daily-notification-plugin/ios/Plugin/DailyNotificationPlugin.swift

//
//  DailyNotificationPlugin.swift
//  DailyNotificationPlugin
//
//  Created by Matthew Raymer on 2025-09-22
//  Copyright © 2025 TimeSafari. All rights reserved.
//

import Foundation
import Capacitor
import UserNotifications
import BackgroundTasks
import CoreData

/**
 * iOS implementation of Daily Notification Plugin
 * Implements BGTaskScheduler + UNUserNotificationCenter for dual scheduling
 * 
 * @author Matthew Raymer
 * @version 1.1.0
 * @created 2025-09-22 09:22:32 UTC
 */
@objc(DailyNotificationPlugin)
public class DailyNotificationPlugin: CAPPlugin {
    
    let notificationCenter = UNUserNotificationCenter.current()
    private let backgroundTaskScheduler = BGTaskScheduler.shared
    // Note: PersistenceController available for Phase 2+ CoreData integration if needed
    
    // Background task identifiers
    private let fetchTaskIdentifier = "com.timesafari.dailynotification.fetch"
    private let notifyTaskIdentifier = "com.timesafari.dailynotification.notify"
    
    // Phase 1: Storage and Scheduler components
    var storage: DailyNotificationStorage?
    var scheduler: DailyNotificationScheduler?
    
    // Phase 1: Concurrency actor for thread-safe state access
    @available(iOS 13.0, *)
    var stateActor: DailyNotificationStateActor?
    
    override public func load() {
        NSLog("DNP-DEBUG: DailyNotificationPlugin.load() called - Capacitor discovered the plugin!")
        super.load()
        setupBackgroundTasks()
        
        // Initialize Phase 1 components
        let documentsPath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
        let defaultPath = documentsPath.appendingPathComponent("daily_notifications.db").path
        let database = DailyNotificationDatabase(path: defaultPath)
        storage = DailyNotificationStorage(databasePath: database.getPath())
        scheduler = DailyNotificationScheduler()
        
        // Initialize state actor for thread-safe access
        if #available(iOS 13.0, *) {
            stateActor = DailyNotificationStateActor(
                database: database,
                storage: storage!
            )
        }
        
        NSLog("DNP-DEBUG: DailyNotificationPlugin.load() completed - initialization done")
        print("DNP-PLUGIN: Daily Notification Plugin loaded on iOS")
    }
    
    // MARK: - Configuration Methods
    
    /**
     * Configure the plugin with database and storage options
     * 
     * Matches Android configure() functionality:
     * - dbPath: Custom database path (optional)
     * - storage: "shared" or "tiered" (default: "tiered")
     * - ttlSeconds: Time-to-live for cached content (optional)
     * - prefetchLeadMinutes: Minutes before notification to prefetch (optional)
     * - maxNotificationsPerDay: Maximum notifications per day (optional)
     * - retentionDays: Days to retain notification history (optional)
     * - activeDidIntegration: Phase 1 activeDid configuration (optional)
     * 
     * @param call Plugin call containing configuration parameters
     */
    @objc func configure(_ call: CAPPluginCall) {
        guard let options = call.getObject("options") else {
            call.reject("Configuration options required")
            return
        }
        
        print("DNP-PLUGIN: Configuring plugin with new options")
        
        do {
            // Get configuration options
            let dbPath = options["dbPath"] as? String
            let storageMode = options["storage"] as? String ?? "tiered"
            let ttlSeconds = options["ttlSeconds"] as? Int
            let prefetchLeadMinutes = options["prefetchLeadMinutes"] as? Int
            let maxNotificationsPerDay = options["maxNotificationsPerDay"] as? Int
            let retentionDays = options["retentionDays"] as? Int
            
            // Phase 1: Process activeDidIntegration configuration (deferred to Phase 3)
            if let activeDidConfig = options["activeDidIntegration"] as? [String: Any] {
                print("DNP-PLUGIN: activeDidIntegration config received (Phase 3 feature)")
                // TODO: Implement activeDidIntegration configuration in Phase 3
            }
            
            // Update storage mode
            let useSharedStorage = storageMode == "shared"
            
            // Set database path
            let finalDbPath: String
            if let dbPath = dbPath, !dbPath.isEmpty {
                finalDbPath = dbPath
                print("DNP-PLUGIN: Database path set to: \(finalDbPath)")
            } else {
                // Use default database path
                let documentsPath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
                finalDbPath = documentsPath.appendingPathComponent("daily_notifications.db").path
                print("DNP-PLUGIN: Using default database path: \(finalDbPath)")
            }
            
            // Reinitialize storage with new database path if needed
            if let currentStorage = storage {
                // Check if path changed
                if currentStorage.getDatabasePath() != finalDbPath {
                    storage = DailyNotificationStorage(databasePath: finalDbPath)
                    print("DNP-PLUGIN: Storage reinitialized with new database path")
                }
            } else {
                storage = DailyNotificationStorage(databasePath: finalDbPath)
            }
            
            // Store configuration in storage
            storeConfiguration(
                ttlSeconds: ttlSeconds,
                prefetchLeadMinutes: prefetchLeadMinutes,
                maxNotificationsPerDay: maxNotificationsPerDay,
                retentionDays: retentionDays,
                storageMode: storageMode,
                dbPath: finalDbPath
            )
            
            print("DNP-PLUGIN: Plugin configuration completed successfully")
            call.resolve()
            
        } catch {
            print("DNP-PLUGIN: Error configuring plugin: \(error)")
            call.reject("Configuration failed: \(error.localizedDescription)")
        }
    }
    
