import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../../../core/theme/app_theme.dart';
import '../../../../core/widgets/glass_container.dart';
import '../../../../core/widgets/shimmer_loading.dart';
import '../../../../core/widgets/status_badge.dart';
import '../../bloc/fundamentals/asset_fundamentals_bloc.dart';
import '../../bloc/fundamentals/asset_fundamentals_event.dart';
import '../../bloc/fundamentals/asset_fundamentals_state.dart';
import '../../models/fundamental_data_model.dart';
import '../../utils/metric_explanations.dart';

class FundamentalsTab extends StatefulWidget {
  final String isin;
  final String? symbol;
  final bool isEmbedded;

  const FundamentalsTab({
    super.key,
    this.symbol,
    this.isEmbedded = false,
    required this.isin,
  });

  @override
  State<FundamentalsTab> createState() => _FundamentalsTabState();
}

class _FundamentalsTabState extends State<FundamentalsTab> {
  String _sym = '\$';
  String _curCode = 'USD';

  @override
  void initState() {
    super.initState();
  }

  @override
  void didUpdateWidget(covariant FundamentalsTab oldWidget) {
    super.didUpdateWidget(oldWidget);
  }

  @override
  Widget build(BuildContext context) {
    return BlocBuilder<AssetFundamentalsBloc, AssetFundamentalsState>(
      builder: (context, state) {
        if (state is AssetFundamentalsLoading) {
          return _buildFundamentalsShimmer(context);
        }

        if (state is AssetFundamentalsError) {
          return Center(
            child: GlassContainer(
              padding: const EdgeInsets.all(24),
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  Icon(Icons.error_outline, color: AppTheme.accentRed, size: 48),
                  const SizedBox(height: 12),
                  Text('Fehler beim Laden der Fundamentaldaten: ${state.message}', style: const TextStyle(color: Colors.white70)),
                  const SizedBox(height: 16),
                  ElevatedButton.icon(
                    onPressed: () => context.read<AssetFundamentalsBloc>().add(LoadAssetFundamentals(widget.isin, ticker: widget.symbol, forceRefresh: true)),
                    icon: const Icon(Icons.refresh),
                    label: const Text('Erneut versuchen'),
                  ),
                ],
              ),
            ),
          );
        }

        if (state is AssetFundamentalsLoaded) {
          final data = state.data;
          if (data != null) {
            _sym = _getCurrencySymbol(data.ticker);
            _curCode = _getCurrencyCode(data.ticker);
          }
          if (data == null) {
            return _buildEmptyState();
          }

          return SingleChildScrollView(
            physics: widget.isEmbedded ? const NeverScrollableScrollPhysics() : null,
            padding: const EdgeInsets.all(16),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                // 1. Analyst Forecasts & Price Targets Header Card
                _buildPriceTargetCard(data),
                const SizedBox(height: 20),

                // 2. Responsive Side-by-Side Category List Panels (Valuation, Profitability, Dividends)
                _buildCategoryPanels(data),
                const SizedBox(height: 20),

                // 3. Company Description & Detailed Executive Board
                _buildSectionHeader('Unternehmensprofil & Führungskräfte', Icons.business_outlined),
                const SizedBox(height: 12),
                _buildProfileSection(data),
              ],
            ),
          );
        }

        return _buildEmptyState();
      },
    );
  }

  Widget _buildPriceTargetCard(FundamentalDataModel data) {
    final rating = data.consensusRating ?? 'N/A';
    final targetMean = data.priceTargetMean;
    final targetLow = data.priceTargetLow;
    final targetHigh = data.priceTargetHigh;

