 * 1000)
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}
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/**
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* Get next notification time from pending notifications
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*
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* @return Timestamp in milliseconds of next notification or nil
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*/
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func getNextNotificationTime() async -> Int64? {
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let requests = await notificationCenter.pendingNotificationRequests()
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// Find the earliest scheduled notification by checking all requests
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var earliestDate: Date? = nil
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var earliestRequestId: String? = nil
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var allTimes: [(String, String)] = []
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for request in requests {
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var requestTime: Date? = nil
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if let trigger = request.trigger as? UNCalendarNotificationTrigger,
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let nextDate = trigger.nextTriggerDate() {
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requestTime = nextDate
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} else if let trigger = request.trigger as? UNTimeIntervalNotificationTrigger,
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let nextDate = trigger.nextTriggerDate() {
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requestTime = nextDate
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}
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if let time = requestTime {
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let timeStr = formatTime(Int64(time.timeIntervalSince1970 * 1000))
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allTimes.append((request.identifier, timeStr))
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if earliestDate == nil || time < earliestDate! {
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earliestDate = time
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earliestRequestId = request.identifier
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}
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}
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}
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guard let nextDate = earliestDate else {
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NSLog("DNP-ROLLOVER: GET_NEXT_TIME no_pending_requests")
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print("DNP-ROLLOVER: GET_NEXT_TIME no_pending_requests")
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return nil
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}
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let nextTime = Int64(nextDate.timeIntervalSince1970 * 1000)
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let nextTimeStr = formatTime(nextTime)
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let allTimesStr = allTimes.map { "\($0.0):\($0.1)" }.joined(separator: ", ")
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NSLog("DNP-ROLLOVER: GET_NEXT_TIME found=\(nextTimeStr) id=\(earliestRequestId ?? "unknown") from \(requests.count) pending: [\(allTimesStr)]")
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print("DNP-ROLLOVER: GET_NEXT_TIME found=\(nextTimeStr) id=\(earliestRequestId ?? "unknown") from \(requests.count) pending: [\(allTimesStr)]")
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return nextTime
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}
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/**
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* Calculate next scheduled time from current scheduled time (24 hours later, DST-safe)
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*
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* Matches Android calculateNextScheduledTime() functionality
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* Handles DST transitions automatically using Calendar
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*
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* @param currentScheduledTime Current scheduled time in milliseconds
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* @return Next scheduled time in milliseconds (24 hours later)
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*/
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func calculateNextScheduledTime(_ currentScheduledTime: Int64) -> Int64 {
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let calendar = Calendar.current
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let currentDate = Date(timeIntervalSince1970: Double(currentScheduledTime) / 1000.0)
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let currentTimeStr = formatTime(currentScheduledTime)
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// Add 24 hours (handles DST transitions automatically)
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guard let nextDate = calendar.date(byAdding: .hour, value: 24, to: currentDate) else {
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// Fallback to simple 24-hour addition if calendar calculation fails
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let fallbackTime = currentScheduledTime + (24 * 60 * 60 * 1000)
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let fallbackTimeStr = formatTime(fallbackTime)
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NSLog("DNP-ROLLOVER: DST_CALC_FAILED current=\(currentTimeStr) using_fallback=\(fallbackTimeStr)")
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print("DNP-ROLLOVER: DST_CALC_FAILED current=\(currentTimeStr) using_fallback=\(fallbackTimeStr)")
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return fallbackTime
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}
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let nextTime = Int64(nextDate.timeIntervalSince1970 * 1000)
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let nextTimeStr = formatTime(nextTime)
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// Validate: Log DST transitions for debugging
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let currentHour = calendar.component(.hour, from: currentDate)
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let currentMinute = calendar.component(.minute, from: currentDate)
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let nextHour = calendar.component(.hour, from: nextDate)
