import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../models/fundamental_data_model.dart';
import '../../../../core/theme/app_theme.dart';
import '../../../../core/widgets/glass_container.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 '../../utils/metric_explanations.dart';

class FundamentalsTab extends StatefulWidget {
  final String isin;
  final String? symbol;
  const FundamentalsTab({super.key, this.symbol, required this.isin});

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

class _FundamentalsTabState extends State<FundamentalsTab> {
  String _selectedPeriodType = 'Annual'; // 'Annual' or 'Quarterly'
  String _selectedStatementType = 'Income'; // 'Income', 'Balance', 'CashFlow'

  @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 Center(child: CircularProgressIndicator(color: AppTheme.primaryEmerald));
        }

        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) {
            return _buildEmptyState();
          }

          return SingleChildScrollView(
            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. Valuation Multiples & Ratios
                _buildSectionHeader('Bewertungskennzahlen & Multiples', Icons.analytics_outlined),
                const SizedBox(height: 12),
                GridView.count(
                  crossAxisCount: MediaQuery.of(context).size.width > 700 ? 4 : 2,
                  crossAxisSpacing: 10,
                  mainAxisSpacing: 10,
                  childAspectRatio: MediaQuery.of(context).size.width > 700 ? 2.2 : 1.8,
                  shrinkWrap: true,
                  physics: const NeverScrollableScrollPhysics(),
                  children: [
                    _buildMetricCard('KGV (Trailing P/E)', _fmtMultiple(data.peRatioTrailing)),
                    _buildMetricCard('KGV (Forward P/E)', _fmtMultiple(data.peRatioForward)),
                    _buildMetricCard('PEG Ratio', _fmtMultiple(data.pegRatio)),
                    _buildMetricCard('KBV (P/B Ratio)', _fmtMultiple(data.pbRatio)),
                    _buildMetricCard('KUV (P/S Ratio)', _fmtMultiple(data.psRatio)),
                    _buildMetricCard('EV / EBITDA', _fmtMultiple(data.evToEbitda)),
                    _buildMetricCard('EV / Sales', _fmtMultiple(data.evToRevenue)),
                    _buildMetricCard('Enterprise Value', _formatNumber(data.enterpriseValue)),
                    _buildMetricCard('Marktkapitalisierung', _formatNumber(data.marketCapitalization)),
                    _buildMetricCard('52W Höchststand', _fmtCurrency(data.fiftyTwoWeekHigh)),
                    _buildMetricCard('52W Tiefststand', _fmtCurrency(data.fiftyTwoWeekLow)),
                    _buildMetricCard('Short Ratio', _fmtMultiple(data.shortRatio)),
                  ],
                ),
                const SizedBox(height: 24),

                // 3. Profitability & Financial Health Margins
                _buildSectionHeader('Rentabilität & Finanzielle Gesundheit', Icons.account_balance_outlined),
                const SizedBox(height: 12),
                GridView.count(
                  crossAxisCount: MediaQuery.of(context).size.width > 700 ? 4 : 2,
                  crossAxisSpacing: 10,
                  mainAxisSpacing: 10,
                  childAspectRatio: MediaQuery.of(context).size.width > 700 ? 2.2 : 1.8,
                  shrinkWrap: true,
                  physics: const NeverScrollableScrollPhysics(),
                  children: [
                    _buildMetricCard('Bruttomarge (Gross)', _fmtPercent(data.grossMargin)),
                    _buildMetricCard('Operative Marge', _fmtPercent(data.operatingMargin)),
                    _buildMetricCard('Nettogewinnmarge', _fmtPercent(data.netProfitMargin)),
                    _buildMetricCard('Eigenkapitalrendite (ROE)', _fmtPercent(data.returnOnEquity)),
                    _buildMetricCard('Gesamtkapitalrendite (ROA)', _fmtPercent(data.returnOnAssets)),
                    _buildMetricCard('ROIC (Invested Capital)', _fmtPercent(data.returnOnInvestedCapital)),
                    _buildMetricCard('Verschuldungsgrad (D/E)', _fmtMultiple(data.debtToEquity)),
                    _buildMetricCard('Current Ratio', _fmtMultiple(data.currentRatio)),
                    _buildMetricCard('Quick Ratio', _fmtMultiple(data.quickRatio)),
                    _buildMetricCard('Zinsdeckungsgrad', _fmtMultiple(data.interestCoverage)),
                  ],
                ),
                const SizedBox(height: 24),

