'use client';

import * as React from 'react';
import { usePathname } from 'next/navigation';
import { TransitionLink } from '@/components/ui/TransitionLink';
import { Home, Briefcase, Users, Mail } from 'lucide-react';
import { motion } from 'framer-motion';

export interface NavLink {
  label: string;
  url: string;
}

interface MobileBottomNavProps {
  navLinks: NavLink[];
  currentLocale: string;
}

export function MobileBottomNav({ navLinks, currentLocale }: MobileBottomNavProps) {
  const pathname = usePathname() || '/';

  // Construct our bottom nav items based on the passed links
  const items = React.useMemo(() => {
    const homeUrl = `/${currentLocale}`;
    
    // Find the specific links from the provided navLinks (which might be translated)
    // We do a simple match based on index or keywords if needed, but since we know the order:
    // 0: Kompetenzen, 1: Über uns, 2: Karriere, 3: Messen
    const competenciesUrl = navLinks[0]?.url || `/${currentLocale}/kompetenzen`;
    const aboutUrl = navLinks[1]?.url || `/${currentLocale}/ueber-uns`;
    const contactUrl = `/${currentLocale}/${currentLocale === 'de' ? 'kontakt' : 'contact'}`;

    return [
      {
        label: currentLocale === 'de' ? 'Start' : 'Home',
        url: homeUrl,
        icon: <Home className="w-6 h-6 mb-1" strokeWidth={2} />,
        exactMatch: true
      },
      {
        label: navLinks[0]?.label || (currentLocale === 'de' ? 'Kompetenzen' : 'Competencies'),
        url: competenciesUrl,
        icon: <Briefcase className="w-6 h-6 mb-1" strokeWidth={2} />
      },
      {
        label: navLinks[1]?.label || (currentLocale === 'de' ? 'Über uns' : 'About Us'),
        url: aboutUrl,
        icon: <Users className="w-6 h-6 mb-1" strokeWidth={2} />
      },
      {
        label: currentLocale === 'de' ? 'Kontakt' : 'Contact',
        url: contactUrl,
        icon: <Mail className="w-6 h-6 mb-1" strokeWidth={2} />
      }
    ];
  }, [currentLocale, navLinks]);

  return (
    <div className="md:hidden fixed bottom-0 left-0 right-0 z-50 px-2 pb-6 pt-2 bg-gradient-to-t from-white via-white to-white/90 backdrop-blur-xl border-t border-neutral-200/50 shadow-[0_-8px_32px_rgba(0,0,0,0.05)] safe-area-bottom">
      <nav className="flex justify-around items-center max-w-md mx-auto">
        {items.map((item) => {
          // Determine if active
          const mappedUrl = item.url.startsWith('/') && !item.url.match(/^\/(en|de)/) 
            ? `/${currentLocale}${item.url}` 
            : item.url;
            
          const isActive = item.exactMatch 
            ? pathname === mappedUrl 
            : (pathname === mappedUrl || (mappedUrl !== `/${currentLocale}` && pathname?.startsWith(`${mappedUrl}/`)));

          return (
            <TransitionLink 
              key={item.label}
              href={mappedUrl}
              className={`relative flex flex-col items-center justify-center w-full min-h-[44px] py-1 transition-colors duration-300 select-none ${
                isActive ? 'text-primary' : 'text-neutral-500 hover:text-neutral-900'
              }`}
            >
              <div className="relative flex flex-col items-center justify-center">
                {/* Active Icon Background */}
                {isActive && (
                  <motion.div
                    layoutId="mobile-nav-active-bg"
                    className="absolute inset-0 bg-primary/10 rounded-full scale-150"
                    transition={{ type: 'spring', stiffness: 500, damping: 30 }}
                  />
                )}
                
                {/* Icon wrapper to ensure it sits above the background */}
                <div className="relative z-10 transition-transform duration-300 active:scale-90">
                  {item.icon}
                </div>
              </div>
              <span className="text-[10px] font-semibold mt-0.5 tracking-wide z-10">{item.label}</span>
            </TransitionLink>
          );
        })}
      </nav>
    </div>
  );
}