fnotes/lib/persisted_brightness.dart

import 'package:flutter/material.dart';

class PersistedBrightness {
  final String brightness;

  PersistedBrightness(this.brightness);

  factory PersistedBrightness.fromFlutterBrightness(Brightness brightness) {
    var persistedBrightness = "light";

    if (brightness == Brightness.dark) {
      persistedBrightness = "dark";
    }

    return PersistedBrightness(persistedBrightness);
  }

  Brightness toFlutterBrightness() {
    Brightness flutterBrightness = Brightness.light;

    if (brightness == "dark") {
      flutterBrightness = Brightness.dark;
    }

    return flutterBrightness;
  }

  @override
  String toString() => brightness;

  PersistedBrightness toOpposite() {
    var newBrightness = "light";

    if (brightness == "light") {
      newBrightness = "dark";
    }

    return PersistedBrightness(newBrightness);
  }
}