[Feature/#92] 프리뷰 화면 구현 및 비디오 저장 로직 확인

App/App/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSPhotoLibraryUsageDescription</key>
+	<string>동영상을 갤러리에 저장하기 위해 권한이 필요합니다.</string>
 	<key>UIUserInterfaceStyle</key>
 	<string>Dark</string>
 	<key>CFBundleDisplayName</key>

App/App/SceneDelegate.swift

@@ -136,5 +136,10 @@ extension SceneDelegate {
                 usecase: DIContainer.shared.resolve(type: EditVideoUseCaseInterface.self)
             )
         )
+
+        DIContainer.shared.register(
+            type: PreviewViewModel.self,
+            instance: PreviewViewModel(usecase: DIContainer.shared.resolve(type: EditVideoUseCaseInterface.self))
+        )
     }
 }

Data/Data/SharingVideoRepository.swift

@@ -29,6 +29,7 @@ public final class SharingVideoRepository: SharingVideoRepositoryInterface {
 
     public let updatedSharedVideo = PassthroughSubject<SharedVideo, Never>()
     public let isSynchronized = PassthroughSubject<Void, Never>()
+    public let startSynchronize = PassthroughSubject<Void, Never>()
 
     public init(socketProvider: SharingVideoSocketProvidable) {
         self.socketProvider = socketProvider
@@ -45,6 +46,7 @@ public final class SharingVideoRepository: SharingVideoRepositoryInterface {
                 guard let data = try? JSONDecoder().decode(SyncMessage.self, from: data) else { return }
                 switch data {
                     case .hash(let hashes):
+                        startSynchronize.send(())
                         sendComparingResult(with: hashes, to: peerID.id)
                     case .hashMatch(let result):
                         synchronize(with: result, to: peerID.id)

Domain/Interfaces/RepositoryInterface/SharingVideoRepositoryInterface.swift

@@ -12,6 +12,7 @@ import Foundation
 public protocol SharingVideoRepositoryInterface {
     var updatedSharedVideo: PassthroughSubject<SharedVideo, Never> { get }
     var isSynchronized: PassthroughSubject<Void, Never> { get }
+    var startSynchronize: PassthroughSubject<Void, Never> { get }
 
     func shareVideo(url: URL, resourceName: String)
     func broadcastHashes()

Domain/Interfaces/UseCaseInterface/EditVideoUseCaseInterface.swift

@@ -11,6 +11,7 @@ import Foundation
 
 public protocol EditVideoUseCaseInterface {
     var editedVideos: PassthroughSubject<[Video], Never> { get }
+    var videos: [Video] { get }
 
     func fetchVideos() async -> [Video]
 

Domain/Interfaces/UseCaseInterface/SharingVideoUseCaseInterface.swift

@@ -12,6 +12,7 @@ import Foundation
 public protocol SharingVideoUseCaseInterface {
     var updatedSharedVideo: PassthroughSubject<SharedVideo, Never> { get }
     var isSynchronized: PassthroughSubject<Void, Never> { get }
+    var startSynchronize: PassthroughSubject<Void, Never> { get }
 
     func fetchVideos() -> [SharedVideo]
     func shareVideo(_ url: URL, resourceName: String)

Domain/UseCase/VideoUseCase.swift

@@ -20,8 +20,13 @@ public final class VideoUseCase {
     private let editVideoRepository: EditVideoRepositoryInterface
 
 	public let isSynchronized = PassthroughSubject<Void, Never>()
+    public let startSynchronize = PassthroughSubject<Void, Never>()
     public let updatedSharedVideo = PassthroughSubject<SharedVideo, Never>()
     public let editedVideos = PassthroughSubject<[Video], Never>()
+
+    public var videos: [Video] {
+        editingVideos.values.sorted(by: { $0.index < $1.index })
+    }
 
     public init(
         sharingVideoRepository: SharingVideoRepositoryInterface,
@@ -106,6 +111,10 @@ private extension VideoUseCase {
 			.subscribe(isSynchronized)
 			.store(in: &cancellables)
 
+        sharingVideoRepository.startSynchronize
+            .subscribe(startSynchronize)
+            .store(in: &cancellables)
+
         editVideoRepository.editedVideos
             .sink(with: self) { (owner, videos) in
                 owner.editingVideos = videos
@@ -114,6 +123,12 @@ private extension VideoUseCase {
             .store(in: &cancellables)
 	}
 
