"use client";

import Link from "next/link";
import { usePathname } from "next/navigation";
import { isActivePath, mobileNavItems } from "@/lib/navigation";
import { cn } from "@/lib/utils";

/**
 * Mobile bottom tab bar. Shown only < md (the side NavRail is hidden there).
 * Mirrors the desktop nav items but as a thumb-friendly dock with labels and a
 * top active indicator. Safe-area aware for notched devices.
 */
export function MobileNav() {
  const path = usePathname() ?? "/";

  return (
    <nav className="glass fixed inset-x-0 bottom-0 z-40 flex items-stretch justify-around rounded-t-[20px] px-2 pb-[calc(0.4rem+env(safe-area-inset-bottom))] pt-2 md:hidden">
      {mobileNavItems.map((item) => {
        const active = isActivePath(path, item.matchPrefix);
        return (
          <Link
            key={item.href}
            href={item.href}
            aria-label={item.label}
            aria-current={active ? "page" : undefined}
            className={cn(
              "game-nav-item relative flex min-h-[44px] flex-1 flex-col items-center justify-center rounded-t-[20px] px-2 pt-2 pb-[calc(0.4rem+env(safe-area-inset-bottom))] md:hidden",
              active
                ? "is-active text-white"
                : "text-ink-faint hover:text-ink-soft",
            )}
          >
            {active && (
              <span
                aria-hidden="true"
                className="absolute inset-x-4 top-0 h-[2px] bg-white shadow-[0_0_8px_var(--color-signal-glow)]"
              />
            )}
            <span className="game-sweep" aria-hidden="true">
              <i />
            </span>
            <item.icon
              className="relative z-10 size-[20px]"
              strokeWidth={active ? 2.4 : 2}
            />
            {item.label}
          </Link>
        );
      })}
    </nav>
  );
}