All files / src/app/admin/products/[id] page.tsx

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"use client";

import { useState, useEffect } from "react";
import { useRouter, useParams } from "next/navigation";
import dynamic from "next/dynamic";
import { ProductFormSkeleton } from "@/components/ui/Skeleton";

const ProductForm = dynamic(
  () => import("@/components/features/admin/ProductForm").then((mod) => ({ default: mod.ProductForm })),
  {
    loading: () => <ProductFormSkeleton />,
    ssr: false, // Admin doesn't need SSR
  }
);

export default function EditProductPage() {
  const router = useRouter();
  const params = useParams();
  const productId = parseInt(params.id as string);

  const [product, setProduct] = useState(null);
  const [categories, setCategories] = useState([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState("");

  useEffect(() => {
    const fetchData = async () => {
      try {
        const [productRes, categoriesRes] = await Promise.all([
          fetch(`/api/admin/products/${productId}`),
          fetch("/api/admin/categories"),
        ]);

        if (!productRes.ok) throw new Error("Product not found");

        const productData = await productRes.json();
        const categoriesData = await categoriesRes.json();

        setProduct(productData.data || productData);
        if (categoriesData.success) {
          setCategories(categoriesData.data);
        }
      } catch (err) {
        setError(err instanceof Error ? err.message : 'An error occurred');
      } finally {
        setLoading(false);
      }
    };

    fetchData();
  }, [productId]);

  const handleSubmit = async (data: {
    title: string;
    description: string;
    price: string | number;
    discountedPrice: string | number;
    stock: number;
    categoryId: string | number;
    sku: string;
    images?: Array<{ id: number; url: string; thumbnailUrl: string; order: number }>;
  }) => {
    const response = await fetch(`/api/admin/products/${productId}`, {
      method: "PUT",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(data)});

    if (!response.ok) {
      const error = await response.json();
      throw new Error(error.error || "Failed to update product");
    }

    router.push("/admin/products");
  };

  if (loading) return <div style={{ padding: "20px" }}>Loading...</div>;
  if (error) return <div style={{ padding: "20px", color: "red" }}>Error: {error}</div>;

  return (
    <div style={{ padding: "30px 0" }}>
      <div style={{ maxWidth: "900px", margin: "0 auto", paddingLeft: "30px", paddingRight: "30px" }}>
        <h1 style={{ marginBottom: "30px" }}>Edit Product</h1>
        {product && (
          <ProductForm
            productId={productId}
            initialData={product}
            categories={categories}
            onSubmit={handleSubmit}
          />
        )}
      </div>
    </div>
  );
}