                // 4. Dividends & Ownership
                _buildSectionHeader('Dividenden & Aktionärsstruktur', Icons.pie_chart_outline),
                const SizedBox(height: 12),
                GridView.count(
                  crossAxisCount: MediaQuery.of(context).size.width > 700 ? 4 : 2,
                  crossAxisSpacing: 10,
                  mainAxisSpacing: 10,
                  childAspectRatio: MediaQuery.of(context).size.width > 700 ? 2.2 : 1.8,
                  shrinkWrap: true,
                  physics: const NeverScrollableScrollPhysics(),
                  children: [
                    _buildMetricCard('Dividendenrendite', _fmtPercent(data.dividendYield)),
                    _buildMetricCard('Ausschüttungsquote (Payout)', _fmtPercent(data.payoutRatio)),
                    _buildMetricCard('Ex-Dividendentag', _fmtDate(data.exDividendDate)),
                    _buildMetricCard('Nächste Quartalszahlen', _fmtDate(data.nextEarningsDate)),
                    _buildMetricCard('Institutioneller Anteil', _fmtPercent(data.percentHeldByInstitutions)),
                    _buildMetricCard('Insider Anteil', _fmtPercent(data.percentHeldByInsiders)),
                    _buildMetricCard('Short % of Float', _fmtPercent(data.shortPercentOfFloat)),
                  ],
                ),
                const SizedBox(height: 24),

                // 5. Financial Statements Section
                _buildSectionHeader('Finanzberichte (Statements)', Icons.article_outlined),
                const SizedBox(height: 12),
                _buildStatementsSection(data),
                const SizedBox(height: 24),

                // 6. 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 _buildStatementsSection(FundamentalDataModel data) {
    // Filter statements by Jährlich / Quartal
    final filteredStatements = data.financialStatements
        .where((s) => s.periodType.toLowerCase() == _selectedPeriodType.toLowerCase())
        .toList();

    // Sort descending by date
    filteredStatements.sort((a, b) => b.endDate.compareTo(a.endDate));

    return GlassContainer(
      padding: const EdgeInsets.all(16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // Row containing switches
          Row(
            children: [
              // Period Toggle (Annual / Quarterly)
              DropdownButton<String>(
                value: _selectedPeriodType,
                dropdownColor: AppTheme.cardSurface,
                style: const TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
                underline: const SizedBox.shrink(),
                icon: const Icon(Icons.arrow_drop_down, color: Colors.white),
                items: const [
                  DropdownMenuItem(value: 'Annual', child: Text('Jährlich (Annual)')),
                  DropdownMenuItem(value: 'Quarterly', child: Text('Quartal (Quarterly)')),
                ],
                onChanged: (val) {
                  if (val != null) {
                    setState(() => _selectedPeriodType = val);
                  }
                },
              ),
              const Spacer(),
              // Statement Type Selector
              Row(
                children: [
                  _buildStatementTabButton('GuV', 'Income'),
                  const SizedBox(width: 6),
                  _buildStatementTabButton('Bilanz', 'Balance'),
                  const SizedBox(width: 6),
                  _buildStatementTabButton('Cashflow', 'CashFlow'),
                ],
              ),
            ],
          ),
          const SizedBox(height: 16),
          const Divider(color: Colors.white10),
          const SizedBox(height: 8),

          if (filteredStatements.isEmpty)
            Padding(
              padding: const EdgeInsets.symmetric(vertical: 24),
              child: Center(
                child: Text(
                  'Keine Berichte für diesen Typ vorhanden.',
                  style: TextStyle(color: AppTheme.textMuted, fontStyle: FontStyle.italic),
                ),
              ),
            )
          else
            SingleChildScrollView(
              scrollDirection: Axis.horizontal,
              physics: const BouncingScrollPhysics(),
              child: Table(
                defaultColumnWidth: const FixedColumnWidth(110),
                columnWidths: const {
                  0: FixedColumnWidth(180), // First column containing label is wider
                },
                border: TableBorder(
                  horizontalInside: BorderSide(color: Colors.white, width: 0.5),
                ),
                children: _buildTableRows(filteredStatements),
              ),
            ),
        ],
      ),
    );
  }

  Widget _buildStatementTabButton(String label, String typeCode) {
    final isSelected = _selectedStatementType == typeCode;
    return InkWell(
      onTap: () => setState(() => _selectedStatementType = typeCode),
      borderRadius: BorderRadius.circular(8),
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
        decoration: BoxDecoration(
          color: isSelected ? AppTheme.primaryEmerald.withValues(alpha: 0.15) : Colors.transparent,
          borderRadius: BorderRadius.circular(8),
          border: Border.all(
            color: isSelected ? AppTheme.primaryEmerald.withValues(alpha: 0.4) : Colors.white10,
          ),
        ),
        child: Text(
          label,
          style: TextStyle(
            color: isSelected ? AppTheme.primaryEmerald : Colors.white70,
            fontSize: 12,
            fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
          ),
        ),
      ),
    );
  }

  List<TableRow> _buildTableRows(List<FinancialStatementModel> statements) {
    final List<TableRow> rows = [];

