Create Gong preference

app/src/main/java/com/bartlomiejpluta/ttsserver/ui/preference/Preference.kt

@@ -7,6 +7,8 @@ object PreferenceKey {
    const val ENABLE_SAY_ENDPOINT = "preference_enable_say_endpoint"
    const val ENABLE_WAVE_ENDPOINT = "preference_enable_wave_endpoint"
    const val ENABLE_SONOS_ENDPOINT = "preference_enable_sonos_endpoint"
+   const val ENABLE_GONG = "preference_enable_gong"
+   const val GONG = "preference_gong"
    const val TTS = "preference_tts"
    const val INVALIDATE_SONOS_CACHE = "preference_invalidate_sonos_cache"
 }

app/src/main/java/com/bartlomiejpluta/ttsserver/ui/preference/PreferencesFragment.kt

@@ -15,12 +15,14 @@ import com.bartlomiejpluta.R
 import com.bartlomiejpluta.ttsserver.service.foreground.ForegroundService
 import com.bartlomiejpluta.ttsserver.service.state.ServiceState
 
+
 class PreferencesFragment : PreferenceFragmentCompat() {
    private lateinit var portPreference: IntEditTextPreference
    private lateinit var sayEndpointPreference: SwitchPreference
    private lateinit var waveEndpointPreference: SwitchPreference
    private lateinit var sonosEndpointPreference: SwitchPreference
    private lateinit var httpDebugPreference: SwitchPreference
+   private lateinit var enableGongPreference: SwitchPreference
    private lateinit var ttsEnginePreference: Preference
    private lateinit var clearSonosCachePreference: Preference
 
@@ -35,6 +37,7 @@ class PreferencesFragment : PreferenceFragmentCompat() {
    private fun updateViewAccordingToServiceState(state: ServiceState) {
       portPreference.isEnabled = state == ServiceState.STOPPED
       sonosEndpointPreference.isEnabled = state == ServiceState.STOPPED
+      enableGongPreference.isEnabled = state == ServiceState.STOPPED
    }
 
    override fun onResume() {
@@ -60,6 +63,12 @@ class PreferencesFragment : PreferenceFragmentCompat() {
       sayEndpointPreference = findPreference(PreferenceKey.ENABLE_SAY_ENDPOINT)!!
       waveEndpointPreference = findPreference(PreferenceKey.ENABLE_WAVE_ENDPOINT)!!
       sonosEndpointPreference = findPreference(PreferenceKey.ENABLE_SONOS_ENDPOINT)!!
+      enableGongPreference = findPreference(PreferenceKey.ENABLE_GONG)!!
+      enableGongPreference.setOnPreferenceClickListener { preference ->
+         openFilePicker(preference)
+
+         true
+      }
       ttsEnginePreference = findPreference(PreferenceKey.TTS)!!
       ttsEnginePreference.setOnPreferenceClickListener {
          startActivity(Intent(ANDROID_TTS_SETTINGS))
@@ -67,14 +76,46 @@ class PreferencesFragment : PreferenceFragmentCompat() {
       }
       clearSonosCachePreference = findPreference(PreferenceKey.INVALIDATE_SONOS_CACHE)!!
       clearSonosCachePreference.setOnPreferenceClickListener {
-         context?.cacheDir?.listFiles() ?. forEach { it.delete() }
-         Toast.makeText(context, getString(R.string.preference_invalidate_sonos_cache_toast), Toast.LENGTH_SHORT).show()
+         context?.cacheDir?.listFiles()?.forEach { it.delete() }
+         Toast.makeText(
+            context,
+            getString(R.string.preference_invalidate_sonos_cache_toast),
+            Toast.LENGTH_SHORT
+         ).show()
          true
       }
       updateViewAccordingToServiceState(ForegroundService.state)
    }
 
+   private fun openFilePicker(preference: Preference?) {
+      if ((preference as SwitchPreference).isChecked) {
+         val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
+            .apply { type = "audio/x-wav" }
+            .let { Intent.createChooser(it, getString(R.string.preference_gong_picker_prompt)) }
+
+         startActivityForResult(intent, PICKFILE_RESULT_CODE)
+      }
+   }
+
+   override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+      when (requestCode) {
+         PICKFILE_RESULT_CODE -> updateGongPathPreference(resultCode, data)
+      }
+   }
+
+   private fun updateGongPathPreference(resultCode: Int, data: Intent?) {
+      enableGongPreference.isChecked = resultCode == -1
+
+      if (resultCode == -1) {
+         enableGongPreference.sharedPreferences?.edit()?.let { editor ->
+            editor.putString(PreferenceKey.GONG, data?.data?.toString())
+            editor.commit()
+         }
+      }
+   }
+
    companion object {
       private const val ANDROID_TTS_SETTINGS = "com.android.settings.TTS_SETTINGS"
+      private const val PICKFILE_RESULT_CODE = 1
    }
 }

app/src/main/res/values/strings.xml

@@ -25,6 +25,9 @@
     <string name="preference_enable_sonos_endpoint_title">Enable /sonos endpoint</string>
     <string name="preference_http_debug_summary">Attach the stacktrace to each error HTTP response if available</string>
     <string name="preference_http_debug_title">Enable HTTP debugging</string>
+    <string name="preference_gong_picker_prompt">Choose a gong file</string>
+    <string name="preference_enable_gong_summary">Play a signal gong before the announcement</string>
+    <string name="preference_enable_gong_title">Enable gong</string>
     <string name="preference_tts_summary">Go to platform\'s TTS engine settings and adjust its parameters</string>
     <string name="preference_tts_title">TTS engine settings</string>
     <string name="preference_invalidate_sonos_cache_summary">Clear application cache directory from already generated Sonos TTS data for given sentences. You typically want to do it when you change the TTS engine\'s voice settings.</string>

app/src/main/res/xml/preferences.xml

@@ -41,6 +41,12 @@
     </PreferenceCategory>
 
     <PreferenceCategory android:title="@string/preference_category_tts" app:iconSpaceReserved="false">
+        <SwitchPreference
+            android:defaultValue="false"
+            android:key="preference_enable_gong"
+            android:summary="@string/preference_enable_gong_summary"
+            android:title="@string/preference_enable_gong_title"
+            app:iconSpaceReserved="false" />
         <Preference
             android:key="preference_tts"
             android:summary="@string/preference_tts_summary"