    return GlassContainer(
      padding: const EdgeInsets.all(16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Row(
                children: [
                  Icon(Icons.trending_up, color: AppTheme.primaryEmerald, size: 22),
                  const SizedBox(width: 8),
                  const Text('Analysten-Konsens & Kursziele', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold, color: Colors.white)),
                ],
              ),
              StatusBadge(label: rating.toUpperCase(), color: AppTheme.primaryEmerald),
            ],
          ),
          const SizedBox(height: 12),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              _buildTargetStat('Mindestkursziel', _fmtCurrency(targetLow), AppTheme.accentRed),
              _buildTargetStat('Konsens-Ziel (Durchschnitt)', _fmtCurrency(targetMean), AppTheme.primaryEmerald),
              _buildTargetStat('Höchstkursziel', _fmtCurrency(targetHigh), AppTheme.accentCyan),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildTargetStat(String title, String val, Color col) {
    return Column(
      children: [
        Text(title, style: TextStyle(color: AppTheme.textMuted, fontSize: 11)),
        const SizedBox(height: 4),
        Text(val, style: TextStyle(color: col, fontWeight: FontWeight.bold, fontSize: 16)),
      ],
    );
  }

  Widget _buildFundamentalsShimmer(BuildContext context) {
    final isDesktop = MediaQuery.of(context).size.width >= 1050;
    final isTablet = MediaQuery.of(context).size.width >= 680 && MediaQuery.of(context).size.width < 1050;

    Widget panelShimmer() {
      return GlassContainer(
        padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 14),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const ShimmerLoading(width: 180, height: 18, borderRadius: 6),
            const SizedBox(height: 12),
            const Divider(color: Colors.white10, height: 1),
            const SizedBox(height: 8),
            for (int i = 0; i < 9; i++) ...[
              Padding(
                padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 4),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: const [
                    ShimmerLoading(width: 100, height: 14, borderRadius: 4),
                    ShimmerLoading(width: 60, height: 14, borderRadius: 4),
                  ],
                ),
              ),
            ],
          ],
        ),
      );
    }

    return SingleChildScrollView(
      physics: widget.isEmbedded ? const NeverScrollableScrollPhysics() : null,
      padding: const EdgeInsets.all(16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // Price Target Card Shimmer
          const ShimmerLoading(width: double.infinity, height: 86, borderRadius: 16),
          const SizedBox(height: 20),

          // 3 Category Panels Shimmer
          if (isDesktop)
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Expanded(child: panelShimmer()),
                const SizedBox(width: 14),
                Expanded(child: panelShimmer()),
                const SizedBox(width: 14),
                Expanded(child: panelShimmer()),
              ],
            )
          else if (isTablet)
            Column(
              children: [
                Row(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Expanded(child: panelShimmer()),
                    const SizedBox(width: 12),
                    Expanded(child: panelShimmer()),
                  ],
                ),
                const SizedBox(height: 12),
                panelShimmer(),
              ],
            )
          else
            Column(
              children: [
                panelShimmer(),
                const SizedBox(height: 12),
                panelShimmer(),
                const SizedBox(height: 12),
                panelShimmer(),
              ],
            ),

          const SizedBox(height: 20),
          // Profile Section Shimmer
          const ShimmerLoading(width: 220, height: 20, borderRadius: 6),
          const SizedBox(height: 12),
          const ShimmerLoading(width: double.infinity, height: 140, borderRadius: 16),
        ],
      ),
    );
  }

