import 'package:flutter/foundation.dart' show kIsWeb;

const String _apiBaseUrlFromEnvironment = String.fromEnvironment(
  'API_BASE_URL',
  defaultValue: 'http://localhost:3000',
);

bool _isLocalDevHost(String host) {
  final String h = host.toLowerCase();
  return h == 'localhost' || h == '127.0.0.1';
}

/// Base URL for the Cyber Hybrid Hub API (Postgres-backed).
///
/// Local: `flutter run --dart-define=API_BASE_URL=http://localhost:3000`
///
/// Production web (https://cyberhybridhub.com): always [Uri.base.origin] so
/// /v1 and /hubs hit HAProxy on :443 — never :3000 over HTTP (mixed content).
String get apiBaseUrl {
  if (!kIsWeb) {
    return _apiBaseUrlFromEnvironment;
  }

  final Uri page = Uri.base;
  if (_isLocalDevHost(page.host)) {
    return _apiBaseUrlFromEnvironment;
  }

  return page.origin;
}

/// SignalR hub for real-time incoming questions.
String get questionsHubUrl => '$apiBaseUrl/hubs/questions';