private IEnumerable <LinkDTO> CreateLinksForStaffMembers(StaffMemberResourceParameters staffMemberResourceParameters,
bool hasNext, bool hasPrevious)
{
var links = new List <LinkDTO>();
// self
links.Add(
new LinkDTO(CreateStaffMemberResourceUri(staffMemberResourceParameters,
ResourceUriType.Current)
, "self", "GET"));
if (hasNext)
{
links.Add(
new LinkDTO(CreateStaffMemberResourceUri(staffMemberResourceParameters,
ResourceUriType.NextPage),
"nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(
new LinkDTO(CreateStaffMemberResourceUri(staffMemberResourceParameters,
ResourceUriType.PreviousPage),
"previousPage", "GET"));
}
return(links);
}
public PagedList <StaffMember> GetAllStaffMembers(StaffMemberResourceParameters staffMemberResourceParameters)
{
var collectionBeforePaging =
_context.StaffMembers.ApplySort(staffMemberResourceParameters.OrderBy,
_staffMemberPropertyMappingService.GetPropertyMapping <StaffMemberDTO, StaffMember>());
if (!string.IsNullOrEmpty(staffMemberResourceParameters.SearchQuery))
{
// trim & ignore casing
var searchQueryForWhereClause = staffMemberResourceParameters.SearchQuery
.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging
.Where(s => s.Name.ToLowerInvariant().Contains(searchQueryForWhereClause));
}
return(PagedList <StaffMember> .Create(collectionBeforePaging,
staffMemberResourceParameters.PageNumber,
staffMemberResourceParameters.PageSize));
}
private string CreateStaffMemberResourceUri(
StaffMemberResourceParameters staffMemberResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(_urlHelper.Link("GetStaffMembers",
new
{
fields = staffMemberResourceParameters.Fields,
orderBy = staffMemberResourceParameters.OrderBy,
searchQuery = staffMemberResourceParameters.SearchQuery,
pageNumber = staffMemberResourceParameters.PageNumber - 1,
pageSize = staffMemberResourceParameters.PageSize
}));
case ResourceUriType.NextPage:
return(_urlHelper.Link("GetStaffMembers",
new
{
fields = staffMemberResourceParameters.Fields,
orderBy = staffMemberResourceParameters.OrderBy,
searchQuery = staffMemberResourceParameters.SearchQuery,
pageNumber = staffMemberResourceParameters.PageNumber + 1,
pageSize = staffMemberResourceParameters.PageSize
}));
default:
return(_urlHelper.Link("GetStaffMembers",
new
{
fields = staffMemberResourceParameters.Fields,
orderBy = staffMemberResourceParameters.OrderBy,
searchQuery = staffMemberResourceParameters.SearchQuery,
pageNumber = staffMemberResourceParameters.PageNumber,
pageSize = staffMemberResourceParameters.PageSize
}));
}
}
public IActionResult GetStaffMembersFromSupermarket(int supermarketId, StaffMemberResourceParameters staffMemberResourceParameters,
[FromHeader(Name = "Accept")] string mediaType)
{
// check mappings are valid
if (!_staffMemberPropertyMappingService.ValidMappingExistsFor <StaffMemberDTO, StaffMember>
(staffMemberResourceParameters.OrderBy))
{
return(BadRequest());
}
// check all fields are valid
if (!_typeHelperService.TypeHasProperties <StaffMemberDTO>
(staffMemberResourceParameters.Fields))
{
return(BadRequest());
}
var staffMembersFromRepo = _supermarketRepository.GetAllStaffMembersFromSupermarket(supermarketId, staffMemberResourceParameters);
var staffMembers = Mapper.Map <IEnumerable <StaffMemberDTO> >(staffMembersFromRepo);
if (mediaType == "application/vnd.idp.hateoas+json")
{
var paginationMetadata = new
{
totalCount = staffMembersFromRepo.TotalCount,
pageSize = staffMembersFromRepo.PageSize,
currentPage = staffMembersFromRepo.CurrentPage,
totalPages = staffMembersFromRepo.TotalPages,
};
Response.Headers.Add("X-Pagination",
JsonConvert.SerializeObject(paginationMetadata));
var links = CreateLinksForStaffMembers(staffMemberResourceParameters,
staffMembersFromRepo.HasNext, staffMembersFromRepo.HasPrevious);
var shapedStaffMembers = staffMembers.ShapeData(staffMemberResourceParameters.Fields);
var shapedStaffMembersWithLinks = shapedStaffMembers.Select(staffMember =>
{
var staffMemberAsDictionary = staffMember as IDictionary <string, object>;
var staffMemberLinks = CreateLinksForStaffMember(
(int)staffMemberAsDictionary["Id"], staffMemberResourceParameters.Fields);
staffMemberAsDictionary.Add("links", staffMemberLinks);
return(staffMemberAsDictionary);
});
var linkedCollectionResource = new
{
value = shapedStaffMembersWithLinks,
links = links
};
return(Ok(linkedCollectionResource));
}
else
{
var previousPageLink = staffMembersFromRepo.HasPrevious ?
CreateStaffMemberResourceUri(staffMemberResourceParameters,
ResourceUriType.PreviousPage) : null;
var nextPageLink = staffMembersFromRepo.HasNext ?
CreateStaffMemberResourceUri(staffMemberResourceParameters,
ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
previousPageLink,
nextPageLink,
totalCount = staffMembersFromRepo.TotalCount,
pageSize = staffMembersFromRepo.PageSize,
currentPage = staffMembersFromRepo.CurrentPage,
totalPages = staffMembersFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonConvert.SerializeObject(paginationMetadata));
return(Ok(staffMembers.ShapeData(staffMemberResourceParameters.Fields)));
}
}