  Widget _buildProfileSection(FundamentalDataModel data) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        GlassContainer(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              if (data.sector != null || data.industry != null || data.country != null) ...[
                Row(
                  children: [
                    if (data.sector != null) ...[
                      _buildProfileBadge(data.sector!, Icons.category_outlined),
                      const SizedBox(width: 8),
                    ],
                    if (data.country != null)
                      _buildProfileBadge(data.country!, Icons.place_outlined),
                  ],
                ),
                const SizedBox(height: 12),
              ],
              Text(
                data.businessSummary != null && data.businessSummary!.isNotEmpty
                    ? data.businessSummary!
                    : 'Keine Beschreibung für dieses Asset verfügbar.',
                style: const TextStyle(color: Colors.white70, height: 1.5, fontSize: 13),
              ),
              if (data.employees != null) ...[
                const SizedBox(height: 12),
                Row(
                  children: [
                    Icon(Icons.people_outline, size: 16, color: AppTheme.textMuted),
                    const SizedBox(width: 6),
                    Text(
                      'Mitarbeiter: ${data.employees}',
                      style: TextStyle(color: AppTheme.textMuted, fontSize: 12),
                    ),
                  ],
                ),
              ],
            ],
          ),
        ),
        if (data.executives.isNotEmpty) ...[
          const SizedBox(height: 16),
          const Text('Führungskräfte (Board)', style: TextStyle(fontWeight: FontWeight.bold, color: Colors.white, fontSize: 14)),
          const SizedBox(height: 8),
          ...data.executives.take(5).map((e) => Padding(
                padding: const EdgeInsets.only(bottom: 8),
                child: GlassContainer(
                  padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
                  child: Row(
                    children: [
                      Container(
                        padding: const EdgeInsets.all(8),
                        decoration: BoxDecoration(
                          color: AppTheme.primaryEmerald.withValues(alpha: 0.1),
                          shape: BoxShape.circle,
                        ),
                        child: Icon(Icons.person_outline, color: AppTheme.primaryEmerald, size: 18),
                      ),
                      const SizedBox(width: 12),
                      Expanded(
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text(e.name, style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.white)),
                            Text(e.title, style: TextStyle(color: AppTheme.textMuted, fontSize: 11)),
                          ],
                        ),
                      ),
                      if (e.compensation != null && e.compensation! > 0)
                        Text(
                          _formatNumber(e.compensation),
                          style: TextStyle(color: AppTheme.accentCyan, fontWeight: FontWeight.bold, fontSize: 12),
                        ),
                    ],
                  ),
                ),
              )),
        ],
      ],
    );
  }

  Widget _buildProfileBadge(String label, IconData icon) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
      decoration: BoxDecoration(
        color: Colors.white.withValues(alpha: 0.05),
        borderRadius: BorderRadius.circular(8),
        border: Border.all(color: Colors.white10),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(icon, size: 12, color: AppTheme.primaryEmerald),
          const SizedBox(width: 6),
          Text(label, style: const TextStyle(color: Colors.white70, fontSize: 11)),
        ],
      ),
    );
  }

  Widget _buildEmptyState() {
    return Center(
      child: GlassContainer(
        padding: const EdgeInsets.all(24),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(Icons.insert_chart_outlined, color: AppTheme.textMuted, size: 48),
            const SizedBox(height: 12),
            const Text('Keine Fundamentaldaten verfügbar.', style: TextStyle(color: Colors.white70, fontWeight: FontWeight.bold)),
            const SizedBox(height: 6),
            Text('Für dieses Asset wurden noch keine Bilanz- oder Bewertungskennzahlen erfasst.', style: TextStyle(color: AppTheme.textMuted, fontSize: 12), textAlign: TextAlign.center),
            const SizedBox(height: 16),
            ElevatedButton.icon(
              onPressed: () => context.read<AssetFundamentalsBloc>().add(LoadAssetFundamentals(widget.isin, ticker: widget.symbol, forceRefresh: true)),
              icon: const Icon(Icons.download),
              label: const Text('Daten von Backend abrufen'),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildSectionHeader(String title, IconData icon) {
    return Row(
      children: [
        Icon(icon, color: AppTheme.primaryEmerald, size: 20),
        const SizedBox(width: 8),
        Text(title, style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold, color: Colors.white)),
      ],
    );
  }

  Widget _buildCategoryPanels(FundamentalDataModel data) {
    final valuationItems = [
      _MetricRowItem('KGV (Trailing P/E)', _fmtMultiple(data.peRatioTrailing)),
      _MetricRowItem('KGV (Forward P/E)', _fmtMultiple(data.peRatioForward)),
      _MetricRowItem('PEG Ratio', _fmtMultiple(data.pegRatio)),
      _MetricRowItem('KBV (P/B Ratio)', _fmtMultiple(data.pbRatio)),
      _MetricRowItem('KUV (P/S Ratio)', _fmtMultiple(data.psRatio)),
      _MetricRowItem('EV / EBITDA', _fmtMultiple(data.evToEbitda)),
      _MetricRowItem('EV / Sales', _fmtMultiple(data.evToRevenue)),
      _MetricRowItem('Enterprise Value', _formatNumber(data.enterpriseValue)),
      _MetricRowItem('Marktkapitalisierung', _formatNumber(data.marketCapitalization)),
      _MetricRowItem('Gewinn je Aktie (EPS)', _fmtCurrency(data.dilutedEps)),
      _MetricRowItem('52W Höchststand', _fmtCurrency(data.fiftyTwoWeekHigh)),
      _MetricRowItem('52W Tiefststand', _fmtCurrency(data.fiftyTwoWeekLow)),
    ];

