OpenContacts/lib/models/users/online_status.dart

import 'package:flutter/material.dart';

enum OnlineStatus {
  offline,
  invisible,
  away,
  busy,
  online,
  sociable;

  static final List<Color> _colors = [
    Colors.transparent,
    Colors.grey,
    Colors.yellow,
    Colors.red,
    Colors.green,
    Colors.blue,
  ];

  Color color(BuildContext context) => this == OnlineStatus.offline || this == OnlineStatus.invisible
      ? Theme.of(context).colorScheme.onSecondaryContainer.withAlpha(150)
      : _colors[index];

  factory OnlineStatus.fromString(String? text) {
    return OnlineStatus.values.firstWhere(
      (element) => element.name.toLowerCase() == text?.toLowerCase(),
      orElse: () => OnlineStatus.online,
    );
  }

  int compareTo(OnlineStatus other) {
    if (this == other) return 0;
    if (this == OnlineStatus.sociable) return -1;
    if (other == OnlineStatus.sociable) return 1;
    if (this == OnlineStatus.online) return -1;
    if (other == OnlineStatus.online) return 1;
    if (this == OnlineStatus.away) return -1;
    if (other == OnlineStatus.away) return 1;
    if (this == OnlineStatus.busy) return -1;
    if (other == OnlineStatus.busy) return 1;
    return 0;
  }
}