issue #39

- Access 토큰 만료 시 Refresh 토큰으로 Access 토큰 갱신 로직 구현 중

src/middleware/auth/guard/refresh-token.guard.ts

@@ -1,5 +1,45 @@
-import { Injectable } from "@nestjs/common";
+import { ExecutionContext, Injectable, UnauthorizedException } from "@nestjs/common";
+import { Reflector } from "@nestjs/core";
+import { TokenExpiredError } from "@nestjs/jwt";
 import { AuthGuard } from "@nestjs/passport";
+import { IS_PUBLIC_KEY } from "src/common/decorators/public.decorator";
 
 @Injectable()
-export class JwtRefreshAuthGuard extends AuthGuard('refresh-token') {}
+export class JwtRefreshAuthGuard extends AuthGuard('refresh-token') {
+  constructor(private reflector: Reflector) {
+    super();
+  }
+
+  canActivate(context: ExecutionContext) {
+    const isPublic = this.reflector.getAllAndOverride<boolean>(IS_PUBLIC_KEY, [
+      context.getHandler(),
+      context.getClass()
+    ]);
+
+    if (isPublic) {
+      return true;
+    }
+
+    return super.canActivate(context);
+  }
+
+  handleRequest(err: any, user:any, info:any) {
+    if (info instanceof TokenExpiredError) {
+      throw new UnauthorizedException({
+        statusCode: 401,
+        message: 'Refresh Token Expired',
+        code: 'RefreshTokenExpired'
+      });
+    }
+
+    if (err || !user) {
+      throw new UnauthorizedException({
+        statusCode: 401,
+        message: 'Invalid Token',
+        code: 'InvalidToken'
+      });
+    }
+
+    return user;
+  }
+}