private string CreateVideosResourceUri(VideoResourceParameters parameters, ResourceUriType type, string user)
{
switch (type)
{
case ResourceUriType.previousPage:
return(urlHelper.Link("GetVideos", new
{
username = user,
parameters = new VideoResourceParameters
{
Fields = parameters.Fields,
OrderBy = parameters.OrderBy,
searchQuery = parameters.searchQuery,
Title = parameters.Title,
PageNumber = parameters.pageNumber - 1,
PageSize = parameters.PageSize
}
}));
case ResourceUriType.nextPage:
return(urlHelper.Link("GetVideos", new
{
username = user,
parameters = new VideoResourceParameters
{
Fields = parameters.Fields,
OrderBy = parameters.OrderBy,
searchQuery = parameters.searchQuery,
Title = parameters.Title,
PageNumber = parameters.pageNumber + 1,
PageSize = parameters.PageSize
}
}));
default:
return(urlHelper.Link("GetVideos", new
{
searchQuery = parameters.searchQuery,
Title = parameters.Title,
username = user,
parameters = new VideoResourceParameters
{
Fields = parameters.Fields,
OrderBy = parameters.OrderBy,
searchQuery = parameters.searchQuery,
Title = parameters.Title,
PageNumber = parameters.pageNumber,
PageSize = parameters.PageSize
}
}));
}
}
private IActionResult GetVideos(string username, [FromQuery] VideoResourceParameters parameters)
{
if (!typeHelperService.TypeHasProperties <VideoForDisplayDTO>(parameters.Fields))
{
return(BadRequest());
}
if (!propertyMappingService.ValidMappingExistsFor <VideoForDisplayDTO, Video>(parameters.OrderBy))
{
return(BadRequest());
}
if (string.IsNullOrEmpty(username))
{
return(BadRequest());
}
var videos = videoRepository.GetEntities(username, parameters);
if (videos == null)
{
return(NotFound());
}
var previousLink = videos.HasPrevious ? CreateVideosResourceUri(parameters, ResourceUriType.previousPage, username) : null;
var nextLink = videos.HasNext ? CreateVideosResourceUri(parameters, ResourceUriType.nextPage, username) : null;
var paginatioMetadata = new
{
totalCount = videos.TotalCount,
pageSize = videos.PageSize,
currentPage = videos.CurrentPage,
totalPages = videos.TotalPages,
previousPageLink = previousLink,
nextPageLink = nextLink
};
Response.Headers.Add("X-Pagination", Newtonsoft.Json.JsonConvert.SerializeObject(paginatioMetadata));
var videosToReturn = Mapper.Map <IEnumerable <VideoForDisplayDTO> >(videos);
var links = CreateLinksForVideos(username, parameters, videos.HasNext, videos.HasPrevious);
videosToReturn = videosToReturn.Select(v =>
{
var videoWithLinks = CreateLinksForVideo(v);
return(videoWithLinks);
});
var result = videosToReturn.ShapeData(parameters.Fields);
return(Ok(result));
}
private IEnumerable <LinkDTO> CreateLinksForVideos(string user, VideoResourceParameters parameters, bool hasNext, bool hasPrevious)
{
var links = new List <LinkDTO>();
links.Add(new LinkDTO(CreateVideosResourceUri(parameters, ResourceUriType.Current, user), "self", "GET"));
if (hasNext)
{
links.Add(new LinkDTO(CreateVideosResourceUri(parameters, ResourceUriType.nextPage, user), "nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(new LinkDTO(CreateVideosResourceUri(parameters, ResourceUriType.previousPage, user), "nextPage", "GET"));
}
return(links);
}
public PageList <Video> GetEntities(string user, VideoResourceParameters parameters)
{
var collectionBeforePaging = context.Videos.OrderBy(x => x.UploadedDate).AsQueryable();
collectionBeforePaging = context.Videos.ApplySort(parameters.OrderBy, propertyMappingService.GetPropertyMapping <VideoForDisplayDTO, Video>());
if (!string.IsNullOrEmpty(parameters.Title))
{
var filterClause = parameters.Title.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging.Where(x => x.Title.ToLowerInvariant() == filterClause);
}
if (!string.IsNullOrEmpty(parameters.searchQuery))
{
var searchQuery = parameters.searchQuery.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging.Where(a => a.Properties.ToLowerInvariant().Contains(searchQuery) || a.Title.ToLowerInvariant().Contains(searchQuery) || a.Username.Contains(searchQuery));
}
return(PageList <Video> .Create(collectionBeforePaging, parameters.pageNumber, parameters.PageSize));
// return context.Videos.Where(x => x.Username == user).OrderBy(x => x.UploadedDate).Skip(parameters.PageSize * (parameters.pageNumber - 1)).Take(parameters.PageSize).ToList();
}
public IActionResult GetVideosWithCustomeMedia(string username, VideoResourceParameters parameters, [FromHeader(Name = "Accept")] string mediaType)
{
if (!typeHelperService.TypeHasProperties <VideoForDisplayDTO>(parameters.Fields))
{
return(BadRequest());
}
if (!propertyMappingService.ValidMappingExistsFor <VideoForDisplayDTO, Video>(parameters.OrderBy))
{
return(BadRequest());
}
if (string.IsNullOrEmpty(username))
{
return(BadRequest());
}
var videos = videoRepository.GetEntities(username, parameters);
if (videos == null)
{
return(NotFound());
}
var paginatioMetadata = new
{
totalCount = videos.TotalCount,
pageSize = videos.PageSize,
currentPage = videos.CurrentPage,
totalPages = videos.TotalPages
};
Response.Headers.Add("X-Pagination", Newtonsoft.Json.JsonConvert.SerializeObject(paginatioMetadata));
var videosToReturn = Mapper.Map <IEnumerable <VideoForDisplayDTO> >(videos);
if (mediaType == "application/vnd.ak.hateoas+json")
{
var linksForVideos = CreateLinksForVideos(username, parameters, videos.HasNext, videos.HasPrevious);
var result = videosToReturn.ShapeData(parameters.Fields);
result.Select(video =>
{
var videoAsDictionary = video as IDictionary <string, object>;
var videoLinks = CreateLinksForVideoById((int)videoAsDictionary["VideoId"], parameters.Fields);
videoAsDictionary.Add("links", videoLinks);
return(videoAsDictionary);
});
var linkedCollectionResource = new
{
value = result,
links = linksForVideos
};
return(Ok(linkedCollectionResource));
}
else
{
var previousLink = videos.HasPrevious ? CreateVideosResourceUri(parameters, ResourceUriType.previousPage, username) : null;
var nextLink = videos.HasNext ? CreateVideosResourceUri(parameters, ResourceUriType.nextPage, username) : null;
var newpaginatioMetadata = new
{
totalCount = videos.TotalCount,
pageSize = videos.PageSize,
currentPage = videos.CurrentPage,
totalPages = videos.TotalPages,
previousPageLink = previousLink,
nextPageLink = nextLink
};
Response.Headers.Add("X-Pagination", Newtonsoft.Json.JsonConvert.SerializeObject(newpaginatioMetadata));
videosToReturn = Mapper.Map <IEnumerable <VideoForDisplayDTO> >(videos);
var links = CreateLinksForVideos(username, parameters, videos.HasNext, videos.HasPrevious);
videosToReturn = videosToReturn.Select(v =>
{
var videoWithLinks = CreateLinksForVideo(v);
return(videoWithLinks);
});
var result = videosToReturn.ShapeData(parameters.Fields);
return(Ok(result));
}
}