    /**
     * Store configuration values
     * 
     * @param ttlSeconds TTL in seconds
     * @param prefetchLeadMinutes Prefetch lead time in minutes
     * @param maxNotificationsPerDay Maximum notifications per day
     * @param retentionDays Retention period in days
     * @param storageMode Storage mode ("shared" or "tiered")
     * @param dbPath Database path
     */
    private func storeConfiguration(
        ttlSeconds: Int?,
        prefetchLeadMinutes: Int?,
        maxNotificationsPerDay: Int?,
        retentionDays: Int?,
        storageMode: String,
        dbPath: String
    ) {
        var config: [String: Any] = [
            "storageMode": storageMode,
            "dbPath": dbPath
        ]
        
        if let ttlSeconds = ttlSeconds {
            config["ttlSeconds"] = ttlSeconds
        }
        
        if let prefetchLeadMinutes = prefetchLeadMinutes {
            config["prefetchLeadMinutes"] = prefetchLeadMinutes
        }
        
        if let maxNotificationsPerDay = maxNotificationsPerDay {
            config["maxNotificationsPerDay"] = maxNotificationsPerDay
        }
        
        if let retentionDays = retentionDays {
            config["retentionDays"] = retentionDays
        }
        
        storage?.saveSettings(config)
        print("DNP-PLUGIN: Configuration stored successfully")
    }
    
    // MARK: - Dual Scheduling Methods
    
    @objc func scheduleContentFetch(_ call: CAPPluginCall) {
        guard let config = call.getObject("config") else {
            call.reject("Content fetch config required")
            return
        }
        
        print("DNP-PLUGIN: Scheduling content fetch")
        
        do {
            try scheduleBackgroundFetch(config: config)
            call.resolve()
        } catch {
            print("DNP-PLUGIN: Failed to schedule content fetch: \(error)")
            call.reject("Content fetch scheduling failed: \(error.localizedDescription)")
        }
    }
    
    @objc func scheduleUserNotification(_ call: CAPPluginCall) {
        guard let config = call.getObject("config") else {
            call.reject("User notification config required")
            return
        }
        
        print("DNP-PLUGIN: Scheduling user notification")
        
        do {
            try scheduleUserNotification(config: config)
            call.resolve()
        } catch {
            print("DNP-PLUGIN: Failed to schedule user notification: \(error)")
            call.reject("User notification scheduling failed: \(error.localizedDescription)")
        }
    }
    
    @objc func scheduleDualNotification(_ call: CAPPluginCall) {
        guard let config = call.getObject("config"),
              let contentFetchConfig = config["contentFetch"] as? [String: Any],
              let userNotificationConfig = config["userNotification"] as? [String: Any] else {
            call.reject("Dual notification config required")
            return
        }
        
        print("DNP-PLUGIN: Scheduling dual notification")
        
        do {
            try scheduleBackgroundFetch(config: contentFetchConfig)
            try scheduleUserNotification(config: userNotificationConfig)
            call.resolve()
        } catch {
            print("DNP-PLUGIN: Failed to schedule dual notification: \(error)")
            call.reject("Dual notification scheduling failed: \(error.localizedDescription)")
        }
    }
    
    @objc func getDualScheduleStatus(_ call: CAPPluginCall) {
        Task {
            do {
                let status = try await getHealthStatus()
                DispatchQueue.main.async {
                    call.resolve(status)
                }
            } catch {
                DispatchQueue.main.async {
                    print("DNP-PLUGIN: Failed to get dual schedule status: \(error)")
                    call.reject("Status retrieval failed: \(error.localizedDescription)")
                }
            }
        }
    }
    
    /**
     * Get health status for dual scheduling system
     * 
     * @return Health status dictionary
     */
    private func getHealthStatus() async throws -> [String: Any] {
        guard let scheduler = scheduler else {
            throw NSError(domain: "DailyNotificationPlugin", code: -1, userInfo: [NSLocalizedDescriptionKey: "Scheduler not initialized"])
        }
        
        let pendingCount = await scheduler.getPendingNotificationCount()
        let isEnabled = await scheduler.checkPermissionStatus() == .authorized
        
        // Get last notification via state actor
        var lastNotification: NotificationContent?
        if #available(iOS 13.0, *) {
            if let stateActor = await self.stateActor {
                lastNotification = await stateActor.getLastNotification()
            } else {
                lastNotification = self.storage?.getLastNotification()
            }
        } else {
            lastNotification = self.storage?.getLastNotification()
        }
        
        return [
            "contentFetch": [
                "isEnabled": true,
                "isScheduled": pendingCount > 0,
                "lastFetchTime": lastNotification?.fetchedAt ?? 0,
                "nextFetchTime": 0,
                "pendingFetches": pendingCount
            ],
            "userNotification": [
                "isEnabled": isEnabled,
                "isScheduled": pendingCount > 0,
                "lastNotificationTime": lastNotification?.scheduledTime ?? 0,
                "nextNotificationTime": 0,
                "pendingNotifications": pendingCount
            ],
            "relationship": [
                "isLinked": true,
                "contentAvailable": lastNotification != nil,
                "lastLinkTime": lastNotification?.fetchedAt ?? 0
            ],
            "overall": [
                "isActive": isEnabled && pendingCount > 0,
                "lastActivity": lastNotification?.scheduledTime ?? 0,
                "errorCount": 0,
                "successRate": 1.0
            ]
        ]
    }
    
    // MARK: - Private Implementation Methods
    
    private func setupBackgroundTasks() {
        // Register background fetch task
        backgroundTaskScheduler.register(forTaskWithIdentifier: fetchTaskIdentifier, using: nil) { task in
            self.handleBackgroundFetch(task: task as! BGAppRefreshTask)
        }
        
        // Register background processing task
        backgroundTaskScheduler.register(forTaskWithIdentifier: notifyTaskIdentifier, using: nil) { task in
            self.handleBackgroundNotify(task: task as! BGProcessingTask)
        }
        
        // Phase 1: Check for missed BGTask on app launch
        checkForMissedBGTask()
    }
    
