import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

final themeModeProvider = NotifierProvider<ThemeModeController, ThemeMode>(
  ThemeModeController.new,
);

/// Holds the local display preference for the current application session.
///
/// It intentionally starts at the system preference. Persisting an operator's
/// visual preference can be added later without coupling it to vehicle state.
class ThemeModeController extends Notifier<ThemeMode> {
  @override
  ThemeMode build() => ThemeMode.system;

  void select(ThemeMode mode) => state = mode;
}