import { useTranslation } from '@/hooks/useI18n';
import type { BackendMatch } from '@/schemas/backend/match';
import { LatLngTuple } from 'leaflet';
import React, { useMemo } from 'react';
import { Polyline, Popup } from 'react-leaflet';
import { formatCurrency } from '../../lib/fin';

interface MatchLinesProps {
  matches: BackendMatch[];
  selectedMatchId: string | null;
  onMatchSelect: (matchId: string) => void;
}

/**
 * Individual match line component memoized to prevent unnecessary re-renders
 */
const MatchLine = React.memo<{
  match: BackendMatch;
  positions: LatLngTuple[];
  isSelected: boolean;
  onClick: () => void;
}>(({ match, positions, isSelected, onClick }) => {
  const { t } = useTranslation();

  const getLineColor = () => {
    switch (match.Status) {
      case 'live':
        return 'hsl(var(--primary))';
      case 'contracted':
        return 'hsl(var(--success))';
      case 'negotiating':
        return 'hsl(var(--warning))';
      case 'reserved':
        return 'hsl(var(--secondary))';
      default:
        return 'hsl(var(--muted-foreground))';
    }
  };

  const formatScore = (score: number) => {
    return `${(score * 100).toFixed(1)}%`;
  };

  // use central fin.formatCurrency

  return (
    <Polyline
      positions={positions}
      pathOptions={{
        color: getLineColor(),
        weight: isSelected ? 5 : 3,
        opacity: isSelected ? 1 : 0.7,
        dashArray: match.Status === 'suggested' ? '5, 5' : undefined,
      }}
      eventHandlers={{
        click: onClick,
        mouseover: (e) => {
          const layer = e.target;
          layer.setStyle({
            weight: isSelected ? 6 : 4,
            opacity: 1,
          });
        },
        mouseout: (e) => {
          const layer = e.target;
          layer.setStyle({
            weight: isSelected ? 5 : 3,
            opacity: isSelected ? 1 : 0.7,
          });
        },
      }}
    >
      <Popup>
        <div className="min-w-64">
          <div className="flex items-center justify-between mb-2">
            <h4 className="font-semibold text-sm">
              {t('matchesMap.matchConnection', 'Match Connection')}
            </h4>
            <span
              className={`text-xs px-2 py-1 rounded ${
                match.Status === 'live'
                  ? 'bg-success/20 text-success'
                  : match.Status === 'contracted'
                    ? 'bg-success/20 text-success'
                    : match.Status === 'negotiating'
                      ? 'bg-warning/20 text-warning'
                      : 'bg-muted text-muted-foreground'
              }`}
            >
              {t(`matchStatus.${match.Status}`, match.Status)}
            </span>
          </div>

          <div className="space-y-2 text-sm">
            <div className="grid grid-cols-2 gap-2">
              <div>
                <span className="text-muted-foreground">
                  {t('matchesMap.compatibility', 'Compatibility')}:
                </span>
                <div className="font-medium">{formatScore(match.CompatibilityScore)}</div>
              </div>
              <div>
                <span className="text-muted-foreground">
                  {t('matchesMap.distance', 'Distance')}:
                </span>
                <div className="font-medium">{match.DistanceKm.toFixed(1)} km</div>
              </div>
            </div>

            <div>
              <span className="text-muted-foreground">
                {t('matchesMap.economicValue', 'Economic Value')}:
              </span>
              <div className="font-medium text-success">{formatCurrency(match.EconomicValue)}</div>
            </div>

            {match.EconomicImpact?.annual_savings && (
              <div>
                <span className="text-muted-foreground">
                  {t('matchesMap.annualSavings', 'Annual Savings')}:
                </span>
                <div className="font-medium text-success">
                  {formatCurrency(match.EconomicImpact.annual_savings)}
                </div>
              </div>
            )}
          </div>

          <button
            onClick={onClick}
            className="mt-3 w-full px-3 py-2 bg-primary text-primary-foreground rounded text-sm font-medium hover:bg-primary/90 transition-colors"
          >
            {t('matchesMap.viewDetails', 'View Details')}
          </button>
        </div>
      </Popup>
    </Polyline>
  );
});

MatchLine.displayName = 'MatchLine';

const MatchLines: React.FC<MatchLinesProps> = ({ matches, selectedMatchId, onMatchSelect }) => {
  // Transform matches into line data with positions
  const matchLines = useMemo(() => {
    return matches
      .map((match) => {
        // For now, we'll need to get site coordinates from the match data
        // In a real implementation, we'd join with site data
        // For now, creating mock positions based on match ID for demonstration
        const baseLat = 55.1644; // Bugulma center
        const baseLng = 50.205;

        // Generate pseudo-random but consistent positions based on match ID
        const hash = match.ID.split('').reduce((acc, char) => acc + char.charCodeAt(0), 0);
        const lat1 = baseLat + ((hash % 100) - 50) * 0.01;
        const lng1 = baseLng + (((hash * 7) % 100) - 50) * 0.01;
        const lat2 = baseLat + (((hash * 13) % 100) - 50) * 0.01;
        const lng2 = baseLng + (((hash * 17) % 100) - 50) * 0.01;

        return {
          match,
          positions: [[lat1, lng1] as LatLngTuple, [lat2, lng2] as LatLngTuple],
          isSelected: match.ID === selectedMatchId,
        };
      })
      .filter((line) => line.positions.length === 2);
  }, [matches, selectedMatchId]);

  return (
    <>
      {matchLines.map(({ match, positions, isSelected }) => (
        <MatchLine
          key={match.ID}
          match={match}
          positions={positions}
          isSelected={isSelected}
          onClick={() => onMatchSelect(match.ID)}
        />
      ))}
    </>
  );
};

export default React.memo(MatchLines);