User verification: Implement start user verification screen.

Riot/Modules/UserVerification/Start/UserVerificationStartCoordinator.swift

@@ -0,0 +1,77 @@
+// File created from ScreenTemplate
+// $ createScreen.sh Start UserVerificationStart
+/*
+ Copyright 2020 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 UIKit
+
+final class UserVerificationStartCoordinator: UserVerificationStartCoordinatorType {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let session: MXSession
+    private let roomMember: MXRoomMember
+    
+    private var userVerificationStartViewModel: UserVerificationStartViewModelType
+    private let userVerificationStartViewController: UserVerificationStartViewController
+    
+    // MARK: Public
+
+    // Must be used only internally
+    var childCoordinators: [Coordinator] = []
+    
+    weak var delegate: UserVerificationStartCoordinatorDelegate?
+    
+    // MARK: - Setup
+    
+    init(session: MXSession, roomMember: MXRoomMember) {
+        self.session = session
+        self.roomMember = roomMember
+        
+        let userVerificationStartViewModel = UserVerificationStartViewModel(session: self.session, roomMember: self.roomMember)
+        let userVerificationStartViewController = UserVerificationStartViewController.instantiate(with: userVerificationStartViewModel)
+        self.userVerificationStartViewModel = userVerificationStartViewModel
+        self.userVerificationStartViewController = userVerificationStartViewController
+    }
+    
+    // MARK: - Public methods
+    
+    func start() {            
+        self.userVerificationStartViewModel.coordinatorDelegate = self
+    }
+    
+    func toPresentable() -> UIViewController {
+        return self.userVerificationStartViewController
+    }
+}
+
+// MARK: - UserVerificationStartViewModelCoordinatorDelegate
+extension UserVerificationStartCoordinator: UserVerificationStartViewModelCoordinatorDelegate {
+    func userVerificationStartViewModelDidCancel(_ viewModel: UserVerificationStartViewModelType) {
+        self.delegate?.userVerificationStartCoordinatorDidCancel(self)
+    }
+    
+    func userVerificationStartViewModel(_ viewModel: UserVerificationStartViewModelType, didCompleteWithOutgoingTransaction transaction: MXSASTransaction) {
+        self.delegate?.userVerificationStartCoordinator(self, didCompleteWithOutgoingTransaction: transaction)
+    }
+    
+    func userVerificationStartViewModel(_ viewModel: UserVerificationStartViewModelType, didTransactionCancelled transaction: MXSASTransaction) {
+        self.delegate?.userVerificationStartCoordinator(self, didTransactionCancelled: transaction)
+    }
+}