import 'package:flutter/material.dart';
import '../../../../core/theme/app_theme.dart';
import '../models/trade_model.dart';
import 'trade_calculation_card.dart';

class TradeDetailContent extends StatelessWidget {
  final TradeModel trade;

  const TradeDetailContent({super.key, required this.trade});

  @override
  Widget build(BuildContext context) {
    final pnlAbs = trade.calculatedPnlAbs;
    final pnlPct = trade.calculatedPnlPct;
    final isPnlPos = pnlAbs >= 0;
    final pnlColor = isPnlPos ? AppTheme.primaryEmerald : AppTheme.accentRed;
    final currPrice = trade.effectiveCurrentPrice;

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        // Drift Radar Status
        if (trade.isActive) ...[
          _buildDriftRadarCard(trade),
          const SizedBox(height: 14),
        ],

        // Exit Alert if pending
        if (trade.isActive && trade.hasPendingExitAlert) ...[
          Container(
            padding: const EdgeInsets.all(14),
            decoration: BoxDecoration(
              color: AppTheme.accentRed.withValues(alpha: 0.15),
              borderRadius: BorderRadius.circular(12),
              border: Border.all(color: AppTheme.accentRed.withValues(alpha: 0.5)),
            ),
            child: Row(
              children: [
                Icon(Icons.warning_amber_rounded, color: AppTheme.accentRed, size: 24),
                const SizedBox(width: 12),
                Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text('Ausstiegs-Empfehlung der KI!', style: TextStyle(color: AppTheme.accentRed, fontWeight: FontWeight.bold, fontSize: 13)),
                      const SizedBox(height: 2),
                      Text(
                        trade.pendingExitReason.isNotEmpty ? trade.pendingExitReason : 'Die Indikatoren raten zum Verlassen der Position zur Gewinnsicherung / Risikominimierung.',
                        style: const TextStyle(color: Colors.white70, fontSize: 12),
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(height: 14),
        ],

        // Metrics Grid
        Container(
          padding: const EdgeInsets.all(16),
          decoration: BoxDecoration(
            color: Colors.black.withValues(alpha: 0.3),
            borderRadius: BorderRadius.circular(14),
            border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              _metricItem(
                trade.isActive || trade.isClosed ? 'Ausführung' : 'Ziel-Einstieg',
                trade.actualEntryPrice > 0
                    ? '€${trade.actualEntryPrice.toStringAsFixed(2)}'
                    : (trade.entryPrice > 0 ? '€${trade.entryPrice.toStringAsFixed(2)}' : '-'),
                Colors.white,
              ),
              _metricItem('Live-Kurs', '€${currPrice.toStringAsFixed(2)}', AppTheme.accentCyan),
              _metricItem(
                trade.driftStatus == DriftStatus.trailingActive ? 'Stop (Trailing)' : 'Stop-Loss',
                '€${trade.stopLoss.toStringAsFixed(2)}',
                AppTheme.accentRed,
              ),
              _metricItem(
                trade.takeProfitTargets.length > 1 ? 'TP (Aktuell)' : 'Take-Profit',
                '€${trade.takeProfit.toStringAsFixed(2)}',
                AppTheme.primaryEmerald,
              ),
            ],
          ),
        ),
        if (trade.takeProfitTargets.length > 1) ...[
          const SizedBox(height: 10),
          Row(
            children: [
              Text(
                'Alle Gewinn-Ziele: ',
                style: TextStyle(color: AppTheme.textMuted, fontSize: 12, fontWeight: FontWeight.bold),
              ),
              Expanded(
                child: Wrap(
                  spacing: 6,
                  runSpacing: 4,
                  children: trade.takeProfitTargets.asMap().entries.map((entry) {
                    final idx = entry.key;
                    final tpVal = entry.value;
                    final isCurrent = (trade.takeProfit - tpVal).abs() < 0.01;

