added decorator + guard

src/common/decorators/public.decorator.ts

@@ -0,0 +1,4 @@
+import { SetMetadata } from "@nestjs/common";
+
+export const IS_PUBLIC_KEY = 'isPublic';
+export const Public = () => SetMetadata(IS_PUBLIC_KEY, true);

src/common/guards/auth.guard.ts

@@ -1,13 +1,23 @@
 import { CanActivate, ExecutionContext, Injectable, UnauthorizedException } from "@nestjs/common";
+import { Reflector } from "@nestjs/core";
 import { JwtService } from "@nestjs/jwt";
 import { Request } from 'express';
-
+import { IS_PUBLIC_KEY } from "../decorators/public.decorator";
 
 @Injectable()
 export class AuthGuard implements CanActivate {
-    constructor(private readonly jwtService: JwtService) {}
+    constructor(
+        private readonly jwtService: JwtService,
+        private readonly reflector: Reflector,
+    ) {}
 
     async canActivate(context: ExecutionContext): Promise<boolean> {
+        const isPublic = this.reflector.getAllAndOverride<boolean>(IS_PUBLIC_KEY, [
+            context.getHandler(),
+            context.getClass(),
+        ]);
+        if (isPublic) return true;
+
         const request = context.switchToHttp().getRequest<Request>();
         const authHeader = request.headers['authorization'] as string | undefined;