ios/AuthenticatorShared/UI/Platform/Settings/SettingsCoordinator.swift

import BitwardenSdk
import SwiftUI

// MARK: - SettingsCoordinator

/// A coordinator that manages navigation in the settings tab.
///
final class SettingsCoordinator: Coordinator, HasStackNavigator {
    // MARK: Types

    /// The module types required by this coordinator for creating child coordinators.
    typealias Module = TutorialModule

    typealias Services = HasErrorReporter
        & HasPasteboardService
        & HasStateService
        & HasTimeProvider

    // MARK: Private Properties

    /// The module used to create child coordinators.
    private let module: Module

    /// The services used by this coordinator.
    private let services: Services

    // MARK: Properties

    /// The stack navigator that is managed by this coordinator.
    private(set) weak var stackNavigator: StackNavigator?

    // MARK: Initialization

    /// Creates a new `SettingsCoordinator`.
    ///
    /// - Parameters:
    ///   - delegate: The delegate for this coordinator, used to notify when the user logs out.
    ///   - module: The module used to create child coordinators.
    ///   - services: The services used by this coordinator.
    ///   - stackNavigator: The stack navigator that is managed by this coordinator.
    ///
    init(
        module: Module,
        services: Services,
        stackNavigator: StackNavigator
    ) {
        self.module = module
        self.services = services
        self.stackNavigator = stackNavigator
    }

    // MARK: Methods

    func handleEvent(_ event: SettingsEvent, context: AnyObject?) async {}

    func navigate(to route: SettingsRoute, context: AnyObject?) {
        switch route {
        case .about:
            showAbout()
        case .appearance:
            showAppearance()
        case .dismiss:
            stackNavigator?.dismiss()
        case let .selectLanguage(currentLanguage: currentLanguage):
            showSelectLanguage(currentLanguage: currentLanguage, delegate: context as? SelectLanguageDelegate)
        case .settings:
            showSettings()
        case .tutorial:
            showTutorial()
        }
    }

    func start() {
        navigate(to: .settings)
    }

    // MARK: Private Methods

    /// Shows the about screen.
    ///
    private func showAbout() {
        let processor = AboutProcessor(
            coordinator: asAnyCoordinator(),
            services: services,
            state: AboutState()
        )

        let view = AboutView(store: Store(processor: processor))
        let viewController = UIHostingController(rootView: view)
        viewController.navigationItem.largeTitleDisplayMode = .never
        stackNavigator?.push(viewController, navigationTitle: Localizations.about)
    }

    /// Shows the appearance screen.
    ///
    private func showAppearance() {
        let processor = AppearanceProcessor(
            coordinator: asAnyCoordinator(),
            services: services,
            state: AppearanceState()
        )

        let view = AppearanceView(store: Store(processor: processor))
        let viewController = UIHostingController(rootView: view)
        viewController.navigationItem.largeTitleDisplayMode = .never
        stackNavigator?.push(viewController, navigationTitle: Localizations.appearance)
    }

    /// Shows the select language screen.
    ///
    private func showSelectLanguage(currentLanguage: LanguageOption, delegate: SelectLanguageDelegate?) {
        let processor = SelectLanguageProcessor(
            coordinator: asAnyCoordinator(),
            delegate: delegate,
            services: services,
            state: SelectLanguageState(currentLanguage: currentLanguage)
        )
        let view = SelectLanguageView(store: Store(processor: processor))
        let navController = UINavigationController(rootViewController: UIHostingController(rootView: view))
        stackNavigator?.present(navController)
    }

    /// Shows the settings screen.
    ///
    private func showSettings() {
        let processor = SettingsProcessor(
            coordinator: asAnyCoordinator(),
            state: SettingsState()
        )
        let view = SettingsView(store: Store(processor: processor))
        stackNavigator?.push(view)
    }

    /// Shows the welcome tutorial.
    ///
    private func showTutorial() {
        let navigationController = UINavigationController()
        let coordinator = module.makeTutorialCoordinator(
            stackNavigator: navigationController
        )
        coordinator.start()
        stackNavigator?.present(navigationController, overFullscreen: true)
    }
}