public async Task <PagedList <SlugEntity> > GetAllSlugsAsync(SlugsResourceParameters slugsResourceParameter)
{
if (slugsResourceParameter == null)
{
throw new ArgumentNullException(nameof(slugsResourceParameter));
}
IQueryable <SlugEntity> collection = _murlContext.Slugs;
var orderedCollection = collection.OrderBy(c => c.Url);
return(await PagedList <SlugEntity> .Create(orderedCollection, slugsResourceParameter));
}
private object CreatePaginationMetaData(PagedList <SlugEntity> slugs, SlugsResourceParameters slugsResourceParameters)
{
string previousPageLink = slugs.HasPrevious ? CreateSlugsResourceUri(slugsResourceParameters, ResourceUriType.PreviousPage) : null;
string nextPageLink = slugs.HasNext ? CreateSlugsResourceUri(slugsResourceParameters, ResourceUriType.NextPage) : null;
return(new
{
totalCount = slugs.TotalCount,
pageSize = slugs.PageSize,
currentPage = slugs.CurrentPage,
totalPages = slugs.TotalPages,
previousPageLink,
nextPageLink
});
}
public async Task <ActionResult <IEnumerable <SlugDto> > > GetSlugs([FromQuery] SlugsResourceParameters slugsResourceParameters)
{
_logger.LogInformation(string.Format($"GetSlugs [HTTP Get]: getting all URL values for page number: {slugsResourceParameters.PageNumber} and page size: {slugsResourceParameters.PageSize}"));
// check if slug exists
PagedList <SlugEntity> slugs = await _murlRepository.GetAllSlugsAsync(slugsResourceParameters);
var paginationMetaData = CreatePaginationMetaData(slugs, slugsResourceParameters);
Response.Headers.Add("X-Pagination", JsonSerializer.Serialize(paginationMetaData));
if (slugs == null || slugs.Count() == 0)
{
return(new NotFoundObjectResult(new { message = "no URLs found." }));
}
else
{
return(new OkObjectResult(slugs));
}
}
private string CreateSlugsResourceUri(SlugsResourceParameters slugsResourceParameters, ResourceUriType type)
{
dynamic routevalues = new ExpandoObject();
routevalues.pageNumber = slugsResourceParameters.PageNumber;
routevalues.pageSize = slugsResourceParameters.PageSize;
routevalues.mainCategory = slugsResourceParameters.MainCategory;
routevalues.searchQuery = slugsResourceParameters.SearchQuery;
switch (type)
{
case ResourceUriType.PreviousPage:
routevalues.pageNumber = slugsResourceParameters.PageNumber - 1;
break;
case ResourceUriType.NextPage:
routevalues.pageNumber = slugsResourceParameters.PageNumber + 1;
break;
default:
break;
}
return(Url.Link("GetSlugs", routevalues));
}
