[#35] 현재 보이는 유저 카드 셀에서의 타임이 0이 되면 자동으로 다음 셀로 스크롤 구현

Falling/Sources/Base/TFBaseCollectionViewCell.swift

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+//
+//  TFBaseCollectionViewCell.swift
+//  Falling
+//
+//  Created by SeungMin on 2023/10/02.
+//
+
+import UIKit
+
+import RxSwift
+
+class TFBaseCollectionViewCell: UICollectionViewCell {
+
+  var disposeBag = DisposeBag()
+
+  override init(frame: CGRect) {
+    super.init(frame: frame)
+    makeUI()
+  }
+
+  required init?(coder: NSCoder) {
+    fatalError("init(coder:) has not been implemented")
+  }
+
+  override func prepareForReuse() {
+    super.prepareForReuse()
+    self.disposeBag = DisposeBag()
+  }
+
+  func makeUI() { }
+}

Falling/Sources/DataLayer/API/MainAPI/DTO/UserResponse.swift

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+//
+//  UserResponse.swift
+//  Falling
+//
+//  Created by SeungMin on 2023/10/06.
+//
+
+struct UserResponse: Codable {
+  let userList: [UserDTO]
+}
+
+struct UserDTO: Codable {
+  let userIdx: Int
+//  enum CodingKeys: CodingKey {
+//    
+//  }
+}
+
+struct UserSectionMapper {
+  static func map(list: [UserDTO]) -> [UserSection] {
+    let mutableSection: [UserSection] = []
+    return mutableSection
+  }
+}

Falling/Sources/Feature/Main/Cell/MainCollectionViewCell.swift

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+//
+//  UserCollectionViewCell.swift
+//  Falling
+//
+//  Created by SeungMin on 2023/10/02.
+//
+
+import UIKit
+import RxSwift
+
+@objc protocol TimeOverDelegate: AnyObject {
+  @objc func scrollToNext()
+}
+
+final class MainCollectionViewCell: TFBaseCollectionViewCell {
+
+  var viewModel: MainCollectionViewItemViewModel!
+  weak var delegate: TimeOverDelegate?
+
+  lazy var userImageView: UIImageView = {
+    let imageView = UIImageView()
+    imageView.image = .add
+    return imageView
+  }()
+
+  lazy var userContentView: UIView = {
+    let view = UIView()
+    view.backgroundColor = FallingAsset.Color.clear.color
+    return view
+  }()
+
+  lazy var progressContainerView: UIView = {
+    let view = UIView()
+    view.layer.cornerRadius = 15
+    view.backgroundColor = FallingAsset.Color.dimColor.color.withAlphaComponent(0.5)
+    return view
+  }()
+
+  lazy var timerView = CardTimerView()
+
+  lazy var progressView = CardProgressView()
+
+  override func layoutSubviews() {
+    self.backgroundColor = .systemGray
+  }
+
+  override func makeUI() {
+    // TODO: cornerRadius 동적으로 설정해야 할 것.
+    self.layer.cornerRadius = 15
+
+    self.addSubview(userImageView)
+    self.addSubview(userContentView)
+
+    self.userContentView.addSubview(progressContainerView)
+
+    self.progressContainerView.addSubviews([
+      timerView,
+      progressView
+    ])
+
+    self.userImageView.snp.makeConstraints {
+      $0.top.equalToSuperview()
+      $0.leading.equalToSuperview()
+      $0.bottom.equalToSuperview()
+      $0.trailing.equalToSuperview()
+    }
+
+    self.userContentView.snp.makeConstraints {
+      $0.top.equalToSuperview()
+      $0.leading.equalToSuperview()
+      $0.bottom.equalToSuperview()
+      $0.trailing.equalToSuperview()
+    }
+
+    self.progressContainerView.snp.makeConstraints {
+      $0.top.equalTo(self.safeAreaLayoutGuide).inset(12)
+      $0.leading.trailing.equalToSuperview().inset(12)
+      $0.height.equalTo(32)
+    }
+
+    self.timerView.snp.makeConstraints {
+      $0.leading.equalToSuperview().inset(9)
+      $0.centerY.equalToSuperview()
+      $0.width.equalTo(22)
+      $0.height.equalTo(22)
+    }
+
+    self.progressView.snp.makeConstraints {
+      $0.leading.equalTo(timerView.snp.trailing).offset(9)
+      $0.trailing.equalToSuperview().inset(12)
+      $0.centerY.equalToSuperview()
+      $0.height.equalTo(6)
+    }
+  }
+
+  override func prepareForReuse() {
+    super.prepareForReuse()
+    disposeBag = DisposeBag()
+  }
+
+  func setup(item: UserDTO) {
+    viewModel = MainCollectionViewItemViewModel(userDTO: item)
+  }
+
+  func bindViewModel() {
+    let output = viewModel.transform(input: MainCollectionViewItemViewModel.Input())
+
+    output.timeState
+      .drive(self.rx.timeState)
+      .disposed(by: self.disposeBag)
+
+    output.isTimeOver
+      .do { value in
+        if value { self.delegate?.scrollToNext() }
+      }.drive()
+      .disposed(by: self.disposeBag)
+  }
+
+  func dotPosition(progress: Double, rect: CGRect) -> CGPoint {
+    var progress = progress
+    // progress가 -0.05미만 혹은 1이상은 점(dot)을 0초에 위치시키기 위함
+    let strokeRange: Range<Double> = -0.05..<0.95
+    if !(strokeRange ~= progress) { progress = 0.95 }
+    let radius = CGFloat(rect.height / 2 - timerView.strokeLayer.lineWidth / 2)
+    let angle = 2 * CGFloat.pi * CGFloat(progress) - CGFloat.pi / 2
+    let dotX = radius * cos(angle + 0.35)
+    let dotY = radius * sin(angle + 0.35)
+
+    let point = CGPoint(x: dotX, y: dotY)
+
+    return CGPoint(
+      x: rect.midX + point.x,
+      y: rect.midY + point.y
+    )
+  }
+}
+
+extension Reactive where Base: MainCollectionViewCell {
+  var timeState: Binder<MainCollectionViewItemViewModel.TimeState> {
+    return Binder(self.base) { (base, timeState) in
+      base.timerView.trackLayer.strokeColor = timeState.fillColor.color.cgColor
+      base.timerView.strokeLayer.strokeColor = timeState.color.color.cgColor
+      base.timerView.dotLayer.strokeColor = timeState.color.color.cgColor
+      base.timerView.dotLayer.fillColor = timeState.color.color.cgColor
+      base.timerView.timerLabel.textColor = timeState.color.color
+      base.progressView.progressBarColor = timeState.color.color
+
+      base.timerView.dotLayer.isHidden = timeState.isDotHidden
+
+      base.timerView.timerLabel.text = timeState.getText
+
+      base.progressView.progress = CGFloat(timeState.getProgress)
+
+      // TimerView Animation은 소수점 둘째 자리까지 표시해야 오차가 발생하지 않음
+      let strokeEnd = round(CGFloat(timeState.getProgress) * 100) / 100
+      base.timerView.dotLayer.position = base.dotPosition(progress: strokeEnd, rect: base.timerView.bounds)
+
+      base.timerView.strokeLayer.strokeEnd = strokeEnd
+    }
+  }
+}