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let nextMinute = calendar.component(.minute, from: nextDate)
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if currentHour != nextHour || currentMinute != nextMinute {
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NSLog("DNP-ROLLOVER: DST_TRANSITION current=\(currentHour):\(String(format: "%02d", currentMinute)) next=\(nextHour):\(String(format: "%02d", nextMinute))")
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print("DNP-ROLLOVER: DST_TRANSITION current=\(currentHour):\(String(format: "%02d", currentMinute)) next=\(nextHour):\(String(format: "%02d", nextMinute))")
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}
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// Log the calculation result
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let timeDiffMs = nextTime - currentScheduledTime
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let timeDiffHours = Double(timeDiffMs) / 1000.0 / 60.0 / 60.0
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NSLog("DNP-ROLLOVER: CALC_NEXT current=\(currentTimeStr) next=\(nextTimeStr) diff_hours=\(String(format: "%.2f", timeDiffHours))")
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print("DNP-ROLLOVER: CALC_NEXT current=\(currentTimeStr) next=\(nextTimeStr) diff_hours=\(String(format: "%.2f", timeDiffHours))")
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return nextTime
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}
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/**
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* Schedule next notification after current one fires (rollover)
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*
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* Matches Android scheduleNextNotification() functionality
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* Implements multi-level duplicate prevention
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*
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* @param content Current notification content that just fired
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* @param storage Storage instance for duplicate checking
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* @param fetcher Optional fetcher for scheduling prefetch (Phase 2)
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* @return true if next notification was scheduled successfully
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*/
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func scheduleNextNotification(
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_ content: NotificationContent,
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storage: DailyNotificationStorage?,
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fetcher: Any? = nil
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) async -> Bool {
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let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
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let currentTimeStr = formatTime(currentTime)
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let currentScheduledTimeStr = formatTime(content.scheduledTime)
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NSLog("DNP-ROLLOVER: START id=\(content.id) current_time=\(currentTimeStr) scheduled_time=\(currentScheduledTimeStr)")
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print("DNP-ROLLOVER: START id=\(content.id) current_time=\(currentTimeStr) scheduled_time=\(currentScheduledTimeStr)")
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// Check 1: Rollover state tracking (prevent duplicate rollover attempts)
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if let storage = storage {
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let lastRolloverTime = await storage.getLastRolloverTime(for: content.id)
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// If rollover was processed recently (< 1 hour ago), skip
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if let lastTime = lastRolloverTime,
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(currentTime - lastTime) < (60 * 60 * 1000) {
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let lastTimeStr = formatTime(lastTime)
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let timeSinceRollover = (currentTime - lastTime) / 1000 / 60 // minutes
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NSLog("DNP-ROLLOVER: SKIP id=\(content.id) already_processed last_rollover=\(lastTimeStr) \(timeSinceRollover)min_ago")
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print("DNP-ROLLOVER: SKIP id=\(content.id) already_processed last_rollover=\(lastTimeStr) \(timeSinceRollover)min_ago")
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return false
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}
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}
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// Calculate next occurrence using DST-safe calculation
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let nextScheduledTime = calculateNextScheduledTime(content.scheduledTime)
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let nextScheduledTimeStr = formatTime(nextScheduledTime)
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let hoursUntilNext = Double(nextScheduledTime - currentTime) / 1000.0 / 60.0 / 60.0
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NSLog("DNP-ROLLOVER: CALCULATED id=\(content.id) next_time=\(nextScheduledTimeStr) hours_until=\(String(format: "%.2f", hoursUntilNext))")
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print("DNP-ROLLOVER: CALCULATED id=\(content.id) next_time=\(nextScheduledTimeStr) hours_until=\(String(format: "%.2f", hoursUntilNext))")
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// Check 2: Storage-level duplicate check (prevent duplicate notifications)
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if let storage = storage {
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let existingNotifications = storage.getAllNotifications()
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let toleranceMs: Int64 = 60 * 1000 // 1 minute tolerance for DST shifts
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for existing in existingNotifications {
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if abs(existing.scheduledTime - nextScheduledTime) <= toleranceMs {
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let existingTimeStr = formatTime(existing.scheduledTime)
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let timeDiffMs = abs(existing.scheduledTime - nextScheduledTime)
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NSLog("DNP-ROLLOVER: DUPLICATE_STORAGE id=\(content.id) existing_id=\(existing.id) existing_time=\(existingTimeStr) time_diff_ms=\(timeDiffMs)")
