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import { ExecutionContext, Inject, Injectable } from '@nestjs/common';
import { StaffAuthService } from './staff-auth.service';
import { of } from 'rxjs';
import { AuthGuard } from '@nestjs/passport';

@Injectable()
export class StaffJwtAuthGuard extends AuthGuard('jwt') {
  constructor(private authService: StaffAuthService) {
    super(authService);
    this.authService = authService;
    console.log(
      '🚀 ~ file: staff-auth.guard.ts:11 ~ StaffJwtAuthGuard ~ constructor ~ authService',
      authService,
      ', this.authService: ',
      this.authService,
    );
  }
  canActivate(context: ExecutionContext) {
    if (context.getType() != 'http') {
      return false;
    }
    const authHeader = context.switchToHttp().getRequest()
      .headers.authorization;
    if (!authHeader) {
      return false;
    }
    const authHeaderParts = authHeader.split(' ');
    if (authHeaderParts.length != 2) {
      return false;
    }
    const [, jwt] = authHeaderParts;

    this.authService
      .verifyJwt(jwt)
      .then((res) => {
        const exp = res.exp;
        if (!exp) return of(false);
        const TOKEN_EXP_MS = exp * 1000;
        const isJwtValid = Date.now() < TOKEN_EXP_MS;
        // return of(isJwtValid);
        return isJwtValid;
      })
      .catch((err) => {
        console.log(
          '🚀 ~ file: staff-auth.guard.ts:35 ~ StaffJwtAuthGuard ~ canActivate ~ err',
          err,
        );
        // return of(false);
        return false;
      });
    return super.canActivate(context);
  }
}

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 this.authService
      .verifyJwt(jwt)

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It's difficult to determine what could be causing this.authService to be undefined without seeing the entire code. However, here are a few common issues that could be causing the problem:

    The AuthService has not been imported correctly: Make sure that you have imported the AuthService using the correct import statement and path.

    The AuthService has not been added to the providers array in the module: If the AuthService is not part of the module's providers array, it won't be available for injection.

    The AuthService has not been injected into the constructor of the StaffJwtAuthGuard: If you are not injecting the AuthService into the constructor of the StaffJwtAuthGuard, then it won't be available as a property on the class.

Here's an example of how to correctly inject the AuthService into the StaffJwtAuthGuard:

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 providers: [
    {
      provide: APP_GUARD,
      useClass: StaffJwtAuthGuard,
    },
  ],