"use client";

import { AnimatePresence, motion } from "framer-motion";
import { LayoutDashboard, Menu, X } from "lucide-react";
import Link from "next/link";
import { usePathname } from "next/navigation";
import { useLocale, useTranslations } from "next-intl";
import { useState } from "react";

import { Container } from "@/components/layout/container";
import { LocaleToggle } from "@/components/layout/locale-toggle";
import { SiteLogo } from "@/components/layout/site-logo";
import { ThemeToggle } from "@/components/theme-toggle";
import { Button } from "@/components/ui/button";
import { getLocalizedPath, stripLocalePrefix } from "@/lib/locale";
import { cn } from "@/lib/utils";

const navItems = [
  { key: "home", path: "" },
  { key: "portfolio", path: "/portfolio" },
  { key: "products", path: "/products" },
  { key: "about", path: "/about" },
  { key: "contact", path: "/contact" },
];

type SiteHeaderProps = {
  isAdmin?: boolean;
  lightLogoUrl?: string | null;
  darkLogoUrl?: string | null;
};

function isNavItemActive(currentPath: string, itemPath: string) {
  if (itemPath === "/") {
    return currentPath === "/";
  }

  return currentPath === itemPath || currentPath.startsWith(`${itemPath}/`);
}

function NavLinks({
  onNavigate,
  mobile = false,
}: {
  onNavigate?: () => void;
  mobile?: boolean;
}) {
  const locale = useLocale();
  const pathname = usePathname();
  const t = useTranslations("navigation");
  const currentPath = stripLocalePrefix(pathname);

  return (
    <>
      {navItems.map((item) => (
        (() => {
          const itemPath = item.path || "/";
          const isActive = isNavItemActive(currentPath, itemPath);

          return (
            <Link
              key={item.key}
              href={getLocalizedPath(locale, itemPath)}
              className={cn(
                "relative z-10 rounded-[var(--radius-pill)] transition-colors",
                mobile ? "px-4 py-3 text-sm font-medium" : "px-3.5 py-2 text-sm font-medium xl:px-4",
                isActive
                  ? "text-primary-foreground"
                  : "text-[hsl(var(--hero-ink)/0.62)] hover:text-[hsl(var(--hero-ink))] dark:text-muted-foreground dark:hover:text-foreground",
              )}
              onClick={onNavigate}
            >
              {isActive ? (
                <motion.span
                  layoutId="site-header-active-tab"
                  className="absolute inset-0 -z-10 rounded-[var(--radius-pill)] bg-primary shadow-[0_14px_34px_-22px_hsl(var(--brand-primary)/0.65)]"
                  transition={{ type: "spring", stiffness: 380, damping: 30 }}
                />
              ) : null}
              {t(item.key)}
            </Link>
          );
        })()
      ))}
    </>
  );
}

export function SiteHeader({
  isAdmin = false,
  lightLogoUrl,
  darkLogoUrl,
}: SiteHeaderProps) {
  const [isOpen, setIsOpen] = useState(false);
  const pathname = usePathname();
  const locale = useLocale();
  const t = useTranslations("navigation");
  const isArabic = locale === "ar";
  const desktopControlRailClassName =
    "inline-flex items-center gap-1 rounded-[var(--radius-pill)] border border-black/6 bg-white/24 p-1 shadow-[0_14px_34px_-24px_rgba(15,23,42,0.18)] backdrop-blur-[18px] dark:border-white/10 dark:bg-white/4 dark:shadow-[0_20px_48px_-28px_rgba(0,0,0,0.58)]";
  const desktopControlButtonClassName =
    "h-9 w-9 rounded-full border border-transparent p-0 text-[hsl(var(--hero-ink)/0.76)] hover:border-black/5 hover:bg-white/36 hover:text-[hsl(var(--hero-ink))] dark:text-foreground dark:hover:border-white/10 dark:hover:bg-white/10";
  const mobileControlButtonClassName =
    "h-10 w-10 rounded-full border border-black/6 bg-white/32 p-0 text-[hsl(var(--hero-ink)/0.8)] hover:bg-white/42 hover:text-[hsl(var(--hero-ink))] dark:border-white/10 dark:bg-white/6 dark:text-foreground dark:hover:bg-white/10";

