// Read from database
// Values are hardcoded to speed up the process.
// We can implement the same from any database like MsSQL/ MySQL/XML/Json/Excel/txt/csv files etc...
// This Class is Isolated based on the Unique Modifications and also for SRP (SOLID) Single Responsibility Principle
public stPromotion GetPromotionData(enumCartItem enumCartItem)
{
if (lstPromotion == null || lstPromotion.Count <= 0)
{
// Deaign pattern Like Singleton/Factory may be implement to get the same
lstPromotion = new List <stPromotion>();
lstPromotion.Add(new stPromotion()
{
enumCartItem = enumCartItem.A, UnitPrice = 50, DiscountUnits = 3, DiscountedPrice = 130
});
lstPromotion.Add(new stPromotion()
{
enumCartItem = enumCartItem.B, UnitPrice = 30, DiscountUnits = 2, DiscountedPrice = 45
});
lstPromotion.Add(new stPromotion()
{
enumCartItem = enumCartItem.C, UnitPrice = 20, DiscountUnits = 1, DiscountedPrice = 30
});
lstPromotion.Add(new stPromotion()
{
enumCartItem = enumCartItem.D, UnitPrice = 15, DiscountUnits = 1, DiscountedPrice = 30
});
}
//based on the search Key as parameter the data will be returned. one by one.
return(lstPromotion.Find(listItem => listItem.enumCartItem == enumCartItem));
}
// Add to cart any type of product unlimited in any order alsos.
public void AddtoCart(enumCartItem enumCartItem)
{
if (lstChar == null || lstChar.Count == 0)
{
lstChar = new List <enumCartItem>();
}
lstChar.Add(enumCartItem);
}
// Clean and Clear Code Isolation based on the Cart Products.
private int GetTotalCost(enumCartItem enumValue)
{
_dictPromotionCart.TryGetValue(enumValue, out objPromotion);
return(objPromotion.GetCostPrice(lstChar.Count(ListItem => ListItem == enumValue)));
}
