Add volume enforcement for iOS

gdelataillade · Nov 1, 2024 · 4f781cd · 4f781cd
1 parent aed55f3
commit 4f781cd
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Showing 3 changed files with 26 additions and 7 deletions.
diff --git a/ios/Classes/AlarmConfiguration.swift b/ios/Classes/AlarmConfiguration.swift
@@ -7,17 +7,20 @@ class AlarmConfiguration {
     let loopAudio: Bool
     let fadeDuration: Double
     let volume: Float?
+    var volumeEnforced: Bool
+    var volumeEnforcementTimer: Timer?
     var triggerTime: Date?
     var audioPlayer: AVAudioPlayer?
     var timer: Timer?
     var task: DispatchWorkItem?
 
-    init(id: Int, assetAudio: String, vibrationsEnabled: Bool, loopAudio: Bool, fadeDuration: Double, volume: Float?) {
+    init(id: Int, assetAudio: String, vibrationsEnabled: Bool, loopAudio: Bool, fadeDuration: Double, volume: Float?, volumeEnforced: Bool) {
         self.id = id
         self.assetAudio = assetAudio
         self.vibrationsEnabled = vibrationsEnabled
         self.loopAudio = loopAudio
         self.fadeDuration = fadeDuration
         self.volume = volume
+        self.volumeEnforced = volumeEnforced
     }
 }
diff --git a/ios/Classes/SwiftAlarmPlugin.swift b/ios/Classes/SwiftAlarmPlugin.swift
@@ -104,7 +104,8 @@ public class SwiftAlarmPlugin: NSObject, FlutterPlugin {
             vibrationsEnabled: alarmSettings.vibrate,
             loopAudio: alarmSettings.loopAudio,
             fadeDuration: alarmSettings.fadeDuration,
-            volume: volumeFloat
+            volume: volumeFloat,
+            volumeEnforced: alarmSettings.volumeEnforced
         )
 
         self.alarms[id] = alarmConfig
@@ -290,6 +291,16 @@ public class SwiftAlarmPlugin: NSObject, FlutterPlugin {
         } else {
             audioPlayer.volume = 1.0
         }
+
+        if alarm.volumeEnforced {
+            alarm.volumeEnforcementTimer = Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { [weak self] timer in
+                guard let self = self else { return }
+                let currentSystemVolume = self.getSystemVolume()
+                if abs(currentSystemVolume - targetSystemVolume) > 0.01 {
+                    self.setVolume(volume: targetSystemVolume, enable: false)
+                }
+            }
+        }
     }
 
     private func getSystemVolume() -> Float {
@@ -341,6 +352,7 @@ public class SwiftAlarmPlugin: NSObject, FlutterPlugin {
             alarm.timer?.invalidate()
             alarm.task?.cancel()
             alarm.audioPlayer?.stop()
+            alarm.volumeEnforcementTimer?.invalidate()
             self.alarms.removeValue(forKey: id)
         }
 

diff --git a/ios/Classes/models/AlarmSettings.swift b/ios/Classes/models/AlarmSettings.swift
@@ -11,6 +11,7 @@ struct AlarmSettings: Codable {
     let warningNotificationOnKill: Bool
     let androidFullScreenIntent: Bool
     let notificationSettings: NotificationSettings
+    let volumeEnforced: Bool
 
     static func fromJson(json: [String: Any]) -> AlarmSettings? {
         guard let id = json["id"] as? Int,
@@ -29,10 +30,11 @@ struct AlarmSettings: Codable {
         let maxValidMicroseconds: Int64 = 9223372036854775 // Corresponding to year 2262
         let safeDateTimeMicros = min(dateTimeMicros, maxValidMicroseconds)
 
-        let dateTime = Date(timeIntervalSince1970: TimeInterval(safeDateTimeMicros) / 1_000_000)
-        let volume = json["volume"] as? Double
+        let dateTime: Date = Date(timeIntervalSince1970: TimeInterval(safeDateTimeMicros) / 1_000_000)
+        let volume: Double? = json["volume"] as? Double
         let notificationSettings = NotificationSettings.fromJson(json: notificationSettingsDict)
-
+        let volumeEnforced: Bool = json["volumeEnforced"] as? Bool ?? false
+
         return AlarmSettings(
             id: id,
             dateTime: dateTime,
@@ -43,7 +45,8 @@ struct AlarmSettings: Codable {
             fadeDuration: fadeDuration,
             warningNotificationOnKill: warningNotificationOnKill,
             androidFullScreenIntent: androidFullScreenIntent,
-            notificationSettings: notificationSettings
+            notificationSettings: notificationSettings,
+            volumeEnforced: volumeEnforced
         )
     }
 
@@ -63,10 +66,11 @@ struct AlarmSettings: Codable {
             "loopAudio": alarmSettings.loopAudio,
             "vibrate": alarmSettings.vibrate,
             "volume": alarmSettings.volume,
+            "volumeEnforced": alarmSettings.volumeEnforced,
             "fadeDuration": alarmSettings.fadeDuration,
             "warningNotificationOnKill": alarmSettings.warningNotificationOnKill,
             "androidFullScreenIntent": alarmSettings.androidFullScreenIntent,
             "notificationSettings": NotificationSettings.toJson(notificationSettings: alarmSettings.notificationSettings)
         ]
     }
-}
+}