/// <summary>
/// Navigates to the specified <see cref="ProductItemInfo"/>.
/// </summary>
/// <param name="itemInfo">The <see cref="ProductItemInfo"/> to navigate to.</param>
public void NavigateTo(ProductItemInfo itemInfo)
{
if (this.IsNavigatingThroughHistory)
{
return;
}
historyIndex++;
history.RemoveRange(historyIndex, history.Count - historyIndex);
history.Add(itemInfo);
if (history.Count > MaxHistoryCount)
{
historyIndex--;
history.RemoveAt(0);
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
// PUBLIC PROCEDURES
/////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Returns the score for the specified <see cref="ProductItemInfo"/>.
/// </summary>
/// <param name="productItemInfo">The <see cref="ProductItemInfo"/> to examine.</param>
/// <param name="searchParts">The search parts.</param>
/// <returns>The score for the specified <see cref="ProductItemInfo"/>.</returns>
public static int Score(ProductItemInfo productItemInfo, string[] searchParts)
{
var score = 0;
const int maxParts = 10;
const int multiplierFactor = 30;
for (var searchPartIndex = Math.Min(maxParts, searchParts.Length) - 1; searchPartIndex >= 0; searchPartIndex--)
{
var searchPart = searchParts[searchPartIndex];
if (!string.IsNullOrEmpty(searchPart))
{
var titleScore = 0;
var titleIndex = productItemInfo.Title.IndexOf(searchPart, StringComparison.OrdinalIgnoreCase);
if (titleIndex >= 0)
{
titleScore = (Math.Max(0, 30 - titleIndex) + 1) * (int)Math.Pow(multiplierFactor, 3);
}
var categoryScore = 0;
var categoryIndex = productItemInfo.Category.IndexOf(searchPart, StringComparison.OrdinalIgnoreCase);
if (categoryIndex >= 0)
{
categoryScore = (Math.Max(0, 30 - categoryIndex) + 1) * (int)Math.Pow(multiplierFactor, 2);
}
var familyTitleScore = 0;
var familyTitleIndex = productItemInfo.ProductFamily.Title.IndexOf(searchPart, StringComparison.OrdinalIgnoreCase);
if (familyTitleIndex >= 0)
{
familyTitleScore = (Math.Max(0, 30 - familyTitleIndex) + 1) * multiplierFactor;
}
score += (maxParts - searchPartIndex) * (titleScore + categoryScore + familyTitleScore);
}
}
return(score);
}
