//
// AppSettings.swift
// IceGlass
//
// Copyright 2026 Rouslan Zenetl. All Rights Reserved.
//

import ServiceManagement

class AppSettings: @unchecked Sendable {
    private let logger = IceGlassLogger(
        subsystem: Bundle.main.bundleIdentifier ?? "dev.rzen.indie.IceGlass",
        category: "AppSettings"
    )

    static let shared = AppSettings()

    private enum UserDefaultsKey {
        static let launchAtLogin = "launchAtLogin"
        static let selectedTeam = "selectedTeam"
        static let displayOption = "displayOption"
    }

    /// Controls which days are shown in the menu and counted in the status bar
    enum DisplayOption: String, CaseIterable {
        case yesterdayTodayTomorrow = "yesterdayTodayTomorrow"
        case todayTomorrow = "todayTomorrow"
        case todayOnly = "todayOnly"

        var title: String {
            switch self {
            case .yesterdayTodayTomorrow: return "Yesterday / Today / Tomorrow"
            case .todayTomorrow: return "Today / Tomorrow"
            case .todayOnly: return "Today"
            }
        }

        /// Which date strings to include
        func includedDates() -> Set<String> {
            switch self {
            case .yesterdayTodayTomorrow:
                return [Date.yesterdayET, Date.todayET, Date.tomorrowET]
            case .todayTomorrow:
                return [Date.todayET, Date.tomorrowET]
            case .todayOnly:
                return [Date.todayET]
            }
        }
    }

    // Launch at login
    var launchAtLogin: Bool {
        get {
            UserDefaults.standard.bool(forKey: UserDefaultsKey.launchAtLogin)
        }
        set {
            UserDefaults.standard.set(newValue, forKey: UserDefaultsKey.launchAtLogin)
        }
    }

    // Selected team filter (nil = all teams)
    var selectedTeam: String? {
        get {
            UserDefaults.standard.string(forKey: UserDefaultsKey.selectedTeam)
        }
        set {
            UserDefaults.standard.set(newValue, forKey: UserDefaultsKey.selectedTeam)
        }
    }

    // Display option
    var displayOption: DisplayOption {
        get {
            if let rawValue = UserDefaults.standard.string(forKey: UserDefaultsKey.displayOption),
               let option = DisplayOption(rawValue: rawValue) {
                return option
            }
            return .yesterdayTodayTomorrow
        }
        set {
            UserDefaults.standard.set(newValue.rawValue, forKey: UserDefaultsKey.displayOption)
        }
    }

    func updateLoginItem(enabled: Bool) {
        do {
            if enabled {
                try SMAppService.mainApp.register()
            } else {
                try SMAppService.mainApp.unregister()
            }
        } catch {
            logger.error("Failed to \(enabled ? "enable" : "disable") launch at login: \(error.localizedDescription)")
        }
    }

    private init() {}
}