refactor: implement koaUser middleware

* refactor: extract code block of getting detailed user info in koaAuth as middleware koaUser

* refactor: fix according to comments

* refactor: fix methods' and properties' naming

packages/core/src/middleware/koa-auth.ts

@@ -1,20 +1,17 @@
 import { IncomingHttpHeaders } from 'http';
 
-import { UserInfo, userInfoSelectFields } from '@logto/schemas';
 import { jwtVerify } from 'jose/jwt/verify';
 import { MiddlewareType, Request } from 'koa';
 import { IRouterParamContext } from 'koa-router';
-import pick from 'lodash.pick';
 
 import { developmentUserId, isProduction } from '@/env/consts';
 import RequestError from '@/errors/RequestError';
 import { publicKey, issuer, adminResource } from '@/oidc/consts';
-import { findUserById } from '@/queries/user';
 import assertThat from '@/utils/assert-that';
 
 export type WithAuthContext<ContextT extends IRouterParamContext = IRouterParamContext> =
   ContextT & {
-    user: UserInfo;
+    auth: string;
   };
 
 const bearerTokenIdentifier = 'Bearer';
@@ -57,8 +54,7 @@ export default function koaAuth<
   return async (ctx, next) => {
     try {
       const userId = await getUserIdFromRequest(ctx.request);
-      const user = await findUserById(userId);
-      ctx.user = pick(user, ...userInfoSelectFields);
+      ctx.auth = userId;
     } catch {
       throw new RequestError({ code: 'auth.unauthorized', status: 401 });
     }

packages/core/src/middleware/koa-user-info.ts

@@ -0,0 +1,29 @@
+import { UserInfo, userInfoSelectFields } from '@logto/schemas';
+import { MiddlewareType } from 'koa';
+import pick from 'lodash.pick';
+
+import RequestError from '@/errors/RequestError';
+import { WithAuthContext } from '@/middleware/koa-auth';
+import { findUserById } from '@/queries/user';
+
+export type WithUserInfoContext<ContextT extends WithAuthContext = WithAuthContext> = ContextT & {
+  userInfo: UserInfo;
+};
+
+export default function koaUserInfo<
+  StateT,
+  ContextT extends WithAuthContext,
+  ResponseBodyT
+>(): MiddlewareType<StateT, WithUserInfoContext<ContextT>, ResponseBodyT> {
+  return async (ctx, next) => {
+    try {
+      const { auth: userId } = ctx;
+      const userInfo = await findUserById(userId);
+      ctx.userInfo = pick(userInfo, ...userInfoSelectFields);
+    } catch {
+      throw new RequestError({ code: 'auth.unauthorized', status: 401 });
+    }
+
+    return next();
+  };
+}

packages/core/src/routes/types.ts

@@ -2,6 +2,7 @@ import Router from 'koa-router';
 
 import { WithAuthContext } from '@/middleware/koa-auth';
 import { WithI18nContext } from '@/middleware/koa-i18next';
+import { WithUserInfoContext } from '@/middleware/koa-user-info';
 
 export type AnonymousRouter = Router<unknown, WithI18nContext>;
-export type AuthedRouter = Router<unknown, WithAuthContext<WithI18nContext>>;
+export type AuthedRouter = Router<unknown, WithUserInfoContext<WithAuthContext<WithI18nContext>>>;