public ActionResult <SongbookCollectionResult> Get(SongbookResourceParameters parameters)
{
_logger.LogDebug("SongbookController.Get called with pageNumber {@pageNumber} and {@pageSize}", parameters.PageNumber, parameters.PageSize);
if (!_propertyMappingService.ValidMappingExistsFor <SongbookDto, Songbook>(parameters.OrderBy))
{
return(BadRequest());
}
var songbooks = _repository.GetSongbookByCriteria(_mapper.Map <SongbookSearchCriteria>(parameters));
var paginationMetadata = new
{
totalCount = songbooks.TotalCount,
pageSize = songbooks.PageSize,
currentPage = songbooks.CurrentPage,
totalPages = songbooks.TotalPages
};
Response.Headers.Add("X-Pagination", JsonSerializer.Serialize(paginationMetadata));
var songbookResults = _mapper.Map <IEnumerable <SongbookResult> >(songbooks);
var collectionResult = new SongbookCollectionResult()
{
Results = songbookResults, Links = CreateLinksForSongbooks(parameters, songbooks.HasNext, songbooks.HasPrevious)
};
return(Ok(collectionResult));
}
private string CreateSongbookResourceUri(SongbookResourceParameters parameters, ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetSongbooks", new
{
pageNumber = parameters.PageNumber - 1,
pageSize = parameters.PageSize
}));
case ResourceUriType.NextPage:
return(Url.Link("GetSongbooks", new
{
pageNumber = parameters.PageNumber + 1,
pageSize = parameters.PageSize
}));
case ResourceUriType.Current:
default:
return(Url.Link("GetSongbooks", new
{
pageNumber = parameters.PageNumber,
pageSize = parameters.PageSize
}));
}
}
private List <Link> CreateLinksForSongbooks(SongbookResourceParameters parameters, bool hasNext, bool hasPrevious)
{
var links = new List <Link>();
links.Add(new Link(CreateSongbookResourceUri(parameters, ResourceUriType.Current), "self", "GET"));
links.Add(new Link(CreateSongbookResourceUri(parameters, ResourceUriType.Current), "delete_songbook", "DELETE"));
if (hasNext)
{
links.Add(new Link(CreateSongbookResourceUri(parameters, ResourceUriType.NextPage), "next_page", "GET"));
}
if (hasPrevious)
{
links.Add(new Link(CreateSongbookResourceUri(parameters, ResourceUriType.PreviousPage), "previous_page", "GET"));
}
return(links);
}
