element-ios/RiotSwiftUI/Modules/AnalyticsPrompt/Coordinator/AnalyticsPromptCoordinator.swift

// File created from SimpleUserProfileExample
// $ createScreen.sh AnalyticsPrompt AnalyticsPrompt
/*
 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 SwiftUI

struct AnalyticsPromptCoordinatorParameters {
    /// The session to use if analytics are enabled.
    let session: MXSession
    /// The navigation router used to display the prompt.
    let navigationRouter: NavigationRouterType
}

final class AnalyticsPromptCoordinator: Coordinator {
    
    // MARK: - Properties
    
    // MARK: Private
    
    private let parameters: AnalyticsPromptCoordinatorParameters
    private let analyticsPromptHostingController: UIViewController
    private var _analyticsPromptViewModel: Any? = nil
    
    @available(iOS 14.0, *)
    fileprivate var analyticsPromptViewModel: AnalyticsPromptViewModel {
        return _analyticsPromptViewModel as! AnalyticsPromptViewModel
    }
    
    // MARK: Public

    // Must be used only internally
    var childCoordinators: [Coordinator] = []
    var completion: (() -> Void)?
    
    // MARK: - Setup
    
    @available(iOS 14.0, *)
    init(parameters: AnalyticsPromptCoordinatorParameters) {
        self.parameters = parameters
        
        let strings = AnalyticsPromptStrings()
        let promptType: AnalyticsPromptType
        
        if Analytics.shared.promptShouldDisplayUpgradeMessage {
            promptType = .upgrade(termsString: strings.termsUpgrade)
        } else {
            promptType = .newUser(termsString: strings.termsNewUser)
        }
        
        let viewModel = AnalyticsPromptViewModel(promptType: promptType, strings: strings, termsURL: BuildSettings.analyticsTermsURL)
        
        let view = AnalyticsPrompt(viewModel: viewModel.context)
        _analyticsPromptViewModel = viewModel
        analyticsPromptHostingController = VectorHostingController(rootView: view)
    }
    
    // MARK: - Public
    
    func start() {
        guard #available(iOS 14.0, *) else {
            MXLog.debug("[AnalyticsPromptCoordinator] start: Invalid iOS version, returning.")
            return
        }
        
        MXLog.debug("[AnalyticsPromptCoordinator] did start.")
        
        parameters.navigationRouter.present(toPresentable(), animated: true)
        
        analyticsPromptViewModel.completion = { [weak self] result in
            MXLog.debug("[AnalyticsPromptCoordinator] AnalyticsPromptViewModel did complete with result: \(result).")
            
            guard let self = self else { return }
            
            switch result {
            case .enable:
                Analytics.shared.optIn(with: self.parameters.session)
                self.parameters.navigationRouter.dismissModule(animated: true, completion: nil)
            case .disable:
                Analytics.shared.optOut()
                self.parameters.navigationRouter.dismissModule(animated: true, completion: nil)
            }
        }
    }
    
    func toPresentable() -> UIViewController {
        return self.analyticsPromptHostingController
    }
}