public async Task <IEnumerable <FileItem> > GetFileItems(string filename = null, string description = null, string filetype = null, string sort = "id", string order = "asc", int pageNo = 1, int pageSize = maxPageSize)
{
//Get all FileItems from a user
FileItemSet fileItemSet = await _context.GetAllFilesUsingAPI(User.GetUserId());
IList <FileItem> fileItems = fileItemSet.ListFileItems;
//reset pagesize if higher than maxPageSize
if (pageSize > maxPageSize)
{
pageSize = maxPageSize;
}
//search string
fileItems = fileItems.Where(x => (filename == null || x.FileName.Contains(filename)))
.Where(x => (description == null || x.Description.Contains(description)))
.Where(x => (filetype == null || x.DataType.Contains(filetype))).ToList();
//sort fileItems
var sortedFileItems = fileItems.ApplySorting(sort, order);
//metadata för paging
int totalFileItems = sortedFileItems.Count;
int totalPages = (int)Math.Ceiling((double)totalFileItems / pageSize);
//Previous link
var prevPageLink = pageNo == 1 ? string.Empty : _urlHelper.Link("GetFileItems",
new
{
pageNo = pageNo - 1,
pageSize = pageSize
});
//Next link
var nextPageLink = pageNo == totalPages ? string.Empty : _urlHelper.Link("GetFileItems",
new
{
pageNo = pageNo + 1,
pageSize = pageSize
});
//page header info
var pageHeader = new
{
pageNo = pageNo,
pageSize = pageSize,
totalFileItems = totalFileItems,
totalPages = totalPages,
prevPageLink = prevPageLink,
nextPageLink = nextPageLink
};
Response.Headers.Add("X-PageInfo", JsonConvert.SerializeObject(pageHeader));
return(sortedFileItems.Skip((pageNo - 1) * pageSize).Take(pageSize));
}
// Read (All) METADATA
public async Task <FileItemSet> GetAllFilesUsingAPI(string userID)
{
var ListFileItems = await _context.FileItems.Where(x => x.UserId == userID).ToListAsync();
FileItemSet returnFileITem = new FileItemSet()
{
ListFileItems = ListFileItems
};
return(returnFileITem);
}