// server/api/stats.get.ts - 服务运行统计接口
import { setResponseStatus } from "h3";

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

/**
 * 运行统计接口
 *
 * 返回进程 uptime、模型名以及当前用户的问答记录总数
 * 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.stats");
  const userId = event.context.auth!.user.id;

  try {
    const [runtimeStats, qa_records_count] = await Promise.all([
      Promise.resolve(getRuntimeStats()),
      prisma.qaRecord.count({ where: { userId } })
    ]);

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