import React, { useMemo } from 'react';
import { useMapActions, useMapInteraction } from '@/contexts/MapContexts.tsx';
import { useTranslation } from '@/hooks/useI18n.tsx';
import { useOrganizations } from '@/hooks/useOrganizations.ts';
import { ExternalLink } from 'lucide-react';
import { Building2 } from 'lucide-react';
import Button from '@/components/ui/Button.tsx';
import Separator from '@/components/ui/Separator.tsx';
import HistoricalContextAI from '@/components/map/HistoricalContextAI.tsx';

const InfoLine = ({ label, value }: { label: string; value?: string | React.ReactNode }) => {
  if (!value) return null;
  return (
    <>
      <dt className="text-xs text-muted-foreground">{label}</dt>
      <dd className="text-sm font-medium mb-3">{value}</dd>
    </>
  );
};

const HistoricalSidebarPreview = () => {
  const { organizations } = useOrganizations();
  const { t } = useTranslation();
  const { selectedLandmark: landmark } = useMapInteraction();
  const { handleViewOrganization: onViewOrganization } = useMapActions();

  const relatedOrg = useMemo(() => {
    if (!landmark?.relatedOrgId) return null;
    return organizations.find((org) => org.ID === landmark.relatedOrgId) || null;
  }, [landmark, organizations]);

  if (!landmark) return null;

  return (
    <div className="p-4 space-y-4">
      {landmark.imageUrl ? (
        <div className="w-full h-40 rounded-lg overflow-hidden bg-muted">
          <img
            src={landmark.imageUrl}
            alt={landmark.name}
            className="w-full h-full object-cover"
            loading="lazy"
            decoding="async"
            onError={(e) => {
              (e.target as HTMLImageElement).style.display = 'none';
            }}
          />
        </div>
      ) : (
        <div className="w-full h-40 rounded-lg bg-muted flex items-center justify-center">
          <Building2 className="h-16 h-4 text-current text-muted-foreground w-16 w-4" />
        </div>
      )}

      <div>
        <p className="text-sm text-primary">{landmark.period}</p>
        <h3 className="text-lg font-semibold">{landmark.name}</h3>
      </div>

      <Separator />

      <HistoricalContextAI landmark={landmark} />

      <Separator />

      <div>
        <h4 className="text-base font-semibold mb-3">Местоположение и статус</h4>
        <dl>
          <InfoLine label="Адрес" value={landmark.address} />
          <InfoLine label="Текущий статус" value={landmark.currentStatus} />
          {relatedOrg && (
            <>
              <dt className="text-xs text-muted-foreground">Связанная организация</dt>
              <dd className="text-sm font-medium">
                {relatedOrg.Name}
                <Button
                  size="sm"
                  className="w-full mt-2"
                  onClick={() => onViewOrganization(relatedOrg)}
                >
                  <ExternalLink className="h-4 mr-2 text-current text-primary-foreground w-4" />
                  {t('mapSidebar.details.viewOrganization')}
                </Button>
              </dd>
            </>
          )}
        </dl>
      </div>

      <Separator />

      <div>
        <h4 className="text-base font-semibold mb-3">Исторический контекст</h4>
        <dl>
          <InfoLine label="Основатель/Владелец" value={landmark.builder} />
          <InfoLine label="Архитектор" value={landmark.architect} />
          <InfoLine label="Изначальное назначение" value={landmark.originalPurpose} />
          {landmark.historicalNotes && landmark.historicalNotes.length > 0 && (
            <InfoLine
              label="Историческая справка"
              value={
                <ul className="space-y-1 list-disc list-inside">
                  {landmark.historicalNotes.map((note, i) => (
                    <li key={i}>{note}</li>
                  ))}
                </ul>
              }
            />
          )}
        </dl>
      </div>
    </div>
  );
};

export default HistoricalSidebarPreview;