import type { MetaFunction } from "@remix-run/node";
import { useState } from "react";
import { Link } from "@remix-run/react";
import { Loader2, Eye, EyeOff } from "lucide-react";
import {
  useAdminProducts,
  useAdminProductUpdate,
} from "~/requestHandler/use-admin-hooks";
import type { AdminProductRow } from "~/requestHandler/use-admin-hooks";
import {
  AdminTable,
  AdminPagination,
  AdminToolbar,
  AdminSearch,
  AdminSelect,
  AdminPageTitle,
  StatusBadge,
  faToman,
  faDate,
  useDebouncedValue,
  type Column,
} from "~/components/admin/DataTable";

export const meta: MetaFunction = () => [
  { title: "محصولات | پنل مدیریت" },
  { name: "robots", content: "noindex, nofollow" },
];

const PAGE_SIZE = 25;

export default function AdminProducts() {
  const [page, setPage] = useState(1);
  const [search, setSearch] = useState("");
  const [active, setActive] = useState("");
  const debouncedSearch = useDebouncedValue(search);
  const update = useAdminProductUpdate();

  const { data, isLoading } = useAdminProducts({
    page,
    page_size: PAGE_SIZE,
    search: debouncedSearch,
    is_active: active,
  });

  const reset = (fn: () => void) => {
    fn();
    setPage(1);
  };

  const pendingId = update.isPending ? update.variables?.id : null;
  const actBtn =
    "inline-flex items-center gap-1 px-2 py-1 rounded-lg text-[12px] font-semibold transition-colors disabled:opacity-40 cursor-pointer";

  const columns: Column<AdminProductRow>[] = [
    {
      header: "محصول",
      render: (p) => (
        <Link
          to={`/product/${p.id}`}
          className="flex items-center gap-2 min-w-[180px] hover:opacity-80"
        >
          <div className="h-10 w-10 rounded-lg bg-WHITE3 overflow-hidden shrink-0">
            {p.primaryImage && (
              <img src={p.primaryImage} alt="" className="h-full w-full object-cover" />
            )}
          </div>
          <p className="font-semibold truncate max-w-[220px]">{p.title}</p>
        </Link>
      ),
    },
    {
      header: "فروشگاه",
      render: (p) => <span>{p.sellerName || p.sellerUsername || "—"}</span>,
    },
    {
      header: "دسته",
      render: (p) => <span className="text-GRAY">{p.categoryName || "—"}</span>,
    },
    {
      header: "قیمت",
      render: (p) => <span className="tabular-nums whitespace-nowrap">{faToman(p.basePrice)}</span>,
    },
    {
      header: "وضعیت",
      render: (p) =>
        p.isActive ? (
          <StatusBadge label="فعال" tone="green" />
        ) : (
          <StatusBadge label="غیرفعال" tone="gray" />
        ),
    },
    {
      header: "تاریخ",
      render: (p) => <span className="text-GRAY whitespace-nowrap">{faDate(p.createdAt)}</span>,
    },
    {
      header: "عملیات",
      className: "text-left",
      render: (p) => {
        const busy = pendingId === p.id;
        if (busy)
          return <Loader2 size={16} className="animate-spin text-GRAY inline" />;
        return (
          <div className="flex justify-end">
            {p.isActive ? (
              <button
                className={`${actBtn} bg-WHITE2 text-BLACK2 hover:bg-WHITE3`}
                onClick={() => update.mutate({ id: p.id, data: { isActive: false } })}
              >
                <EyeOff size={13} /> غیرفعال
              </button>
            ) : (
              <button
                className={`${actBtn} bg-GREEN/10 text-GREEN hover:bg-GREEN/20`}
                onClick={() => update.mutate({ id: p.id, data: { isActive: true } })}
              >
                <Eye size={13} /> فعال
              </button>
            )}
          </div>
        );
      },
    },
  ];

  return (
    <div>
      <AdminPageTitle>محصولات</AdminPageTitle>
      <AdminToolbar>
        <AdminSearch
          value={search}
          onChange={(v) => reset(() => setSearch(v))}
          placeholder="جستجوی عنوان یا فروشگاه…"
        />
        <AdminSelect
          value={active}
          onChange={(v) => reset(() => setActive(v))}
          options={[
            { value: "", label: "همه" },
            { value: "true", label: "فعال" },
            { value: "false", label: "غیرفعال" },
          ]}
        />
      </AdminToolbar>

      <AdminTable
        columns={columns}
        rows={data?.results || []}
        isLoading={isLoading}
        getRowKey={(p) => p.id}
      />
      <AdminPagination
        page={page}
        pageSize={PAGE_SIZE}
        count={data?.count || 0}
        onPageChange={setPage}
      />
    </div>
  );
}