    final profitabilityItems = [
      _MetricRowItem('Umsatzerlöse (Revenue)', _formatNumber(data.totalRevenue)),
      _MetricRowItem('Umsatzwachstum (YoY)', _fmtPercent(data.revenueGrowthYoY)),
      _MetricRowItem('Bruttogewinn', _formatNumber(data.grossProfit)),
      _MetricRowItem('Bruttomarge (Gross)', _fmtPercent(data.grossMargin)),
      _MetricRowItem('EBITDA', _formatNumber(data.ebitda)),
      _MetricRowItem('Operative Marge', _fmtPercent(data.operatingMargin)),
      _MetricRowItem('Nettogewinnmarge', _fmtPercent(data.netProfitMargin)),
      _MetricRowItem('Eigenkapitalrendite (ROE)', _fmtPercent(data.returnOnEquity)),
      _MetricRowItem('Gesamtkapitalrendite (ROA)', _fmtPercent(data.returnOnAssets)),
      _MetricRowItem('Verschuldungsgrad (D/E)', _fmtDebtToEquity(data.debtToEquity)),
      _MetricRowItem('Current Ratio', _fmtMultiple(data.currentRatio)),
      _MetricRowItem('Liquide Mittel (Cash)', _formatNumber(data.totalCash)),
      _MetricRowItem('Gesamtverschuldung (Debt)', _formatNumber(data.totalDebt)),
      _MetricRowItem('Operativer Cashflow', _formatNumber(data.operatingCashFlow)),
      _MetricRowItem('Free Cashflow', _formatNumber(data.freeCashFlow)),
    ];

    final dividendItems = [
      _MetricRowItem('Dividendenrendite', _fmtPercent(data.dividendYield)),
      _MetricRowItem('Ausschüttungsquote (Payout)', _fmtPercent(data.payoutRatio)),
      _MetricRowItem('Ex-Dividendentag', _fmtDate(data.exDividendDate)),
      _MetricRowItem('Nächste Quartalszahlen', _fmtDate(data.nextEarningsDate)),
      _MetricRowItem('Konsens-Rating', data.consensusRating != null ? data.consensusRating!.toUpperCase() : 'N/A'),
      _MetricRowItem('Institutioneller Anteil', _fmtPercent(data.percentHeldByInstitutions)),
      _MetricRowItem('Insider Anteil', _fmtPercent(data.percentHeldByInsiders)),
      _MetricRowItem('Short % of Float', _fmtPercent(data.shortPercentOfFloat)),
    ];

    final panel1 = _buildCategoryPanel(
      title: 'Bewertungskennzahlen & Multiples',
      icon: Icons.analytics_outlined,
      items: valuationItems,
    );

    final panel2 = _buildCategoryPanel(
      title: 'Rentabilität & Finanzen',
      icon: Icons.account_balance_outlined,
      items: profitabilityItems,
    );

    final panel3 = _buildCategoryPanel(
      title: 'Dividenden & Termine',
      icon: Icons.pie_chart_outline,
      items: dividendItems,
    );

    return LayoutBuilder(
      builder: (context, constraints) {
        if (constraints.maxWidth >= 1050) {
          return Row(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Expanded(child: panel1),
              const SizedBox(width: 14),
              Expanded(child: panel2),
              const SizedBox(width: 14),
              Expanded(child: panel3),
            ],
          );
        } else if (constraints.maxWidth >= 680) {
          return Column(
            children: [
              Row(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Expanded(child: panel1),
                  const SizedBox(width: 12),
                  Expanded(child: panel2),
                ],
              ),
              const SizedBox(height: 12),
              panel3,
            ],
          );
        } else {
          return Column(
            children: [
              panel1,
              const SizedBox(height: 12),
              panel2,
              const SizedBox(height: 12),
              panel3,
            ],
          );
        }
      },
    );
  }