                    return Container(
                      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
                      decoration: BoxDecoration(
                        color: isCurrent
                            ? AppTheme.primaryEmerald.withValues(alpha: 0.2)
                            : Colors.white.withValues(alpha: 0.05),
                        borderRadius: BorderRadius.circular(6),
                        border: Border.all(
                          color: isCurrent
                              ? AppTheme.primaryEmerald
                              : Colors.white.withValues(alpha: 0.15),
                        ),
                      ),
                      child: Text(
                        'TP${idx + 1}: €${tpVal.toStringAsFixed(2)}',
                        style: TextStyle(
                          color: isCurrent ? AppTheme.primaryEmerald : Colors.white70,
                          fontSize: 11,
                          fontWeight: isCurrent ? FontWeight.w900 : FontWeight.bold,
                        ),
                      ),
                    );
                  }).toList(),
                ),
              ),
            ],
          ),
        ],
        if (trade.isActive || trade.isClosed) ...[
          const SizedBox(height: 14),
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
            decoration: BoxDecoration(
              color: pnlColor.withValues(alpha: 0.12),
              borderRadius: BorderRadius.circular(12),
              border: Border.all(color: pnlColor.withValues(alpha: 0.3)),
            ),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                const Text('Aktueller PnL:', style: TextStyle(color: Colors.white70, fontSize: 13)),
                Text(
                  '${isPnlPos ? '+' : ''}€${pnlAbs.abs().toStringAsFixed(2)} (${isPnlPos ? '+' : ''}${pnlPct.toStringAsFixed(2)}%)',
                  style: TextStyle(color: pnlColor, fontWeight: FontWeight.bold, fontSize: 15),
                ),
              ],
            ),
          ),
        ],
        const SizedBox(height: 20),

        // 3. LIVE-KALKULATION (AUTOMATISCH) & MEHRSTUFIGE TP-ZIELE
        TradeCalculationCard(trade: trade),
        const SizedBox(height: 18),

        // Trade Parameters & Instrument
        _sectionTitle(Icons.tune, 'Trade-Parameter & Instrument', Colors.white70),
        const SizedBox(height: 8),
        Container(
          padding: const EdgeInsets.all(14),
          decoration: BoxDecoration(
            color: Colors.white.withValues(alpha: 0.02),
            borderRadius: BorderRadius.circular(12),
            border: Border.all(color: Colors.white.withValues(alpha: 0.06)),
          ),
          child: Column(
            children: [
              _paramRow('Instrument Typ:', trade.instrumentType.isNotEmpty ? trade.instrumentType : 'Stock'),
              if (trade.derivativeIsin.isNotEmpty) _paramRow('Derivat / Hebel ISIN:', trade.derivativeIsin),
              _paramRow('Zeithorizont:', trade.timeframe.isNotEmpty ? trade.timeframe : '1D'),
              if (trade.leverageUsed > 1) _paramRow('Hebel:', '${trade.leverageUsed.toStringAsFixed(1)}x'),
              if (trade.positionSize > 0) _paramRow('Positionsgröße:', '€${trade.positionSize.toStringAsFixed(2)}'),
            ],
          ),
        ),
        const SizedBox(height: 18),

        // AUFKLAPPBARE KARTE: KI-Analysen, Bewertungen & Begründungen
        Container(
          decoration: BoxDecoration(
            color: Colors.white.withValues(alpha: 0.03),
            borderRadius: BorderRadius.circular(12),
            border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
          ),
          child: Theme(
            data: ThemeData(dividerColor: Colors.transparent),
            child: ExpansionTile(
              initiallyExpanded: false,
              tilePadding: const EdgeInsets.symmetric(horizontal: 14, vertical: 4),
              childrenPadding: const EdgeInsets.fromLTRB(14, 0, 14, 14),
              iconColor: AppTheme.accentCyan,
              collapsedIconColor: Colors.white70,
              leading: Icon(Icons.auto_awesome, color: AppTheme.primaryEmerald, size: 20),
              title: const Text(
                'KI-Analysen, Bewertungen & Begründungen',
                style: TextStyle(color: Colors.white, fontSize: 13, fontWeight: FontWeight.bold),
              ),
              subtitle: Text(
                'Technische & fundamentale Begründung, Risikowarnung & Guardian-Protokoll',
                style: TextStyle(color: AppTheme.textMuted, fontSize: 11),
              ),
              children: [
                const Divider(color: Colors.white10, height: 16),

