import { MetaFunction } from "@remix-run/node";
import { useParams, useNavigate } from "@remix-run/react";
import { safeGoBack } from "~/utils/helpers";
import {
  useCollectionDetail,
  useSimilarCollections,
} from "~/requestHandler/use-collection-hooks";
import { Skeleton } from "~/components/ui/skeleton";
import {
  Package,
  RefreshCw,
  ArrowRight,
  ShoppingBag,
  Calendar,
  Sparkles,
} from "lucide-react";
import MondrianProductList from "~/components/MondrianProductList";
import HorizontalCollectionsList from "~/components/HorizontalCollectionsList";
import AIPromoteModal from "~/components/AIPromoteModal";
import { useState } from "react";

export default function CollectionDetail() {
  const params = useParams();
  const navigate = useNavigate();
  const collectionId = params.id || "";

  // AI Promote Modal State
  const [isPromoteModalOpen, setIsPromoteModalOpen] = useState(false);

  const {
    data: collection,
    isLoading,
    isError,
    refetch,
  } = useCollectionDetail(collectionId);

  const {
    data: similarCollectionsData,
    isLoading: isSimilarLoading,
    isError: isSimilarError,
    refetch: refetchSimilar,
  } = useSimilarCollections(collectionId);

  // Format date helper
  const formatDate = (dateString?: string) => {
    if (!dateString) return "";
    const date = new Date(dateString);
    return new Intl.DateTimeFormat("fa-IR", {
      year: "numeric",
      month: "long",
      day: "numeric",
    }).format(date);
  };

  const handleBack = () => {
    safeGoBack(navigate);
  };

  // Loading state
  if (isLoading) {
    return (
      <div className="flex flex-col min-h-screen bg-WHITE pb-20">
        {/* Header */}
        <div className="sticky top-0 z-30 bg-WHITE pt-[env(safe-area-inset-top)]">
          <div className="relative flex flex-row h-[65px] w-full items-center justify-center border-b border-inner-border">
            <ArrowRight
              onClick={handleBack}
              className="absolute top-5 right-5 cursor-pointer"
            />
            <p className="text-B16 font-bold">جزئیات کالکشن</p>
          </div>
        </div>

        {/* Loading Skeleton */}
        <div className="flex flex-col gap-4 p-4">
          <Skeleton className="w-full mx-auto h-[65vh] rounded-xl" />
          <Skeleton className="w-3/4 h-6" />
          <Skeleton className="w-full h-4" />
          <div className="flex gap-2">
            <Skeleton className="w-24 h-8" />
            <Skeleton className="w-24 h-8" />
          </div>
          <Skeleton className="w-full h-px mt-4" />
          <div className="grid grid-cols-2 gap-4 mt-4">
            {Array.from({ length: 6 }).map((_, i) => (
              <Skeleton key={i} className="w-full h-48 rounded-xl" />
            ))}
          </div>
        </div>
      </div>
    );
  }

  // Error state
  if (isError || !collection) {
    return (
      <div className="flex flex-col min-h-screen bg-WHITE pb-20">
        {/* Header */}
        <div className="sticky top-0 z-30 bg-WHITE pt-[env(safe-area-inset-top)]">
          <div className="relative flex flex-row h-[65px] w-full items-center justify-center border-b border-inner-border">
            <ArrowRight
              onClick={handleBack}
              className="absolute top-5 right-5 cursor-pointer"
            />
            <p className="text-B16 font-bold">جزئیات کالکشن</p>
          </div>
        </div>

        {/* Error State */}
        <div className="flex flex-col items-center justify-center py-20 px-4">
          <div className="w-20 h-20 rounded-full bg-red-50 flex items-center justify-center mb-4">
            <Package size={40} className="text-red-500" />
          </div>
          <h3 className="text-B18 font-bold text-black mb-2">
            خطا در بارگذاری کالکشن
          </h3>
          <p className="text-R14 text-GRAY text-center max-w-md mb-6">
            متاسفانه در بارگذاری اطلاعات کالکشن مشکلی پیش آمد.
          </p>
          <button
            onClick={() => refetch()}
            className="flex items-center gap-2 bg-black text-white px-6 py-3 rounded-full hover:bg-gray-800 transition-all"
          >
            <RefreshCw size={16} />
            <span className="text-R14 font-bold">تلاش مجدد</span>
          </button>
        </div>
      </div>
    );
  }

  const products = collection.products?.results || [];

  return (
    <div className="flex flex-col min-h-screen bg-WHITE pb-20">
      {/* Header (mobile) */}
      <div className="lg:hidden sticky top-0 z-30 bg-WHITE pt-[env(safe-area-inset-top)]">
        <div className="relative flex flex-row h-[65px] w-full items-center justify-center border-b border-inner-border">
          <ArrowRight
            onClick={handleBack}
            className="absolute top-5 right-5 cursor-pointer"
          />
          <p className="text-B16 font-bold">جزئیات کالکشن</p>
        </div>
      </div>

      {/* Content */}
      <div className="flex flex-col lg:max-w-[1320px] lg:mx-auto lg:w-full lg:px-8 lg:pt-6">
        {/* Collection Header */}
        <div className="flex flex-col gap-4 p-4 border-b border-inner-border lg:grid lg:grid-cols-[360px_1fr] lg:gap-8 lg:items-start lg:p-0 lg:py-6 lg:border-0">
          {/* Cover Image */}
          <div className="relative overflow-hidden rounded-xl w-full mx-auto h-[65vh] bg-gray-100 lg:h-auto lg:aspect-[3/4]">
            {collection.coverImageUrl ? (
              <img
                src={collection.coverImageUrl}
                alt={collection.title || "Collection"}
                className="w-full h-full object-cover"
              />
            ) : (
              <div className="w-full h-full flex items-center justify-center bg-WHITE2">
                <Package size={80} className="text-GRAY" />
              </div>
            )}
          </div>

