import { NextRequest, NextResponse } from "next/server";
import {
  PRODUCT_PLANNING_ADVANCED_DISABLED,
  PRODUCT_PLANNING_ADVANCED_DISABLED_MESSAGE,
} from "@/lib/product-planning/advanced-disabled";
import { getResolvedProductPlanningApiConfig } from "@/lib/product-planning/server-config";
import {
  isProductPlanningEnabled,
  PRODUCT_PLANNING_DISABLED_MESSAGE,
} from "@/lib/product-planning/server-feature";
import { getProductPlanningToken } from "@/lib/product-planning/server-auth";
import { fetchProductPlanningJdItem } from "@/lib/product-planning/marketplace-items";
import type { ProductPlanningTaobaoItemResponse } from "@/lib/product-planning/types";

export const runtime = "nodejs";

function jsonError(status: number, error: string) {
  const payload: ProductPlanningTaobaoItemResponse = {
    success: false,
    error,
  };
  return NextResponse.json(payload, { status });
}

export async function GET(request: NextRequest) {
  if (PRODUCT_PLANNING_ADVANCED_DISABLED) {
    return jsonError(503, PRODUCT_PLANNING_ADVANCED_DISABLED_MESSAGE);
  }

  const token = await getProductPlanningToken(request);
  if (!token?.sub) {
    return jsonError(401, "未登录");
  }
  if (!(await isProductPlanningEnabled())) {
    return jsonError(403, PRODUCT_PLANNING_DISABLED_MESSAGE);
  }

  const itemId = String(request.nextUrl.searchParams.get("id") || "").trim();
  if (!itemId) {
    return jsonError(400, "缺少商品ID参数");
  }

  const config = await getResolvedProductPlanningApiConfig();
  try {
    const item = await fetchProductPlanningJdItem(itemId, config);
    return NextResponse.json({
      success: true,
      item,
    } satisfies ProductPlanningTaobaoItemResponse);
  } catch (error) {
    console.error("[ProductPlanning][JdItem] request failed:", error);
    return jsonError(502, error instanceof Error ? error.message : "京东商品详情接口调用失败");
  }
}