feat: /refresh route complete along with refresh token rotation

packages/hoppscotch-backend/src/auth/strategies/rt-jwt.strategy.ts

@@ -0,0 +1,45 @@
+import { ExtractJwt, Strategy } from 'passport-jwt';
+import { PassportStrategy } from '@nestjs/passport';
+import {
+  Injectable,
+  ForbiddenException,
+  UnauthorizedException,
+} from '@nestjs/common';
+import { UserService } from 'src/user/user.service';
+import { Request } from 'express';
+import { RefreshTokenPayload } from 'src/types/AuthTokens';
+import {
+  COOKIES_NOT_FOUND,
+  INVALID_REFRESH_TOKEN,
+  USER_NOT_FOUND,
+} from 'src/errors';
+import * as O from 'fp-ts/Option';
+
+@Injectable()
+export class RTJwtStrategy extends PassportStrategy(Strategy, 'jwt-refresh') {
+  constructor(private usersService: UserService) {
+    super({
+      jwtFromRequest: ExtractJwt.fromExtractors([
+        (request: Request) => {
+          const RTCookie = request.cookies['refresh_token'];
+          if (!RTCookie) {
+            throw new ForbiddenException(COOKIES_NOT_FOUND);
+          }
+          return RTCookie;
+        },
+      ]),
+      secretOrKey: process.env.JWT_SECRET,
+    });
+  }
+
+  async validate(payload: RefreshTokenPayload) {
+    if (!payload) throw new ForbiddenException(INVALID_REFRESH_TOKEN);
+
+    const user = await this.usersService.findUserById(payload.sub);
+    if (O.isNone(user)) {
+      throw new UnauthorizedException(USER_NOT_FOUND);
+    }
+
+    return user.value;
+  }
+}