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print("DNP-ROLLOVER: DUPLICATE_STORAGE id=\(content.id) existing_id=\(existing.id) existing_time=\(existingTimeStr) time_diff_ms=\(timeDiffMs)")
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return false // Skip rescheduling to prevent duplicate
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}
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}
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}
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// Check 3: System-level duplicate check (query UNUserNotificationCenter)
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let pendingNotifications = await notificationCenter.pendingNotificationRequests()
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NSLog("DNP-ROLLOVER: CHECK_SYSTEM id=\(content.id) pending_count=\(pendingNotifications.count)")
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print("DNP-ROLLOVER: CHECK_SYSTEM id=\(content.id) pending_count=\(pendingNotifications.count)")
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for pending in pendingNotifications {
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if let trigger = pending.trigger as? UNCalendarNotificationTrigger,
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let nextDate = trigger.nextTriggerDate() {
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let pendingTime = Int64(nextDate.timeIntervalSince1970 * 1000)
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let toleranceMs: Int64 = 60 * 1000
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if abs(pendingTime - nextScheduledTime) <= toleranceMs {
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let pendingTimeStr = formatTime(pendingTime)
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let timeDiffMs = abs(pendingTime - nextScheduledTime)
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NSLog("DNP-ROLLOVER: DUPLICATE_SYSTEM id=\(content.id) system_pending_id=\(pending.identifier) pending_time=\(pendingTimeStr) time_diff_ms=\(timeDiffMs)")
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print("DNP-ROLLOVER: DUPLICATE_SYSTEM id=\(content.id) system_pending_id=\(pending.identifier) pending_time=\(pendingTimeStr) time_diff_ms=\(timeDiffMs)")
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return false
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}
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}
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}
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// Extract hour:minute from current scheduled time for logging
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let calendar = Calendar.current
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let scheduledDate = content.getScheduledTimeAsDate()
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let hour = calendar.component(.hour, from: scheduledDate)
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let minute = calendar.component(.minute, from: scheduledDate)
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// Create new notification content for next occurrence
|
|
// Note: Content will be refreshed by prefetch, but we need placeholder
|
|
let nextId = "daily_rollover_\(Int64(Date().timeIntervalSince1970 * 1000))"
|
|
let nextContent = NotificationContent(
|
|
id: nextId,
|
|
title: content.title, // Will be updated by prefetch
|
|
body: content.body, // Will be updated by prefetch
|
|
scheduledTime: nextScheduledTime,
|
|
fetchedAt: Int64(Date().timeIntervalSince1970 * 1000),
|
|
url: content.url,
|
|
payload: content.payload,
|
|
etag: content.etag
|
|
)
|
|
|
|
// Schedule the next notification
|
|
NSLog("DNP-ROLLOVER: SCHEDULING id=\(content.id) next_id=\(nextId) next_time=\(nextScheduledTimeStr)")
|
|
print("DNP-ROLLOVER: SCHEDULING id=\(content.id) next_id=\(nextId) next_time=\(nextScheduledTimeStr)")
|
|
|
|
let scheduled = await scheduleNotification(nextContent)
|
|
|
|
if scheduled {
|
|
// Verify the notification was actually scheduled
|
|
let pendingCount = await getPendingNotificationCount()
|
|
let isScheduled = await isNotificationScheduled(id: nextId)
|
|
|
|
NSLog("DNP-ROLLOVER: SUCCESS id=\(content.id) next_id=\(nextId) next_time=\(nextScheduledTimeStr) pending_count=\(pendingCount) is_scheduled=\(isScheduled)")
|
|
print("DNP-ROLLOVER: SUCCESS id=\(content.id) next_id=\(nextId) next_time=\(nextScheduledTimeStr) pending_count=\(pendingCount) is_scheduled=\(isScheduled)")
|
|
|
|
// Log time difference verification
|
|
let timeDiffMs = nextScheduledTime - content.scheduledTime
|
|
let timeDiffHours = Double(timeDiffMs) / 1000.0 / 60.0 / 60.0
|
|
NSLog("DNP-ROLLOVER: TIME_VERIFY id=\(content.id) current=\(currentScheduledTimeStr) next=\(nextScheduledTimeStr) diff_hours=\(String(format: "%.2f", timeDiffHours))")
|
|
print("DNP-ROLLOVER: TIME_VERIFY id=\(content.id) current=\(currentScheduledTimeStr) next=\(nextScheduledTimeStr) diff_hours=\(String(format: "%.2f", timeDiffHours))")
|
|
|
|
// Schedule background fetch for next notification (5 minutes before scheduled time)
|
|
// Note: DailyNotificationFetcher integration deferred to Phase 2
|
|
if fetcher != nil {
|
|
let fetchTime = nextScheduledTime - (5 * 60 * 1000) // 5 minutes before
|
|
let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
|
|
|
|
if fetchTime > currentTime {
|
|
// TODO: Phase 2 - Implement fetcher.scheduleFetch(fetchTime)
|
|
NSLog("DNP-ROLLOVER: PREFETCH_SCHEDULED id=\(content.id) next_fetch=\(fetchTime) next_notification=\(nextScheduledTime)")
|
|
print("DNP-ROLLOVER: PREFETCH_SCHEDULED id=\(content.id) next_fetch=\(fetchTime) next_notification=\(nextScheduledTime)")
|
|
} else {
|
|
// TODO: Phase 2 - Implement fetcher.scheduleImmediateFetch()
|
|
NSLog("DNP-ROLLOVER: PREFETCH_PAST id=\(content.id) fetch_time=\(fetchTime) current=\(currentTime)")
|
|
print("DNP-ROLLOVER: PREFETCH_PAST id=\(content.id) fetch_time=\(fetchTime) current=\(currentTime)")
|
|
}
|
|
} else {
|
|
NSLog("DNP-ROLLOVER: PREFETCH_SKIP id=\(content.id) fetcher_not_available")
|
|
print("DNP-ROLLOVER: PREFETCH_SKIP id=\(content.id) fetcher_not_available")
|
|
}
|
|
|
|
// Mark rollover as processed
|
|
let rolloverProcessedTime = Int64(Date().timeIntervalSince1970 * 1000)
|
|
await storage?.saveLastRolloverTime(for: content.id, time: rolloverProcessedTime)
|
|
|
|
NSLog("DNP-ROLLOVER: COMPLETE id=\(content.id) next_id=\(nextId) next_time=\(nextScheduledTimeStr)")
|
|
print("DNP-ROLLOVER: COMPLETE id=\(content.id) next_id=\(nextId) next_time=\(nextScheduledTimeStr)")
|
|
|
|
return true
|
|
} else {
|
|
NSLog("DNP-ROLLOVER: ERROR id=\(content.id) scheduling_failed next_time=\(nextScheduledTimeStr)")
|
|
print("DNP-ROLLOVER: ERROR id=\(content.id) scheduling_failed next_time=\(nextScheduledTimeStr)")
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
|