"use client";

import { useEffect, useState } from "react";
import Link from "next/link";
import { motion, AnimatePresence, type Variants } from "framer-motion";
import { TrptkLogo } from "../icons/TrptkLogo";
import { MenuToggleButton } from "./MenuToggleButton";
import { ThemeToggleButton } from "./ThemeToggleButton";
import { SocialButtons } from "./SocialButtons";
import { CartButton } from "@/components/cart/CartButton";
import { useCart } from "@/components/cart/CartContext";
import { AccountButton } from "@/components/auth/AccountButton";
import { GlobalSearch } from "@/components/search/GlobalSearch";

const nav = [
  { href: "/", label: "Home" },
  { href: "/blog", label: "Blog" },
  { href: "/about", label: "About" },
  { href: "/artists", label: "Artists" },
  { href: "/composers", label: "Composers" },
  { href: "/releases", label: "Releases" },
];

const overlayVariants = {
  open: {
    opacity: 1,
    pointerEvents: "auto" as const,
    transition: {
      type: "tween",
      ease: "easeInOut",
      duration: 0.1,
    },
  },
  closed: {
    opacity: 0,
    transition: {
      type: "tween",
      ease: "easeInOut",
      duration: 0.1,
      delay: 0.5,
    },
    transitionEnd: {
      pointerEvents: "none" as const,
    },
  },
} satisfies Variants;

const panelVariants = {
  open: {
    opacity: 1,
    transition: {
      type: "tween",
      ease: "easeInOut",
      duration: 0.4,
    },
  },
  closed: {
    opacity: 0,
  },
  exit: {
    opacity: 0,
    transition: {
      type: "tween",
      ease: "easeInOut",
      duration: 0.5,
      delay: 0.5,
    },
  },
} satisfies Variants;

const listVariants = {
  closed: {
    transition: {
      staggerChildren: 0.1,
      staggerDirection: -1,
    },
  },
  open: {
    transition: {
      delayChildren: 0.1,
      staggerChildren: 0.1,
    },
  },
} satisfies Variants;

const itemVariants = {
  closed: { opacity: 0, y: 8 },
  open: {
    opacity: 1,
    y: 0,
    transition: { type: "tween", ease: "easeInOut", duration: 0.35 },
  },
} satisfies Variants;

export function Header() {
  const [open, setOpen] = useState(false);
  const [searchOpen, setSearchOpen] = useState(false);
  const { itemCount } = useCart();

  useEffect(() => {
    if (open) {
      // Prevent scrolling on both html and body
      document.documentElement.style.overflow = "hidden";
      document.body.style.overflow = "hidden";
      // Prevent iOS Safari overscroll
      document.body.style.position = "fixed";
      document.body.style.width = "100%";
    } else {
      document.documentElement.style.overflow = "";
      document.body.style.overflow = "";
      document.body.style.position = "";
      document.body.style.width = "";
    }
    return () => {
      document.documentElement.style.overflow = "";
      document.body.style.overflow = "";
      document.body.style.position = "";
      document.body.style.width = "";
    };
  }, [open]);

  useEffect(() => {
    const onKeyDown = (e: KeyboardEvent) => {
      if (e.key === "Escape") setOpen(false);
    };
    window.addEventListener("keydown", onKeyDown);
    return () => window.removeEventListener("keydown", onKeyDown);
  }, []);

  return (
    <>
      {/* Main Menu */}
      <div id="masthead" className="flex w-full justify-between px-6 pt-6 md:px-8 md:pt-8">
        <Link
          href="/"
          className={`content-center overflow-hidden transition-all duration-300 ease-in-out ${searchOpen ? "w-0 pointer-events-none opacity-0 md:w-auto md:pointer-events-auto md:opacity-100" : "opacity-100"}`}
        >
          <TrptkLogo width={90} />
        </Link>

        <motion.div
          className={`flex gap-3 text-lg ${searchOpen ? "flex-1 md:flex-none" : ""}`}
          initial={{ opacity: 0 }}
          animate={{ opacity: 1 }}
          transition={{ type: "tween", ease: "easeInOut", duration: 0.3 }}
        >
          <GlobalSearch onOpenChange={setSearchOpen} />
          <div className={itemCount > 0 ? (searchOpen ? "hidden md:block" : "") : "hidden"}>
            <CartButton />
          </div>
          <MenuToggleButton open={open} onClick={() => setOpen(true)} className={searchOpen ? "hidden md:flex" : ""} />
        </motion.div>
      </div>

      <AnimatePresence>
        {open && (
          <motion.div
            className="fixed inset-0 z-[60]"
            variants={overlayVariants}
            initial="closed"
            animate="open"
            exit="closed"
            onClick={() => setOpen(false)}
          >
            {/* Full-screen Menu */}
            <motion.aside
              className="relative flex h-full w-full flex-col bg-lightbg/85 backdrop-blur-lg transition-[background-color] duration-1000 dark:bg-darkbg/85"
              variants={panelVariants}
              initial="closed"
              animate="open"
              exit="exit"
              onClick={() => setOpen(false)}
            >
              {/* Top bar */}
              <div className="flex w-full justify-between p-6 md:p-8" onClick={(e) => e.stopPropagation()}>
                <Link href="/" className="content-center">
                  <TrptkLogo width={90} />
                </Link>
                <div className="flex gap-3 text-lg">
                  <ThemeToggleButton />
                  <AccountButton />
                  <MenuToggleButton open={open} onClick={() => setOpen(false)} />
                </div>
              </div>

              {/* Center nav */}
              <motion.nav
                className="flex flex-1 items-center justify-center px-6"
                initial="closed"
                animate="open"
                exit="closed"
              >
                <motion.ul className="space-y-6 text-center font-argesta" variants={listVariants}>
                  {nav.map((item) => (
                    <motion.li key={item.href} variants={itemVariants}>
                      <Link
                        href={item.href}
                        onClick={() => setOpen(false)}
                        className="text-3xl transition-colors duration-200 ease-in-out hover:text-trptkblue dark:hover:text-white"
                      >
                        {item.label}
                      </Link>
                    </motion.li>
                  ))}
                </motion.ul>
              </motion.nav>

              {/* Bottom bar */}
              <div className="flex w-full justify-between p-6 md:p-8" onClick={(e) => e.stopPropagation()}>
                <div className="content-center text-sm text-lightsec dark:text-darksec">
                  <span className="mr-2 font-silkasb">TRPTK</span> Polycast Media Group B.V.
                </div>
                <SocialButtons />
              </div>
            </motion.aside>
          </motion.div>
        )}
      </AnimatePresence>
    </>
  );
}