import React, { useMemo } from 'react';
import { NavLink } from 'react-router-dom';
import { type LucideIcon } from 'lucide-react';
import { cn } from '@/lib/utils';
import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip';

export interface NavItem {
  icon: LucideIcon;
  to: string;
  end?: boolean;
  label: string;
}

interface NavPillProps {
  item: NavItem;
  onNavigate?: () => void;
  badge?: number;
  badgeNames?: string[];
}

export const NavPill = React.memo(function NavPill({ item, onNavigate, badge = 0, badgeNames = [] }: NavPillProps) {
  const Icon = useMemo(() => item.icon, [item.icon]);
  const to = useMemo(() => item.to, [item.to]);
  const end = useMemo(() => item.end, [item.end]);
  const label = useMemo(() => item.label, [item.label]);

  return (
    <NavLink
      to={to}
      end={end}
      onClick={onNavigate}
      className={({ isActive }) => cn(
        'inline-flex items-center gap-2 rounded-full px-3 py-2 text-sm font-medium transition-all',
        'focus-visible:outline-none focus-visible:ring-[3px] focus-visible:ring-ring/50',
        isActive
          ? 'bg-primary text-primary-foreground shadow-sm shadow-primary/20'
          : 'text-muted-foreground hover:bg-accent hover:text-accent-foreground hover:shadow-sm'
      )}
    >
      <Icon className="h-4 w-4" />
      <span>{label}</span>
      {badge > 0 && (
        <TooltipProvider delayDuration={300}>
          <Tooltip>
            <TooltipTrigger asChild>
              <span className="ml-0.5 flex h-4 min-w-[1rem] items-center justify-center rounded-full bg-rose-500 px-1 text-[10px] font-bold leading-none text-white">
                {badge > 99 ? '99+' : badge}
              </span>
            </TooltipTrigger>
            <TooltipContent side="top" className="max-w-[200px]">
              <p className="font-semibold mb-1">{badge} past due</p>
              {badgeNames.slice(0, 5).map(name => (
                <p key={name} className="text-xs opacity-80">· {name}</p>
              ))}
              {badgeNames.length > 5 && (
                <p className="text-xs opacity-60">+{badgeNames.length - 5} more</p>
              )}
            </TooltipContent>
          </Tooltip>
        </TooltipProvider>
      )}
    </NavLink>
  );
});

NavPill.displayName = 'NavPill';