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| 1 | +import ComposableArchitecture |
| 2 | +import SwiftUI |
| 3 | + |
| 4 | +struct RecordingMemoState: Equatable { |
| 5 | + var date: Date |
| 6 | + var duration: TimeInterval = 0 |
| 7 | + var mode: Mode = .recording |
| 8 | + var url: URL |
| 9 | + |
| 10 | + enum Mode { |
| 11 | + case recording |
| 12 | + case encoding |
| 13 | + } |
| 14 | + |
| 15 | + struct Failed: Equatable, Error {} |
| 16 | +} |
| 17 | + |
| 18 | +enum RecordingMemoAction: Equatable { |
| 19 | + case audioRecorderDidFinish(TaskResult<Bool>) |
| 20 | + case delegate(DelegateAction) |
| 21 | + case finalRecordingTime(TimeInterval) |
| 22 | + case task |
| 23 | + case timerUpdated |
| 24 | + case stopButtonTapped |
| 25 | + |
| 26 | + enum DelegateAction: Equatable { |
| 27 | + case didFinish(TaskResult<RecordingMemoState>) |
| 28 | + } |
| 29 | +} |
| 30 | + |
| 31 | +struct RecordingMemoEnvironment { |
| 32 | + var audioRecorder: AudioRecorderClient |
| 33 | + var mainRunLoop: AnySchedulerOf<RunLoop> |
| 34 | +} |
| 35 | + |
| 36 | +let recordingMemoReducer = Reducer< |
| 37 | + RecordingMemoState, |
| 38 | + RecordingMemoAction, |
| 39 | + RecordingMemoEnvironment |
| 40 | +> { state, action, environment in |
| 41 | + switch action { |
| 42 | + case .audioRecorderDidFinish(.success(true)): |
| 43 | + return .task { [state] in .delegate(.didFinish(.success(state))) } |
| 44 | + |
| 45 | + case .audioRecorderDidFinish(.success(false)): |
| 46 | + return .task { .delegate(.didFinish(.failure(RecordingMemoState.Failed()))) } |
| 47 | + |
| 48 | + case let .audioRecorderDidFinish(.failure(error)): |
| 49 | + return .task { .delegate(.didFinish(.failure(error))) } |
| 50 | + |
| 51 | + case .delegate: |
| 52 | + return .none |
| 53 | + |
| 54 | + case let .finalRecordingTime(duration): |
| 55 | + state.duration = duration |
| 56 | + return .none |
| 57 | + |
| 58 | + case .stopButtonTapped: |
| 59 | + state.mode = .encoding |
| 60 | + return .run { send in |
| 61 | + if let currentTime = await environment.audioRecorder.currentTime() { |
| 62 | + await send(.finalRecordingTime(currentTime)) |
| 63 | + } |
| 64 | + await environment.audioRecorder.stopRecording() |
| 65 | + } |
| 66 | + |
| 67 | + case .task: |
| 68 | + return .run { [url = state.url] send in |
| 69 | + async let startRecording: Void = await send( |
| 70 | + .audioRecorderDidFinish( |
| 71 | + TaskResult { try await environment.audioRecorder.startRecording(url) } |
| 72 | + ) |
| 73 | + ) |
| 74 | + |
| 75 | + for await _ in environment.mainRunLoop.timer(interval: .seconds(1)) { |
| 76 | + await send(.timerUpdated) |
| 77 | + } |
| 78 | + } |
| 79 | + |
| 80 | + case .timerUpdated: |
| 81 | + state.duration += 1 |
| 82 | + return .none |
| 83 | + } |
| 84 | +} |
| 85 | + |
| 86 | +struct RecordingMemoView: View { |
| 87 | + let store: Store<RecordingMemoState, RecordingMemoAction> |
| 88 | + |
| 89 | + var body: some View { |
| 90 | + WithViewStore(self.store) { viewStore in |
| 91 | + VStack(spacing: 12) { |
| 92 | + Text("Recording") |
| 93 | + .font(.title) |
| 94 | + .colorMultiply(Color(Int(viewStore.duration).isMultiple(of: 2) ? .systemRed : .label)) |
| 95 | + .animation(.easeInOut(duration: 0.5), value: viewStore.duration) |
| 96 | + |
| 97 | + if let formattedDuration = dateComponentsFormatter.string(from: viewStore.duration) { |
| 98 | + Text(formattedDuration) |
| 99 | + .font(.body.monospacedDigit().bold()) |
| 100 | + .foregroundColor(.black) |
| 101 | + } |
| 102 | + |
| 103 | + ZStack { |
| 104 | + Circle() |
| 105 | + .foregroundColor(Color(.label)) |
| 106 | + .frame(width: 74, height: 74) |
| 107 | + |
| 108 | + Button(action: { viewStore.send(.stopButtonTapped, animation: .default) }) { |
| 109 | + RoundedRectangle(cornerRadius: 4) |
| 110 | + .foregroundColor(Color(.systemRed)) |
| 111 | + .padding(17) |
| 112 | + } |
| 113 | + .frame(width: 70, height: 70) |
| 114 | + } |
| 115 | + } |
| 116 | + .task { |
| 117 | + await viewStore.send(.task).finish() |
| 118 | + } |
| 119 | + } |
| 120 | + } |
| 121 | +} |
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