public ActionResult GetNew(DateTime firstDate, String token, Coordinates location = null)
{
CategoryPersonalizer personalize = new CategoryPersonalizer(context);
IQueryable<NewsFile> articles;
var request = NewsRequest.Construct(Guid.Parse(token), context, location);
firstDate.AddSeconds(1);
articles = personalize.GetNews(request).OrderByDescending(x => x.PubDate);
articles = articles.Where(x => x.PubDate > firstDate);
return new FeedResult(listToRss(articles.ToList(), personalize.Messages));
}
public static Func<Coordinates> CreateCoordinatesRandomFunc(String query, int KilometerRandomOffset)
{
var Coord = GeoCode(query);
return () =>
{
Random rnd = new Random();
var coordinates = new Coordinates { Latitude = Coord.Latitude, Longitude = Coord.Longitude };
double dy = rnd.Next(0, 100);
double dx = 100 - dy;
//111km == 1 deegre
float km = ((float)KilometerRandomOffset) / 111f;
coordinates.Latitude = coordinates.Latitude + (km * dy) / 100;
coordinates.Longitude = coordinates.Longitude + (km * dx) / 100;
return coordinates;
};
}
//
// GET: /Feed/
public ActionResult Index(DateTime? lastDate, String token = null, Coordinates location = null)
{
CategoryPersonalizer personalize = new CategoryPersonalizer(context);
IQueryable<NewsFile> articles;
if (token == null)
{
articles = context.NewsFiles.OrderByDescending(pub => pub.PubDate);
}
else
{
var request = NewsRequest.Construct(Guid.Parse(token), context, location);
articles = personalize.GetNews(request).OrderByDescending(x => x.PubDate);
}
if (lastDate != null)
{
articles = articles.Where(x => x.PubDate < lastDate);
}
return new FeedResult(listToRss(articles.Take(15).ToList(), personalize.Messages));
}
public String Click(DateTime ClickDate, String token, int? newsId, Coordinates coordinates = null)
{
if (ClickDate!=null&&token!=null&&newsId!=null)
{
var categoryId = context.NewsFiles.Where(x => x.NewsId == newsId.Value).Select(x => x.CategoryId).First();
Guid g = Guid.Parse(token);
var userId = context.Users.Where(x => x.AccessToken == g).First().UserId;
var click = new ClickCounter { UserId = userId, ClickDate = ClickDate, CategoryId = categoryId, NewsId = newsId.Value };
if(coordinates!=null && (coordinates.Latitude==0 && coordinates.Longitude==0)){
coordinates=null;
}
click.SetLocation(coordinates);
click.SetDayOfWeekAndTimeOfDay();
context.Clicks.Add(click);
context.SaveChanges();
return "Click saved";
}
return "Bad info";
}
public void SetLocation(Coordinates coord)
{
if (coord == null)
{
Longitude = null;
Latitude = null;
}
else
{
Longitude = coord.Longitude;
Latitude = coord.Latitude;
}
}
public static double DistanceInM(Coordinates c1, Coordinates c2)
{
return HaversineInM(c1.Latitude, c1.Longitude, c2.Latitude, c2.Longitude);
}
public RadiusFilter(int RadiusInKm, Coordinates GivenPosition)
{
this.RadiusInKm = RadiusInKm;
this.GivenPosition = GivenPosition;
}
public IQueryable<ClickCounter> FilterByClicksInGivenRadius(IQueryable<ClickCounter> clicks, double radiusInKm, Coordinates GivenPosition)
{
var l = clicks.Where(x => x.Latitude != null && x.Longitude != null).ToList();
var closest = l.Where(x => CoordinateHelper.DistanceInM(x.Coordinates, GivenPosition) < radiusInKm * 1000);
return closest.AsQueryable();
}
/// <summary>
///
/// </summary>
/// <param name="clicks">Click queryable</param>
/// <param name="N">Number of nearest clicks</param>
/// <param name="GivenPosition">Position to look fod</param>
/// <returns></returns>
public static IQueryable<ClickCounter> FilterByNNearestClicks(IQueryable<ClickCounter> clicks, int N, Coordinates GivenPosition)
{
var l = clicks.Where(x => x.Latitude != null && x.Longitude != null).ToList();
var closest = l.OrderBy(x => CoordinateHelper.DistanceInM(x.Coordinates, GivenPosition)).Take(N);
return closest.AsQueryable();
}
public static NewsRequest Construct(String username, MobilniPortalNovicContext12 context, Coordinates l = null)
{
var user = context.Users.Where(x => x.Username == username).First();
return new NewsRequest(user, l);
}
public static NewsRequest Construct(Guid token, MobilniPortalNovicContext12 context, Coordinates l = null)
{
var user = context.Users.Where(x => x.AccessToken == token).First();
return new NewsRequest(user, l);
}
public static NewsRequest Construct(int id, MobilniPortalNovicContext12 context, Coordinates l = null)
{
var user = context.Users.Find(id);
return new NewsRequest(user, l);
}
private NewsRequest(User u, Coordinates l)
{
TargetTime = DateTime.Now;
Location = l;
RadiusInKm = 10;
User = u;
}
