Support prefers backup

app/src/main/java/com/fongmi/android/tv/db/AppDatabase.java

@@ -25,6 +25,7 @@ import com.fongmi.android.tv.db.dao.SiteDao;
 import com.fongmi.android.tv.db.dao.TrackDao;
 import com.fongmi.android.tv.utils.Util;
 import com.github.catvod.utils.Path;
+import com.github.catvod.utils.Prefers;
 
 import java.io.File;
 import java.text.SimpleDateFormat;
@@ -57,6 +58,7 @@ public abstract class AppDatabase extends RoomDatabase {
             if (db.exists()) Path.copy(db, new File(Path.tv(), db.getName()));
             if (wal.exists()) Path.copy(wal, new File(Path.tv(), wal.getName()));
             if (shm.exists()) Path.copy(shm, new File(Path.tv(), shm.getName()));
+            Prefers.backup(new File(Path.tv(), NAME + "-pref"));
             App.post(callback::success);
         });
     }
@@ -66,9 +68,11 @@ public abstract class AppDatabase extends RoomDatabase {
             File db = new File(Path.tv(), NAME);
             File wal = new File(Path.tv(), NAME + "-wal");
             File shm = new File(Path.tv(), NAME + "-shm");
+            File pref = new File(Path.tv(), NAME + "-pref");
             if (db.exists()) Path.move(db, App.get().getDatabasePath(db.getName()).getAbsoluteFile());
             if (wal.exists()) Path.move(wal, App.get().getDatabasePath(wal.getName()).getAbsoluteFile());
             if (shm.exists()) Path.move(shm, App.get().getDatabasePath(shm.getName()).getAbsoluteFile());
+            if (pref.exists()) Prefers.restore(pref);
             App.post(callback::success);
         });
     }

catvod/src/main/java/com/github/catvod/utils/Prefers.java

@@ -5,6 +5,14 @@ import android.content.SharedPreferences;
 import androidx.preference.PreferenceManager;
 
 import com.github.catvod.Init;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.ToNumberPolicy;
+import com.google.gson.internal.LazilyParsedNumber;
+import com.google.gson.reflect.TypeToken;
+
+import java.io.File;
+import java.util.Map;
 
 public class Prefers {
 
@@ -12,6 +20,17 @@ public class Prefers {
         return PreferenceManager.getDefaultSharedPreferences(Init.context());
     }
 
+    public static void backup(File file) {
+        Path.write(file, new Gson().toJson(getPrefers().getAll()).getBytes());
+    }
+
+    public static void restore(File file) {
+        Gson gson = new GsonBuilder().setObjectToNumberStrategy(ToNumberPolicy.LAZILY_PARSED_NUMBER).create();
+        Map<String, Object> map = gson.fromJson(Path.read(file), new TypeToken<Map<String, Object>>() {}.getType());
+        if (map != null) for (Map.Entry<String, ?> entry : map.entrySet()) Prefers.put(entry.getKey(), entry.getValue());
+        Path.clear(file);
+    }
+
     public static String getString(String key) {
         return getString(key, "");
     }
@@ -48,6 +67,8 @@ public class Prefers {
             getPrefers().edit().putInt(key, (Integer) obj).apply();
         } else if (obj instanceof Long) {
             getPrefers().edit().putLong(key, (Long) obj).apply();
+        } else if (obj instanceof LazilyParsedNumber) {
+            getPrefers().edit().putInt(key, ((LazilyParsedNumber) obj).intValue()).apply();
         }
     }