feat(mobile): add background playback and wake lock support, bump version to 1.3.1

frontend/android/app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "com.streamflix.app"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 9
-        versionName "1.0.9"
+        versionCode 10
+        versionName "1.3.1"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         aaptOptions {
              // Files and dirs to omit from the packaged assets dir, modified to accommodate modern web apps.

frontend/android/app/src/main/AndroidManifest.xml

@@ -43,4 +43,5 @@
     <!-- Permissions -->
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 </manifest>

frontend/android/app/src/main/java/com/streamflix/app/MainActivity.java

@@ -1,5 +1,35 @@
 package com.streamflix.app;
 
+import android.os.Bundle;
+import android.view.WindowManager;
+import android.os.PowerManager;
+import android.content.Context;
 import com.getcapacitor.BridgeActivity;
 
-public class MainActivity extends BridgeActivity {}
+public class MainActivity extends BridgeActivity {
+    private PowerManager.WakeLock wakeLock;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // Prevent screen from turning off while app is in foreground
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+
+        // Initialize CPU wake lock to keep processor active when screen is manually
+        // turned off
+        PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
+        if (powerManager != null) {
+            wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "StreamFlix::PlaybackWakeLock");
+            wakeLock.acquire();
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (wakeLock != null && wakeLock.isHeld()) {
+            wakeLock.release();
+        }
+    }
+}