// server/api/cache/clear.post.ts - 清空当前用户 DB 缓存接口
import { setResponseStatus } from "h3";

import { prisma } from "~~/server/utils/db";
import { createApiLogger } from "~~/server/utils/logging";
import { apiErr, apiOk } from "~~/server/utils/response";

/**
 * 清缓存：将当前用户的 cacheClearedAt 更新为当前时间
 *
 * 之后查 DB 缓存时只命中该时间之后写入的记录，历史记录全部保留。
 * 必须携带有效 session cookie（由 api-auth middleware 统一鉴权）
 */
export default defineEventHandler(async (event) => {
  const logger = createApiLogger(event, "api.cache.clear");
  const userId = event.context.auth!.user.id;

  try {
    await prisma.user.update({
      where: { id: userId },
      data: { cacheClearedAt: new Date() }
    });

    logger.info("finish_success");
    return apiOk(null);
  } catch (err) {
    logger.error("db_error", { userId, err: String(err) });
    setResponseStatus(event, 500);
    return apiErr(500, "服务器内部错误");
  }
});