Nestjs - How to implement a ldap strategy? - ldap

Question

I have a users REST API built with Nestjs, it connects to a mongo atlas db and fetchs the users correctly, now i want to add a ldap verification, right now i have a docker container running ldap. I've followed the documentation for using passport and
paspport strategies but i haven't figured out how to implement a ldap strategy yet. How to implement the ldap strategy using guards and routing from a users module?
I have an auth folder like this
//auth.module.ts
import { Module } from '#nestjs/common';
import { PassportModule } from '#nestjs/passport';
import { UsersModule } from 'src/users/users.module';
import { AuthService } from './auth.service';
import { LdapStrategy } from './ldap.strategy';
#Module({
providers: [AuthService, LdapStrategy],
imports: [UsersModule, PassportModule],
})
export class AuthModule {}
//ldap.strategy.ts
import * as Strategy from 'passport-ldapauth';
import { Injectable, UnauthorizedException } from '#nestjs/common';
import { PassportStrategy } from '#nestjs/passport';
import { AuthService } from './auth.service';
const OPTS = {
server: {
url: 'ldap://localhost:389',
bindDN: 'cn=admin,dc=gamestack,dc=unal,dc=edu,dc=co',
bindCredentials: 'admin',
searchBase: 'ou=sa',
searchFilter: '(uid={{username}})',
},
};
#Injectable()
export class LdapStrategy extends PassportStrategy(Strategy, 'ldapauth') {
constructor(private authService: AuthService) {
super(OPTS);
}
async validate(username: string, password: string): Promise<any> {
const user = await this.authService.validateUser(username, password);
if (!user) {
throw new UnauthorizedException();
}
return user;
}
}
ldap-auth.guard.ts
import { Injectable } from '#nestjs/common';
import { AuthGuard } from '#nestjs/passport';
#Injectable()
export class LdapAuthGuard extends AuthGuard('ldapauth') {}