hash-wallet/lib/ci_build_overlay.dart

import "package:cake_wallet/store/settings_store.dart";
import "package:flutter/material.dart";
import "package:flutter_mobx/flutter_mobx.dart";

class CiBuildOverlay extends StatelessWidget {
  const CiBuildOverlay({required this.child, this.settingsStore, super.key});

  static const _commit = String.fromEnvironment("CI_COMMIT");
  static const _branch = String.fromEnvironment("CI_BRANCH");
  static const isCiBuild = _commit != "" || _branch != "";

  final Widget child;
  final SettingsStore? settingsStore;

  @override
  Widget build(BuildContext context) {
    if (!isCiBuild) {
      return child;
    }

    final shortCommit = _commit.length > 7 ? _commit.substring(0, 7) : _commit;
    final label = [shortCommit, _branch].where((part) => part.isNotEmpty).join(" · ");

    return Stack(
      fit: StackFit.passthrough,
      textDirection: TextDirection.ltr,
      children: [
        child,
        Positioned(
          top: 0,
          left: 0,
          right: 0,
          child: Observer(
            builder: (_) => settingsStore?.showCiBuildOverlay ?? true
                ? IgnorePointer(
                    child: ExcludeSemantics(
                      child: SafeArea(
                        bottom: false,
                        child: ColoredBox(
                          color: Colors.black54,
                          child: Text(
                            label,
                            textAlign: TextAlign.center,
                            textDirection: TextDirection.ltr,
                            textScaler: TextScaler.noScaling,
                            maxLines: 1,
                            overflow: TextOverflow.ellipsis,
                            style: const TextStyle(color: Colors.white, fontSize: 10),
                          ),
                        ),
                      ),
                    ),
                  )
                : const SizedBox.shrink(),
          ),
        ),
      ],
    );
  }
}