import SwiftUI

extension Settings {
    class ViewModel<Provider>: BaseViewModel<Provider>, ObservableObject where Provider: SettingsProvider {
        @Injected() private var settingsManager: SettingsManager!
        @Injected() private var broadcaster: Broadcaster!
        @Published var closedLoop = false

        @Published var debugOptions = false

        private(set) var appVersion = ""
        private(set) var buildNumber = ""

        override func subscribe() {
            closedLoop = settingsManager.settings.closedLoop
            debugOptions = settingsManager.settings.debugOptions ?? false

            $closedLoop
                .removeDuplicates()
                .sink { [weak self] value in
                    self?.settingsManager.settings.closedLoop = value
                }.store(in: &lifetime)

            broadcaster.register(SettingsObserver.self, observer: self)

            appVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "Unknown"
            buildNumber = Bundle.main.infoDictionary?["CFBundleVersion"] as? String ?? "Unknown"
        }
    }
}

extension Settings.ViewModel: SettingsObserver {
    func settingsDidChange(_ settings: FreeAPSSettings) {
        closedLoop = settings.closedLoop
        debugOptions = settings.debugOptions ?? false
    }
}