import 'package:flutter/material.dart';

import 'package:pshared/models/payment/payment.dart';
import 'package:pshared/models/payment/fx/quote.dart';
import 'package:pshared/utils/currency.dart';

import 'package:pweb/pages/report/details/section.dart';
import 'package:pweb/pages/report/details/sections/rows.dart';

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


class PaymentFxSection extends StatelessWidget {
  final Payment payment;

  const PaymentFxSection({
    super.key,
    required this.payment,
  });

  @override
  Widget build(BuildContext context) {
    final loc = AppLocalizations.of(context)!;
    final fx = payment.lastQuote?.fxQuote;
    final rows = buildDetailRows([
      DetailValue(
        label: loc.fxRateLabel,
        value: _formatRate(fx),
      ),
    ]);

    return DetailsSection(
      title: loc.paymentDetailsFx,
      children: rows,
    );
  }

  String? _formatRate(FxQuote? fx) {
    if (fx == null) return null;
    final price = fx.price?.trim();
    if (price == null || price.isEmpty) return null;

    final base = _firstNonEmpty([
      currencySymbolFromCode(fx.baseCurrency),
      currencySymbolFromCode(fx.baseAmount?.currency),
      fx.baseCurrency,
      fx.baseAmount?.currency,
    ]);
    final quote = _firstNonEmpty([
      currencySymbolFromCode(fx.quoteCurrency),
      currencySymbolFromCode(fx.quoteAmount?.currency),
      fx.quoteCurrency,
      fx.quoteAmount?.currency,
    ]);

    if (base == null || quote == null) {
      return price;
    }

    return '1 $base = $price $quote';
  }

  String? _firstNonEmpty(List<String?> values) {
    for (final value in values) {
      final trimmed = value?.trim();
      if (trimmed != null && trimmed.isNotEmpty) return trimmed;
    }
    return null;
  }
}