// File created from ScreenTemplate
// $ createScreen.sh Settings/Notifications NotificationSettings
/*
 Copyright 2021 New Vector Ltd
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
 http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

import Foundation
import SwiftUI

@available(iOS 14.0, *)
final class NotificationSettingsCoordinator: NotificationSettingsCoordinatorType {
    
    // MARK: - Properties
    
    // MARK: Private
    
    private let session: MXSession
    private var notificationSettingsViewModel: NotificationSettingsViewModelType
    private let notificationSettingsViewController: UIViewController
    
    // MARK: Public

    // Must be used only internally
    var childCoordinators: [Coordinator] = []
    
    weak var delegate: NotificationSettingsCoordinatorDelegate?
    
    // MARK: - Setup
    
    init(session: MXSession, screen: NotificationSettingsScreen) {
        self.session = session
        let notificationSettingsService = NotificationSettingsService(session: session)
        let viewModel = NotificationSettingsViewModel(notificationSettingsService: notificationSettingsService, ruleIds: screen.pushRules)
        let viewController: UIViewController
        switch screen {
        case .defaultNotifications:
            viewController = VectorHostingController(rootView: DefaultNotificationSettings(viewModel: viewModel))
        case .mentionsAndKeywords:
            viewController = VectorHostingController(rootView: MentionsAndKeywordNotificationSettings(viewModel: viewModel))
        case .other:
            viewController = VectorHostingController(rootView: OtherNotificationSettings(viewModel: viewModel))
        }
        self.notificationSettingsViewModel = viewModel
        self.notificationSettingsViewController = viewController
    }
    
    // MARK: - Public methods
    
    func start() {            
        self.notificationSettingsViewModel.coordinatorDelegate = self
    }
    
    func toPresentable() -> UIViewController {
        return self.notificationSettingsViewController
    }
}

// MARK: - NotificationSettingsViewModelCoordinatorDelegate
@available(iOS 14.0, *)
extension NotificationSettingsCoordinator: NotificationSettingsViewModelCoordinatorDelegate {
    func notificationSettingsViewModelDidComplete(_ viewModel: NotificationSettingsViewModelType) {
        self.delegate?.notificationSettingsCoordinatorDidComplete(self)
    }
}