"use client";

import { useGetFoods } from "@/app/[name]/(Main)/hooks/useMenuData";
import { useGetProfile } from "@/app/[name]/(Profile)/profile/hooks/userProfileData";
import Button from "@/components/button/PrimaryButton";
import NotificationBellIcon from "@/components/icons/NotificationBellIcon";
import MenuItem from "@/components/listview/MenuItem";
import MenuItemRenderer from "@/components/listview/MenuItemRenderer";
import PagerModal from "@/components/pager/PagerModal";
import Prompt from "@/components/utils/Prompt";
import { ArrowLeft, Trash } from "iconsax-react";
import Image from "next/image";
import { useRouter } from "next/navigation";
import React from "react";
import { useTranslation } from "react-i18next";
import { useGetAbout } from "../about/hooks/useAboutData";
import CartSkeleton from "./components/CartSkeleton";
import CartSummary from "./components/CartSummary";
import { useCart } from "./hook/useCart";
import { useGetCartItems } from "./hooks/useCartData";
import {
  cartItemsToFoods,
  guestCartItemsToFoods,
  hasCartEntries,
} from "./lib/cartUtils";

const CartPage = () => {
  const { t } = useTranslation("parallels", { keyPrefix: "Cart" });
  const router = useRouter();
  const { isSuccess } = useGetProfile();
  const { clearCart, items } = useCart();
  const { data: cartData, isPending: cartPending } = useGetCartItems(isSuccess);
  const { data: foodsResponse } = useGetFoods();
  const { data: aboutData } = useGetAbout();
  const [showClearConfirm, setShowClearConfirm] = React.useState(false);
  const [showPagerModal, setShowPagerModal] = React.useState(false);

  const isPremium = aboutData?.data?.plan === "premium";

  const cartFoods = React.useMemo(() => {
    const foods = foodsResponse?.data ?? [];
    if (isSuccess) {
      const apiItems = cartData?.data?.items ?? [];
      return cartItemsToFoods(apiItems, foods);
    }
    return guestCartItemsToFoods(items, foods);
  }, [isSuccess, cartData?.data?.items, items, foodsResponse?.data]);

  const hasItems = React.useMemo(() => {
    if (isSuccess) {
      return (cartData?.data?.totalItems ?? 0) > 0 || hasCartEntries(items);
    }
    return hasCartEntries(items);
  }, [isSuccess, cartData?.data?.totalItems, items]);

  const guestAwaitingMenu =
    !isSuccess && hasItems && cartFoods.length === 0 && !foodsResponse?.data;

  const showInitialCartLoad = isSuccess && cartPending && !cartData && hasItems;

  const isCartEmpty = !hasItems;

  const handleClearCart = (e: React.MouseEvent) => {
    e?.preventDefault();
    e?.stopPropagation();
    clearCart();
    setShowClearConfirm(false);
  };

  const toggleClearConfirm = (e: React.MouseEvent) => {
    e?.preventDefault();
    e?.stopPropagation();
    setShowClearConfirm(false);
  };

  return (
    <div className="overflow-y-auto h-full noscrollbar flex flex-col bg-background">
      <div className="grid grid-cols-3 items-center mt-6">
        {isCartEmpty ? (
          <span></span>
        ) : (
          <Trash
            className="cursor-pointer place-self-start"
            size="24"
            color="currentColor"
            onClick={() => setShowClearConfirm(true)}
          />
        )}
        <h1 className="text-sm2 place-self-center font-medium">
          {t("Heading")}
        </h1>
        <ArrowLeft
          className="cursor-pointer place-self-end"
          size="24"
          color="currentColor"
          onClick={() => router.back()}
        />
      </div>

      <div className="mt-8 flex-1 h-full">
        {showInitialCartLoad || guestAwaitingMenu ? (
          <CartSkeleton />
        ) : isCartEmpty ? (
          <div className="flex flex-col items-center justify-center gap-4 h-full">
            <Image
              src="/assets/images/cart.png"
              alt="cart"
              width={120}
              height={120}
              className="object-contain"
            />
            <div className="flex flex-col items-center gap-2 text-sm2 text-muted-foreground">
              <p>
                {t("EmptyStateTitle", {
                  defaultValue: "سبد خرید شما خالی است",
                })}
              </p>
              <p className="text-xs">
                {t("EmptyStateDescription", {
                  defaultValue: "برای افزودن غذا، به منوی رستوران برگردید.",
                })}
              </p>
            </div>
          </div>
        ) : (
          <div className="flex flex-col gap-4 pb-24">
            {!isPremium && (
              <div className="bg-container rounded-container p-4 border border-border shadow-sm">
                <div className="flex items-start gap-3 mb-4">
                  <div className="shrink-0 mt-0.5">
                    <NotificationBellIcon
                      width={24}
                      height={24}
                      className="currentColor"
                    />
                  </div>
                  <div className="flex-1">
                    <p className="text-sm font-medium text-foreground mb-1">
                      ثبت سفارش
                    </p>
                    <p className="text-xs text-muted-foreground leading-5">
                      برای ثبت سفارش، لطفاً گارسون را صدا کنید
                    </p>
                  </div>
                </div>
                <Button
                  onClick={() => setShowPagerModal(true)}
                  className="w-full dark:bg-white! dark:text-black! flex items-center justify-center gap-2"
                >
                  <NotificationBellIcon
                    width={18}
                    height={18}
                    className="text-white dark:text-black!"
                  />
                  <span>صدا کردن گارسون</span>
                </Button>
              </div>
            )}
            {cartFoods.map((food) => (
              <MenuItemRenderer key={food.id}>
                <MenuItem food={food} />
              </MenuItemRenderer>
            ))}
            <CartSummary isPremium={isPremium} hasItems={hasItems} />
          </div>
        )}
      </div>

      <div
        className={
          showClearConfirm
            ? "fixed inset-0 z-1001"
            : "pointer-events-none fixed inset-0 z-1001"
        }
      >
        <Prompt
          title="پاک کردن سبد خرید"
          description="آیا از پاک کردن تمامی آیتم‌های سبد خرید اطمینان دارید؟"
          textConfirm="بله"
          textCancel="خیر"
          onConfirm={handleClearCart}
          onCancel={toggleClearConfirm}
          visible={showClearConfirm}
          onClick={toggleClearConfirm}
        />
      </div>

      <PagerModal
        visible={showPagerModal}
        onClose={() => setShowPagerModal(false)}
      />
    </div>
  );
};

export default CartPage;