    /**
     * Handle background fetch task
     * 
     * Phase 1: Dummy fetcher - returns static content
     * Phase 3: Will be replaced with JWT-signed fetcher
     * 
     * @param task BGAppRefreshTask
     */
    private func handleBackgroundFetch(task: BGAppRefreshTask) {
        print("DNP-FETCH: Background fetch task started")
        
        // Set expiration handler
        task.expirationHandler = {
            print("DNP-FETCH: Background fetch task expired")
            task.setTaskCompleted(success: false)
        }
        
        // Phase 1: Dummy content fetch (no network)
        // TODO: Phase 3 - Replace with JWT-signed fetcher
        let dummyContent = NotificationContent(
            id: "dummy_\(Date().timeIntervalSince1970)",
            title: "Daily Update",
            body: "Your daily notification is ready",
            scheduledTime: Int64(Date().timeIntervalSince1970 * 1000) + (5 * 60 * 1000), // 5 min from now
            fetchedAt: Int64(Date().timeIntervalSince1970 * 1000),
            url: nil,
            payload: nil,
            etag: nil
        )
        
        // Save content to storage via state actor (thread-safe)
        Task {
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    await stateActor.saveNotificationContent(dummyContent)
                    
                    // Mark successful run
                    let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
                    await stateActor.saveLastSuccessfulRun(timestamp: currentTime)
                } else {
                    // Fallback to direct storage access
                    self.storage?.saveNotificationContent(dummyContent)
                    let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
                    self.storage?.saveLastSuccessfulRun(timestamp: currentTime)
                }
            } else {
                // Fallback for iOS < 13
                self.storage?.saveNotificationContent(dummyContent)
                let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
                self.storage?.saveLastSuccessfulRun(timestamp: currentTime)
            }
        }
        
        // Schedule next fetch
        // TODO: Calculate next fetch time based on notification schedule
        
        print("DNP-FETCH: Background fetch task completed successfully")
        task.setTaskCompleted(success: true)
    }
    
    /**
     * Handle background notification task
     * 
     * @param task BGProcessingTask
     */
    private func handleBackgroundNotify(task: BGProcessingTask) {
        print("DNP-NOTIFY: Background notify task started")
        
        // Set expiration handler
        task.expirationHandler = {
            print("DNP-NOTIFY: Background notify task expired")
            task.setTaskCompleted(success: false)
        }
        
        // Phase 1: Not used for single daily schedule
        // This will be used in Phase 2+ for rolling window maintenance
        
        print("DNP-NOTIFY: Background notify task completed")
        task.setTaskCompleted(success: true)
    }
    
    /**
     * Check for missed BGTask and reschedule if needed
     * 
     * Phase 1: BGTask Miss Detection
     * - Checks if BGTask was scheduled but not run within 15 min window
     * - Reschedules if missed
     */
    private func checkForMissedBGTask() {
        Task {
            var earliestBeginTimestamp: Int64?
            var lastSuccessfulRun: Int64?
            
            // Get BGTask tracking info via state actor (thread-safe)
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    earliestBeginTimestamp = await stateActor.getBGTaskEarliestBegin()
                    lastSuccessfulRun = await stateActor.getLastSuccessfulRun()
                } else {
                    // Fallback to direct storage access
                    earliestBeginTimestamp = self.storage?.getBGTaskEarliestBegin()
                    lastSuccessfulRun = self.storage?.getLastSuccessfulRun()
                }
            } else {
                // Fallback for iOS < 13
                earliestBeginTimestamp = self.storage?.getBGTaskEarliestBegin()
                lastSuccessfulRun = self.storage?.getLastSuccessfulRun()
            }
            
            guard let earliestBeginTime = earliestBeginTimestamp else {
                // No BGTask scheduled
                return
            }
            
            let currentTime = Int64(Date().timeIntervalSince1970 * 1000)
            let missWindow = Int64(15 * 60 * 1000) // 15 minutes in milliseconds
            
            // Check if task was missed (current time > earliestBeginTime + 15 min)
            if currentTime > earliestBeginTime + missWindow {
                // Check if there was a successful run
                if let lastRun = lastSuccessfulRun {
                    // If last successful run was after earliestBeginTime, task was not missed
                    if lastRun >= earliestBeginTime {
                        print("DNP-FETCH: BGTask completed successfully, no reschedule needed")
                        return
                    }
                }
                
                // Task was missed - reschedule
                print("DNP-FETCH: BGTask missed window; rescheduling")
                
                // Reschedule for 1 minute from now
                let rescheduleTime = currentTime + (1 * 60 * 1000) // 1 minute from now
                let rescheduleDate = Date(timeIntervalSince1970: Double(rescheduleTime) / 1000.0)
                
                let request = BGAppRefreshTaskRequest(identifier: fetchTaskIdentifier)
                request.earliestBeginDate = rescheduleDate
                
                do {
                    try backgroundTaskScheduler.submit(request)
                    
                    // Save rescheduled time via state actor (thread-safe)
                    if #available(iOS 13.0, *) {
                        if let stateActor = await self.stateActor {
                            await stateActor.saveBGTaskEarliestBegin(timestamp: rescheduleTime)
                        } else {
                            // Fallback to direct storage access
                            self.storage?.saveBGTaskEarliestBegin(timestamp: rescheduleTime)
                        }
                    } else {
                        // Fallback for iOS < 13
                        self.storage?.saveBGTaskEarliestBegin(timestamp: rescheduleTime)
                    }
                    
                    print("DNP-FETCH: BGTask rescheduled for \(rescheduleDate)")
                } catch {
                    print("DNP-FETCH: Failed to reschedule BGTask: \(error)")
                }
            }
        }
    }
    
    private func scheduleBackgroundFetch(config: [String: Any]) throws {
        let request = BGAppRefreshTaskRequest(identifier: fetchTaskIdentifier)
        