+    func updateEditingVideos(_ videos: [Video]) {
+        videos.forEach {
+            editingVideos[$0.url.path] = $0
+        }
+    }
+
     func updatedVideo(url: URL, startTime: Double, endTime: Double) -> Video? {
         guard let video = editingVideos.first(where: { $0.url.path == url.path })
         else { return nil }

Feature/Feature.xcodeproj/project.pbxproj

@@ -34,7 +34,7 @@
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedBuildFileExceptionSet section */
-		FE8208012CED782500307694 /* Exceptions for "Feature" folder in "Feature" target */ = {
+		D95A3B062D01D7500007A71A /* Exceptions for "Feature" folder in "Feature" target */ = {
 			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
 			membershipExceptions = (
 				ConnectionView/ConnectionViewController.swift,
@@ -57,6 +57,7 @@
 				Helper/EventPublisher.swift,
 				Helper/RoundButton.swift,
 				"Helper/Sequence+AsyncCompactMap.swift",
+				Helper/Toast.swift,
 				"Helper/UIAlertController+Types.swift",
 				"Helper/UIColor+HexInitialization.swift",
 				"Helper/UIImage+Concat.swift",
@@ -65,6 +66,11 @@
 				"Helper/UIView+Extension.swift",
 				MainViewController.swift,
 				PresentationModel/VideoPresentationModel.swift,
+				PreviewView/PreviewViewController.swift,
+				PreviewView/ViewModel/PreviewViewInput.swift,
+				PreviewView/ViewModel/PreviewViewModel.swift,
+				PreviewView/ViewModel/PreviewViewOutput.swift,
+				ResultView/ResultViewController.swift,
 				SharedVideoEditView/SharedVideoEditViewController.swift,
 				SharedVideoEditView/VideoMerger/VideoMerger.swift,
 				SharedVideoEditView/View/CollectionView/VideoTimelineCollectionViewCell.swift,
@@ -102,10 +108,10 @@
 /* End PBXFileSystemSynchronizedBuildFileExceptionSet section */
 
 /* Begin PBXFileSystemSynchronizedRootGroup section */
-		FE6EF3F12CD8B71E005DC39D /* Feature */ = {
+		D95A3AC62D01D7500007A71A /* Feature */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
 			exceptions = (
-				FE8208012CED782500307694 /* Exceptions for "Feature" folder in "Feature" target */,
+				D95A3B062D01D7500007A71A /* Exceptions for "Feature" folder in "Feature" target */,
 			);
 			path = Feature;
 			sourceTree = "<group>";
@@ -130,7 +136,7 @@
 		FE6EF3E62CD8B71E005DC39D = {
 			isa = PBXGroup;
 			children = (
-				FE6EF3F12CD8B71E005DC39D /* Feature */,
+				D95A3AC62D01D7500007A71A /* Feature */,
 				FE6EF4272CD8B843005DC39D /* Frameworks */,
 				FE6EF3F02CD8B71E005DC39D /* Products */,
 			);

Feature/Feature/Helper/Toast.swift

@@ -0,0 +1,56 @@
+//
+//  Toast.swift
+//  Feature
+//
+//  Created by 디해 on 12/5/24.
+//
+
+import UIKit
+
+extension UIView {
+    private static let toastTag = 9999
+
+    func showToast(message: String, duration: TimeInterval? = nil) {
+        if let existingToast = self.viewWithTag(UIView.toastTag) {
+            existingToast.removeFromSuperview()
+        }
+
+        let toastLabel = UILabel()
+        toastLabel.text = message
+        toastLabel.textColor = .white
+        toastLabel.backgroundColor = UIColor.black.withAlphaComponent(0.8)
+        toastLabel.textAlignment = .center
+        toastLabel.font = UIFont.systemFont(ofSize: 15)
+        toastLabel.numberOfLines = 0
+        toastLabel.tag = UIView.toastTag
+
+        let maxSize = CGSize(width: self.bounds.width - 40, height: self.bounds.height)
+        let textSize = toastLabel.sizeThatFits(maxSize)
+        toastLabel.frame = CGRect(
+            x: (self.bounds.width - textSize.width - 20) / 2,
+            y: self.bounds.height / 2 - textSize.height / 2,
+            width: textSize.width + 40,
+            height: textSize.height + 40
+        )
+        toastLabel.layer.cornerRadius = 20
+        toastLabel.layer.masksToBounds = true
+
+        self.addSubview(toastLabel)
+
+        if let duration = duration {
+            DispatchQueue.main.asyncAfter(deadline: .now() + duration) { [weak self] in
+                self?.hideToast()
+            }
+        }
+    }
+
+    func hideToast() {
+        if let toastLabel = self.viewWithTag(UIView.toastTag) {
+            UIView.animate(withDuration: 0.5, animations: {
+                toastLabel.alpha = 0.0
+            }) { _ in
+                toastLabel.removeFromSuperview()
+            }
+        }
+    }
+}