                // Hourly Updates Timeline
                if (trade.hourlyUpdates.isNotEmpty) ...[
                  _sectionTitle(Icons.history_toggle_off, 'KI-Guardian Überwachungsprotokoll (${trade.hourlyUpdates.length} Checks)', AppTheme.accentCyan),
                  const SizedBox(height: 8),
                  Container(
                    padding: const EdgeInsets.all(12),
                    decoration: BoxDecoration(
                      color: Colors.black.withValues(alpha: 0.2),
                      borderRadius: BorderRadius.circular(10),
                      border: Border.all(color: Colors.white.withValues(alpha: 0.06)),
                    ),
                    child: Column(
                      children: trade.hourlyUpdates.reversed.map((u) {
                        return Padding(
                          padding: const EdgeInsets.only(bottom: 8),
                          child: Row(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Text(
                                '${u.timestamp.day.toString().padLeft(2, '0')}.${u.timestamp.month.toString().padLeft(2, '0')} ${u.timestamp.hour.toString().padLeft(2, '0')}:${u.timestamp.minute.toString().padLeft(2, '0')}',
                                style: TextStyle(color: AppTheme.textMuted, fontSize: 11, fontWeight: FontWeight.bold),
                              ),
                              const SizedBox(width: 10),
                              Container(
                                padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
                                decoration: BoxDecoration(
                                  color: (u.recommendation.toLowerCase().contains('close')
                                          ? AppTheme.accentRed
                                          : (u.recommendation.toLowerCase().contains('adjust') ? Colors.blue : AppTheme.primaryEmerald))
                                      .withValues(alpha: 0.2),
                                  borderRadius: BorderRadius.circular(4),
                                ),
                                child: Text(u.recommendation, style: const TextStyle(color: Colors.white, fontSize: 10, fontWeight: FontWeight.bold)),
                              ),
                              const SizedBox(width: 10),
                              Expanded(
                                child: Column(
                                  crossAxisAlignment: CrossAxisAlignment.start,
                                  children: [
                                    Text(
                                      u.reasoning.isNotEmpty ? u.reasoning : 'Stündliche Überprüfung durchgeführt.',
                                      style: const TextStyle(color: Colors.white70, fontSize: 12),
                                    ),
                                    Text(
                                      'Kurs: €${u.currentPrice.toStringAsFixed(2)}${u.suggestedStopLoss != null ? " • Neuer SL: €${u.suggestedStopLoss!.toStringAsFixed(2)}" : ""} • VIX: ${u.vixValue.toStringAsFixed(1)}',
                                      style: TextStyle(color: AppTheme.textMuted, fontSize: 11),
                                    ),
                                  ],
                                ),
                              ),
                            ],
                          ),
                        );
                      }).toList(),
                    ),
                  ),
                  const SizedBox(height: 14),
                ],

                if (trade.reasoning.isNotEmpty) ...[
                  _sectionTitle(Icons.auto_awesome, 'KI-Gesamteinschätzung & Begründung', AppTheme.primaryEmerald),
                  const SizedBox(height: 8),
                  Container(
                    width: double.infinity,
                    padding: const EdgeInsets.all(12),
                    decoration: BoxDecoration(
                      color: AppTheme.primaryEmerald.withValues(alpha: 0.08),
                      borderRadius: BorderRadius.circular(10),
                      border: Border.all(color: AppTheme.primaryEmerald.withValues(alpha: 0.2)),
                    ),
                    child: Text(trade.reasoning, style: const TextStyle(color: Colors.white, fontSize: 13, height: 1.4)),
                  ),
                  const SizedBox(height: 14),
                ],

                if (trade.technicalRationale.isNotEmpty) ...[
                  _sectionTitle(Icons.show_chart, 'Technische Analyse & Indikatoren', AppTheme.accentCyan),
                  const SizedBox(height: 8),
                  Container(
                    width: double.infinity,
                    padding: const EdgeInsets.all(12),
                    decoration: BoxDecoration(
                      color: Colors.white.withValues(alpha: 0.03),
                      borderRadius: BorderRadius.circular(10),
                      border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
                    ),
                    child: Text(trade.technicalRationale, style: TextStyle(color: AppTheme.textMuted, fontSize: 12.5, height: 1.4)),
                  ),
                  const SizedBox(height: 14),
                ],

