paperless-mobile/lib/features/settings/view/widgets/user_avatar.dart

import 'package:flutter/material.dart';
import 'package:paperless_mobile/core/database/tables/local_user_account.dart';

class UserAvatar extends StatelessWidget {
  final LocalUserAccount account;

  const UserAvatar({
    super.key,
    required this.account,
  });

  @override
  Widget build(BuildContext context) {
    final backgroundColor =
        Colors.primaries[account.id.hashCode % Colors.primaries.length];
    final foregroundColor =
        backgroundColor.computeLuminance() > 0.5 ? Colors.black : Colors.white;
    return Container(
      decoration: BoxDecoration(
        shape: BoxShape.circle,
        border: Border.all(
          color: backgroundColor.shade900.withOpacity(0.4),
          width: 2,
        ),
      ),
      child: CircleAvatar(
        child: Text(
          (account.paperlessUser.fullName ?? account.paperlessUser.username)
              .split(" ")
              .take(2)
              .map((e) => e.substring(0, 1))
              .map((e) => e.toUpperCase())
              .join(""),
        ),
        backgroundColor: backgroundColor,
        foregroundColor: foregroundColor,
      ),
    );
  }
}