import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shuffle/core/l10n/l10n.dart';
import 'package:shuffle/core/theme/app_spacing.dart';
import 'package:shuffle/features/auth/presentation/providers/sign_in_prompt_provider.dart';
import 'package:shuffle/features/auth/presentation/widgets/sign_in_prompt.dart';

/// Platzhalter-Startseite. Wird durch die Katalogsuche bzw. QUE-09 ersetzt.
///
/// Liest nur [showSignInPromptProvider]; die Entscheidung, ob der
/// Anmelde-Hinweis erscheint, liegt dort (Spec #49 § 5.1).
class HomeScreen extends ConsumerWidget {
  const HomeScreen({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final l10n = context.l10n;
    final showPrompt = ref.watch(showSignInPromptProvider);
    return Scaffold(
      key: const Key('home_screen'),
      appBar: AppBar(title: Text(l10n.appTitle)),
      body: SafeArea(
        child: LayoutBuilder(
          builder: (context, constraints) => SingleChildScrollView(
            padding: AppSpacing.pagePadding(constraints.maxWidth),
            child: ConstrainedBox(
              constraints: BoxConstraints(
                minHeight: constraints.maxHeight - AppSpacing.lg * 2,
                minWidth: constraints.maxWidth,
              ),
              child: Center(
                child: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    Text(
                      l10n.homePlaceholderMessage,
                      key: const Key('home_placeholder_message'),
                      textAlign: TextAlign.center,
                    ),
                    if (showPrompt) ...[
                      const SizedBox(height: AppSpacing.xl),
                      const SignInPrompt(),
                    ],
                  ],
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}