Added Auto Rewind on Sleep Timer setting

android/app/src/main/java/com/audiobookshelf/app/data/DeviceClasses.kt

@@ -103,6 +103,8 @@ data class DeviceSettings(
   var autoSleepTimer: Boolean,
   var autoSleepTimerStartTime: String,
   var autoSleepTimerEndTime: String,
+  var autoSleepTimerAutoRewind: Boolean,
+  var autoSleepTimerAutoRewindTime: Long, //Time in milliseconds
   var sleepTimerLength: Long, // Time in milliseconds
   var disableSleepTimerFadeOut: Boolean,
   var disableSleepTimerResetFeedback: Boolean
@@ -123,6 +125,8 @@ data class DeviceSettings(
         autoSleepTimerStartTime = "22:00",
         autoSleepTimerEndTime = "06:00",
         sleepTimerLength = 900000L, // 15 minutes
+        autoSleepTimerAutoRewind = false,
+        autoSleepTimerAutoRewindTime = 300000L,
         disableSleepTimerFadeOut = false,
         disableSleepTimerResetFeedback = false
       )
@@ -142,6 +146,7 @@ data class DeviceSettings(
   @get:JsonIgnore
   val autoSleepTimerEndMinute get() = autoSleepTimerEndTime.split(":")[1].toInt()
 
+
   @JsonIgnore
   fun getShakeThresholdGravity() : Float { // Used in ShakeDetector
     return if (shakeSensitivity == ShakeSensitivitySetting.VERY_HIGH) 1.2f

android/app/src/main/java/com/audiobookshelf/app/managers/SleepTimerManager.kt

@@ -1,6 +1,7 @@
 package com.audiobookshelf.app.managers
 
 import android.content.Context
+import android.media.metrics.PlaybackSession
 import android.os.*
 import android.util.Log
 import com.audiobookshelf.app.device.DeviceManager
@@ -343,6 +344,10 @@ class SleepTimerManager constructor(private val playerNotificationService: Playe
       if (currentCalendar.after(startCalendar) && currentCalendar.before(endCalendar)) {
         Log.i(tag, "Current hour $currentHour is between ${deviceSettings.autoSleepTimerStartTime} and ${deviceSettings.autoSleepTimerEndTime} - starting sleep timer")
 
+        // Automatically Rewind in the book if settings is enabled
+        if (deviceSettings.autoSleepTimerAutoRewind) {
+          playerNotificationService.seekBackward(deviceSettings.autoSleepTimerAutoRewindTime)
+        }
         // Set sleep timer
         //   When sleepTimerLength is 0 then use end of chapter/track time
         if (deviceSettings.sleepTimerLength == 0L) {