// NotificationSettings.swift
// Jarvis — persisted notification preferences: breaking alerts + morning/evening
// briefings with weather.

import Foundation

@MainActor
final class NotificationSettings: ObservableObject {
    static let shared = NotificationSettings()
    private let key = "jarvis_notifications_v1"

    // Master intent (actual OS permission tracked by NotificationManager).
    @Published var enabled: Bool { didSet { persist() } }

    // Breaking / new-story alerts
    @Published var breakingEnabled: Bool { didSet { persist() } }
    @Published var breakingMinSignal: Int { didSet { persist() } }

    // Morning briefing
    @Published var morningEnabled: Bool { didSet { persist() } }
    @Published var morningHour: Int { didSet { persist() } }
    @Published var morningMinute: Int { didSet { persist() } }

    // Evening briefing
    @Published var eveningEnabled: Bool { didSet { persist() } }
    @Published var eveningHour: Int { didSet { persist() } }
    @Published var eveningMinute: Int { didSet { persist() } }

    // Weather
    @Published var weatherEnabled: Bool { didSet { persist() } }
    @Published var locationName: String { didSet { persist() } }
    @Published var latitude: Double? { didSet { persist() } }
    @Published var longitude: Double? { didSet { persist() } }
    @Published var resolvedPlace: String? { didSet { persist() } }

    private struct Stored: Codable {
        var enabled, breakingEnabled, morningEnabled, eveningEnabled, weatherEnabled: Bool
        var breakingMinSignal, morningHour, morningMinute, eveningHour, eveningMinute: Int
        var locationName: String
        var latitude, longitude: Double?
        var resolvedPlace: String?
    }

    private init() {
        if let data = UserDefaults.standard.data(forKey: key),
           let s = try? JSONDecoder().decode(Stored.self, from: data) {
            enabled = s.enabled
            breakingEnabled = s.breakingEnabled; breakingMinSignal = s.breakingMinSignal
            morningEnabled = s.morningEnabled; morningHour = s.morningHour; morningMinute = s.morningMinute
            eveningEnabled = s.eveningEnabled; eveningHour = s.eveningHour; eveningMinute = s.eveningMinute
            weatherEnabled = s.weatherEnabled; locationName = s.locationName
            latitude = s.latitude; longitude = s.longitude; resolvedPlace = s.resolvedPlace
        } else {
            enabled = true
            breakingEnabled = true; breakingMinSignal = 65
            morningEnabled = true; morningHour = 7; morningMinute = 0
            eveningEnabled = true; eveningHour = 18; eveningMinute = 0
            weatherEnabled = true; locationName = ""
            latitude = nil; longitude = nil; resolvedPlace = nil
        }
    }

    private func persist() {
        let s = Stored(enabled: enabled, breakingEnabled: breakingEnabled,
                       morningEnabled: morningEnabled, eveningEnabled: eveningEnabled,
                       weatherEnabled: weatherEnabled, breakingMinSignal: breakingMinSignal,
                       morningHour: morningHour, morningMinute: morningMinute,
                       eveningHour: eveningHour, eveningMinute: eveningMinute,
                       locationName: locationName, latitude: latitude, longitude: longitude,
                       resolvedPlace: resolvedPlace)
        if let data = try? JSONEncoder().encode(s) { UserDefaults.standard.set(data, forKey: key) }
    }

    var hasResolvedLocation: Bool { latitude != nil && longitude != nil }
}