  Widget _buildCategoryPanel({
    required String title,
    required IconData icon,
    required List<_MetricRowItem> items,
  }) {
    return GlassContainer(
      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              Container(
                padding: const EdgeInsets.all(6),
                decoration: BoxDecoration(
                  color: AppTheme.primaryEmerald.withValues(alpha: 0.12),
                  borderRadius: BorderRadius.circular(6),
                ),
                child: Icon(icon, color: AppTheme.primaryEmerald, size: 16),
              ),
              const SizedBox(width: 8),
              Expanded(
                child: Text(
                  title,
                  style: const TextStyle(
                    fontSize: 13,
                    fontWeight: FontWeight.bold,
                    color: Colors.white,
                  ),
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                ),
              ),
            ],
          ),
          const SizedBox(height: 8),
          const Divider(color: Colors.white10, height: 1),
          const SizedBox(height: 4),
          ...items.asMap().entries.map((entry) {
            final idx = entry.key;
            final item = entry.value;
            final isEven = idx % 2 == 0;
            return _buildMetricListRow(item.label, item.value, isEven: isEven, valueColor: item.valueColor);
          }),
        ],
      ),
    );
  }

  Widget _buildMetricListRow(String label, String value, {bool isEven = false, Color? valueColor}) {
    return InkWell(
      onTap: () => MetricExplanations.show(context, label),
      borderRadius: BorderRadius.circular(6),
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
        decoration: BoxDecoration(
          color: isEven ? Colors.white.withValues(alpha: 0.02) : Colors.transparent,
          borderRadius: BorderRadius.circular(6),
        ),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                Text(
                  label,
                  style: TextStyle(color: AppTheme.textMuted, fontSize: 12),
                ),
                const SizedBox(width: 4),
                Icon(Icons.info_outline, size: 11, color: AppTheme.textMuted.withValues(alpha: 0.6)),
              ],
            ),
            const SizedBox(width: 8),
            Flexible(
              child: Text(
                value,
                style: TextStyle(
                  color: valueColor ?? (value == 'N/A' ? AppTheme.textMuted : Colors.white),
                  fontWeight: FontWeight.w600,
                  fontSize: 12,
                ),
                textAlign: TextAlign.right,
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
              ),
            ),
          ],
        ),
      ),
    );
  }

  String _fmtMultiple(dynamic val) {
    if (val == null) return 'N/A';
    final n = (val is num) ? val.toDouble() : double.tryParse(val.toString());
    return n != null ? '${n.toStringAsFixed(2)}x' : 'N/A';
  }

  String _fmtDays(dynamic val) {
    if (val == null) return 'N/A';
    final n = (val is num) ? val.toDouble() : double.tryParse(val.toString());
    return n != null ? '${n.toStringAsFixed(1)} Tage' : 'N/A';
  }

  String _fmtDebtToEquity(dynamic val) {
    if (val == null) return 'N/A';
    final n = (val is num) ? val.toDouble() : double.tryParse(val.toString());
    if (n == null) return 'N/A';
    // Yahoo liefert D/E als Prozentwert (z. B. 145.23 = 145.23% oder Faktor 1.45x)
    if (n > 5) {
      return '${(n / 100).toStringAsFixed(2)}x (${n.toStringAsFixed(1)} %)';
    }
    return '${n.toStringAsFixed(2)}x (${(n * 100).toStringAsFixed(1)} %)';
  }