  return (
    <header className="fixed inset-x-0 top-3 z-40 bg-transparent">
      <Container className="max-w-[88rem]">
        <div className="relative grid min-h-[4.5rem] grid-cols-[auto_1fr_auto] items-center gap-3 lg:min-h-[5rem]">
          <div className="col-start-1 flex items-center justify-self-start">
            <Link
              href={getLocalizedPath(locale)}
              className="inline-flex items-center rounded-[var(--radius-pill)] px-1 py-1 sm:py-1.5 lg:py-2"
            >
              <SiteLogo
                lightLogoUrl={lightLogoUrl}
                darkLogoUrl={darkLogoUrl}
                alt="mohfarawati"
                priority
                className="h-7 opacity-88 sm:h-8 lg:h-9"
              />
            </Link>
          </div>

          <div className="pointer-events-none absolute left-1/2 top-1/2 hidden -translate-x-1/2 -translate-y-1/2 lg:flex">
            <motion.nav
              initial={{ opacity: 0, y: -8 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.28, ease: "easeOut" }}
              className={cn(
                "pointer-events-auto inline-flex items-center gap-1 rounded-[var(--radius-pill)] border border-black/6 bg-white/24 p-1.5 shadow-[0_14px_34px_-24px_rgba(15,23,42,0.18)] backdrop-blur-[18px] dark:border-white/10 dark:bg-white/4 dark:shadow-[0_20px_48px_-28px_rgba(0,0,0,0.58)]",
                isArabic ? "w-auto max-w-none" : "min-w-[27rem] max-w-[42rem]",
              )}
            >
              <NavLinks />
            </motion.nav>
          </div>

          <div className="hidden items-center justify-end lg:flex">
            <motion.div
              initial={{ opacity: 0, y: -8 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.28, ease: "easeOut", delay: 0.03 }}
              className={desktopControlRailClassName}
            >
              <LocaleToggle
                locale={locale}
                className={desktopControlButtonClassName}
              />
              <ThemeToggle
                ariaLabel={t("themeToggle")}
                variant="ghost"
                className={desktopControlButtonClassName}
              />
              {isAdmin ? (
                <Button asChild variant="ghost" size="icon" className={desktopControlButtonClassName}>
                  <Link href="/root" aria-label={t("root")}>
                    <LayoutDashboard className="h-4 w-4" />
                  </Link>
                </Button>
              ) : null}
            </motion.div>
          </div>

          <Button
            type="button"
            onClick={() => setIsOpen((open) => !open)}
            variant="ghost"
            size="icon"
            className="col-start-3 ml-auto h-11 w-11 justify-self-end rounded-[var(--radius-pill)] border border-black/6 bg-white/24 text-[hsl(var(--hero-ink))] shadow-[0_14px_34px_-24px_rgba(15,23,42,0.18)] backdrop-blur-[18px] hover:bg-white/34 dark:border-white/10 dark:bg-white/4 dark:text-foreground dark:shadow-[0_20px_48px_-28px_rgba(0,0,0,0.58)] dark:hover:bg-white/10 lg:hidden"
            aria-label={isOpen ? t("closeMenu") : t("openMenu")}
          >
            <motion.span
              animate={{ rotate: isOpen ? 180 : 0, scale: isOpen ? 0.96 : 1 }}
              transition={{ duration: 0.2, ease: "easeOut" }}
              className="flex items-center justify-center"
            >
              {isOpen ? <X className="h-4 w-4" /> : <Menu className="h-4 w-4" />}
            </motion.span>
          </Button>
        </div>
      </Container>

