Restore sound play after quitting

LeCountdown.xcodeproj/project.pbxproj

@@ -155,7 +155,6 @@
 		C4E5D66A29B73FC6008E7465 /* TimerShortcuts.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4E5D66929B73FC6008E7465 /* TimerShortcuts.swift */; };
 		C4E5D66D29B753D7008E7465 /* AppShortcuts.strings in Resources */ = {isa = PBXBuildFile; fileRef = C4E5D66F29B753D7008E7465 /* AppShortcuts.strings */; };
 		C4E5D67429B88734008E7465 /* DelaySoundPlayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4E5D67329B88734008E7465 /* DelaySoundPlayer.swift */; };
-		C4E5D67729B88BB5008E7465 /* DelaySoundPlayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4E5D67329B88734008E7465 /* DelaySoundPlayer.swift */; };
 		C4E5D67829B88BB5008E7465 /* DelaySoundPlayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4E5D67329B88734008E7465 /* DelaySoundPlayer.swift */; };
 		C4E5D67A29B8C5A1008E7465 /* VolumeView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4E5D67929B8C5A1008E7465 /* VolumeView.swift */; };
 		C4E5D67C29B8D4A5008E7465 /* Low_Tom_Disto_Earth.wav in Resources */ = {isa = PBXBuildFile; fileRef = C4E5D67B29B8D4A5008E7465 /* Low_Tom_Disto_Earth.wav */; };
@@ -1129,7 +1128,6 @@
 				C4BA2B4A299FCE0C00CB4FBA /* IntervalGroup+CoreDataProperties.swift in Sources */,
 				C4BA2B4D299FCE0C00CB4FBA /* Stopwatch+CoreDataProperties.swift in Sources */,
 				C4F8B194298AC288005C86A5 /* Record+CoreDataProperties.swift in Sources */,
-				C4E5D67729B88BB5008E7465 /* DelaySoundPlayer.swift in Sources */,
 				C438C8152982BD9000BF3EF9 /* IntentDataProvider.swift in Sources */,
 				C473C31929A926F50056B38A /* LaunchWidget.intentdefinition in Sources */,
 				C4F8B15B29892D40005C86A5 /* SoundPlayer.swift in Sources */,

LeCountdown/Conductor.swift

@@ -20,15 +20,13 @@ fileprivate enum Const: String {
     case confirmationSound = "PVP_Stab_Oneshot_Bleep_Em.wav"
 }
 
-typealias TimerID = String
-
 class Conductor: ObservableObject {
     
     static let maestro: Conductor = Conductor()
 
     @Published var soundPlayer: SoundPlayer? = nil
     
-    var delayedSoundPlayers: [TimerID : DelaySoundPlayer] = [:]
+    fileprivate var _delayedSoundPlayers: [TimerID : DelaySoundPlayer] = [:]
     
     @UserDefault(PreferenceKey.countdowns.rawValue, defaultValue: [:]) static var savedCountdowns: [String : DateInterval]
     @UserDefault(PreferenceKey.stopwatches.rawValue, defaultValue: [:]) static var savedStopwatches: [String : Date]
@@ -62,8 +60,13 @@ class Conductor: ObservableObject {
     }
     
     func removeLiveTimer(id: String) {
+        
+        Logger.log("removeLiveTimer")
         self.liveTimers.removeAll(where: { $0.id == id })
         self.cancelledCountdowns.removeAll(where: { $0 == id })
+        if let soundPlayer = self._delayedSoundPlayers[id] {
+            soundPlayer.stop()
+        }
     }
     
     fileprivate func _buildLiveTimers() {
@@ -162,17 +165,15 @@ class Conductor: ObservableObject {
             
             do {
                 let date = Date(timeIntervalSinceNow: countdown.duration)
+
+                self.startCountdown(date, countdown: countdown)
+
                 let soundFile = try SoundFile(fullName: countdown.soundName)
-                
-                let soundPlayer = DelaySoundPlayer(soundFile: soundFile)
-                
-                self.delayedSoundPlayers[countdown.stringId] = soundPlayer
-                
+                let soundPlayer = try DelaySoundPlayer(timerID: countdown.stringId, soundFile: soundFile)
+                self._delayedSoundPlayers[countdown.stringId] = soundPlayer
                 try soundPlayer.start(in: countdown.duration,
                                                  repeatCount: Int(countdown.repeatCount))
                 
-                self.startCountdown(date, countdown: countdown)
-                
                 if Preferences.playConfirmationSound {
                     self._playSound(Const.confirmationSound.rawValue)
                 }
@@ -215,6 +216,28 @@ class Conductor: ObservableObject {
         }
     }
     
