Add core/java/pawletos/device/PawletSystem.java

core/java/pawletos/device/PawletSystem.java

@@ -0,0 +1,79 @@
+package pawletos.device.system;
+
+import android.content.Context;
+import android.os.Build;
+import android.os.SystemProperties;
+
+/**
+ * PawletOS System API for system apps (OTA, device management, etc.)
+ */
+public class PawletSystem {
+    private static final double PAWLET_SDK_VERSION = 1.0;
+
+    /**
+     * Check if running on an emulator.
+     */
+    public static boolean isEmulator() {
+        String fingerprint = Build.FINGERPRINT;
+        String model = Build.MODEL;
+        String manufacturer = Build.MANUFACTURER;
+        String brand = Build.BRAND;
+        String device = Build.DEVICE;
+        String product = Build.PRODUCT;
+        return fingerprint != null && (fingerprint.startsWith("generic") || fingerprint.startsWith("unknown"))
+            || model != null && model.contains("google_sdk")
+            || model != null && model.contains("Emulator")
+            || model != null && model.contains("Android SDK built for x86")
+            || manufacturer != null && manufacturer.contains("Genymotion")
+            || brand != null && brand.startsWith("generic") && device != null && device.startsWith("generic")
+            || product != null && product.equals("google_sdk");
+    }
+
+    /**
+     * Basic check if device is rooted.
+     */
+    public static boolean isRooted() {
+        String buildTags = Build.TAGS;
+        if (buildTags != null && buildTags.contains("test-keys")) {
+            return true;
+        }
+        try {
+            java.io.File file = new java.io.File("/system/app/Superuser.apk");
+            if (file.exists()) {
+                return true;
+            }
+        } catch (Exception e) {
+            // ignore
+        }
+        return false;
+    }
+
+    /**
+     * Get the current language/locale.
+     */
+    public static String getCurrentLocale(Context ctx) {
+        java.util.Locale locale;
+        if (android.os.Build.VERSION.SDK_INT >= 24) {
+            locale = ctx.getResources().getConfiguration().getLocales().get(0);
+        } else {
+            locale = ctx.getResources().getConfiguration().locale;
+        }
+        return locale.toString();
+    }
+
+    /**
+     * Check if device is running PawletOS.
+     * Returns true if running on PawletOS, false otherwise.
+     */
+    public static boolean isPawletOS() {
+        return "Pawlet".equalsIgnoreCase(Build.MANUFACTURER)
+            || "PawletOS".equalsIgnoreCase(SystemProperties.get("ro.oxmc.os_name", ""));
+    }
+
+    /**
+     * Get the PawletSDK version.
+     */
+    public static double getPawletSDKVersion() {
+        return PAWLET_SDK_VERSION;
+    }
+}