import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

import '../../../l10n/generated/app_localizations.dart';
import '../data/plant_diagnosis_service.dart';

/// Zeigt das Diagnose-Ergebnis als scrollbares Bottom-Sheet — sowohl für
/// eine frische Untersuchung (Detail-Screen) als auch für Einträge aus der
/// Untersuchungs-Seite ([createdAt] gesetzt).
Future<void> showDiagnosisSheet(
  BuildContext context, {
  required DiagnosisResult result,
  required String plantNickname,
  DateTime? createdAt,
}) {
  final l10n = AppLocalizations.of(context);
  final locale = Localizations.localeOf(context).toString();
  return showModalBottomSheet<void>(
    context: context,
    isScrollControlled: true,
    builder: (sheetContext) {
      final theme = Theme.of(sheetContext);
      final healthyColor = theme.brightness == Brightness.dark
          ? Colors.green.shade300
          : Colors.green.shade700;
      return DraggableScrollableSheet(
        expand: false,
        initialChildSize: 0.6,
        maxChildSize: 0.95,
        builder: (context, scrollController) => ListView(
          controller: scrollController,
          padding: const EdgeInsets.all(24),
          children: [
            if (!result.matchesSpecies) ...[
              Container(
                padding: const EdgeInsets.all(12),
                decoration: BoxDecoration(
                  color: theme.colorScheme.errorContainer,
                  borderRadius: BorderRadius.circular(12),
                ),
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Icon(
                      Icons.swap_horiz,
                      color: theme.colorScheme.onErrorContainer,
                    ),
                    const SizedBox(width: 12),
                    Expanded(
                      child: Text(
                        l10n.diagnosisSpeciesMismatch(plantNickname),
                        style: theme.textTheme.bodyMedium?.copyWith(
                          color: theme.colorScheme.onErrorContainer,
                        ),
                      ),
                    ),
                  ],
                ),
              ),
              const SizedBox(height: 16),
            ],
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Icon(
                  result.healthy
                      ? Icons.check_circle
                      : Icons.warning_amber_rounded,
                  size: 32,
                  color:
                      result.healthy ? healthyColor : theme.colorScheme.error,
                ),
                const SizedBox(width: 12),
                Expanded(
                  child: Text(
                    result.summary,
                    style: theme.textTheme.titleLarge,
                  ),
                ),
              ],
            ),
            if (createdAt != null) ...[
              const SizedBox(height: 8),
              Text(
                l10n.diagnosisDate(
                  DateFormat('d. MMMM y, HH:mm', locale).format(createdAt),
                ),
                style: theme.textTheme.bodySmall?.copyWith(
                  color: theme.colorScheme.onSurfaceVariant,
                ),
              ),
            ],
            if (result.details.isNotEmpty) ...[
              const SizedBox(height: 16),
              Text(result.details, style: theme.textTheme.bodyLarge),
            ],
            if (result.treatment.isNotEmpty) ...[
              const SizedBox(height: 20),
              Text(
                l10n.diagnosisTreatmentTitle,
                style: theme.textTheme.titleMedium,
              ),
              const SizedBox(height: 4),
              Text(result.treatment, style: theme.textTheme.bodyLarge),
            ],
            if (result.prevention.isNotEmpty) ...[
              const SizedBox(height: 20),
              Text(
                l10n.diagnosisPreventionTitle,
                style: theme.textTheme.titleMedium,
              ),
              const SizedBox(height: 4),
              Text(result.prevention, style: theme.textTheme.bodyLarge),
            ],
            const SizedBox(height: 16),
            Text(
              l10n.diagnosisDisclaimer,
              style: theme.textTheme.bodySmall?.copyWith(
                color: theme.colorScheme.onSurfaceVariant,
              ),
            ),
          ],
        ),
      );
    },
  );
}