import { Link, useNavigate } from "@remix-run/react";
import { MetaFunction } from "@remix-run/node";
import { ArrowLeft, Trash2 } from "lucide-react";
import { useToast } from "../hooks/use-toast";
import { useGetAllCarts, useClearCart } from "../requestHandler/use-cart-hooks";
import { formatPrice } from "../utils/helpers";
import { ProductImageCarousel } from "~/components/product";
import { CartDetail, CartItem } from "src/api/types";
import ProfilePagesHeader from "../components/ProfilePagesHeader";
import UiProvider from "~/components/UiProvider";
import SellerLogo from "~/components/SellerLogo";
import { Dialog, DialogContent, DialogOverlay } from "~/components/ui/dialog";
import { Button } from "~/components/ui/button";
import { useState } from "react";
export default function CartIndex() {
  const { data: carts = [], isLoading, refetch, isError } = useGetAllCarts();
  const clearCartMutation = useClearCart();
  const { toast } = useToast();
  const navigate = useNavigate();
  const [confirmDialogOpen, setConfirmDialogOpen] = useState(false);
  const [cartToDelete, setCartToDelete] = useState<string | null>(null);
  const calculateCartTotal = (cart: CartDetail) => {
    if (!cart.items || cart.items.length === 0) return "0";

    const total = cart.items.reduce((sum: number, item: CartItem) => {
      const price = parseInt(item.priceAtPurchase) * item.quantity;
      return sum + price;
    }, 0);
    return total.toString();
  };

  // Handle clearing a cart
  const handleClearCart = async () => {
    if (!cartToDelete) return;

    try {
      await clearCartMutation.mutateAsync(cartToDelete);

      toast({
        title: "سبد خرید",
        description: "سبد خرید با موفقیت خالی شد",
        variant: "default",
      });
      setConfirmDialogOpen(false);
      setCartToDelete(null);
    } catch (error) {
      console.error("Error clearing cart:", error);
      toast({
        title: "خطا",
        description: "خالی کردن سبد خرید با مشکل مواجه شد",
        variant: "destructive",
      });
    }
  };

  const openConfirmDialog = (cartId: string) => {
    setCartToDelete(cartId);
    setConfirmDialogOpen(true);
  };
  return (
    <div className="bg-background">
      {/* Header (mobile) */}
      <div className="lg:hidden">
        <ProfilePagesHeader hideBackButton={true} title="لیست سبد خرید" />
      </div>

      {/* Cart Content */}
      <div className="flex flex-col gap-4 p-4 lg:max-w-[1320px] lg:mx-auto lg:w-full lg:px-8 lg:py-8">
        <h1 className="hidden lg:block text-[28px] font-extrabold mb-2">
          سبد خرید
        </h1>
        <UiProvider
          isLoading={isLoading}
          isError={isError}
          isEmpty={carts.length === 0}
          onRetry={() => {
            refetch();
          }}
          type="cart"
        >
          <div className="space-y-4 w-full lg:space-y-0 lg:grid lg:grid-cols-2 lg:gap-5">
            {carts.map((cart) => {
              return (
                <div
                  role="button"
                  tabIndex={0}
                  onKeyDown={() => {}}
                  onClick={() => {
                    navigate(`/cart/${cart.id}`);
                  }}
                  key={cart.id}
                  className="bg-WHITE overflow-hidden shadow-md rounded-[15px] border flex gap-2"
                >
                  <div className="w-2/5">
                    <ProductImageCarousel
                      images={
                        cart.items?.map(
                          (item) => item.productVariant?.productImage || ""
                        ) || []
                      }
                      hideIndex={true}
                    />
                  </div>
                  <div className="w-3/5 flex p-4 justify-between gap-2">
                    <div className="w-full flex justify-between flex-col gap-3">
                      <a
                        href={`/seller/${cart.seller?.username}`}
                        className="w-full gap-2 flex items-center"
                      >
                        <SellerLogo
                          size="sm"
                          src={cart.seller?.logo}
                          alt={"seller-image"}
                        />

                        <p className="text-B12 font-bold">
                          {cart.seller?.name}
                        </p>
                        <span className="ms-auto shrink-0 text-R10 font-semibold text-green-600">
                          ارسال جداگانه
                        </span>
                      </a>
                      <p className="text-B12 font-bold line-clamp-1">
                        {cart.items
                          ?.map(
                            (item) => item.productVariant?.productTitle || ""
                          )
                          .join(", ")}
                      </p>
                      <div className="w-full gap-1 flex">
                        <p className="text-B12 font-bold">مبلغ فاکتور:</p>
                        <p className="text-R12">
                          {formatPrice(calculateCartTotal(cart))} تومان
                        </p>
                      </div>
                    </div>
                    <div className="flex justify-between flex-col gap-3">
                      <Trash2
                        className={`h-6 w-6 ${
                          clearCartMutation.isPending ? "text-GRAY" : "text-RED"
                        }`}
                        onClick={(e) => {
                          e.stopPropagation();
                          if (!clearCartMutation.isPending) {
                            openConfirmDialog(cart.id || "");
                          }
                        }}
                      />
                      <Link to={`/cart/${cart.id}`}>
                        <ArrowLeft className="h-6 w-6" />
                      </Link>
                    </div>
                  </div>
                </div>
              );
            })}
          </div>
        </UiProvider>
      </div>

      <Dialog open={confirmDialogOpen} onOpenChange={setConfirmDialogOpen}>
        <DialogOverlay />
        <DialogContent className="p-4 bg-WHITE rounded-[15px] w-[calc(100%-40px)]">
          <div className="flex flex-col gap-10">
            <div className={"gap-3 items-center w-full"}>
              <p className="text-B12 font-bold mt-1">تایید حذف سبد خرید</p>
              <p className="text-R12">
                آیا مطمئن هستید که می‌خواهید این سبد خرید را خالی کنید؟ این عمل
                قابل بازگشت نیست.
              </p>
            </div>
            <div className="flex flex-row gap-6 w-full">
              <Button
                className="w-[100%]"
                size={"sm"}
                variant="dark"
                onClick={() => setConfirmDialogOpen(false)}
                disabled={clearCartMutation.isPending}
              >
                انصراف
              </Button>
              <Button
                onClick={handleClearCart}
                disabled={clearCartMutation.isPending}
                className="w-[100%]"
                size={"sm"}
                variant="primary"
              >
                {clearCartMutation.isPending ? "در حال حذف..." : "حذف سبد"}
              </Button>
            </div>
          </div>
        </DialogContent>
      </Dialog>
    </div>
  );
}

export const meta: MetaFunction = () => {
  const title = "سبد خرید | ویترون";
  const description =
    "مشاهده و مدیریت سبد خرید شما در ویترون. بررسی محصولات، تغییر تعداد و نهایی کردن خرید.";
  const imageUrl =
    "https://vitrownstatics.s3.ir-thr-at1.arvanstorage.ir/SVG-06.svg?versionId=";

  return [
    { title },
    { name: "description", content: description },
    { name: "keywords", content: "سبد خرید، خرید آنلاین، پرداخت، ویترون" },
    { name: "robots", content: "noindex, follow" },

    // Open Graph
    { property: "og:type", content: "website" },
    { property: "og:title", content: title },
    { property: "og:description", content: description },
    { property: "og:image", content: imageUrl },
    { property: "og:site_name", content: "ویترون" },
    { property: "og:locale", content: "fa_IR" },

    // Twitter Card
    { name: "twitter:card", content: "summary" },
    { name: "twitter:title", content: title },
    { name: "twitter:description", content: description },
  ];
};