public PagedList <Dispenser> GetDispensers(DispenserResourceParameters dispenserResourseParameters)
{
if (dispenserResourseParameters == null)
{
throw new ArgumentNullException(nameof(dispenserResourseParameters));
}
var collection = _context.Dispensers as IQueryable <Dispenser>;
if (!string.IsNullOrWhiteSpace(dispenserResourseParameters.Type))
{
var type = dispenserResourseParameters.Type.Trim();
collection = collection.Where(a => a.DispenserType == type);
}
if (!string.IsNullOrWhiteSpace(dispenserResourseParameters.SearchQuery))
{
var searchQuery = dispenserResourseParameters.SearchQuery.Trim();
collection = collection.Where(a => a.DispenserType.Contains(searchQuery) ||
a.Name.Contains(searchQuery));
}
if (!string.IsNullOrWhiteSpace(dispenserResourseParameters.OrderBy))
{
var dispenserPropertyMappingDictionary = _propertyMappingService.GetDispenserPropertyMapping <DispenserDto, Dispenser>();
collection = collection.ApplySort(dispenserResourseParameters.OrderBy, dispenserPropertyMappingDictionary);
}
//Paging.... happens LAST
return(PagedList <Dispenser> .Create(collection,
dispenserResourseParameters.PageNumber,
dispenserResourseParameters.PageSize));
}
private IEnumerable <LinkDto> CreateLinksForDispenser(
DispenserResourceParameters dispenserResourceParameters,
bool hasNext, bool hasPrevious)
{
var links = new List <LinkDto>();
// self
links.Add(
new LinkDto(CreateDispensersResourceUri(
dispenserResourceParameters, ResourceUriType.Current)
, "self", "GET"));
if (hasNext)
{
links.Add(
new LinkDto(CreateDispensersResourceUri(
dispenserResourceParameters, ResourceUriType.NextPage),
"nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(
new LinkDto(CreateDispensersResourceUri(
dispenserResourceParameters, ResourceUriType.PreviousPage),
"previousPage", "GET"));
}
return(links);
}
public IActionResult GetDispensers(Guid terminalId,
[FromQuery] DispenserResourceParameters dispenserResourceParameters)
{
if (!_propertyMappingService.ValidCompanyMappingExistsFor <CompanyDto, Entities.Company>
(dispenserResourceParameters.OrderBy))
{
return(BadRequest());
}
dispenserResourceParameters.TerminalId = terminalId;
var dispenserFromRepo = _dispenserRepository.GetDispensers(dispenserResourceParameters);
var paginationMetadata = new
{
totalCount = dispenserFromRepo.TotalCount,
pageSize = dispenserFromRepo.PageSize,
currentPage = dispenserFromRepo.CurrentPage,
totalPages = dispenserFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonSerializer.Serialize(paginationMetadata));
var links = CreateLinksForDispenser(dispenserResourceParameters,
dispenserFromRepo.HasNext,
dispenserFromRepo.HasPrevious);
var shapedDispensers = _mapper.Map <IEnumerable <DispenserDto> >(dispenserFromRepo)
.ShapeData(dispenserResourceParameters.Fields);
var shapedDispensersWithLinks = shapedDispensers.Select(dispenser =>
{
var dispenserAsDictionary = dispenser as IDictionary <string, object>;
var dispenserLinks = CreateLinksForDispenser(terminalId.ToString(), dispenserAsDictionary["Id"].ToString(), null);
dispenserAsDictionary.Add("links", dispenserLinks);
return(dispenserAsDictionary);
});
var linkedCollectionResource = new
{
value = shapedDispensersWithLinks,
links
};
return(Ok(linkedCollectionResource));
}
private string CreateDispensersResourceUri(
DispenserResourceParameters dispenserResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetDispensers",
new
{
fields = dispenserResourceParameters.Fields,
orderBy = dispenserResourceParameters.OrderBy,
pageNumber = dispenserResourceParameters.PageNumber - 1,
pageSize = dispenserResourceParameters.PageSize,
mainCategory = dispenserResourceParameters.Type,
searchQuery = dispenserResourceParameters.SearchQuery
}));
case ResourceUriType.NextPage:
return(Url.Link("GetDispensers",
new
{
fields = dispenserResourceParameters.Fields,
orderBy = dispenserResourceParameters.OrderBy,
pageNumber = dispenserResourceParameters.PageNumber + 1,
pageSize = dispenserResourceParameters.PageSize,
mainCategory = dispenserResourceParameters.Type,
searchQuery = dispenserResourceParameters.SearchQuery
}));
case ResourceUriType.Current:
default:
return(Url.Link("GetDispensers",
new
{
fields = dispenserResourceParameters.Fields,
orderBy = dispenserResourceParameters.OrderBy,
pageNumber = dispenserResourceParameters.PageNumber,
pageSize = dispenserResourceParameters.PageSize,
mainCategory = dispenserResourceParameters.Type,
searchQuery = dispenserResourceParameters.SearchQuery
}));
}
}
