public string EditMovie(CompleteMovieDto movie) { var checkExists = _movieAppRepository.GetMovie(movie.Id); if (checkExists == null) { return(ErrorMessages.MOVIE_DOES_NOT_EXISTS); } else { if (movie.Name != null) { if (Utils.IsStringEmpty(movie.Name)) { return(ErrorMessages.MOVIE_NAME_EMPTY); } } if (movie.YearOfRelease > 0) { if (movie.YearOfRelease < 1900 || movie.YearOfRelease > 2050) { return(ErrorMessages.MOVIE_YEAR_OF_RELEASE_SHOULD_BE_FROM_1900_2050); } } if (movie.Plot != null) { if (Utils.IsStringEmpty(movie.Plot)) { return(ErrorMessages.MOVIE_PLOT_EMPTY); } } if (movie.PosterURL != null) { if (!Utils.IsURLValid(movie.PosterURL)) { return(ErrorMessages.MOVIE_POSTER_INVALID_URL); } } if (movie.ProducerId != null) { var producer = _movieAppRepository.GetProducer(movie.ProducerId); if (producer == null) { return(ErrorMessages.PRODUCER_NOT_FOUND); } } if (movie.Actors != null && movie.Actors.Count != 0) { foreach (Guid actorId in movie.Actors) { if (_movieAppRepository.GetActor(actorId) == null) { return(ErrorMessages.ACTOR_NOT_FOUND); } } } var editMovie = _movieAppRepository.EditMovie(movie); if (editMovie != null) { return(editMovie.Id.ToString()); } else { return(ErrorMessages.SERVER_ERROR); } } }