// GET: Recommendation
public ActionResult Index()
{
double min = int.MaxValue;
var closestUserName = "";
string userName = HttpContext.Session.GetString("ConnectedUserId");
if (String.IsNullOrEmpty(userName))
{
return(RedirectToAction("Index", "Error", new { error = string.Format("Could not find current user") }));
}
try
{
var user = _userBl.GetById(userName);
// dictionary of score of user
var usersScore = _commentBl.GetAll().GroupBy(c => c.Publisher.UserName)
.Select(g => new
{
g.Key,
Value = g.Sum(x => x.Rating)
}).ToDictionary(x => x.Key, x => x.Value);
// get current user score
var userScore = usersScore[userName];
usersScore.Remove(userName);
// get closest user for current user
foreach (var item in usersScore)
{
if (min > Math.Abs(userScore - item.Value))
{
min = userScore - item.Value;
closestUserName = item.Key;
}
}
var allProducts = _productBl.GetAllProducts();
var comment = allProducts.FindAll(p => p.Comments.Any(c => c.Publisher != user && c.Publisher.UserName == closestUserName)).SelectMany(p => p.Comments).ToList().FindAll(c => c.Publisher.UserName == closestUserName).OrderByDescending(c => c.Rating).FirstOrDefault();
if (comment == null)
{
var highestComment = allProducts.SelectMany(p => p.Comments).ToList().OrderByDescending(c => c.Rating).FirstOrDefault();
var recommendedHeightestProduct = allProducts.First(p => p.Comments.ToList().Contains(comment));
return(View(recommendedHeightestProduct));
}
var recommendedProduct = allProducts.First(p => p.Comments.ToList().Contains(comment));
return(View(recommendedProduct));
}
catch (Exception e)
{
return(RedirectToAction("Index", "Error", new { error = string.Format("an error while get recommendation please try again") }));
}
}
// GET: Catalog
public ActionResult Index()
{
return(View(_productBl.GetAllProducts()));
}
public IActionResult Index()
{
ViewBag.Categories = Enum.GetValues(typeof(Category));
return(View(_productBl.GetAllProducts()));
}