import { delCache } from "#server/utils/context";
import { z } from "zod";
import { validate } from "#server/utils/validation";
import { updateCategory, getCategoryById } from "../../service/category";

const updateSchema = z.object({
  name: z.string().min(1, "名称不能为空").max(100, "名称不能超过 100 字").optional(),
  slug: z
    .string()
    .min(1, "标识不能为空")
    .max(100)
    .regex(/^[a-z0-9]+(?:-[a-z0-9]+)*$/, "标识只能包含小写字母、数字和连字符")
    .optional(),
  image: z.string().max(500, "图片地址不能超过 500 字").nullable().optional(),
  parentId: z.string().nullable().optional(),
  sortOrder: z.number().int().optional(),
});

export default defineWrappedResponseHandler(async (event) => {
  const id = getRouterParam(event, "id");
  if (!id) return R.throwError(400, "缺少分类 ID", null);

  const body = await readBody(event);
  const data = validate(updateSchema, body);

  const existing = await getCategoryById(id);
  if (!existing) return R.throwError(404, "分类不存在", null);

  const updated = await updateCategory(id, data);
  await delCache(`category:${id}`);
  await delCache("categories:tree");

  return R.success(updated);
});