+    func restore() {
+        
+        for (countdownId, interval) in self.currentCountdowns {
+            if !self._delayedSoundPlayers.contains(where: { $0.key == countdownId }) {
+                
+                let context = PersistenceController.shared.container.viewContext
+                if let countdown = context.object(stringId: countdownId) as? Countdown {
+                    
+                    do {
+                        let soundFile = try SoundFile(fullName: countdown.soundName)
+                        let soundPlayer = try DelaySoundPlayer(timerID: countdownId, soundFile: soundFile)
+                        self._delayedSoundPlayers[countdown.stringId] = soundPlayer
+                        try soundPlayer.restore(for: interval.end, repeatCount: Int(countdown.repeatCount))
+                    } catch {
+                        Logger.error(error)
+                    }
+                }
+            }
+        }
+        
+    }
+    
     // MARK: - Cleanup
     
     func cleanup() {
@@ -273,9 +296,9 @@ class Conductor: ObservableObject {
     }
     
     func cancelSoundPlayer(id: TimerID) {
-        if let soundPlayer = self.delayedSoundPlayers[id] {
+        if let soundPlayer = self._delayedSoundPlayers[id] {
             soundPlayer.stop()
-            self.delayedSoundPlayers.removeValue(forKey: id)
+            self._delayedSoundPlayers.removeValue(forKey: id)
         }
     }
     

LeCountdown/LeCountdownApp.swift

@@ -72,6 +72,7 @@ struct LeCountdownApp: App {
                 case .active:
                     Logger.log("onChange(of: scenePhase) active")
                     Logger.log(Conductor.maestro.currentCountdowns.count)
+                    Conductor.maestro.restore()
                     Conductor.maestro.cleanup()
                 default:
                     break

LeCountdown/Model/Model+SharedExtensions.swift

@@ -7,6 +7,8 @@
 
 import Foundation
 
+typealias TimerID = String
+
 extension AbstractTimer {
     
     var displayName: String {

LeCountdown/Sound/DelaySoundPlayer.swift

@@ -10,44 +10,53 @@ import AVFoundation
 
 @objc class DelaySoundPlayer: NSObject, AVAudioPlayerDelegate {
     
-    fileprivate var _player: AVAudioPlayer?
+    fileprivate var _player: AVAudioPlayer
 
-    private var soundFile: SoundFile
+    fileprivate var _timerID: TimerID
     
-    init(soundFile: SoundFile) {
-        self.soundFile = soundFile
+    init(timerID: TimerID, soundFile: SoundFile) throws {
+        self._timerID = timerID
+        
+        guard let url = soundFile.url else {
+            throw SoundPlayerError.missingResourceError(file: soundFile)
+        }
+        
+        self._player = try AVAudioPlayer(contentsOf: url)
+    }
+    
+    func restore(for playDate: Date, repeatCount: Int) throws {
+        let timeLeft = playDate.timeIntervalSinceNow
+        try self._play(in: timeLeft, repeatCount: repeatCount)
     }
     
     func start(in duration: TimeInterval, repeatCount: Int) throws {
+        try self._play(in: duration, repeatCount: repeatCount)
+    }
+    
+    fileprivate func _play(in duration: TimeInterval, repeatCount: Int) throws {
         
-        guard let url = self.soundFile.url else {
-            throw SoundPlayerError.missingResourceError(file: self.soundFile)
-        }
-
         let audioSession: AVAudioSession = AVAudioSession.sharedInstance()
         try audioSession.setCategory(.playback, options: .duckOthers)
         try audioSession.setActive(true)
 
-        let player = try AVAudioPlayer(contentsOf: url)
-        player.prepareToPlay()
-        player.volume = 1.0
-        player.delegate = self
-        player.numberOfLoops = repeatCount
+        self._player.prepareToPlay()
+        self._player.volume = 1.0
+        self._player.delegate = self
+        self._player.numberOfLoops = repeatCount
         
-        self._player = player
+        self._player.play(atTime: self._player.deviceCurrentTime + duration)
 
-        player.play(atTime: player.deviceCurrentTime + duration)
     }
     
     func stop() {
-        self._player?.stop()
+        self._player.stop()
     }
     
     // MARK: - Delegate
-    
+
     func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
-        self.stop()
         Logger.log("audioPlayerDidFinishPlaying: successfully = \(flag)")
+        Conductor.maestro.cancelSoundPlayer(id: self._timerID)
     }
     
 }