public PagedList <Terminal> GetTerminals(TerminalResourceParameters terminalResourseParameters)
{
if (terminalResourseParameters == null)
{
throw new ArgumentNullException(nameof(terminalResourseParameters));
}
if (terminalResourseParameters.SiteId == Guid.Empty)
{
throw new ArgumentNullException(nameof(terminalResourseParameters));
}
var collection = _context.Terminal as IQueryable <Terminal>;
collection = collection.Where(a => a.SiteId == terminalResourseParameters.SiteId);
if (!string.IsNullOrWhiteSpace(terminalResourseParameters.SearchQuery))
{
var searchQuery = terminalResourseParameters.SearchQuery.Trim();
collection = collection.Where(a => a.TerminalName.Contains(searchQuery));
}
if (!string.IsNullOrWhiteSpace(terminalResourseParameters.OrderBy))
{
var terminalPropertyMappingDictionary = _propertyMappingService.GetTerminalPropertyMapping <TerminalDto, Terminal>();
collection = collection.ApplySort(terminalResourseParameters.OrderBy, terminalPropertyMappingDictionary);
}
//Paging.... happens LAST
return(PagedList <Terminal> .Create(collection,
terminalResourseParameters.PageNumber,
terminalResourseParameters.PageSize));
}
private IEnumerable <LinkDto> CreateLinksForTerminal(
TerminalResourceParameters terminalResourceParameters,
bool hasNext, bool hasPrevious)
{
var links = new List <LinkDto>();
// self
links.Add(
new LinkDto(CreateTerminalResourceUri(
terminalResourceParameters, ResourceUriType.Current)
, "self", "GET"));
if (hasNext)
{
links.Add(
new LinkDto(CreateTerminalResourceUri(
terminalResourceParameters, ResourceUriType.NextPage),
"nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(
new LinkDto(CreateTerminalResourceUri(
terminalResourceParameters, ResourceUriType.PreviousPage),
"previousPage", "GET"));
}
return(links);
}
public IActionResult GetTerminals(Guid siteId,
[FromQuery] TerminalResourceParameters terminalResourceParameters)
{
if (siteId == Guid.Empty)
{
throw new ArgumentNullException(nameof(siteId));
}
if (!_propertyMappingService.ValidTerminalMappingExistsFor <TerminalDto, Entities.Terminal>
(terminalResourceParameters.OrderBy))
{
return(BadRequest());
}
terminalResourceParameters.SiteId = siteId;
var terminalFromRepo = _terminalRepository.GetTerminals(terminalResourceParameters);
var paginationMetadata = new
{
totalCount = terminalFromRepo.TotalCount,
pageSize = terminalFromRepo.PageSize,
currentPage = terminalFromRepo.CurrentPage,
totalPages = terminalFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonSerializer.Serialize(paginationMetadata));
var links = CreateLinksForTerminal(terminalResourceParameters,
terminalFromRepo.HasNext,
terminalFromRepo.HasPrevious);
var shapedTerminals = _mapper.Map <IEnumerable <TerminalDto> >(terminalFromRepo)
.ShapeData(terminalResourceParameters.Fields);
var shapedTerminalWithLinks = shapedTerminals.Select(terminal =>
{
var terminalAsDictionary = terminal as IDictionary <string, object>;
var terminalLinks = CreateLinksForTerminal(siteId.ToString(), (string)terminalAsDictionary["Id"], null);
terminalAsDictionary.Add("links", terminalLinks);
return(terminalAsDictionary);
});
var linkedCollectionResource = new
{
value = shapedTerminalWithLinks,
links
};
return(Ok(linkedCollectionResource));
}
private string CreateTerminalResourceUri(
TerminalResourceParameters terminalResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetTerminal",
new
{
fields = terminalResourceParameters.Fields,
orderBy = terminalResourceParameters.OrderBy,
pageNumber = terminalResourceParameters.PageNumber - 1,
pageSize = terminalResourceParameters.PageSize,
searchQuery = terminalResourceParameters.SearchQuery
}));
case ResourceUriType.NextPage:
return(Url.Link("GetTerminal",
new
{
fields = terminalResourceParameters.Fields,
orderBy = terminalResourceParameters.OrderBy,
pageNumber = terminalResourceParameters.PageNumber + 1,
pageSize = terminalResourceParameters.PageSize,
searchQuery = terminalResourceParameters.SearchQuery
}));
case ResourceUriType.Current:
default:
return(Url.Link("GetTerminal",
new
{
fields = terminalResourceParameters.Fields,
orderBy = terminalResourceParameters.OrderBy,
pageNumber = terminalResourceParameters.PageNumber,
pageSize = terminalResourceParameters.PageSize,
searchQuery = terminalResourceParameters.SearchQuery
}));
}
}