132 lines
4.6 KiB
Dart
132 lines
4.6 KiB
Dart
import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'app/app.dart';
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import 'core/services/sound_service.dart';
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import 'core/theme/app_colors.dart';
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import 'core/theme/app_dimens.dart';
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import 'data/datasources/local_store.dart';
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Future<void> main() async {
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WidgetsFlutterBinding.ensureInitialized();
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await _configureChrome();
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// Startup work must never be able to prevent runApp from being reached.
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// Awaiting it unguarded means one thrown exception leaves a blank window
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// with nothing on screen to explain why.
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try {
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// Opens SQLite and loads the catalogue into memory. Bills written on a
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// previous run are still on disk and still counted as unsynced.
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await LocalStore.instance.init();
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await SoundService.instance.preload();
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} catch (error, stack) {
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debugPrint('Startup failed: $error\n$stack');
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runApp(_StartupFailureApp(error: error));
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return;
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}
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runApp(const ProviderScope(child: NearlePosApp()));
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}
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/// Locks the terminal into landscape and hides the system bars.
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///
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/// Both calls are Android/iOS only. On desktop the window manager owns sizing
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/// and chrome, so we skip them — invoking them there is at best a no-op and can
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/// raise a MissingPluginException on some engine builds.
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Future<void> _configureChrome() async {
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final isMobile = defaultTargetPlatform == TargetPlatform.android ||
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defaultTargetPlatform == TargetPlatform.iOS;
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if (kIsWeb || !isMobile) return;
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await SystemChrome.setPreferredOrientations([
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DeviceOrientation.landscapeLeft,
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DeviceOrientation.landscapeRight,
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]);
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await SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
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}
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/// Shown when the terminal cannot start.
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///
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/// A cashier staring at a white window has nothing to report to support, so
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/// the failure is put on screen verbatim.
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class _StartupFailureApp extends StatelessWidget {
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const _StartupFailureApp({required this.error});
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final Object error;
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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debugShowCheckedModeBanner: false,
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home: Scaffold(
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backgroundColor: AppColors.background,
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body: Center(
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(AppSpacing.xxl),
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 560),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Container(
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width: 56,
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height: 56,
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decoration: BoxDecoration(
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color: AppColors.dangerSurface,
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borderRadius: AppRadius.brMd,
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),
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child: const Icon(Icons.error_outline_rounded,
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color: AppColors.danger, size: 28),
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),
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const SizedBox(height: AppSpacing.xl),
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const Text(
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'Nearle POS could not start',
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style: TextStyle(
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fontSize: 22,
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fontWeight: FontWeight.w700,
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color: AppColors.textPrimary,
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),
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),
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const SizedBox(height: AppSpacing.sm),
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const Text(
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'The terminal failed while opening its local database.',
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style: TextStyle(
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fontSize: 14,
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color: AppColors.textSecondary,
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height: 1.5,
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),
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),
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const SizedBox(height: AppSpacing.xl),
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Container(
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width: double.infinity,
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padding: const EdgeInsets.all(AppSpacing.lg),
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decoration: BoxDecoration(
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color: AppColors.surface,
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borderRadius: AppRadius.brMd,
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border: Border.all(color: AppColors.border),
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),
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child: SelectableText(
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'$error',
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style: const TextStyle(
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fontSize: 12.5,
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height: 1.6,
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fontFamily: 'monospace',
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color: AppColors.textPrimary,
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),
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),
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),
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],
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),
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),
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),
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),
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),
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);
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}
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}
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