'use client';
import Link from 'next/link';
import { usePathname } from 'next/navigation';
import { useEffect, useState } from 'react';
import { ClipboardList, Droplets, Receipt, Users, type LucideIcon } from 'lucide-react';
import { CLOCK_TABS } from '@/lib/clock-access';
import type { UserAccess } from '@/lib/auth-policy';

const ICONS: Record<string, LucideIcon> = { '/clock': Users, '/clock/stock': Droplets, '/clock/job-cards': ClipboardList, '/clock/slips': Receipt };

/** Mobile-app style tab bar. Each access level sees only its own tabs. Hidden on sign-in / password screens. */
export function ClockBottomNav({ access = 'full' }: { access?: UserAccess }) {
  const path = usePathname();
  // Highlight the tapped tab at once: the next page takes a moment to load and an
  // unchanged bar reads as "the tap did not register".
  const [tapped, setTapped] = useState<string | null>(null);
  useEffect(() => setTapped(null), [path]);
  if (path.startsWith('/clock/login') || path.startsWith('/clock/change-password')) return null;
  const tabs = CLOCK_TABS[access];
  return <nav aria-label="Plant app" className="fixed inset-x-0 bottom-0 z-40 border-t border-border bg-surface pb-[env(safe-area-inset-bottom)]">
    <ul className="mx-auto max-w-3xl grid" style={{ gridTemplateColumns: `repeat(${tabs.length}, minmax(0, 1fr))` }}>
      {tabs.map(({ href, label }) => {
        const Icon = ICONS[href] ?? Users;
        const here = tapped ?? path;
        const active = href === '/clock' ? here === '/clock' : here.startsWith(href);
        return <li key={href}><Link href={href} onClick={() => setTapped(href)} aria-current={active ? 'page' : undefined}
          className={`flex min-h-[56px] flex-col items-center justify-center gap-0.5 text-xs font-medium ${active ? 'text-[#30638E]' : 'text-text-muted'}`}>
          <Icon size={22} strokeWidth={active ? 2.4 : 1.8}/>{label}</Link></li>;
      })}
    </ul>
  </nav>;
}