import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:intl/intl.dart';
import 'package:ristoris/core/utils.dart';
import '../../../providers/auth_provider.dart';
import '../../../providers/database_provider.dart';
import '../../../database/database.dart';
import '../../widgets/empty_state.dart';

final paymentsProvider =
    FutureProvider.family<List<VScadenzeData>, int>((ref, idAgente) {
  return ref.read(scadenzeDaoProvider).getScadenzePerAgente(idAgente);
});

class PaymentsPage extends ConsumerWidget {
  const PaymentsPage({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final agente = ref.watch(authProvider).agente;
    final paysAsync =
        agente != null ? ref.watch(paymentsProvider(agente.idAgente)) : null;

    return Scaffold(
      appBar: AppBar(title: const Text('Scadenze')),
      body: SafeArea(
        child: paysAsync?.when(
              data: (pays) {
                if (pays.isEmpty)
                  return const EmptyState(
                      icon: Icons.account_balance_wallet_outlined,
                      title: 'Nessuna scadenza');
                return ListView.builder(
                  itemCount: pays.length,
                  itemBuilder: (_, i) => _ScadenzaCard(scadenza: pays[i]),
                );
              },
              loading: () => const Center(child: CircularProgressIndicator()),
              error: (e, _) => Center(child: Text('Errore: $e')),
            ) ??
            const Center(child: CircularProgressIndicator()),
      ),
    );
  }
}

class _ScadenzaCard extends StatelessWidget {
  final VScadenzeData scadenza;
  const _ScadenzaCard({required this.scadenza});

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final importo = scadenza.importoScadenza ?? 0;
    final scaduta = scadenza.dataScadenza != null &&
        DateTime.parse(scadenza.dataScadenza!).isBefore(DateTime.now());

    return Card(
      margin: const EdgeInsets.symmetric(horizontal: 12, vertical: 3),
      color: scaduta ? Colors.red.shade50 : null,
      child: ListTile(
        leading: CircleAvatar(
          backgroundColor: scaduta
              ? Colors.red.shade100
              : theme.colorScheme.primaryContainer,
          child: Icon(Icons.account_balance_wallet_outlined,
              color: scaduta ? Colors.red : theme.colorScheme.primary),
        ),
        title: Text('Documento ${scadenza.numPartita ?? ""}'),
        subtitle: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            if (scadenza.ragioneSociale != null)
              Text(
                scadenza.ragioneSociale!,
                style: theme.textTheme.bodyMedium
                    ?.copyWith(fontWeight: FontWeight.w500),
              ),
            if (scadenza.codCliente != null)
              Text('Cod. ${scadenza.codCliente}',
                  style: theme.textTheme.bodySmall),
            Text('Scadenza: ${Utils.formatDate(scadenza.dataScadenza)}'),
          ],
        ),
        trailing: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.end,
          children: [
            Text(
                NumberFormat.currency(locale: 'it', symbol: '€')
                    .format(importo),
                style: theme.textTheme.titleSmall
                    ?.copyWith(fontWeight: FontWeight.bold)),
            if (scaduta)
              Container(
                padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
                decoration: BoxDecoration(
                    color: Colors.red, borderRadius: BorderRadius.circular(8)),
                child: const Text('SCADUTA',
                    style: TextStyle(color: Colors.white, fontSize: 10)),
              ),
          ],
        ),
      ),
    );
  }
}