private async Task <int> Create(Director director)
{
director.CreatedDate = DateTime.Now;
await _context.Directors.AddAsync(director);
await _context.SaveChangesAsync();
if (director.Id == 0)
{
throw new Exception("Невозможно создать объект");
}
return(director.Id);
}
private async Task <int> CreateFilm(Film film)
{
film.CreatedDate = DateTime.Now;
await _context.Films.AddAsync(film);
await _context.SaveChangesAsync();
if (film.Id == 0)
{
throw new Exception("Невозможно создать объект");
}
return(film.Id);
}
public async Task <FilmViewModel> EditFilmAsync(FilmViewModel film)
{
if (film == null)
{
throw new NullReferenceException($"Параметр film не должен быть null!");
}
FilmDataModel model;
using (var ctx = new FilmsCatalogDbContext())
{
model = await ctx.Films
.Include("User")
.FirstOrDefaultAsync(f => f.Id == film.Id);
if (model == null)
{
throw new Exception($"Фильм с идентификатором {film.Id} не найден в базе данных!");
}
model.Name = film.Name;
model.Producer = film.Producer;
model.Description = film.Description;
model.CreateYear = film.CreateYear;
model.MimeType = film.MimeType;
model.FileName = film.FileName;
await ctx.SaveChangesAsync();
}
var filmMapper = new FilmModelMapper().CreateMapper();
return(filmMapper.Map <FilmViewModel>(model));
}
public async Task <bool> RemoveFilmAsync(int id)
{
using (var ctx = new FilmsCatalogDbContext())
{
var model = await ctx.Films.FirstOrDefaultAsync(f => f.Id == id);
if (model == null)
{
throw new Exception($"Фильм с идентификатором {id} не найден в базе данных!");
}
ctx.Films.Remove(model);
await ctx.SaveChangesAsync();
}
return(true);
}
public async Task <FilmViewModel> SaveFilmAsync(FilmViewModel film)
{
if (film == null)
{
throw new NullReferenceException($"Параметр film не должен быть null!");
}
var filmMapper = new FilmModelMapper().CreateMapper();
var model = filmMapper.Map <FilmDataModel>(film);
using (var ctx = new FilmsCatalogDbContext())
{
model = ctx.Films.Add(model);
await ctx.SaveChangesAsync();
}
return(filmMapper.Map <FilmViewModel>(model));
}