public IActionResult GetProductsFromSupermarket(int supermarketId, ProductResourceParameters productResourceParameters,
[FromHeader(Name = "Accept")] string mediaType)
{
if (!_supermarketRepository.SupermarketExists(supermarketId))
{
return(NotFound());
}
// check mappings are valid
if (!_productPropertyMappingService.ValidMappingExistsFor <ProductDTO, Product>
(productResourceParameters.OrderBy))
{
return(BadRequest());
}
// check all fields are valid
if (!_typeHelperService.TypeHasProperties <ProductDTO>
(productResourceParameters.Fields))
{
return(BadRequest());
}
var productsFromRepo = _supermarketRepository.GetAllProductsFromSupermarket(supermarketId, productResourceParameters);
var products = Mapper.Map <IEnumerable <ProductDTO> >(productsFromRepo);
if (mediaType == "application/vnd.idp.hateoas+json")
{
var paginationMetadata = new
{
totalCount = productsFromRepo.TotalCount,
pageSize = productsFromRepo.PageSize,
currentPage = productsFromRepo.CurrentPage,
totalPages = productsFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonConvert.SerializeObject(paginationMetadata));
var links = CreateLinksForProducts(productResourceParameters,
productsFromRepo.HasNext, productsFromRepo.HasPrevious);
var shapedProducts = products.ShapeData(productResourceParameters.Fields);
var shapedProductsWithLinks = shapedProducts.Select(product =>
{
var productAsDictionary = product as IDictionary <string, object>;
var productLinks = CreateLinksForProduct(
(int)productAsDictionary["ProductId"], productResourceParameters.Fields);
productAsDictionary.Add("links", productLinks);
return(productAsDictionary);
});
var linkedCollectionResource = new
{
value = shapedProductsWithLinks,
links = links
};
return(Ok(linkedCollectionResource));
}
else
{
var previousPageLink = productsFromRepo.HasPrevious ?
CreateProductResourceUri(productResourceParameters,
ResourceUriType.PreviousPage) : null;
var nextPageLink = productsFromRepo.HasNext ?
CreateProductResourceUri(productResourceParameters,
ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
previousPageLink,
nextPageLink,
totalCount = productsFromRepo.TotalCount,
pageSize = productsFromRepo.PageSize,
currentPage = productsFromRepo.CurrentPage,
totalPages = productsFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonConvert.SerializeObject(paginationMetadata));
return(Ok(products.ShapeData(productResourceParameters.Fields)));
}
}
