import {
  CanActivate,
  ExecutionContext,
  Injectable,
} from "@nestjs/common";
import {
  UserAuthErrorCode,
  throwUserAuthError,
} from "src/auth/auth-services/user-auth-error";
import { UserAuthService } from "src/auth/auth-services/user.auth.service";

@Injectable()
export class LocalUserAuthGuard implements CanActivate {
  constructor(private readonly userAuthService: UserAuthService) {}

  async canActivate(context: ExecutionContext): Promise<boolean> {
    const request = context.switchToHttp().getRequest();
    const { username, password, linkToken, linkContext } = request.body ?? {};
    const isValidUser = await this.userAuthService.validateUser(
      username,
      password,
      { linkToken, linkContext },
    );
    if (!isValidUser) {
      throwUserAuthError(UserAuthErrorCode.OTP_INVALID);
    }
    request.user = isValidUser;
    return true;
  }
}