                if (trade.fundamentalRationale.isNotEmpty) ...[
                  _sectionTitle(Icons.account_balance, 'Fundamentale Bewertung', Colors.purpleAccent),
                  const SizedBox(height: 8),
                  Container(
                    width: double.infinity,
                    padding: const EdgeInsets.all(12),
                    decoration: BoxDecoration(
                      color: Colors.white.withValues(alpha: 0.03),
                      borderRadius: BorderRadius.circular(10),
                      border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
                    ),
                    child: Text(trade.fundamentalRationale, style: TextStyle(color: AppTheme.textMuted, fontSize: 12.5, height: 1.4)),
                  ),
                  const SizedBox(height: 14),
                ],

                if (trade.riskWarning.isNotEmpty) ...[
                  _sectionTitle(Icons.warning_amber_rounded, 'Risikohinweis & Marktumfeld', AppTheme.accentRed),
                  const SizedBox(height: 8),
                  Container(
                    width: double.infinity,
                    padding: const EdgeInsets.all(12),
                    decoration: BoxDecoration(
                      color: AppTheme.accentRed.withValues(alpha: 0.1),
                      borderRadius: BorderRadius.circular(10),
                      border: Border.all(color: AppTheme.accentRed.withValues(alpha: 0.3)),
                    ),
                    child: Text(trade.riskWarning, style: TextStyle(color: AppTheme.accentRed, fontSize: 12, height: 1.4)),
                  ),
                ],
              ],
            ),
          ),
        ),
      ],
    );
  }

  Widget _buildDriftRadarCard(TradeModel t) {
    Color col;
    String title;
    String desc;

    switch (t.driftStatus) {
      case DriftStatus.exitAlert:
        col = AppTheme.accentRed;
        title = 'Ausstiegssignal aktiv';
        desc = 'Die Marktbedingungen oder Stop-Limits deuten auf einen Ausstieg hin.';
        break;
      case DriftStatus.trailingActive:
        col = AppTheme.accentCyan;
        title = 'Trailing Stop aktiv nachgezogen';
        desc = 'Die KI hat den Stop-Loss zur Absicherung von Gewinnen nachgezogen.';
        break;
      case DriftStatus.driftWarning:
        col = Colors.orangeAccent;
        title = 'Leichte Drift / Kursabweichung';
        desc = 'Der Kurs bewegt sich leicht entgegen der primären Prognose.';
        break;
      case DriftStatus.onTrack:
        col = AppTheme.primaryEmerald;
        title = 'Auf Kurs • Prognose intakt';
        desc = 'Die Entwicklung entspricht der statistischen KI-Prognose.';
        break;
    }

    return Container(
      padding: const EdgeInsets.all(14),
      decoration: BoxDecoration(
        color: col.withValues(alpha: 0.1),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: col.withValues(alpha: 0.4)),
      ),
      child: Row(
        children: [
          Icon(Icons.radar, color: col, size: 22),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text('Drift-Radar: $title', style: TextStyle(color: col, fontWeight: FontWeight.bold, fontSize: 13)),
                Text(desc, style: TextStyle(color: AppTheme.textMuted, fontSize: 11)),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _sectionTitle(IconData icon, String title, Color color) {
    return Row(
      children: [
        Icon(icon, size: 16, color: color),
        const SizedBox(width: 8),
        Text(title, style: TextStyle(color: color, fontWeight: FontWeight.bold, fontSize: 13)),
      ],
    );
  }

  Widget _metricItem(String label, String value, Color color) {
    return Column(
      children: [
        Text(label, style: TextStyle(color: AppTheme.textMuted, fontSize: 11)),
        const SizedBox(height: 4),
        Text(value, style: TextStyle(color: color, fontWeight: FontWeight.bold, fontSize: 13)),
      ],
    );
  }

  Widget _paramRow(String label, String value) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 4),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text(label, style: TextStyle(color: AppTheme.textMuted, fontSize: 12)),
          Text(value, style: const TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 12)),
        ],
      ),
    );
  }
}