        // Calculate next run time (simplified - would use proper cron parsing in production)
        let nextRunTime = calculateNextRunTime(from: config["schedule"] as? String ?? "0 9 * * *")
        request.earliestBeginDate = Date(timeIntervalSinceNow: nextRunTime)
        
        try backgroundTaskScheduler.submit(request)
        print("DNP-FETCH-SCHEDULE: Background fetch scheduled for \(request.earliestBeginDate!)")
    }
    
    private func scheduleUserNotification(config: [String: Any]) throws {
        let content = UNMutableNotificationContent()
        content.title = config["title"] as? String ?? "Daily Notification"
        content.body = config["body"] as? String ?? "Your daily update is ready"
        content.sound = (config["sound"] as? Bool ?? true) ? .default : nil
        
        // Create trigger (simplified - would use proper cron parsing in production)
        let nextRunTime = calculateNextRunTime(from: config["schedule"] as? String ?? "0 9 * * *")
        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: nextRunTime, repeats: false)
        
        let request = UNNotificationRequest(
            identifier: "daily-notification-\(Date().timeIntervalSince1970)",
            content: content,
            trigger: trigger
        )
        
        notificationCenter.add(request) { error in
            if let error = error {
                print("DNP-NOTIFY-SCHEDULE: Failed to schedule notification: \(error)")
            } else {
                print("DNP-NOTIFY-SCHEDULE: Notification scheduled successfully")
            }
        }
    }
    
    private func calculateNextRunTime(from schedule: String) -> TimeInterval {
        // Simplified implementation - would use proper cron parsing in production
        // For now, return next day at 9 AM
        return 86400 // 24 hours
    }

    // MARK: - Static Daily Reminder Methods

    @objc func scheduleDailyReminder(_ call: CAPPluginCall) {
        guard let id = call.getString("id"),
              let title = call.getString("title"),
              let body = call.getString("body"),
              let time = call.getString("time") else {
            call.reject("Missing required parameters: id, title, body, time")
            return
        }

        let sound = call.getBool("sound", true)
        let vibration = call.getBool("vibration", true)
        let priority = call.getString("priority", "normal")
        let repeatDaily = call.getBool("repeatDaily", true)
        let timezone = call.getString("timezone")

        print("DNP-REMINDER: Scheduling daily reminder: \(id)")

        // Parse time (HH:mm format)
        let timeComponents = time.components(separatedBy: ":")
        guard timeComponents.count == 2,
              let hour = Int(timeComponents[0]),
              let minute = Int(timeComponents[1]),
              hour >= 0 && hour <= 23,
              minute >= 0 && minute <= 59 else {
            call.reject("Invalid time format. Use HH:mm (e.g., 09:00)")
            return
        }

        // Create notification content
        let content = UNMutableNotificationContent()
        content.title = title
        content.body = body
        content.sound = sound ? .default : nil
        content.categoryIdentifier = "DAILY_REMINDER"

        // Set priority
        if #available(iOS 15.0, *) {
            switch priority {
            case "high":
                content.interruptionLevel = .critical
            case "low":
                content.interruptionLevel = .passive
            default:
                content.interruptionLevel = .active
            }
        }

        // Create date components for daily trigger
        var dateComponents = DateComponents()
        dateComponents.hour = hour
        dateComponents.minute = minute

        let trigger = UNCalendarNotificationTrigger(
            dateMatching: dateComponents,
            repeats: repeatDaily
        )

        let request = UNNotificationRequest(
            identifier: "reminder_\(id)",
            content: content,
            trigger: trigger
        )

        // Store reminder in UserDefaults
        storeReminderInUserDefaults(
            id: id,
            title: title,
            body: body,
            time: time,
            sound: sound,
            vibration: vibration,
            priority: priority,
            repeatDaily: repeatDaily,
            timezone: timezone
        )

        // Schedule the notification
        notificationCenter.add(request) { error in
            DispatchQueue.main.async {
                if let error = error {
                    print("DNP-REMINDER: Failed to schedule reminder: \(error)")
                    call.reject("Failed to schedule daily reminder: \(error.localizedDescription)")
                } else {
                    print("DNP-REMINDER: Daily reminder scheduled successfully: \(id)")
                    call.resolve()
                }
            }
        }
    }

    @objc func cancelDailyReminder(_ call: CAPPluginCall) {
        guard let reminderId = call.getString("reminderId") else {
            call.reject("Missing reminderId parameter")
            return
        }

        print("DNP-REMINDER: Cancelling daily reminder: \(reminderId)")

        // Cancel the notification
        notificationCenter.removePendingNotificationRequests(withIdentifiers: ["reminder_\(reminderId)"])

        // Remove from UserDefaults
        removeReminderFromUserDefaults(id: reminderId)

        call.resolve()
    }

    @objc func getScheduledReminders(_ call: CAPPluginCall) {
        print("DNP-REMINDER: Getting scheduled reminders")

        // Get pending notifications
        notificationCenter.getPendingNotificationRequests { requests in
            let reminderRequests = requests.filter { $0.identifier.hasPrefix("reminder_") }

            // Get stored reminder data from UserDefaults
            let reminders = self.getRemindersFromUserDefaults()

            var result: [[String: Any]] = []
            for reminder in reminders {
                let isScheduled = reminderRequests.contains { $0.identifier == "reminder_\(reminder["id"] as! String)" }
                var reminderInfo = reminder
                reminderInfo["isScheduled"] = isScheduled
                result.append(reminderInfo)
            }

            DispatchQueue.main.async {
                call.resolve(["reminders": result])
            }
        }
    }

    @objc func updateDailyReminder(_ call: CAPPluginCall) {
        guard let reminderId = call.getString("reminderId") else {
            call.reject("Missing reminderId parameter")
            return
        }

        print("DNP-REMINDER: Updating daily reminder: \(reminderId)")

        // Cancel existing reminder
        notificationCenter.removePendingNotificationRequests(withIdentifiers: ["reminder_\(reminderId)"])