          {/* Collection Info */}
          <div className="flex flex-col gap-3">
            <h1 className="text-B20 lg:text-[28px] font-bold text-black">
              {collection.title || "بدون عنوان"}
            </h1>

            {collection.description && (
              <p className="text-R14 text-GRAY">{collection.description}</p>
            )}

            {/* Stats Row */}
            <div className="flex items-center gap-4 flex-wrap justify-between">
              {/* Product Count */}
              {collection.productCount !== undefined && (
                <div className="flex items-center gap-1.5 bg-WHITE2 px-3 py-2 rounded-lg">
                  <ShoppingBag size={16} className="text-black" />
                  <span className="text-R13 text-black font-bold">
                    {collection.productCount} محصول
                  </span>
                </div>
              )}

              {/* Created Date */}
              {collection.createdAt && (
                <div className="flex items-center gap-1.5">
                  <Calendar size={14} className="text-GRAY" />
                  <span className="text-R10 text-GRAY">
                    {formatDate(collection.createdAt)}
                  </span>
                </div>
              )}
            </div>
          </div>
        </div>

        {/* Products Section */}
        <div className="flex flex-col py-4">
          <div className="px-4 mb-4">
            <h2 className="text-B18 font-bold text-black">محصولات کالکشن</h2>
          </div>

          {products.length === 0 ? (
            <div className="flex flex-col items-center justify-center py-20 px-4">
              <div className="w-20 h-20 rounded-full bg-WHITE2 flex items-center justify-center mb-4">
                <Package size={40} className="text-GRAY" />
              </div>
              <h3 className="text-B18 font-bold text-black mb-2">
                محصولی در این کالکشن وجود ندارد
              </h3>
              <p className="text-R14 text-GRAY text-center max-w-md">
                هنوز محصولی به این کالکشن اضافه نشده است.
              </p>
            </div>
          ) : (
            <MondrianProductList
              products={products.map((product) => ({
                id: product.id || "",
                title: product.title,
                images: product.imageUrls || [],
                basePrice: product.basePrice
                  ? parseInt(product.basePrice)
                  : undefined,
              }))}
              fetchNextPage={() => {}}
              hasNextPage={false}
              isFetchingNextPage={false}
              isLoading={false}
              isError={false}
              refetch={refetch}
              emptyState={{
                image: <Package size={80} className="text-GRAY" />,
                title: "محصولی وجود ندارد",
                description: "هنوز محصولی به این کالکشن اضافه نشده است.",
              }}
            />
          )}
        </div>

        {/* Similar Collections Section */}
        {similarCollectionsData &&
          similarCollectionsData?.results &&
          similarCollectionsData?.results.length > 0 && (
            <div className="flex flex-col py-4 border-t border-inner-border">
              <div className="px-4 mb-4">
                <h2 className="text-B18 font-bold text-black">
                  کالکشن‌های مرتبط
                </h2>
              </div>

              <HorizontalCollectionsList
                collections={similarCollectionsData?.results || []}
                isLoading={isSimilarLoading}
                isError={isSimilarError}
                refetch={refetchSimilar}
              />
            </div>
          )}
      </div>

      {/* AI Promote Floating Button - با انیمیشن ورود از پایین */}
      <button
        onClick={() => setIsPromoteModalOpen(true)}
        className="fixed bottom-24 left-1/2 -translate-x-1/2 z-40
                   flex items-center gap-2 px-6 py-4 rounded-full
                   bg-BLACK text-WHITE font-bold shadow-2xl
                   hover:bg-BLACK2 hover:scale-105
                   active:scale-95
                   transition-all duration-300"
        style={{
          animation:
            "slideUpBounce 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards",
        }}
      >
        <Sparkles className="w-5 h-5" />
        <span className="text-R14 font-bold">پرو کردن با AI</span>
      </button>

      {/* AI Promote Modal */}
      <AIPromoteModal
        isOpen={isPromoteModalOpen}
        onClose={() => setIsPromoteModalOpen(false)}
        collectionId={collectionId}
      />

      {/* Keyframe Animation for Floating Button */}
      <style>{`
        @keyframes slideUpBounce {
          0% {
            transform: translateX(-50%) translateY(100px);
            opacity: 0;
          }
          60% {
            transform: translateX(-50%) translateY(-10px);
            opacity: 1;
          }
          80% {
            transform: translateX(-50%) translateY(5px);
          }
          100% {
            transform: translateX(-50%) translateY(0);
            opacity: 1;
          }
        }
      `}</style>
    </div>
  );
}

export const meta: MetaFunction = () => {
  return [
    { title: "جزئیات کالکشن - ویترون" },
    {
      name: "description",
      content: "مشاهده جزئیات کالکشن و محصولات موجود در آن.",
    },
    {
      name: "keywords",
      content: "کالکشن، محصولات، ویترون، خرید آنلاین",
    },
    { name: "robots", content: "index, follow" },
    { property: "og:type", content: "website" },
    { property: "og:title", content: "جزئیات کالکشن - ویترون" },
    {
      property: "og:description",
      content: "مشاهده جزئیات کالکشن و محصولات موجود در آن.",
    },
    { property: "og:site_name", content: "ویترون" },
    { property: "og:locale", content: "fa_IR" },
    { name: "twitter:card", content: "summary_large_image" },
    { name: "twitter:title", content: "جزئیات کالکشن - ویترون" },
    {
      name: "twitter:description",
      content: "مشاهده جزئیات کالکشن و محصولات موجود در آن.",
    },
  ];
};
