[Fix] #371 전화 수신, 발신 시 소리 재생 오류 해결

Macro/Domain/UseCase/Interface/PlaySoundInterface.swift

@@ -5,8 +5,12 @@
 //  Created by Yunki on 10/1/24.
 //
 
+import Combine
+
 // 소리내는 UseCase용
 protocol PlaySoundInterface {
+    var callInterruptPublisher: AnyPublisher<Bool, Never> { get }
+    func audioEngineStart()
     func beep(_ accent: Accent)
     func setSoundType()
 }

Macro/Domain/UseCase/MetronomeOnOffImplement.swift

@@ -61,6 +61,12 @@
             self.timer?.schedule(deadline: .now() + nextStartTime, repeating: self.interval, leeway: .nanoseconds(1))
         }
         .store(in: &self.cancelBag)
+
+        self.soundManager.callInterruptPublisher.sink {[weak self] callInterrupt in
+        guard let self else { return }
+            callInterrupt == true ? self.stop() : nil
+        }
+        .store(in: &self.cancelBag)
     }
 }
 
@@ -84,11 +90,13 @@
     }
 
     func play() {
+        // AudioEngine start()
+        self.soundManager.audioEngineStart()
         // 데이터 갱신
         self.currentBeatIndex = 0
         UIApplication.shared.isIdleTimerDisabled = true
         // Timer 설정
         if let timer { self.stop() }
         self.timer = DispatchSource.makeTimerSource(queue: self.queue)
         self.timer?.schedule(deadline: .now(), repeating: self.interval, leeway: .nanoseconds(1))
         self.timer?.setEventHandler { [weak self] in

Macro/Service/SoundManager.swift

@@ -6,6 +6,7 @@
 //
 
 import SwiftUI
+import Combine
 import AVFoundation
 
 class SoundManager {
@@ -17,6 +18,8 @@ class SoundManager {
     private let audioSession = AVAudioSession.sharedInstance()
     private var soundType: SoundType
 
+    private var publisher: PassthroughSubject<Bool, Never> = .init()
+
     init?(appState: AppState) {
         self.appState = appState
         self.soundType = .beep
@@ -40,15 +43,40 @@ class SoundManager {
         self.engine.connect(dummyNode, to: self.engine.mainMixerNode, format: nil)
 
         // 엔진 시작
-        do {
-            try engine.start()
-        } catch {
-            print("SoundManager: 오디오 엔진 시작 중 에러 발생 - \(error)")
-            return nil
-        }
+        self.audioEngineStart()
 
         // 더미 노드 분리
         self.engine.detach(dummyNode)
+
+        // 전화 송/수신 시 interrupt 여부를 감지를 위한 notificationCenter 생성
+        self.setupNotifications()
+    }
+
+    @objc func handleInterruption(notification: Notification) {
+        guard let userInfo = notification.userInfo,
+              let typeValue = userInfo[AVAudioSessionInterruptionTypeKey] as? UInt,
+              let type = AVAudioSession.InterruptionType(rawValue: typeValue) else {
+            return
+        }
+        switch type {
+        case .began:
+            self.publisher.send(true)
+            self.engine.stop()
+
+        case .ended:
+            self.audioEngineStart()
+            self.publisher.send(false)
+        default: ()
+        }
+    }
+
+    private func setupNotifications() {
+        let callInterruptNotificationCenter = NotificationCenter.default
+        callInterruptNotificationCenter.addObserver(self,
+                                                    selector: #selector(handleInterruption),
+                                                    name: AVAudioSession.interruptionNotification,
+                                                    object: self.audioSession
+        )
     }
 
     private func configureSoundPlayers(weak: String, medium: String, strong: String) throws {
@@ -85,6 +113,21 @@ class SoundManager {
 
 extension SoundManager: PlaySoundInterface {
 
+    var callInterruptPublisher: AnyPublisher<Bool, Never> {
+        publisher.eraseToAnyPublisher()
+    }
+
+    func audioEngineStart() {
+        self.engine.stop()
+        if !self.engine.isRunning {
+            do {
+                try self.engine.start()
+            } catch {
+                print("오디오 엔진 시작 및 재시작 실패: \(error.localizedDescription)")
+            }
+        }
+    }
+
     func beep(_ accent: Accent) {
 
         guard let buffer = self.audioBuffers[accent] else { return }