fix: add info text when no data

app/src/main/java/cc/n0th1ng/tripmoney/data/TripDatabase.kt

@@ -49,8 +49,6 @@ abstract class TripDatabase : RoomDatabase() {
 @Module
 @InstallIn(SingletonComponent::class)
 object DatabaseModule {
-
-
     @RequiresApi(Build.VERSION_CODES.O)
     @Provides
     @Singleton
@@ -140,12 +138,12 @@ private class DatabasePrepopulator(
                 currency = "USD"
             )
         )
-        for (category in sampleCategories) {
-            categoryDao.insert(category)
-        }
-        for (expense in sampleExpenses) {
-            expenseDao.insert(expense)
-        }
+//        for (category in sampleCategories) {
+//            categoryDao.insert(category)
+//        }
+//        for (expense in sampleExpenses) {
+//            expenseDao.insert(expense)
+//        }
 
 
     }

app/src/main/java/cc/n0th1ng/tripmoney/data/entity/Trip.kt

@@ -19,6 +19,10 @@ data class Trip(
     @ColumnInfo("currency") val currency: String,
     @ColumnInfo("budget") val budget: Double = 0.0
 ) {
+    fun isDummy(): Boolean {
+        return this.id == -1
+    }
+
     companion object {
         @RequiresApi(Build.VERSION_CODES.O)
         val DUMMY = Trip(