      <AnimatePresence initial={false}>
        {isOpen ? (
          <motion.div
            initial={{ opacity: 0, y: -14 }}
            animate={{ opacity: 1, y: 0 }}
            exit={{ opacity: 0, y: -10 }}
            transition={{ duration: 0.22, ease: "easeOut" }}
            className="bg-transparent lg:hidden"
          >
            <Container className="pb-2 pt-3">
              <motion.div
                initial={{ opacity: 0, scale: 0.98 }}
                animate={{ opacity: 1, scale: 1 }}
                exit={{ opacity: 0, scale: 0.98 }}
                transition={{ duration: 0.2, ease: "easeOut" }}
                className="overflow-hidden rounded-surface border border-black/6 bg-[linear-gradient(180deg,rgba(255,255,255,0.46),rgba(255,255,255,0.24))] shadow-[inset_0_1px_0_rgba(255,255,255,0.54),0_16px_34px_-24px_rgba(15,23,42,0.24)] backdrop-blur-[20px] dark:border-white/12 dark:bg-[linear-gradient(180deg,rgba(255,255,255,0.09),rgba(255,255,255,0.03))] dark:shadow-[inset_0_1px_0_rgba(255,255,255,0.12),inset_0_-1px_0_rgba(255,255,255,0.03),0_20px_48px_-28px_rgba(0,0,0,0.72)]"
              >
                <motion.nav
                  initial="closed"
                  animate="open"
                  exit="closed"
                  variants={{
                    open: {
                      transition: {
                        staggerChildren: 0.04,
                        delayChildren: 0.02,
                      },
                    },
                    closed: {
                      transition: {
                        staggerChildren: 0.03,
                        staggerDirection: -1,
                      },
                    },
                  }}
                  className="flex flex-col gap-1 p-2"
                >
                  {navItems.map((item) => {
                    const itemPath = item.path || "/";
                    const isActive = isNavItemActive(stripLocalePrefix(pathname), itemPath);

                    return (
                      <motion.div
                        key={item.key}
                        variants={{
                          open: { opacity: 1, y: 0 },
                          closed: { opacity: 0, y: -8 },
                        }}
                        transition={{ duration: 0.18, ease: "easeOut" }}
                      >
                        <Link
                          href={getLocalizedPath(locale, itemPath)}
                          className={cn(
                            "flex items-center justify-between rounded-nested px-4 py-3 text-sm font-medium transition-colors",
                            isActive
                              ? "bg-white/72 text-[hsl(var(--hero-ink))] shadow-[0_10px_20px_-18px_rgba(15,23,42,0.24)] dark:bg-white/10 dark:text-foreground"
                              : "text-[hsl(var(--hero-ink)/0.78)] hover:bg-white/40 hover:text-[hsl(var(--hero-ink))] dark:text-foreground dark:hover:bg-white/6",
                          )}
                          onClick={() => setIsOpen(false)}
                        >
                          <span>{t(item.key)}</span>
                          <span className="text-xs uppercase tracking-[0.18em] opacity-60">
                            0{navItems.findIndex((navItem) => navItem.key === item.key) + 1}
                          </span>
                        </Link>
                      </motion.div>
                    );
                  })}
                </motion.nav>

                <motion.div
                  initial={{ opacity: 0, y: 10 }}
                  animate={{ opacity: 1, y: 0 }}
                  exit={{ opacity: 0, y: 8 }}
                  transition={{ duration: 0.18, ease: "easeOut", delay: 0.04 }}
                  className="border-t border-black/6 bg-[linear-gradient(180deg,rgba(255,255,255,0.2),rgba(255,255,255,0.08))] p-2 dark:border-white/8 dark:bg-[linear-gradient(180deg,rgba(255,255,255,0.04),rgba(255,255,255,0.02))]"
                >
                  <div className="flex items-center justify-between gap-2">
                    <LocaleToggle
                      locale={locale}
                      className={mobileControlButtonClassName}
                    />
                    <div className="flex items-center gap-2">
                      <ThemeToggle
                        ariaLabel={t("themeToggle")}
                        variant="ghost"
                        className={mobileControlButtonClassName}
                      />
                      {isAdmin ? (
                        <Button asChild variant="ghost" size="icon" className={mobileControlButtonClassName}>
                          <Link href="/root" aria-label={t("root")} onClick={() => setIsOpen(false)}>
                            <LayoutDashboard className="h-4 w-4" />
                          </Link>
                        </Button>
                      ) : null}
                    </div>
                  </div>
                </motion.div>
              </motion.div>
            </Container>
          </motion.div>
        ) : null}
      </AnimatePresence>
    </header>
  );
}