  String _fmtPercent(dynamic val) {
    if (val == null) return 'N/A';
    final n = (val is num) ? val.toDouble() : double.tryParse(val.toString());
    if (n == null) return 'N/A';
    // Yahoo liefert Margen/Renditen als Dezimalzahl (z. B. 0.25 = 25%, 1.2 = 120%)
    // Wenn |n| <= 2.5 ist, handelt es sich um eine Dezimalquote -> mit 100 multiplizieren
    final p = n.abs() <= 2.5 ? n * 100 : n;
    return '${p.toStringAsFixed(2)} %';
  }

  String _fmtCurrency(dynamic val) {
    if (val == null) return 'N/A';
    final n = (val is num) ? val.toDouble() : double.tryParse(val.toString());
    if (n == null || n == 0) return 'N/A';
    return '$_sym${n.toStringAsFixed(2)}';
  }

  String _fmtDate(dynamic val) {
    if (val == null) return 'N/A';
    final dt = DateTime.tryParse(val.toString());
    return dt != null ? '${dt.day.toString().padLeft(2, '0')}.${dt.month.toString().padLeft(2, '0')}.${dt.year}' : val.toString();
  }

  String _formatNumber(dynamic val) {
    if (val == null) return 'N/A';
    final num? n = val is num ? val : num.tryParse(val.toString());
    if (n == null) return val.toString();

    final isNegative = n < 0;
    final absVal = n.abs();
    final prefix = isNegative ? '-$_sym' : _sym;

    if (absVal >= 1e12) {
      return '$prefix${(absVal / 1e12).toStringAsFixed(2)} Bio.';
    } else if (absVal >= 1e9) {
      return '$prefix${(absVal / 1e9).toStringAsFixed(2)} Mrd.';
    } else if (absVal >= 1e6) {
      return '$prefix${(absVal / 1e6).toStringAsFixed(2)} Mio.';
    } else if (absVal >= 1e3) {
      return '$prefix${(absVal / 1e3).toStringAsFixed(1)} Tsd.';
    } else {
      return '$prefix${absVal.toStringAsFixed(2)}';
    }
  }

  /// Leitet das Währungssymbol vom Ticker-Suffix ab.
  String _getCurrencySymbol(String? ticker) {
    if (ticker == null || ticker.isEmpty) return '\$';
    final t = ticker.toUpperCase();
    if (t.endsWith('.DE') || t.endsWith('.F') || t.endsWith('.STU') ||
        t.endsWith('.MU') || t.endsWith('.HM') || t.endsWith('.DU') ||
        t.endsWith('.BE') || t.endsWith('.SG') ||
        t.endsWith('.PA') || t.endsWith('.AS') || t.endsWith('.MI') ||
        t.endsWith('.MC')) return '€';
    if (t.endsWith('.L')) return '£';
    if (t.endsWith('.SW')) return 'CHF ';
    if (t.endsWith('.TO')) return 'CA\$';
    if (t.endsWith('.AX')) return 'A\$';
    if (t.endsWith('.T')) return '¥';
    if (t.endsWith('.HK')) return 'HK\$';
    return '\$';
  }

  /// Leitet den Währungscode vom Ticker-Suffix ab.
  String _getCurrencyCode(String? ticker) {
    if (ticker == null || ticker.isEmpty) return 'USD';
    final t = ticker.toUpperCase();
    if (t.endsWith('.DE') || t.endsWith('.F') || t.endsWith('.STU') ||
        t.endsWith('.MU') || t.endsWith('.HM') || t.endsWith('.DU') ||
        t.endsWith('.BE') || t.endsWith('.SG') ||
        t.endsWith('.PA') || t.endsWith('.AS') || t.endsWith('.MI') ||
        t.endsWith('.MC')) return 'EUR';
    if (t.endsWith('.L')) return 'GBP';
    if (t.endsWith('.SW')) return 'CHF';
    if (t.endsWith('.TO')) return 'CAD';
    if (t.endsWith('.AX')) return 'AUD';
    if (t.endsWith('.T')) return 'JPY';
    if (t.endsWith('.HK')) return 'HKD';
    return 'USD';
  }
}

class _MetricRowItem {
  final String label;
  final String value;
  final Color? valueColor;

  const _MetricRowItem(this.label, this.value, {this.valueColor});
}