public async Task <IActionResult> UpdateMovieAsync(
[FromRoute, SwaggerParameter(Description = "Id of movie to update", Required = true)] Guid movieId,
[FromBody, SwaggerParameter(Description = "Movie to update", Required = true)] MovieToUpdateDto movieToUpdate,
[FromHeader(Name = "Accept"), SwaggerParameter(Description = "media type to request betwen json or json+hateoas")] string mediaType)
{
var movieFromDb = await _movieRepository.GetMovieAsync(movieId);
// upserting if movie does not already exist
if (movieFromDb == null)
{
var movieEntity = Mapper.Map <Movie>(movieToUpdate);
movieEntity.Id = movieId;
_movieRepository.AddMovie(movieEntity);
if (!await _movieRepository.SaveChangesAsync())
{
_logger.LogError($"Upserting movie: {movieId} failed on save");
}
// if any genre is added to movie, create many-to-many relationship for each genre
if (movieToUpdate.GenreIds.Count > 0)
{
for (int i = 0; i < movieToUpdate.GenreIds.Count; i++)
{
// create moviegenre object with genre id and movie id from movieToCreate object
MovieGenre movieGenreToAdd = new MovieGenre {
MovieId = movieId, GenreId = movieToUpdate.GenreIds[i]
};
movieGenreToAdd.Id = Guid.NewGuid();
_movieGenreRepository.AddMovieGenre(movieGenreToAdd);
}
// save changes to database after all many-to-many relationships has been created if any exist
if (!await _movieGenreRepository.SaveChangesAsync())
{
_logger.LogError("Saving changes to database while deleting a moviegenre failed");
}
}
var movieToReturn = Mapper.Map <MovieDto>(movieEntity);
if (mediaType == "application/vnd.biob.json+hateoas")
{
var links = CreateLinksForMovies(movieToReturn.Id, null);
var linkedMovie = movieToReturn.ShapeData(null) as IDictionary <string, object>;
linkedMovie.Add("links", links);
return(CreatedAtRoute("GetMovie", new { movieId = movieToReturn.Id }, linkedMovie));
}
else
{
return(CreatedAtRoute("GetMovie", new { movieId = movieToReturn.Id }, movieToReturn));
}
}
Mapper.Map(movieToUpdate, movieFromDb);
_movieRepository.UpdateMovie(movieFromDb);
if (!await _movieRepository.SaveChangesAsync())
{
_logger.LogError($"Updating movie: {movieId} failed on save");
}
// easy solution delete all moviegenres with id, add new ids
var moviegenresExist = await _movieGenreRepository.GetAllMovieGenresByMovieIdAsync(movieId);
// delete all existing many-to-many genre relationships for movie
foreach (var moviegenre in moviegenresExist)
{
_movieGenreRepository.DeleteMovieGenre(moviegenre);
}
// if any genre is added to movie, create many-to-many relationship for each genre
if (movieToUpdate.GenreIds.Count > 0)
{
for (int i = 0; i < movieToUpdate.GenreIds.Count; i++)
{
// create moviegenre object with genre id and movie id from movieToCreate object
MovieGenre movieGenreToAdd = new MovieGenre {
MovieId = movieId, GenreId = movieToUpdate.GenreIds[i]
};
movieGenreToAdd.Id = Guid.NewGuid();
_movieGenreRepository.AddMovieGenre(movieGenreToAdd);
}
}
// save changes to database after all many-to-many relationships has been deleted and recreated if any exist
if (!await _movieGenreRepository.SaveChangesAsync())
{
_logger.LogError("Saving changes to database while deleting a moviegenre failed");
}
return(NoContent());
}