nuxt-app/server/service/auth/context.ts

import type { H3Event } from "h3";
import { SESSION_COOKIE_NAME, UNAUTHORIZED_MESSAGE } from "#server/constants/auth";
import { getCurrentUser, type MinimalUser } from ".";
import { getSessionId } from "./cookie";
import log4js from "logger";

const logger = log4js.getLogger("AUTH");

export function createAuthContext(event: H3Event) {
  let currentUserPromise: Promise<MinimalUser | null> | undefined;

  const getCurrent = async () => {
    if (!currentUserPromise) {
      currentUserPromise = (async () => {
        const sessionId = getSessionId(event);
        if (!sessionId) {
          return null;
        }
        return getCurrentUser(sessionId);
      })();
    }
    return currentUserPromise;
  };

  const requireUser = async () => {
    const user = await getCurrent();
    if (!user) {
      logger.warn("[AUTH] 401 requireUser 拒绝: path=%s", event.path);
      throw createError({
        statusCode: 401,
        statusMessage: UNAUTHORIZED_MESSAGE,
        data: { code: "UNAUTHORIZED" },
      });
    }
    return user;
  };

  return {
    getCurrent,
    requireUser,
  };
}