Multiple objects to single endpoint with asp.net - asp.net

Question

I'm building a Restful API with asp.net core. I have an endpoint that are used to authenticate users. I have two kinds of Users where one is an Admin and one is "FilmStudio". I succesfully managed to authenticte the User (Admin) but i also need to be able to authenticate the FilmStudio with username and password. Is there anyway I can do this with a single endpoint?
This is my endpoint form the UsersController:
[AllowAnonymous]
[HttpPost("Authenticate")]
public IActionResult Authenticate([FromBody] UserDto model)
{
var user = _userRepo.Authenticate(model.UserName, model.Password);
if (user !=null)
{
if (user == null)
{
return BadRequest("The username or password is incorrect.");
}
return Ok(new
{
Id = user.UserId,
Username = user.UserName,
Role = user.Role,
Token = user.Token
});
}
else
{
var filmStudioDto = new FilmStudioDto();
var studio = _studioRepo.Authenticate(model.Name, model.Password);
if (studio == null)
{
return BadRequest("The username or password is incorrect.");
}
return Ok(new
{
Id = studio.StudioId,
Username = studio.Name,
City = studio.City,
Role = studio.Role,
Token = studio.Token
});
}
}
}
When im giving the username and password for the admin user it works. However when im trying to enter the username and passwod for FilmStudio I allways get the error messsage that says: "The username or password is incorrect."

Answer 1

[AllowAnonymous]
[HttpPost("Authenticate")]
public IActionResult Authenticate([FromBody] UserDto model)
{
if (model.UserName != null) // Check if UserName is null or not
{
var user = _userRepo.Authenticate(model.UserName, model.Password);
if (user == null)
{
return BadRequest("The username or password is incorrect.");
}
return Ok(new
{
Id = user.UserId,
Username = user.UserName,
Role = user.Role,
Token = user.Token
});
}
else
{
var studio = _studioRepo.Authenticate(model.StudioName, model.StudioPassword);
if (studio == null)
{
return BadRequest("The username or password is incorrect.");
}
return Ok(new
{
Id = studio.StudioId,
Username = studio.Name,
City = studio.City,
Role = studio.Role,
Token = studio.Token
});
}
}
}

Answer 2

you can try to use instead of model.Name model.UserName for studio too
else
{
var studio = _studioRepo.Authenticate(model.UserName, model.Password);
if (studio == null)
return BadRequest("The username or password is incorrect.");
return Ok( new FilmStudioDto
{
Id = studio.StudioId,
Username = studio.Name,
City = studio.City,
Role = studio.Role,
Token = studio.Token
});
}
and IMHO you can fix user part too
if (user !=null)
return Ok(new UserDto
{
Id = user.UserId,
Username = user.UserName,
Role = user.Role,
Token = user.Token
});