[Feat] #243 - secondOnboardingView MVVM + Combine 적용

iOS-NOTTODO/iOS-NOTTODO/Coordinator/Factory/ViewControllerFactory.swift

@@ -74,7 +74,8 @@ extension ViewControllerFactoryImpl {
         return viewController
     }
     func makeSecondOnboardingViewController(coordinator: AuthCoordinator) -> SecondOnboardingViewController {
-        let viewController = SecondOnboardingViewController(coordinator: coordinator)
+        let viewModel = SecondOnboardingViewModelImpl(coordinator: coordinator)
+        let viewController = SecondOnboardingViewController(viewModel: viewModel)
         return viewController
     }
     func makeThirdOnboardingViewController(coordinator: AuthCoordinator) -> ThirdOnboardingViewController {

iOS-NOTTODO/iOS-NOTTODO/Presentation/Onboarding/ViewControllers/SecondOnboardingViewController.swift

@@ -7,6 +7,7 @@
 
 import UIKit
 
+import Combine
 import SnapKit
 import Then
 
@@ -20,16 +21,20 @@ final class SecondOnboardingViewController: UIViewController {
     private let onboardingModel: [SecondOnboardingModel] = SecondOnboardingModel.titles
     private var dataSource: UICollectionViewDiffableDataSource<Section, SecondOnboardingModel>! = nil
     private lazy var safeArea = self.view.safeAreaLayoutGuide
-    private weak var coordinator: AuthCoordinator?
+
+    private let viewModel: any SecondOnboardingViewModel
+    private var cancelBag = Set<AnyCancellable>()
+
+    private let onbaordingCellTapped = PassthroughSubject<IndexPath, Never>()
 
     // MARK: - UI Components
 
     private lazy var collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout())
 
     // MARK: - init
 
-    init(coordinator: AuthCoordinator) {
-        self.coordinator = coordinator
+    init(viewModel: some SecondOnboardingViewModel) {
+        self.viewModel = viewModel
         super.init(nibName: nil, bundle: nil)
     }
 
@@ -47,6 +52,7 @@ final class SecondOnboardingViewController: UIViewController {
         setLayout()
         setupDataSource()
         reloadData()
+        setBindings()
     }
 }
 
@@ -113,12 +119,18 @@ extension SecondOnboardingViewController {
         let layout = UICollectionViewCompositionalLayout(section: section)
         return layout
     }
+
+    private func setBindings() {
+        let input = SecondOnboardingViewModelInput(
+            cellTapped: onbaordingCellTapped)
+        _ = viewModel.transform(input: input)
+    }
 }
 
 extension SecondOnboardingViewController: UICollectionViewDelegate {
     func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
         AmplitudeAnalyticsService.shared.send(event: AnalyticsEvent.OnboardingClick.clickOnboardingNext2(select: SecondOnboardingModel.titles[indexPath.row].title))
 
-        coordinator?.showThirdOnboardingViewController()
+        self.onbaordingCellTapped.send(indexPath)
     }
 }

iOS-NOTTODO/iOS-NOTTODO/Presentation/Onboarding/ViewModel/SecondOnboardingViewModel.swift

@@ -5,4 +5,13 @@
 //  Created by 강윤서 on 3/14/24.
 //
 
+import Combine
 import Foundation
+
+protocol SecondOnboardingViewModel: ViewModel where Input == SecondOnboardingViewModelInput, Output == SecondOnboardingViewModelOutput { }
+
+struct SecondOnboardingViewModelInput {
+    let cellTapped: PassthroughSubject<IndexPath, Never>
+}
+
+struct SecondOnboardingViewModelOutput { }

iOS-NOTTODO/iOS-NOTTODO/Presentation/Onboarding/ViewModel/SecondOnboardingViewModelImpl.swift

@@ -5,4 +5,24 @@
 //  Created by 강윤서 on 3/14/24.
 //
 
-import Foundation
+import Combine
+
+final class SecondOnboardingViewModelImpl: SecondOnboardingViewModel {
+
+    private weak var coordinator: AuthCoordinator?
+    private var cancelBag = Set<AnyCancellable>()
+
+    init(coordinator: AuthCoordinator) {
+        self.coordinator = coordinator
+    }
+
+    func transform(input: SecondOnboardingViewModelInput) -> SecondOnboardingViewModelOutput {
+        input.cellTapped
+            .sink { [weak self] _ in
+                guard let self else { return }
+                self.coordinator?.showThirdOnboardingViewController()
+            }
+            .store(in: &cancelBag)
+        return SecondOnboardingViewModelOutput()
+    }
+}