        // Update in UserDefaults
        let title = call.getString("title")
        let body = call.getString("body")
        let time = call.getString("time")
        let sound = call.getBool("sound")
        let vibration = call.getBool("vibration")
        let priority = call.getString("priority")
        let repeatDaily = call.getBool("repeatDaily")
        let timezone = call.getString("timezone")

        updateReminderInUserDefaults(
            id: reminderId,
            title: title,
            body: body,
            time: time,
            sound: sound,
            vibration: vibration,
            priority: priority,
            repeatDaily: repeatDaily,
            timezone: timezone
        )

        // Reschedule with new settings if all required fields are provided
        if let title = title, let body = body, let time = time {
            // Parse time
            let timeComponents = time.components(separatedBy: ":")
            guard timeComponents.count == 2,
                  let hour = Int(timeComponents[0]),
                  let minute = Int(timeComponents[1]) else {
                call.reject("Invalid time format")
                return
            }

            // Create new notification content
            let content = UNMutableNotificationContent()
            content.title = title
            content.body = body
            content.sound = (sound ?? true) ? .default : nil
            content.categoryIdentifier = "DAILY_REMINDER"

            // Set priority
            let finalPriority = priority ?? "normal"
            if #available(iOS 15.0, *) {
                switch finalPriority {
                case "high":
                    content.interruptionLevel = .critical
                case "low":
                    content.interruptionLevel = .passive
                default:
                    content.interruptionLevel = .active
                }
            }

            // Create date components for daily trigger
            var dateComponents = DateComponents()
            dateComponents.hour = hour
            dateComponents.minute = minute

            let trigger = UNCalendarNotificationTrigger(
                dateMatching: dateComponents,
                repeats: repeatDaily ?? true
            )

            let request = UNNotificationRequest(
                identifier: "reminder_\(reminderId)",
                content: content,
                trigger: trigger
            )

            // Schedule the updated notification
            notificationCenter.add(request) { error in
                DispatchQueue.main.async {
                    if let error = error {
                        call.reject("Failed to reschedule updated reminder: \(error.localizedDescription)")
                    } else {
                        call.resolve()
                    }
                }
            }
        } else {
            call.resolve()
        }
    }

    // MARK: - Helper Methods for Reminder Storage

    private func storeReminderInUserDefaults(
        id: String,
        title: String,
        body: String,
        time: String,
        sound: Bool,
        vibration: Bool,
        priority: String,
        repeatDaily: Bool,
        timezone: String?
    ) {
        let reminderData: [String: Any] = [
            "id": id,
            "title": title,
            "body": body,
            "time": time,
            "sound": sound,
            "vibration": vibration,
            "priority": priority,
            "repeatDaily": repeatDaily,
            "timezone": timezone ?? "",
            "createdAt": Date().timeIntervalSince1970,
            "lastTriggered": 0
        ]

        var reminders = UserDefaults.standard.array(forKey: "daily_reminders") as? [[String: Any]] ?? []
        reminders.append(reminderData)
        UserDefaults.standard.set(reminders, forKey: "daily_reminders")

        print("DNP-REMINDER: Reminder stored: \(id)")
    }

    private func removeReminderFromUserDefaults(id: String) {
        var reminders = UserDefaults.standard.array(forKey: "daily_reminders") as? [[String: Any]] ?? []
        reminders.removeAll { ($0["id"] as? String) == id }
        UserDefaults.standard.set(reminders, forKey: "daily_reminders")

        print("DNP-REMINDER: Reminder removed: \(id)")
    }

    private func getRemindersFromUserDefaults() -> [[String: Any]] {
        return UserDefaults.standard.array(forKey: "daily_reminders") as? [[String: Any]] ?? []
    }

    private func updateReminderInUserDefaults(
        id: String,
        title: String?,
        body: String?,
        time: String?,
        sound: Bool?,
        vibration: Bool?,
        priority: String?,
        repeatDaily: Bool?,
        timezone: String?
    ) {
        var reminders = UserDefaults.standard.array(forKey: "daily_reminders") as? [[String: Any]] ?? []
        
        for i in 0..<reminders.count {
            if reminders[i]["id"] as? String == id {
                if let title = title { reminders[i]["title"] = title }
                if let body = body { reminders[i]["body"] = body }
                if let time = time { reminders[i]["time"] = time }
                if let sound = sound { reminders[i]["sound"] = sound }
                if let vibration = vibration { reminders[i]["vibration"] = vibration }
                if let priority = priority { reminders[i]["priority"] = priority }
                if let repeatDaily = repeatDaily { reminders[i]["repeatDaily"] = repeatDaily }
                if let timezone = timezone { reminders[i]["timezone"] = timezone }
                break
            }
        }
        
        UserDefaults.standard.set(reminders, forKey: "daily_reminders")
        print("DNP-REMINDER: Reminder updated: \(id)")
    }
    
    // MARK: - Phase 1: Core Notification Methods
    
    /**
     * Schedule a daily notification with the specified options
     * 
     * Phase 1: Single daily schedule (one prefetch 5 min before + one notification)
     * 
     * @param call Plugin call containing notification parameters
     */
    @objc func scheduleDailyNotification(_ call: CAPPluginCall) {
        guard let scheduler = scheduler else {
            let error = DailyNotificationErrorCodes.createErrorResponse(
                code: DailyNotificationErrorCodes.PLUGIN_NOT_INITIALIZED,
                message: "Plugin not initialized"
            )
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        guard let options = call.getObject("options") else {
            let error = DailyNotificationErrorCodes.missingParameter("options")
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        guard let time = options["time"] as? String, !time.isEmpty else {
            let error = DailyNotificationErrorCodes.missingParameter("time")
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        // Parse time (HH:mm format)
        let timeComponents = time.components(separatedBy: ":")
        guard timeComponents.count == 2,
              let hour = Int(timeComponents[0]),
              let minute = Int(timeComponents[1]),
              hour >= 0 && hour <= 23,
              minute >= 0 && minute <= 59 else {
            let error = DailyNotificationErrorCodes.invalidTimeFormat()
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        // Extract other parameters
        let title = options["title"] as? String ?? "Daily Update"
        let body = options["body"] as? String ?? "Your daily notification is ready"
        let sound = options["sound"] as? Bool ?? true
        let url = options["url"] as? String
        
