import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import '../../../core/pairing/pairing_notifier.dart';

/// Terminal failed-pairing screen.
///
/// Reached when the pairing notifier transitions to [PairingFailedData]
/// (terminal — payment session is `failed_pairing` server-side, audit row
/// recorded). Copy is intentionally identical regardless of `cause_tag` for
/// now (the design pass will revise this later).
///
/// Single CTA "Kembali ke beranda" resets the pairing notifier and routes
/// home. PopScope falls back to home for deep-link entry per project memory
/// rule "Deep-link pop fallback".
class NoBestieScreen extends ConsumerWidget {
  const NoBestieScreen({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    return PopScope(
      canPop: true,
      onPopInvokedWithResult: (didPop, _) {
        if (!didPop) return;
        ref.read(pairingProvider.notifier).reset();
      },
      child: Scaffold(
        body: SafeArea(
          child: Center(
            child: Padding(
              padding: const EdgeInsets.all(32),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  const Icon(Icons.sentiment_dissatisfied, size: 80, color: Colors.orange),
                  const SizedBox(height: 24),
                  const Text(
                    'Belum berhasil terhubung',
                    style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold),
                  ),
                  const SizedBox(height: 12),
                  const Text(
                    'Maaf, kami tidak bisa menemukan bestie untuk sesimu. '
                    'Tim kami akan menghubungimu segera.',
                    textAlign: TextAlign.center,
                    style: TextStyle(fontSize: 16, color: Colors.grey),
                  ),
                  const SizedBox(height: 48),
                  ElevatedButton(
                    style: ElevatedButton.styleFrom(
                      padding: const EdgeInsets.symmetric(horizontal: 32, vertical: 14),
                    ),
                    onPressed: () {
                      ref.read(pairingProvider.notifier).reset();
                      context.go('/home');
                    },
                    child: const Text('Kembali ke beranda'),
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}