public async Task <IActionResult> AddToMovieAsync(string movieId, [FromBody] List <string> castMemberIds)
{
if (!await repository.CheckAllExists(castMemberIds))
{
return(BadRequest("Not All Cast members Exists"));
}
var result = await movieRepository.AddCastMembersAsync(movieId, castMemberIds);
return(result.Ok ? (IActionResult)Ok(result) : BadRequest(result.Message));
}