        // Calculate scheduled time (next occurrence at specified hour:minute)
        let scheduledTime = calculateNextScheduledTime(hour: hour, minute: minute)
        let fetchedAt = Int64(Date().timeIntervalSince1970 * 1000) // Current time in milliseconds
        
        // Create notification content
        let content = NotificationContent(
            id: "daily_\(Date().timeIntervalSince1970)",
            title: title,
            body: body,
            scheduledTime: scheduledTime,
            fetchedAt: fetchedAt,
            url: url,
            payload: nil,
            etag: nil
        )
        
        // Store notification content via state actor (thread-safe)
        Task {
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    await stateActor.saveNotificationContent(content)
                } else {
                    // Fallback to direct storage access
                    self.storage?.saveNotificationContent(content)
                }
            } else {
                // Fallback for iOS < 13
                self.storage?.saveNotificationContent(content)
            }
            
            // Schedule notification
            let scheduled = await scheduler.scheduleNotification(content)
            
            if scheduled {
                // Schedule background fetch 5 minutes before notification time
                self.scheduleBackgroundFetch(scheduledTime: scheduledTime)
                
                DispatchQueue.main.async {
                    print("DNP-PLUGIN: Daily notification scheduled successfully")
                    call.resolve()
                }
            } else {
                DispatchQueue.main.async {
                    let error = DailyNotificationErrorCodes.createErrorResponse(
                        code: DailyNotificationErrorCodes.SCHEDULING_FAILED,
                        message: "Failed to schedule notification"
                    )
                    let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
                }
            }
        }
    }
    
    /**
     * Get the last notification that was delivered
     * 
     * @param call Plugin call
     */
    @objc func getLastNotification(_ call: CAPPluginCall) {
        Task {
            var lastNotification: NotificationContent?
            
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    lastNotification = await stateActor.getLastNotification()
                } else {
                    // Fallback to direct storage access
                    lastNotification = self.storage?.getLastNotification()
                }
            } else {
                // Fallback for iOS < 13
                lastNotification = self.storage?.getLastNotification()
            }
            
            DispatchQueue.main.async {
                if let notification = lastNotification {
                    let result: [String: Any] = [
                        "id": notification.id,
                        "title": notification.title ?? "",
                        "body": notification.body ?? "",
                        "timestamp": notification.scheduledTime,
                        "url": notification.url ?? ""
                    ]
                    call.resolve(result)
                } else {
                    call.resolve([:])
                }
            }
        }
    }
    
    /**
     * Cancel all scheduled notifications
     * 
     * @param call Plugin call
     */
    @objc func cancelAllNotifications(_ call: CAPPluginCall) {
        guard let scheduler = scheduler else {
            let error = DailyNotificationErrorCodes.createErrorResponse(
                code: DailyNotificationErrorCodes.PLUGIN_NOT_INITIALIZED,
                message: "Plugin not initialized"
            )
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        Task {
            await scheduler.cancelAllNotifications()
            
            // Clear notifications via state actor (thread-safe)
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    await stateActor.clearAllNotifications()
                } else {
                    // Fallback to direct storage access
                    self.storage?.clearAllNotifications()
                }
            } else {
                // Fallback for iOS < 13
                self.storage?.clearAllNotifications()
            }
            
            DispatchQueue.main.async {
                print("DNP-PLUGIN: All notifications cancelled successfully")
                call.resolve()
            }
        }
    }
    
    /**
     * Get the current status of notifications
     * 
     * @param call Plugin call
     */
    @objc func getNotificationStatus(_ call: CAPPluginCall) {
        guard let scheduler = scheduler else {
            let error = DailyNotificationErrorCodes.createErrorResponse(
                code: DailyNotificationErrorCodes.PLUGIN_NOT_INITIALIZED,
                message: "Plugin not initialized"
            )
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        Task {
            let isEnabled = await scheduler.checkPermissionStatus() == .authorized
            let pendingCount = await scheduler.getPendingNotificationCount()
            
            // Get last notification via state actor (thread-safe)
            var lastNotification: NotificationContent?
            var settings: [String: Any] = [:]
            
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    lastNotification = await stateActor.getLastNotification()
                    settings = await stateActor.getSettings()
                } else {
                    // Fallback to direct storage access
                    lastNotification = self.storage?.getLastNotification()
                    settings = self.storage?.getSettings() ?? [:]
                }
            } else {
                // Fallback for iOS < 13
                lastNotification = self.storage?.getLastNotification()
                settings = self.storage?.getSettings() ?? [:]
            }
            
            // Calculate next notification time
            let nextNotificationTime = await scheduler.getNextNotificationTime() ?? 0
            
            var result: [String: Any] = [
                "isEnabled": isEnabled,
                "isScheduled": pendingCount > 0,
                "lastNotificationTime": lastNotification?.scheduledTime ?? 0,
                "nextNotificationTime": nextNotificationTime,
                "pending": pendingCount,
                "settings": settings
            ]
            
            DispatchQueue.main.async {
                call.resolve(result)
            }
        }
    }
    
    /**
     * Check permission status
     * Returns boolean flags for each permission type
     * 
     * @param call Plugin call
     */
    @objc func checkPermissionStatus(_ call: CAPPluginCall) {
        NSLog("DNP-PLUGIN: checkPermissionStatus called - thread: %@", Thread.isMainThread ? "main" : "background")
        
        // Ensure scheduler is initialized (should be initialized in load(), but check anyway)
        if scheduler == nil {
            NSLog("DNP-PLUGIN: Scheduler not initialized, initializing now...")
            scheduler = DailyNotificationScheduler()
        }
        
        guard let scheduler = scheduler else {
            let error = DailyNotificationErrorCodes.createErrorResponse(
                code: DailyNotificationErrorCodes.PLUGIN_NOT_INITIALIZED,
                message: "Plugin not initialized"
            )
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            NSLog("DNP-PLUGIN: checkPermissionStatus failed - plugin not initialized")
            call.reject(errorMessage, errorCode)
            return
        }
        
        // Use Task without @MainActor, then dispatch to main queue for call.resolve
        Task {
            do {
                NSLog("DNP-PLUGIN: Task started - thread: %@", Thread.isMainThread ? "main" : "background")
                NSLog("DNP-PLUGIN: Calling scheduler.checkPermissionStatus()...")
                
