voice: "pause" keeps the music paused after the mic lets go

gearslip/src/main/java/app/seb3thehacker/gearslip/car/AssistantCommands.kt

@@ -2,6 +2,7 @@ package app.seb3thehacker.gearslip.car
 
 import android.content.Context
 import app.seb3thehacker.gearslip.media.CarMedia
+import app.seb3thehacker.gearslip.speech.VoiceFocus
 import java.text.DateFormat
 import java.util.Date
 import kotlinx.coroutines.Dispatchers
@@ -215,7 +216,8 @@ object AssistantCommands {
         val media = CarServices.media
         return when {
             "pause" in heard || heard.startsWith("stop") || heard == "quiet" || heard == "shut up" -> {
-                if (media.now.value.playing) media.togglePlay()
+                media.pause()
+                VoiceFocus.afterRelease { media.pause() }
                 "Paused."
             }
             "resume" in heard || "unpause" in heard || heard in RESUME_PHRASES ||

gearslip/src/main/java/app/seb3thehacker/gearslip/media/CarMedia.kt

@@ -433,6 +433,12 @@ class CarMedia(private val context: Context) {
         val controls = controller?.transportControls ?: return
         if (_now.value.playing) controls.pause() else controls.play()
     }
+    /**
+     * Pauses whatever the app thinks it's doing. Voice pauses the music to listen, so by the time
+     * "pause" is heard the app already looks stopped; a toggle did nothing and the song came back
+     * as soon as the microphone let go. A real pause tells the app to stay stopped.
+     */
+    fun pause() = controller?.transportControls?.pause()
     fun next() = controller?.transportControls?.skipToNext()
     fun previous() = controller?.transportControls?.skipToPrevious()
     fun seek(ms: Long) = controller?.transportControls?.seekTo(ms)

gearslip/src/main/java/app/seb3thehacker/gearslip/speech/VoiceFocus.kt

@@ -19,17 +19,35 @@ import app.seb3thehacker.gearslip.GearslipLog
 object VoiceFocus {
 
     private const val RELEASE_DELAY_MS = 1_500L
+    private const val AFTER_RELEASE_MS = 300L
 
     private val main = Handler(Looper.getMainLooper())
     private var request: AudioFocusRequest? = null
     private var audio: AudioManager? = null
     private var holders = 0
+    private val afterRelease = mutableListOf<() -> Unit>()
 
     private val releaseNow = Runnable {
-        val r = request ?: return@Runnable
-        audio?.abandonAudioFocusRequest(r)
-        request = null
-        GearslipLog.i("voice: gave audio focus back")
+        request?.let { r ->
+            audio?.abandonAudioFocusRequest(r)
+            request = null
+            GearslipLog.i("voice: gave audio focus back")
+        }
+        val pending = afterRelease.toList()
+        afterRelease.clear()
+        // Just after the music app has had its focus back and acted on it.
+        if (pending.isNotEmpty()) main.postDelayed({ pending.forEach { it() } }, AFTER_RELEASE_MS)
+    }
+
+    /**
+     * Runs [action] once the music has its focus back, or now if Gearslip isn't holding it.
+     * Metrolist takes a pause sent while it's held as nothing and resumes when focus returns,
+     * so "pause" sends it again from here.
+     */
+    fun afterRelease(action: () -> Unit) {
+        main.post {
+            if (request == null && holders == 0) action() else afterRelease += action
+        }
     }
 
     /** Pauses the music until a matching [release]. Safe from any thread. */