chore: init

android/src/main/java/DuckPlugin.kt

@@ -0,0 +1,51 @@
+package de.cfp.duck
+
+import android.app.Activity
+import app.tauri.annotation.Command
+import app.tauri.annotation.InvokeArg
+import app.tauri.annotation.TauriPlugin
+import app.tauri.plugin.JSObject
+import app.tauri.plugin.Plugin
+import app.tauri.plugin.Invoke
+
+import android.media.AudioFocusRequest
+import android.media.AudioManager
+import android.context.Context
+import android.webkit.WebView
+
+@TauriPlugin
+class DuckPlugin(private val activity: Activity): Plugin(activity) {
+    private val implementation = Duck()
+    private lateinit var audioManager: AudioManager
+    private lateinit var focusRequest: AudioFocusRequest
+
+    override fun load(webView: WebView) {
+      audioManager = (AudioManager) getBridge().getActivity().getSystemService(Context.AUDIO_SERVICE)
+    }
+
+    @Command
+    fun duck(invoke: Invoke) {
+        focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK)
+          .setAcceptsDelayedFocusGain(false)
+          .setWillPauseWhenDucked(false)
+          .setForceDucking(true)
+          .build()
+        
+        audioManager.requestAudioFocus(focusRequest)
+
+        val ret = JSObject()
+        ret.put("success", true)
+        invoke.resolve(ret)
+    }
+
+    @Command
+    fun unduck(invoke: Invoke) {
+        if (focusRequest != null) {
+            audioManager.abandonAudioFocusRequest(focusRequest)
+        }
+
+        val ret = JSObject()
+        ret.put("success", true)
+        invoke.resolve(ret)
+    }
+}