                // Check notification permission status
                let notificationStatus = await scheduler.checkPermissionStatus()
                NSLog("DNP-PLUGIN: Got notification status: %d", notificationStatus.rawValue)
                
                let notificationsEnabled = notificationStatus == .authorized
                
                NSLog("DNP-PLUGIN: Notification status: %d, enabled: %@", notificationStatus.rawValue, notificationsEnabled ? "YES" : "NO")
                
                // iOS doesn't have exact alarms like Android, but we can check if notifications are authorized
                // For iOS, "exact alarm" equivalent is having authorized notifications
                let exactAlarmEnabled = notificationsEnabled
                
                // iOS doesn't have wake locks, but we can check Background App Refresh
                // Note: Background App Refresh status requires checking system settings
                // For now, we'll assume it's enabled if notifications are enabled
                // Phase 2: Add proper Background App Refresh status check
                let wakeLockEnabled = notificationsEnabled
                
                // All permissions granted if notifications are authorized
                let allPermissionsGranted = notificationsEnabled
                
                let result: [String: Any] = [
                    "notificationsEnabled": notificationsEnabled,
                    "exactAlarmEnabled": exactAlarmEnabled,
                    "wakeLockEnabled": wakeLockEnabled,
                    "allPermissionsGranted": allPermissionsGranted
                ]
                
                NSLog("DNP-PLUGIN: checkPermissionStatus result: %@", result)
                NSLog("DNP-PLUGIN: About to call resolve - thread: %@", Thread.isMainThread ? "main" : "background")
                
                // Dispatch to main queue for call.resolve (required by Capacitor)
                DispatchQueue.main.async {
                    NSLog("DNP-PLUGIN: On main queue, calling resolve")
                    call.resolve(result)
                    NSLog("DNP-PLUGIN: Call resolved successfully")
                }
            } catch {
                NSLog("DNP-PLUGIN: checkPermissionStatus error: %@", error.localizedDescription)
                let errorMessage = "Failed to check permission status: \(error.localizedDescription)"
                // Dispatch to main queue for call.reject (required by Capacitor)
                DispatchQueue.main.async {
                    call.reject(errorMessage, "permission_check_failed")
                }
            }
        }
        
        NSLog("DNP-PLUGIN: Task created and returned")
    }
    
    /**
     * Request notification permissions
     * Shows system permission dialog if permissions haven't been determined yet
     * 
     * @param call Plugin call
     */
    @objc func requestNotificationPermissions(_ call: CAPPluginCall) {
        NSLog("DNP-PLUGIN: requestNotificationPermissions called - thread: %@", Thread.isMainThread ? "main" : "background")
        
        // Ensure scheduler is initialized
        if scheduler == nil {
            NSLog("DNP-PLUGIN: Scheduler not initialized, initializing now...")
            scheduler = DailyNotificationScheduler()
        }
        
        guard let scheduler = scheduler else {
            let error = DailyNotificationErrorCodes.createErrorResponse(
                code: DailyNotificationErrorCodes.PLUGIN_NOT_INITIALIZED,
                message: "Plugin not initialized"
            )
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            NSLog("DNP-PLUGIN: requestNotificationPermissions failed - plugin not initialized")
            call.reject(errorMessage, errorCode)
            return
        }
        
        // Use Task without @MainActor, then dispatch to main queue for call.resolve
        Task {
            do {
                NSLog("DNP-PLUGIN: Task started for requestNotificationPermissions")
                
                // First check current status
                let currentStatus = await scheduler.checkPermissionStatus()
                NSLog("DNP-PLUGIN: Current permission status: %d", currentStatus.rawValue)
                
                // If already authorized, return success immediately
                if currentStatus == .authorized {
                    NSLog("DNP-PLUGIN: Permissions already granted")
                    let result: [String: Any] = [
                        "granted": true,
                        "status": "authorized"
                    ]
                    DispatchQueue.main.async {
                        call.resolve(result)
                    }
                    return
                }
                
                // If denied, we can't request again (user must go to Settings)
                if currentStatus == .denied {
                    NSLog("DNP-PLUGIN: Permissions denied - user must enable in Settings")
                    let error = DailyNotificationErrorCodes.createErrorResponse(
                        code: DailyNotificationErrorCodes.NOTIFICATIONS_DENIED,
                        message: "Notification permissions denied. Please enable in Settings."
                    )
                    let errorMessage = error["message"] as? String ?? "Permissions denied"
                    let errorCode = error["error"] as? String ?? "notifications_denied"
                    DispatchQueue.main.async {
                        call.reject(errorMessage, errorCode)
                    }
                    return
                }
                
                // Request permissions (will show system dialog if .notDetermined)
                NSLog("DNP-PLUGIN: Requesting permissions...")
                let granted = await scheduler.requestPermissions()
                NSLog("DNP-PLUGIN: Permission request result: %@", granted ? "granted" : "denied")
                
                // Get updated status
                let newStatus = await scheduler.checkPermissionStatus()
                
                let result: [String: Any] = [
                    "granted": granted,
                    "status": granted ? "authorized" : "denied",
                    "previousStatus": currentStatus.rawValue,
                    "newStatus": newStatus.rawValue
                ]
                
