private CaruselImageDto GetImage(FilterIdDto filter, out List <CaruselImageDto> sortedImages, out int indexOfImage, int?userId = null)
{
using (var context = ContextFactory.CreateDbContext(ConnectionString))
{
IEnumerable <ImageDto> images = context.Images
.Include(image => image.UserToImageScores)
.ThenInclude(image => image.Score)
.Include(image => image.UserToImageTags)
.ThenInclude(image => image.Tag)
.Select(image => new ImageDto(image, userId));
if (images.Count() == 0)
{
throw new ImageRepositoryException("Недостаточно файлов для вывода страницы");
}
sortedImages = SortImages(images, filter).Select(image => new CaruselImageDto(image)).ToList();
CaruselImageDto currentImage = sortedImages.FirstOrDefault(i => i.Id == filter.Id);
if (currentImage == null)
{
throw new ImageRepositoryException("Изображение не найдено");
}
indexOfImage = sortedImages.IndexOf(currentImage);
return(currentImage);
}
}
public CaruselImageDto Get(FilterIdDto filter, int?userId = null)
{
var currentImage = GetImage(filter, out List <CaruselImageDto> sortedImages, out int indexOfImage, userId);
currentImage.IsFirst = indexOfImage == 0;
currentImage.IsLast = indexOfImage == sortedImages.Count() - 1;
return(currentImage);
}
public CaruselImageDto GetPrev(FilterIdDto filter, int?userId = null)
{
using (var context = ContextFactory.CreateDbContext(ConnectionString))
{
var currentImage = GetImage(filter, out List <CaruselImageDto> sortedImages, out int indexOfImage, userId);
if (indexOfImage - 1 < 0)
{
throw new ImageRepositoryException("Вне гранниц данных");
}
indexOfImage--;
currentImage = sortedImages[indexOfImage];
currentImage.IsFirst = indexOfImage == 0;
currentImage.IsLast = indexOfImage == sortedImages.Count() - 1;
return(currentImage);
}
}
public IActionResult GetPrev(FilterIdDto imageData)
{
int?userId = null;
if (User.Identity.IsAuthenticated)
{
userId = int.Parse(User.Claims.FirstOrDefault(claim => claim.Type == ClaimTypes.NameIdentifier).Value);
}
try
{
return(Ok(_imageRepository.GetPrev(imageData, userId)));
}
catch (ImageRepositoryException e)
{
return(BadRequest(e.Message));
}
}