    // Header row containing Dates
    rows.add(
      TableRow(
        children: [
          _buildTableCell('Kennzahl (in EUR)', isHeader: true),
          ...statements.map((s) => _buildTableCell(_fmtDate(s.endDate), isHeader: true)),
        ],
      ),
    );

    if (_selectedStatementType == 'Income') {
      rows.add(_buildDataRow('Umsatzerlöse', statements.map((s) => s.totalRevenue).toList()));
      rows.add(_buildDataRow('Umsatzkosten', statements.map((s) => s.costOfRevenue).toList()));
      rows.add(_buildDataRow('Bruttogewinn', statements.map((s) => s.grossProfit).toList()));
      rows.add(_buildDataRow('Operative Aufwendungen', statements.map((s) => s.operatingExpenses).toList()));
      rows.add(_buildDataRow('Operatives Ergebnis (EBIT)', statements.map((s) => s.operatingIncome).toList()));
      rows.add(_buildDataRow('EBITDA', statements.map((s) => s.ebitda).toList()));
      rows.add(_buildDataRow('Jahresüberschuss', statements.map((s) => s.netIncome).toList()));
      rows.add(_buildDataRow('EPS (Basic)', statements.map((s) => s.epsBasic).toList(), isCurrency: true));
      rows.add(_buildDataRow('EPS (Diluted)', statements.map((s) => s.epsDiluted).toList(), isCurrency: true));
    } else if (_selectedStatementType == 'Balance') {
      rows.add(_buildDataRow('Liquide Mittel', statements.map((s) => s.cashAndCashEquivalents).toList()));
      rows.add(_buildDataRow('Forderungen', statements.map((s) => s.accountsReceivable).toList()));
      rows.add(_buildDataRow('Vorräte', statements.map((s) => s.inventory).toList()));
      rows.add(_buildDataRow('Umlaufvermögen (Current Assets)', statements.map((s) => s.totalCurrentAssets).toList()));
      rows.add(_buildDataRow('Anlagevermögen (Non-Current)', statements.map((s) => s.totalNonCurrentAssets).toList()));
      rows.add(_buildDataRow('Kurzfr. Verbindlichkeiten', statements.map((s) => s.currentLiabilities).toList()));
      rows.add(_buildDataRow('Langfristige Schulden', statements.map((s) => s.longTermDebt).toList()));
      rows.add(_buildDataRow('Gesamtverbindlichkeiten', statements.map((s) => s.totalLiabilities).toList()));
      rows.add(_buildDataRow('Eigenkapital (Equity)', statements.map((s) => s.totalStockholdersEquity).toList()));
    } else {
      rows.add(_buildDataRow('Operativer Cashflow', statements.map((s) => s.operatingCashFlow).toList()));
      rows.add(_buildDataRow('Investiver Cashflow', statements.map((s) => s.investingCashFlow).toList()));
      rows.add(_buildDataRow('Investitionsausgaben (CapEx)', statements.map((s) => s.capitalExpenditures).toList()));
      rows.add(_buildDataRow('Finanzierungs-Cashflow', statements.map((s) => s.financingCashFlow).toList()));
      rows.add(_buildDataRow('Free Cashflow', statements.map((s) => s.freeCashFlow).toList()));
    }

    return rows;
  }

  TableRow _buildDataRow(String label, List<dynamic> values, {bool isCurrency = false}) {
    return TableRow(
      children: [
        _buildTableCell(label),
        ...values.map((v) => _buildTableCell(isCurrency ? _fmtCurrency(v) : _formatNumber(v))),
      ],
    );
  }

  Widget _buildTableCell(String val, {bool isHeader = false}) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 8),
      child: Text(
        val,
        style: TextStyle(
          color: isHeader ? AppTheme.accentCyan : Colors.white70,
          fontWeight: isHeader ? FontWeight.bold : FontWeight.normal,
          fontSize: 12,
        ),
      ),
    );
  }

  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 _buildMetricCard(String label, String value) {
    return InkWell(
      onTap: () => MetricExplanations.show(context, label),
      borderRadius: BorderRadius.circular(10),
      child: GlassContainer(
        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Expanded(
                  child: Text(
                    label,
                    style: TextStyle(color: AppTheme.textMuted, fontSize: 11),
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                  ),
                ),
                const SizedBox(width: 4),
                Icon(Icons.info_outline, size: 12, color: AppTheme.textMuted),
              ],
            ),
            const SizedBox(height: 4),
            Expanded(
              child: Align(
                alignment: Alignment.centerLeft,
                child: FittedBox(
                  fit: BoxFit.scaleDown,
                  alignment: Alignment.centerLeft,
                  child: Text(
                    value,
                    style: const TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 14),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  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 _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';
    final p = (n > 0 && n <= 1) ? 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());
    return n != null ? '€${n.toStringAsFixed(2)}' : 'N/A';
  }

  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 ? '-€' : '€';

    if (absVal >= 1e12) {
      return '$prefix${(absVal / 1e12).toStringAsFixed(2)} Bil.';
    } 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(2)} Tsd.';
    } else {
      return '$prefix${absVal.toStringAsFixed(2)}';
    }
  }
}