                NSLog("DNP-PLUGIN: requestNotificationPermissions result: %@", result)
                
                DispatchQueue.main.async {
                    call.resolve(result)
                }
            } catch {
                NSLog("DNP-PLUGIN: requestNotificationPermissions error: %@", error.localizedDescription)
                let errorMessage = "Failed to request permissions: \(error.localizedDescription)"
                DispatchQueue.main.async {
                    call.reject(errorMessage, "permission_request_failed")
                }
            }
        }
    }
    
    /**
     * Update notification settings
     * 
     * @param call Plugin call containing new settings
     */
    @objc func updateSettings(_ call: CAPPluginCall) {
        guard let settings = call.getObject("settings") else {
            let error = DailyNotificationErrorCodes.missingParameter("settings")
            let errorMessage = error["message"] as? String ?? "Unknown error"
            let errorCode = error["error"] as? String ?? "unknown_error"
            call.reject(errorMessage, errorCode)
            return
        }
        
        Task {
            // Save settings via state actor (thread-safe)
            if #available(iOS 13.0, *) {
                if let stateActor = await self.stateActor {
                    await stateActor.saveSettings(settings)
                } else {
                    // Fallback to direct storage access
                    self.storage?.saveSettings(settings)
                }
            } else {
                // Fallback for iOS < 13
                self.storage?.saveSettings(settings)
            }
            
            DispatchQueue.main.async {
                print("DNP-PLUGIN: Settings updated successfully")
                call.resolve()
            }
        }
    }
    
    // MARK: - Phase 1: Helper Methods
    
    /**
     * Calculate next scheduled time for given hour and minute
     * 
     * Uses scheduler's calculateNextOccurrence for consistency
     * 
     * @param hour Hour (0-23)
     * @param minute Minute (0-59)
     * @return Timestamp in milliseconds
     */
    private func calculateNextScheduledTime(hour: Int, minute: Int) -> Int64 {
        guard let scheduler = scheduler else {
            // Fallback calculation if scheduler not available
            let calendar = Calendar.current
            let now = Date()
            
            var components = calendar.dateComponents([.year, .month, .day], from: now)
            components.hour = hour
            components.minute = minute
            components.second = 0
            
            var scheduledDate = calendar.date(from: components) ?? now
            
            // If scheduled time has passed today, schedule for tomorrow
            if scheduledDate <= now {
                scheduledDate = calendar.date(byAdding: .day, value: 1, to: scheduledDate) ?? scheduledDate
            }
            
            return Int64(scheduledDate.timeIntervalSince1970 * 1000)
        }
        
        return scheduler.calculateNextOccurrence(hour: hour, minute: minute)
    }
    
    /**
     * Schedule background fetch 5 minutes before notification time
     * 
     * @param scheduledTime Notification scheduled time in milliseconds
     */
    private func scheduleBackgroundFetch(scheduledTime: Int64) {
        // Calculate fetch time (5 minutes before notification)
        let fetchTime = scheduledTime - (5 * 60 * 1000) // 5 minutes in milliseconds
        let fetchDate = Date(timeIntervalSince1970: Double(fetchTime) / 1000.0)
        
        // Schedule BGTaskScheduler task
        let request = BGAppRefreshTaskRequest(identifier: fetchTaskIdentifier)
        request.earliestBeginDate = fetchDate
        
        do {
            try backgroundTaskScheduler.submit(request)
            
            // Store earliest begin date for miss detection via state actor (thread-safe)
            Task {
                if #available(iOS 13.0, *) {
                    if let stateActor = await self.stateActor {
                        await stateActor.saveBGTaskEarliestBegin(timestamp: fetchTime)
                    } else {
                        // Fallback to direct storage access
                        self.storage?.saveBGTaskEarliestBegin(timestamp: fetchTime)
                    }
                } else {
                    // Fallback for iOS < 13
                    self.storage?.saveBGTaskEarliestBegin(timestamp: fetchTime)
                }
            }
            
            print("DNP-FETCH-SCHEDULE: Background fetch scheduled for \(fetchDate)")
        } catch {
            print("DNP-FETCH-SCHEDULE: Failed to schedule background fetch: \(error)")
        }
    }
}

// MARK: - CAPBridgedPlugin Conformance
// This extension makes the plugin conform to CAPBridgedPlugin protocol
// which is required for Capacitor to discover and register the plugin
@objc extension DailyNotificationPlugin: CAPBridgedPlugin {
    @objc public var identifier: String {
        return "com.timesafari.dailynotification"
    }
    
    @objc public var jsName: String {
        return "DailyNotification"
    }
    
    @objc public var pluginMethods: [CAPPluginMethod] {
        var methods: [CAPPluginMethod] = []
        
        // Core methods
        methods.append(CAPPluginMethod(name: "configure", returnType: CAPPluginReturnNone))
        methods.append(CAPPluginMethod(name: "scheduleDailyNotification", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "getLastNotification", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "cancelAllNotifications", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "getNotificationStatus", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "updateSettings", returnType: CAPPluginReturnPromise))
        
        // Permission methods
        methods.append(CAPPluginMethod(name: "checkPermissionStatus", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "requestNotificationPermissions", returnType: CAPPluginReturnPromise))
        
        // Reminder methods
        methods.append(CAPPluginMethod(name: "scheduleDailyReminder", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "cancelDailyReminder", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "getScheduledReminders", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "updateDailyReminder", returnType: CAPPluginReturnPromise))
        
        // Dual scheduling methods
        methods.append(CAPPluginMethod(name: "scheduleContentFetch", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "scheduleUserNotification", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "scheduleDualNotification", returnType: CAPPluginReturnPromise))
        methods.append(CAPPluginMethod(name: "getDualScheduleStatus", returnType: CAPPluginReturnPromise))
        
        return methods
    }
}