public async Task <IActionResult> PartiuallyUpdateMovieAsync(
[FromRoute, SwaggerParameter(Description = "Id of movie to update", Required = true)] Guid movieId,
[FromBody, SwaggerParameter(Description = "Jsonpatch operation document to update", Required = true)] JsonPatchDocument <MovieToUpdateDto> patchDoc,
[FromHeader(Name = "Accept"), SwaggerParameter(Description = "media type to request betwen json or json+hateoas")] string mediaType)
{
if (patchDoc == null)
{
return(BadRequest());
}
var movieFromDb = await _movieRepository.GetMovieAsync(movieId);
// upserting if movie does not already exist
// TODO: research if upserting is neccesary in patching
if (movieFromDb == null)
{
var movieToCreate = new MovieToUpdateDto();
patchDoc.ApplyTo(movieToCreate, ModelState);
if (!ModelState.IsValid)
{
new ProccessingEntityObjectResultErrors(ModelState);
}
var movieToAddToDb = Mapper.Map <Movie>(movieToCreate);
movieToAddToDb.Id = movieId;
_movieRepository.AddMovie(movieToAddToDb);
if (!await _movieRepository.SaveChangesAsync())
{
_logger.LogError($"Upserting movie: {movieId} failed on save");
}
// loop on foreach Operations => if op.path == "GenreIds" => loop on value which contains list/array? of genreIds
foreach (var op in patchDoc.Operations)
{
if (op.path.ToLower() == "genreids")
{
//movieToPatch.GenreIds = (List<Guid>)op.value;
var genreIds = op.value.ToString();
// TODO make list guid instead of string so you dont have to parse on each use. What if only one, still split?
// TODO EXTENDED check if lenght is > 0 before all this, also check if valid Guids
var splitGenreIds = genreIds.Split(",");
switch (op.op)
{
// check if genre already exists on movie before creating
case "add":
{
for (int i = 0; i < splitGenreIds.Length; i++)
{
//create moviegenre object with genre id and movie id from movieToCreate object
MovieGenre movieGenreToAdd = new MovieGenre {
MovieId = movieId, GenreId = Guid.Parse(splitGenreIds[i])
};
movieGenreToAdd.Id = Guid.NewGuid();
_movieGenreRepository.AddMovieGenre(movieGenreToAdd);
}
break;
}
case "replace":
{
// 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
for (int i = 0; i < splitGenreIds.Length; i++)
{
// create moviegenre object with genre id and movie id from movieToCreate object
MovieGenre movieGenreToAdd = new MovieGenre {
MovieId = movieId, GenreId = Guid.Parse(splitGenreIds[i])
};
movieGenreToAdd.Id = Guid.NewGuid();
_movieGenreRepository.AddMovieGenre(movieGenreToAdd);
}
break;
}
default:
// tell user operation not allowed?
break;
}
}
}
// save changes to database after all operations
// check if state is modified? this will always get run
if (!await _movieGenreRepository.SaveChangesAsync())
{
_logger.LogError("Saving changes to database while dealing with a moviegenre failed");
}
var movieToReturn = Mapper.Map <MovieDto>(movieToAddToDb);
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));
}
}
var movieToPatch = Mapper.Map <MovieToUpdateDto>(movieFromDb);
patchDoc.ApplyTo(movieToPatch, ModelState);
if (!ModelState.IsValid)
{
new ProccessingEntityObjectResultErrors(ModelState);
}
Mapper.Map(movieToPatch, movieFromDb);
_movieRepository.UpdateMovie(movieFromDb);
if (!await _movieRepository.SaveChangesAsync())
{
_logger.LogError($"Partially updating movie: {movieId} failed on save");
}
// loop on foreach Operations => if op.path == "GenreIds" => loop on value which contains list/array? of genreIds
foreach (var op in patchDoc.Operations)
{
if (op.path.ToLower() == "genreids")
{
//movieToPatch.GenreIds = (List<Guid>)op.value;
var genreIds = op.value.ToString();
// TODO make list guid instead of string so you dont have to parse on each use. What if only one, still split?
// TODO EXTENDED check if lenght is > 0 before all this, also check if valid Guids
var splitGenreIds = genreIds.Split(",");
switch (op.op)
{
case "add":
{
for (int i = 0; i < splitGenreIds.Length; i++)
{
// checking if genre already exists on movie
// will fail if we use wrapper class IsDeleted checker, NOT USING ATM
var moviegenreToAdd = await _movieGenreRepository.GetMovieGenreByMovieIdGenreIdAsync(movieId, Guid.Parse(splitGenreIds[i]));
if (moviegenreToAdd == null)
{
//create moviegenre object with genre id and movie id from movieToCreate object
MovieGenre movieGenreToAdd = new MovieGenre {
MovieId = movieId, GenreId = Guid.Parse(splitGenreIds[i])
};
movieGenreToAdd.Id = Guid.NewGuid();
_movieGenreRepository.AddMovieGenre(movieGenreToAdd);
}
}
break;
}
case "replace":
{
// 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
for (int i = 0; i < splitGenreIds.Length; i++)
{
// create moviegenre object with genre id and movie id from movieToCreate object
MovieGenre movieGenreToAdd = new MovieGenre {
MovieId = movieId, GenreId = Guid.Parse(splitGenreIds[i])
};
movieGenreToAdd.Id = Guid.NewGuid();
_movieGenreRepository.AddMovieGenre(movieGenreToAdd);
}
break;
}
case "remove":
{
for (int i = 0; i < splitGenreIds.Length; i++)
{
var moviegenreToDelete = await _movieGenreRepository.GetMovieGenreByMovieIdGenreIdAsync(movieId, Guid.Parse(splitGenreIds[i]));
_movieGenreRepository.DeleteMovieGenre(moviegenreToDelete);
}
break;
}
default:
// tell user operation not allowed?
break;
}
}
}
// save changes to database after all operations
// check if state is modified? this will always get run
if (!await _movieGenreRepository.SaveChangesAsync())
{
_logger.LogError("Saving changes to database while dealing with a moviegenre failed");
}
return(NoContent());
}