private Dictionary <string, List <PromoModels.MarkedItem> > ApplyPromo(PromoModels.Promo promo, Dictionary <string, List <PromoModels.MarkedItem> > groupedItems)
{
do
{
var appliedBuys = ApplyBuys(groupedItems, promo);
if (!appliedBuys.Applied)
{
break;
}
groupedItems = appliedBuys.GroupItems;
groupedItems = ApplyGets(groupedItems, promo);
} while (true);
return(groupedItems);
}
private IEnumerable <PromoModels.Promo> GetDefaultPromos()
{
var promo1 = new PromoModels.Promo
{
Id = "promo1",
Description = "3 of A's for 130",
Buys = new List <PromoModels.Buy>
{
new PromoModels.Buy()
{
Category = "A",
Count = 3
}
},
Gets = new List <PromoModels.Get>
{
new PromoModels.Get()
{
Category = "A",
All = true,
Off = new PromoModels.Off()
{
Discount = new PromoModels.Discount()
{
Percentage = 0
},
Fixed = new PromoModels.Fixed()
{
Price = 130
}
}
}
}
};
var promo2 = new PromoModels.Promo
{
Id = "promo1",
Description = "B",
Buys = new List <PromoModels.Buy>
{
new PromoModels.Buy()
{
Category = "B",
Count = 2
}
},
Gets = new List <PromoModels.Get>
{
new PromoModels.Get()
{
Category = "",
All = true,
Off = new PromoModels.Off()
{
Discount = new PromoModels.Discount()
{
Percentage = 0
},
Fixed = new PromoModels.Fixed()
{
Price = 45
}
}
}
}
};
var promo3 = new PromoModels.Promo
{
Id = "promo1",
Description = "",
Buys = new List <PromoModels.Buy>
{
new PromoModels.Buy()
{
Category = "C",
Count = 1
},
new PromoModels.Buy()
{
Category = "D",
Count = 1
}
},
Gets = new List <PromoModels.Get>
{
new PromoModels.Get()
{
Category = "",
All = true,
Off = new PromoModels.Off()
{
Discount = new PromoModels.Discount()
{
Percentage = 0
},
Fixed = new PromoModels.Fixed()
{
Price = 30
}
}
}
}
};
return(new List <PromoModels.Promo> {
promo1, promo2, promo3
});
}
private AppliedBuy ApplyBuy(PromoModels.Buy buy, Dictionary <string, List <PromoModels.MarkedItem> > groupedItems, PromoModels.Promo promo)
{
if (!groupedItems.TryGetValue(buy.Category, out List <PromoModels.MarkedItem> value))
{
return(new AppliedBuy {
Applied = false, GroupItems = groupedItems
});
}
var matchedItems = new List <PromoModels.MarkedItem>();
foreach (var item in groupedItems[buy.Category])
{
var isMarkedBuy = item.MarkedBuys.TryGetValue(promo.Id, out bool val1);
var isMarkedGet = item.MarkedGets.TryGetValue(promo.Id, out float val2);
if (!isMarkedBuy && !isMarkedGet)
{
matchedItems.Add(item);
}
}
if (matchedItems.Count < buy.Count)
{
return(new AppliedBuy {
Applied = false, GroupItems = groupedItems
});
}
groupedItems = MarkBuyItems(groupedItems, buy, promo);
return(new AppliedBuy {
Applied = true, GroupItems = groupedItems
});
}
private Dictionary <string, List <PromoModels.MarkedItem> > MarkBuyItems(Dictionary <string, List <PromoModels.MarkedItem> > groupedItems, PromoModels.Buy buy, PromoModels.Promo promo)
{
var markCount = 0;
for (int i = 0; i < groupedItems[buy.Category].Count; i++)
{
var item = groupedItems[buy.Category][i];
if (markCount == buy.Count)
{
break;
}
var isMarkedBuy = item.MarkedBuys.TryGetValue(promo.Id, out bool val1);
var isMarkedGet = item.MarkedGets.TryGetValue(promo.Id, out float val2);
if (!isMarkedBuy && !isMarkedGet)
{
groupedItems[buy.Category][i].MarkedBuys[promo.Id] = true;
markCount += 1;
}
}
return(groupedItems);
}
private Dictionary <string, List <PromoModels.MarkedItem> > ApplyGets(Dictionary <string, List <PromoModels.MarkedItem> > groupedItems, PromoModels.Promo promo)
{
foreach (var get in promo.Gets)
{
groupedItems = ApplyGet(get, groupedItems, promo);
}
return(groupedItems);
}
private Dictionary <string, List <PromoModels.MarkedItem> > ApplyGet(PromoModels.Get get, Dictionary <string, List <PromoModels.MarkedItem> > groupedItems, PromoModels.Promo promo)
{
if (!groupedItems.TryGetValue(get.Category, out List <PromoModels.MarkedItem> val))
{
return(groupedItems);
}
groupedItems = MarkGetItems(groupedItems, get, promo);
return(groupedItems);
}
private Dictionary <string, List <PromoModels.MarkedItem> > MarkGetItems(Dictionary <string, List <PromoModels.MarkedItem> > groupedItems, PromoModels.Get get, PromoModels.Promo promo)
{
var markCount = 0;
for (int i = 0; i < groupedItems[get.Category].Count; i++)
{
var item = groupedItems[get.Category][i];
if (get.All == false && markCount == get.Count)
{
break;
}
var isMarkedBuy = item.MarkedBuys.TryGetValue(promo.Id, out bool val1);
var isMarkedGet = item.MarkedGets.TryGetValue(promo.Id, out float val2);
if (!isMarkedBuy && !isMarkedGet)
{
groupedItems[get.Category][i].MarkedGets[promo.Id] = ComputeOffPrice(item.Item.Price, get.Off);
markCount += 1;
}
}
return(groupedItems);
}
private AppliedBuys ApplyBuys(Dictionary <string, List <PromoModels.MarkedItem> > groupedItems, PromoModels.Promo promo)
{
var applied = true;
foreach (var buy in promo.Buys)
{
var appliedBuy = ApplyBuy(buy, groupedItems, promo);
applied = applied && appliedBuy.Applied;
}
return(new AppliedBuys {
Applied = applied, GroupItems = groupedItems
});
}