"use client";

import Link from "next/link";
import { useEffect, useState } from "react";
import { createPortal } from "react-dom";
import { customerContinueCheckoutUrl } from "@/lib/customer";
import { useCart } from "@/lib/cart";
import { formatPrice } from "@/lib/format";
import { PLACEHOLDER } from "@/lib/data";
import { useSession } from "@/lib/session";
import { IconClose } from "./Icons";
import { Media } from "./Media";

type Props = {
  open: boolean;
  onClose: () => void;
};

export function CartPopup({ open, onClose }: Props) {
  const { isAuthenticated } = useSession();
  const { items, itemCount, total, removeItem, setQuantity } = useCart();
  const [mounted, setMounted] = useState(false);

  useEffect(() => {
    setMounted(true);
  }, []);

  useEffect(() => {
    if (!open) return;
    const onKeyDown = (event: KeyboardEvent) => {
      if (event.key === "Escape") onClose();
    };
    document.addEventListener("keydown", onKeyDown);
    document.body.style.overflow = "hidden";
    return () => {
      document.removeEventListener("keydown", onKeyDown);
      document.body.style.overflow = "";
    };
  }, [open, onClose]);

  if (!mounted || !open) return null;

  const continueHref = customerContinueCheckoutUrl(isAuthenticated, items);

  return createPortal(
    <div>
      <button type="button" className="fixed inset-0 z-[120] bg-black/40" aria-label="بستن" onClick={onClose} />
      <div
        role="dialog"
        aria-modal="true"
        aria-label="سبد خرید"
        className="fixed inset-y-0 left-0 z-[130] flex h-dvh w-full max-w-md flex-col bg-white shadow-2xl"
      >
        <div className="flex items-center justify-between border-b border-black/5 px-5 py-4">
          <div>
            <h2 className="text-base font-extrabold">سبد خرید</h2>
            {itemCount > 0 && (
              <p className="mt-0.5 text-xs text-zinc-400">
                {itemCount.toLocaleString("fa-IR")} کالا
              </p>
            )}
          </div>
          <button
            type="button"
            onClick={onClose}
            aria-label="بستن"
            className="grid size-9 place-items-center rounded-full hover:bg-zinc-100"
          >
            <IconClose className="w-4 h-4" />
          </button>
        </div>

        <div className="flex-1 overflow-y-auto px-5 py-4">
          {items.length === 0 ? (
            <div className="flex h-full flex-col items-center justify-center text-center">
              <p className="text-sm text-zinc-500">سبد خرید شما خالی است</p>
            </div>
          ) : (
            <ul className="space-y-4">
              {items.map((item) => (
                <li key={item.id} className="flex gap-3 border-b border-black/5 pb-4 last:border-0">
                  <Link
                    href={item.slug ? `/products/${item.slug}` : "/products"}
                    onClick={onClose}
                    className="size-20 shrink-0 overflow-hidden rounded-xl border border-black/5"
                  >
                    <Media src={item.image || PLACEHOLDER.product} alt="" className="size-full" sizes="80px" />
                  </Link>
                  <div className="min-w-0 flex-1">
                    <Link
                      href={item.slug ? `/products/${item.slug}` : "/products"}
                      onClick={onClose}
                      className="line-clamp-2 text-sm font-medium leading-6 hover:text-brand"
                    >
                      {item.name}
                    </Link>
                    <div className="mt-2 flex items-center justify-between gap-2">
                      <div className="flex items-center overflow-hidden rounded-lg border border-black/10">
                        <button
                          type="button"
                          aria-label="افزایش"
                          onClick={() => setQuantity(item.id, item.quantity + 1)}
                          className="grid size-8 place-items-center text-sm hover:bg-zinc-50"
                        >
                          +
                        </button>
                        <span className="min-w-7 text-center text-xs font-bold">
                          {item.quantity.toLocaleString("fa-IR")}
                        </span>
                        <button
                          type="button"
                          aria-label="کاهش"
                          onClick={() => setQuantity(item.id, item.quantity - 1)}
                          className="grid size-8 place-items-center text-sm hover:bg-zinc-50"
                        >
                          −
                        </button>
                      </div>
                      <div className="flex items-center gap-2">
                        <span className="text-sm font-bold">
                          {formatPrice(item.price * item.quantity)}
                          <span className="mr-0.5 text-[11px] font-normal text-zinc-400">تومان</span>
                        </span>
                        <button
                          type="button"
                          onClick={() => removeItem(item.id)}
                          aria-label="حذف"
                          className="grid size-8 place-items-center rounded-lg text-zinc-400 hover:bg-brand-soft hover:text-brand"
                        >
                          <svg viewBox="0 0 24 24" fill="none" className="h-4 w-4" aria-hidden>
                            <path
                              d="M4 7h16M9 7V5a1 1 0 0 1 1-1h4a1 1 0 0 1 1 1v2m-8 0v12a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1V7M10 11v5M14 11v5"
                              stroke="currentColor"
                              strokeWidth="1.75"
                              strokeLinecap="round"
                              strokeLinejoin="round"
                            />
                          </svg>
                        </button>
                      </div>
                    </div>
                  </div>
                </li>
              ))}
            </ul>
          )}
        </div>

        <div className="border-t border-black/5 px-5 py-4">
          {items.length > 0 && (
            <div className="mb-3 flex items-center justify-between text-sm">
              <span className="text-zinc-500">جمع کل</span>
              <span className="font-extrabold">
                {formatPrice(total)}
                <span className="mr-0.5 text-xs font-normal text-zinc-400">تومان</span>
              </span>
            </div>
          )}
          {items.length > 0 ? (
            <a
              href={continueHref}
              onClick={onClose}
              className="flex w-full items-center justify-center rounded-xl bg-brand py-3 text-sm text-white hover:bg-[#e51f1f]"
            >
              ادامه
            </a>
          ) : (
            <button
              type="button"
              onClick={onClose}
              className="flex w-full items-center justify-center rounded-xl bg-brand-soft py-3 text-sm font-medium text-brand"
            >
              ادامه خرید
            </button>
          )}
        </div>
      </div>
    </div>,
    document.body,
  );
}