import 'package:flutter/material.dart';

import '../data/repository.dart';
import '../theme/lawheatmap_tokens.dart';
import '../widgets/lawheatmap_card.dart';

class HubStatusPage extends StatelessWidget {
  const HubStatusPage({super.key, required this.repository});

  final EvaluationRepository repository;

  @override
  Widget build(BuildContext context) {
    final t = Theme.of(context).textTheme;
    return SingleChildScrollView(
      padding: const EdgeInsets.all(LawHeatmapSpace.xl),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text('Ch∆In Hub', style: t.displaySmall),
          const SizedBox(height: LawHeatmapSpace.xs),
          Text(
            'Status der Verbindung zum lokalen Hub und des Audit-Logs.',
            style: t.bodyLarge?.copyWith(color: LawHeatmapColors.mute),
          ),
          const SizedBox(height: LawHeatmapSpace.lg),
          LawHeatmapCard(
            accent: true,
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                _row('Modus', repository.mode.toUpperCase(), t),
                _row('Quelle', repository.hubLabel, t),
                _row('gRPC-Endpunkt', '— (Phase-0-Stub)', t),
                _row('Audit-DB', '~/.chain/chain.db (geplant)', t),
                _row('Hash-Tag', 'CHAIN-EVENT-V3', t),
              ],
            ),
          ),
          const SizedBox(height: LawHeatmapSpace.lg),
          LawHeatmapCard(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text('Geplante Live-Anbindung', style: t.headlineSmall),
                const SizedBox(height: LawHeatmapSpace.sm),
                Text(
                  '1. `chain serve` startet lokal auf Port 50051.\n'
                  '2. Diese App liest `~/.chain/hub-auth-token` und '
                  'verbindet via gRPC.\n'
                  '3. Capability `text.akoma_normalize@^0` muss '
                  'installiert sein (`chain install text.akoma_normalize`).\n'
                  '4. Pilot-Flow `flows/durchstich-gewo-14.yaml` läuft '
                  'gegen GewO §14.\n'
                  '5. Jedes step.completed-Event landet im Audit-Log; '
                  'die Repository-Implementierung tauscht von MockRepository '
                  'auf HubRepository (gleiches Interface, kein UI-Wechsel).',
                  style: t.bodyLarge?.copyWith(
                    height: 1.6,
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _row(String label, String value, TextTheme t) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 4),
      child: Row(
        children: [
          SizedBox(
            width: 160,
            child: Text(label,
                style: t.labelLarge
                    ?.copyWith(color: LawHeatmapColors.mute)),
          ),
          Expanded(
            child: Text(value,
                style: t.bodyLarge
                    ?.copyWith(fontFamily: LawHeatmapTypography.mono)),
          ),
        ],
      ),
    );
  }
}