private string CreateAuthorsRecourceUri(AuthorsParam authorsParam, ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetAuthors", new
{
orderBy = authorsParam.OrderBy,
pageNumber = authorsParam.PageNumber - 1,
pageSize = authorsParam.PageSize,
mainCategory = authorsParam.MainCategory,
searchQuery = authorsParam.SearchQuery
}));
case ResourceUriType.NextPage:
return(Url.Link("GetAuthors", new
{
orderBy = authorsParam.OrderBy,
pageNumber = authorsParam.PageNumber + 1,
pageSize = authorsParam.PageSize,
mainCategory = authorsParam.MainCategory,
searchQuery = authorsParam.SearchQuery
}));
default:
return(Url.Link("GetAuthors", new
{
orderBy = authorsParam.OrderBy,
pageNumber = authorsParam.PageNumber,
pageSize = authorsParam.PageSize,
mainCategory = authorsParam.MainCategory,
searchQuery = authorsParam.SearchQuery
}));
}
}
public IActionResult GetAuthors([FromQuery] AuthorsParam authorsParam)
{
if (!_mappingService.ValidMappingExistFor <AuthorsDto, Author>(authorsParam.OrderBy))
{
return(BadRequest());
}
var authorsFromRepo = _courseLibraryRepository.GetAuthors(authorsParam);
if (authorsFromRepo == null)
{
return(NotFound());
}
var previousPageLink = authorsFromRepo.HasPreviousPage ?
CreateAuthorsRecourceUri(authorsParam, ResourceUriType.PreviousPage) : null;
var nextPageLink = authorsFromRepo.HasNextPage ?
CreateAuthorsRecourceUri(authorsParam, ResourceUriType.NextPage) : null;
var paginationMataDate = new
{
totalCount = authorsFromRepo.TotalCount,
pageSize = authorsFromRepo.PageSize,
currentPage = authorsFromRepo.CurrentPage,
totalPage = authorsFromRepo.TotalPages,
previousPageLink,
nextPageLink
};
Response.Headers.Add("x-Pagination", JsonSerializer.Serialize(paginationMataDate));
return(Ok(_mapper.Map <IEnumerable <AuthorsDto> >(authorsFromRepo)));
}
public PagedList <Author> GetAuthors(AuthorsParam authorsParam)
{
if (authorsParam == null)
{
throw new ArgumentNullException(nameof(authorsParam));
}
var authorsCollection = _courseLibraryContext.Authors as IQueryable <Author>;
if (!string.IsNullOrWhiteSpace(authorsParam.MainCategory))
{
var mainCategory = authorsParam.MainCategory.Trim();
authorsCollection = authorsCollection.Where(x => x.MainCategory.Contains(mainCategory));
}
if (!string.IsNullOrEmpty(authorsParam.SearchQuery))
{
var searchQuery = authorsParam.SearchQuery.Trim();
authorsCollection = authorsCollection.Where(x => x.FirstName.Contains(searchQuery) ||
x.LastName.Contains(searchQuery) || x.MainCategory.Contains(searchQuery));
}
if (!string.IsNullOrWhiteSpace(authorsParam.OrderBy))
{
var authorPropertyMappingDictionary = _mappingService.GetPropertyMapping <AuthorsDto, Author>();
authorsCollection = authorsCollection.ApplySort(authorsParam.OrderBy, authorPropertyMappingDictionary);
}
return(PagedList <Author> .Create(authorsCollection, authorsParam.PageNumber, authorsParam.PageSize));
}
