public PagedList <FuelType> GetFuelTypes(FuelTypeResourceParameters fuelTypeParameters)
{
if (fuelTypeParameters == null)
{
throw new ArgumentNullException(nameof(fuelTypeParameters));
}
var collection = _context.FuelType as IQueryable <FuelType>;
if (!string.IsNullOrWhiteSpace(fuelTypeParameters.SearchQuery))
{
var searchQuery = fuelTypeParameters.SearchQuery.Trim();
collection = collection.Where(a => a.Name.Contains(searchQuery));
}
if (!string.IsNullOrWhiteSpace(fuelTypeParameters.OrderBy))
{
var fuelTypePropertyMappingDictionary = _propertyMappingService.GetFuelTypePropertyMapping <FuelTypeDto, FuelType>();
collection = collection.ApplySort(fuelTypeParameters.OrderBy, fuelTypePropertyMappingDictionary);
}
//Paging.... happens LAST
return(PagedList <FuelType> .Create(collection,
fuelTypeParameters.PageNumber,
fuelTypeParameters.PageSize));
}
private IEnumerable <LinkDto> CreateLinksForFuelType(
FuelTypeResourceParameters fuelTypeResourceParameters,
bool hasNext, bool hasPrevious)
{
var links = new List <LinkDto>();
// self
links.Add(
new LinkDto(CreateFuelTypesResourceUri(
fuelTypeResourceParameters, ResourceUriType.Current)
, "self", "GET"));
if (hasNext)
{
links.Add(
new LinkDto(CreateFuelTypesResourceUri(
fuelTypeResourceParameters, ResourceUriType.NextPage),
"nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(
new LinkDto(CreateFuelTypesResourceUri(
fuelTypeResourceParameters, ResourceUriType.PreviousPage),
"previousPage", "GET"));
}
return(links);
}
public IActionResult GetFuelTypes(
[FromQuery] FuelTypeResourceParameters fuelTypeResourceParameters)
{
if (!_propertyMappingService.ValidFuelTypeMappingExistsFor <FuelTypeDto, Entities.FuelType>
(fuelTypeResourceParameters.OrderBy))
{
return(BadRequest());
}
var fuelTypeFromRepo = _fuelTypeRepository.GetFuelTypes(fuelTypeResourceParameters);
var paginationMetadata = new
{
totalCount = fuelTypeFromRepo.TotalCount,
pageSize = fuelTypeFromRepo.PageSize,
currentPage = fuelTypeFromRepo.CurrentPage,
totalPages = fuelTypeFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonSerializer.Serialize(paginationMetadata));
var links = CreateLinksForFuelType(fuelTypeResourceParameters,
fuelTypeFromRepo.HasNext,
fuelTypeFromRepo.HasPrevious);
var shapedFuelTypes = _mapper.Map <IEnumerable <FuelTypeDto> >(fuelTypeFromRepo)
.ShapeData(fuelTypeResourceParameters.Fields);
var shapedFuelTypesWithLinks = shapedFuelTypes.Select(fueltypes =>
{
var fuelTypeAsDictionary = fueltypes as IDictionary <string, object>;
var fuelTypeLinks = CreateLinksForFuelType((string)fuelTypeAsDictionary["Id"], null);
fuelTypeAsDictionary.Add("links", fuelTypeLinks);
return(fuelTypeAsDictionary);
});
var linkedCollectionResource = new
{
value = shapedFuelTypesWithLinks,
links
};
return(Ok(linkedCollectionResource));
}
private string CreateFuelTypesResourceUri(
FuelTypeResourceParameters fuelTypeResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetFuelType",
new
{
fields = fuelTypeResourceParameters.Fields,
orderBy = fuelTypeResourceParameters.OrderBy,
pageNumber = fuelTypeResourceParameters.PageNumber - 1,
pageSize = fuelTypeResourceParameters.PageSize,
searchQuery = fuelTypeResourceParameters.SearchQuery
}));
case ResourceUriType.NextPage:
return(Url.Link("GetFuelType",
new
{
fields = fuelTypeResourceParameters.Fields,
orderBy = fuelTypeResourceParameters.OrderBy,
pageNumber = fuelTypeResourceParameters.PageNumber + 1,
pageSize = fuelTypeResourceParameters.PageSize,
searchQuery = fuelTypeResourceParameters.SearchQuery
}));
case ResourceUriType.Current:
default:
return(Url.Link("GetFuelType",
new
{
fields = fuelTypeResourceParameters.Fields,
orderBy = fuelTypeResourceParameters.OrderBy,
pageNumber = fuelTypeResourceParameters.PageNumber,
pageSize = fuelTypeResourceParameters.PageSize,
searchQuery = fuelTypeResourceParameters.SearchQuery
}));
}
}