Falling/Sources/Feature/Main/Cell/MainCollectionViewItemViewModel.swift

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+//
+//  MainCollectionViewItemViewModel.swift
+//  Falling
+//
+//  Created by SeungMin on 2023/10/06.
+//
+
+import Foundation
+
+import RxSwift
+import RxCocoa
+
+final class MainCollectionViewItemViewModel: ViewModelType {
+
+  let userDTO: UserDTO
+
+  init(userDTO: UserDTO) {
+    self.userDTO = userDTO
+  }
+
+  enum TimeState {
+    case initial(value: Double) // 7~8
+    case five(value: Double)  // 6~7
+    case four(value: Double) // 5~6
+    case three(value: Double) // 4~5
+    case two(value: Double) // 3~4
+    case one(value: Double) // 2~3
+    case zero(value: Double) // 1~2
+    case over(value: Double) // 0~1
+
+    init(rawValue: Double) {
+      switch rawValue {
+      case 7.0..<8.0:
+        self = .initial(value: rawValue)
+      case 6.0..<7.0:
+        self = .five(value: rawValue)
+      case 5.0..<6.0:
+        self = .four(value: rawValue)
+      case 4.0..<5.0:
+        self = .three(value: rawValue)
+      case 3.0..<4.0:
+        self = .two(value: rawValue)
+      case 2.0..<3.0:
+        self = .one(value: rawValue)
+      case 1.0..<2.0:
+        self = .zero(value: rawValue)
+      default:
+        self = .over(value: rawValue)
+      }
+    }
+
+    var color: FallingColors {
+      switch self {
+      case .zero, .five:
+        return FallingAsset.Color.primary500
+      case .four:
+        return FallingAsset.Color.thtOrange100
+      case .three:
+        return FallingAsset.Color.thtOrange200
+      case .two:
+        return FallingAsset.Color.thtOrange300
+      case .one:
+        return FallingAsset.Color.thtRed
+      default:
+        return FallingAsset.Color.neutral300
+      }
+    }
+
+    var isDotHidden: Bool {
+      switch self {
+      case .initial, .over:
+        return true
+      default:
+        return false
+      }
+    }
+
+    var fillColor: FallingColors {
+      switch self {
+      case .over:
+        return FallingAsset.Color.neutral300
+      default:
+        return FallingAsset.Color.clear
+      }
+    }
+
+    var getText: String {
+      switch self {
+      case .initial, .over:
+        return String("-")
+      case .five(let value), .four(let value), .three(let value), .two(let value), .one(let value), .zero(let value):
+        return String(Int(value) - 1)
+      }
+    }
+
+    var getProgress: Double {
+      switch self {
+      case .initial:
+        return 1
+      case .five(let value), .four(let value), .three(let value), .two(let value), .one(let value), .zero(let value), .over(let value):
+        return (value - 2) / 5
+      }
+    }
+  }
+
+  var disposeBag: DisposeBag = DisposeBag()
+
+  struct Input {
+
+  }
+
+  struct Output {
+    let timeState: Driver<TimeState>
+    let isTimeOver: Driver<Bool>
+  }
+
+  func transform(input: Input) -> Output {
+    let time = Observable<Int>.interval(.milliseconds(10),
+                                        scheduler: MainScheduler.instance)
+      .take(8 * 100 + 1)
+      .map { round((8 - Double($0) / 100) * 100) / 100 }
+      .asDriver(onErrorDriveWith: Driver<Double>.empty())
+
+    let timeState = time.map { TimeState(rawValue: $0) }
+    let isTimeOver = time.map { $0 == 0.0 }
+
+    return Output(
+      timeState: timeState,
+      isTimeOver: isTimeOver
+    )
+  }
+}