Feature/Feature/PreviewView/PreviewViewController.swift

@@ -0,0 +1,122 @@
+//
+//  ResultViewController.swift
+//  Feature
+//
+//  Created by 디해 on 12/5/24.
+//
+
+import AVFoundation
+import Combine
+import UIKit
+
+public final class PreviewViewController: UIViewController {
+    private let videoView = VideoPlayerView()
+    private let saveButton = UIButton(type: .system)
+
+    private let viewModel: PreviewViewModel
+    private let input = PassthroughSubject<PreviewViewInput, Never>()
+    var cancellables = Set<AnyCancellable>()
+
+    public init(viewModel: PreviewViewModel) {
+        self.viewModel = viewModel
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    public override func viewDidLoad() {
+        super.viewDidLoad()
+
+        setupUI()
+        setupViewModelBinding()
+        setupUIBinding()
+    }
+
+    public override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+
+        input.send(.loadPreview(size: videoView.frame.size))
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}
+
+// MARK: - Binding
+private extension PreviewViewController {
+    func setupViewModelBinding() {
+        let output = viewModel.transform(input.eraseToAnyPublisher())
+
+        output.receive(on: DispatchQueue.main)
+            .sink(with: self) { (owner, output) in
+                switch output {
+                case .loadedPreview(let playerItem):
+                    owner.videoView.replaceVideo(playerItem: playerItem)
+                case .videoSaved:
+                    owner.navigateToResult()
+                }
+            }
+            .store(in: &cancellables)
+    }
+
+    func setupUIBinding() {
+        saveButton.bs.tap
+            .sink(with: self) { owner, _ in
+                owner.input.send(.saveVideo)
+            }
+            .store(in: &cancellables)
+    }
+}
+
+// MARK: - UI Configure
+private extension PreviewViewController {
+    func setupUI() {
+        setupViewAttributes()
+        setupViewHierarchies()
+        setupViewConstraints()
+    }
+
+    func setupViewAttributes() {
+        view.backgroundColor = .black
+        setupSaveButton()
+    }
+
+    func setupSaveButton() {
+        saveButton.backgroundColor = .white
+        saveButton.setTitle("저장", for: .normal)
+        saveButton.setTitleColor(.black, for: .normal)
+        saveButton.titleLabel?.font = .systemFont(ofSize: 20)
+        saveButton.layer.cornerRadius = 25
+    }
+
+    func setupViewHierarchies() {
+        view.addSubviews(
+            videoView,
+            saveButton
+        )
+    }
+
+    func setupViewConstraints() {
+        videoView.snp.makeConstraints { make in
+            make.top.equalToSuperview()
+            make.horizontalEdges.equalToSuperview()
+            make.height.equalTo(550)
+        }
+
+        saveButton.snp.makeConstraints { make in
+            make.centerX.equalToSuperview()
+            make.top.equalTo(videoView.snp.bottom).offset(30)
+            make.width.equalTo(160)
+            make.height.equalTo(50)
+        }
+    }
+}
+
+// MARK: - Private Methods
+private extension PreviewViewController {
+    func navigateToResult() {
+        let resultViewController = ResultViewController()
+
+        navigationController?.pushViewController(resultViewController, animated: true)
+    }
+}

Feature/Feature/PreviewView/ViewModel/PreviewViewInput.swift

@@ -0,0 +1,15 @@
+//
+//  ResultViewInput.swift
+//  Feature
+//
+//  Created by 디해 on 12/5/24.
+//
+
+import Foundation
+
+// MARK: - Input
+
+enum PreviewViewInput {
+    case loadPreview(size: CGSize)
+    case saveVideo
+}