import 'package:flutter/material.dart';

import 'package:go_router/go_router.dart';

import 'package:provider/provider.dart';

import 'package:pshared/models/payment/payment.dart';
import 'package:pshared/models/payment/status.dart';
import 'package:pshared/provider/payment/payments.dart';

import 'package:pweb/app/router/payout_routes.dart';
import 'package:pweb/pages/report/details/content.dart';
import 'package:pweb/pages/report/details/states/error.dart';
import 'package:pweb/pages/report/details/states/not_found.dart';
import 'package:pweb/utils/report/download_act.dart';
import 'package:pweb/utils/report/payment_mapper.dart';

import 'package:pweb/generated/i18n/app_localizations.dart';


class PaymentDetailsPage extends StatelessWidget {
  final String paymentId;

  const PaymentDetailsPage({
    super.key,
    required this.paymentId,
  });

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(16),
      child: Consumer<PaymentsProvider>(
        builder: (context, provider, child) {
          final loc = AppLocalizations.of(context)!;
          if (provider.isLoading) {
            return const Center(child: CircularProgressIndicator());
          }

          if (provider.error != null) {
            return PaymentDetailsError(
              message: provider.error?.toString() ?? loc.noErrorInformation,
              onRetry: () => provider.refresh(),
            );
          }

          final payment = _findPayment(provider.payments, paymentId);
          if (payment == null) {
            return PaymentDetailsNotFound(onBack: () => _handleBack(context));
          }

          final status = statusFromPayment(payment);
          final paymentRef = payment.paymentRef ?? '';
          final canDownload = status == OperationStatus.success &&
              paymentRef.trim().isNotEmpty;

          return PaymentDetailsContent(
            payment: payment,
            onBack: () => _handleBack(context),
            onDownloadAct: canDownload
                ? () => downloadPaymentAct(context, paymentRef)
                : null,
          );
        },
      ),
    );
  }

  Payment? _findPayment(List<Payment> payments, String paymentId) {
    final trimmed = paymentId.trim();
    if (trimmed.isEmpty) return null;
    for (final payment in payments) {
      if (payment.paymentRef == trimmed) return payment;
      if (payment.idempotencyKey == trimmed) return payment;
    }
    return null;
  }

  void _handleBack(BuildContext context) {
    final router = GoRouter.of(context);
    if (router.canPop()) {
      context.pop();
      return;
    }
    context.go(PayoutRoutes.reportsPath);
  }
}