/// <summary>
/// Get characters PagedList from repository.
/// </summary>
/// <param name="parameters"></param>
/// <returns></returns>
public PagedList <Character> GetCharacters(CharacterResourceParameters parameters)
{
var collectionBeforePaging = context.Characters
.ApplySort(parameters.OrderBy,
propertyMappingService.GetPropertyMapping <CharacterDto, Character>());
if (!string.IsNullOrEmpty(parameters.Planet))
{
var planetQuery = StringHelpers.TrimToLowerInvariant(parameters.Planet);
collectionBeforePaging = collectionBeforePaging
.Where(c => StringHelpers.TrimToLowerInvariant(c.Planet) == planetQuery);
}
if (!string.IsNullOrEmpty(parameters.SearchQuery))
{
var searchQuery = StringHelpers.TrimToLowerInvariant(parameters.SearchQuery);
collectionBeforePaging = collectionBeforePaging
.Where(c =>
StringHelpers.TrimToLowerInvariant(c.Name).Contains(searchQuery) ||
StringHelpers.TrimToLowerInvariant(c.Planet).Contains(searchQuery));
}
return(PagedList <Character> .Create(collectionBeforePaging,
parameters.PageNumber,
parameters.PageSize));
}
public IActionResult GetCharacters(CharacterResourceParameters parameters)
{
if (!propertyMappingService.ValidMappingExistsFor <CharacterDto, Character>
(parameters.OrderBy))
{
return(BadRequest());
}
if (!typeHelperService.TypeHasProperties <CharacterDto>(parameters.Fields))
{
return(BadRequest());
}
var charactersFromRepo = repository.GetCharacters(parameters);
var previousPageLink = charactersFromRepo.HasPrevious
? CreateCharactersResourcesUri(parameters, ResourceUriType.PreviousPage)
: null;
var nextPageLink = charactersFromRepo.HasNext
? CreateCharactersResourcesUri(parameters, ResourceUriType.NextPage)
: null;
var paginationMetadata = new
{
totalCount = charactersFromRepo.TotalCount,
pageSize = charactersFromRepo.PageSize,
currentPage = charactersFromRepo.CurrentPage,
totalPages = charactersFromRepo.TotalPages,
previousPageLink,
nextPageLink
};
Response.Headers.Add("X-Pagination",
Newtonsoft.Json.JsonConvert.SerializeObject(paginationMetadata));
var charactersToReturn = Mapper.Map <IEnumerable <CharacterDto> >(charactersFromRepo);
return(Ok(charactersToReturn.ShapeData(parameters.Fields)));
}
private string CreateCharactersResourcesUri(
CharacterResourceParameters parameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetCharacters", new
{
orderBy = parameters.OrderBy,
fields = parameters.Fields,
planet = parameters.Planet,
searchQuery = parameters.SearchQuery,
pageNumber = parameters.PageNumber - 1,
pageSize = parameters.PageSize
}));
case ResourceUriType.NextPage:
return(Url.Link("GetCharacters", new
{
orderBy = parameters.OrderBy,
fields = parameters.Fields,
planet = parameters.Planet,
searchQuery = parameters.SearchQuery,
pageNumber = parameters.PageNumber + 1,
pageSize = parameters.PageSize
}));
default:
return(Url.Link("GetCharacters", new
{
orderBy = parameters.OrderBy,
fields = parameters.Fields,
planet = parameters.Planet,
searchQuery = parameters.SearchQuery,
pageNumber = parameters.PageNumber,
pageSize = parameters.PageSize
}));
}
}
