private string CreateFilteredPositionsResourceUrl(
ResourceUriType uriType,
PositionFilterDto filterModel)
{
int targetPage;
switch (uriType)
{
case ResourceUriType.PreviousPage:
targetPage = filterModel.Page - 1;
break;
case ResourceUriType.NextPage:
targetPage = filterModel.Page + 1;
break;
case ResourceUriType.CurrentPage:
default:
targetPage = filterModel.Page;
break;
}
return(Url.Link(
nameof(GetFilteredAsync),
new
{
Page = targetPage,
PageSize = filterModel.PageSize,
PositionType = filterModel.PositionType,
OrderByField = filterModel.OrderByField,
OrderByDirection = filterModel.OrderByDirection
}));
}
private IEnumerable <Link> CreateLinksForFilteredPositions(
LinkedPaginatedResult <LinkedPositionDto> paginatedResult,
PositionFilterDto filterModel)
{
var links = new List <Link>
{
new Link
{
Href = CreateFilteredPositionsResourceUrl(
ResourceUriType.CurrentPage,
filterModel),
Rel = "self",
Method = HttpMethod.Get.ToString()
}
};
if (paginatedResult.HasPrevious)
{
links.Add(
new Link
{
Href = CreateFilteredPositionsResourceUrl(
ResourceUriType.CurrentPage,
filterModel),
Rel = "previousPage",
Method = HttpMethod.Get.ToString()
});
}
if (paginatedResult.HasNext)
{
links.Add(
new Link
{
Href = CreateFilteredPositionsResourceUrl(
ResourceUriType.CurrentPage,
filterModel),
Rel = "nextPage",
Method = HttpMethod.Get.ToString()
});
}
return(links);
}
public async Task <IActionResult> GetFilteredAsync([FromQuery] PositionFilterDto filterModel)
{
_logger.LogInformation($"{nameof(PositionsController)}: {nameof(GetFilteredAsync)} was called with filter model: {JsonSerializer.Serialize(filterModel)}.");
var filterDomainModel = _mapper.Map <PositionFilterDomainModel>(filterModel);
var modelState = _positionsService.ValidatePositionFilterModel(filterDomainModel);
if (!modelState.IsValid)
{
return(UnprocessableEntity(modelState));
}
var pagedPositionsDomainModel = await _positionsService.GetFilteredPositions(
filterDomainModel,
_currentUserService.AccessKey);
var pagedPositionsDto = _mapper.Map <PaginatedResult <PositionDto> >(pagedPositionsDomainModel);
SetPaginationHeaders(pagedPositionsDomainModel.Metadata);
if (_mediaTypeService.IsLinkedRepresentation(_mediaType))
{
var linkedPositionsDto = pagedPositionsDto.Results
.Select(position => new LinkedPositionDto
{
Position = position,
Links = CreateLinksForPosition(position.Symbol)
});
var linkedPagedPositionsDto = new LinkedPaginatedResult <LinkedPositionDto>(linkedPositionsDto, pagedPositionsDto.Metadata);
linkedPagedPositionsDto.Links =
CreateLinksForFilteredPositions(linkedPagedPositionsDto, filterModel);
return(Ok(linkedPagedPositionsDto));
}
else
{
return(Ok(pagedPositionsDto));
}
}
