public void TestCompund_ILLegal()
{
// cant buy more than 10 prods and cant buy more than 1 of item 2
cart.AddProduct(store, 1, 7, false);
cart.AddProduct(store, 2, 2, false);
PurchaseBasket basket = cart.GetBasket(store);
store.ActiveStore = false;
PurchasePolicy purchaseplcMinItemsAtBasket = new BasketPurchasePolicy(minItems: 12, pre: preConditionsDict[CommonStr.PurchasePreCondition.MinItemsAtBasket]);
PurchasePolicy purchaseplcMaxItemAtBasket = new BasketPurchasePolicy(maxItems: 10, pre: preConditionsDict[CommonStr.PurchasePreCondition.MaxItemsAtBasket]);
CompundPurchasePolicy compund = new CompundPurchasePolicy(CommonStr.PurchaseMergeTypes.AND, null);
compund.add(purchaseplcMinItemsAtBasket);
compund.add(purchaseplcMaxItemAtBasket);
bool eligiblePurchase = compund.IsEligiblePurchase(basket);
Assert.AreEqual(false, eligiblePurchase);
}
public static PurchasePolicy Parse(string text)
{
bool simplePolicy = prefixes.Any(prefix => text.StartsWith(prefix));
if (simplePolicy)
{
if (productPurchasePolicyMinRegex.IsMatch(text)) // (p_min:precondition:productId:minAmount)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
int productId = Convert.ToInt32(constructs[2]);
int minAmount = Convert.ToInt32(constructs[3]);
return(new ProductPurchasePolicy(new PurchasePreCondition(precondition), productId, minAmount));
}
else if (productPurchasePolicyMaxRegex.IsMatch(text)) // (p_max:precondition:productId:maxAmount)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
int productId = Convert.ToInt32(constructs[2]);
int maxAmount = Convert.ToInt32(constructs[3]);
return(new ProductPurchasePolicy(maxAmount, new PurchasePreCondition(precondition), productId));
}
else if (basketPurchasePolicyRegex.IsMatch(text)) // (b:precondition)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
return(new BasketPurchasePolicy(new PurchasePreCondition(precondition)));
}
else if (basketPurchasePolicyMaxBasketRegex.IsMatch(text)) // (b_maxBasket:precondition:maxBasketPrice)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
double maxBasketPrice = Convert.ToDouble(constructs[2]);
return(new BasketPurchasePolicy(new PurchasePreCondition(precondition), maxBasketPrice));
}
else if (basketPurchasePolicyMinBasketRegex.IsMatch(text)) // (b_minBasket:precondition:minBasketPrice)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
double minBasketPrice = Convert.ToDouble(constructs[2]);
return(new BasketPurchasePolicy(minBasketPrice, new PurchasePreCondition(precondition)));
}
else if (basketPurchasePolicyMaxItemsRegex.IsMatch(text)) // (b_maxItems:precondition:maxItems)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
int maxItems = Convert.ToInt32(constructs[2]);
return(new BasketPurchasePolicy(new PurchasePreCondition(precondition), maxItems));
}
else if (basketPurchasePolicyMinItemsRegex.IsMatch(text)) // (b_minItems:precondition:minItems)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
int minItems = Convert.ToInt32(constructs[2]);
return(new BasketPurchasePolicy(minItems, new PurchasePreCondition(precondition)));
}
else if (systemPurchasePolicyRegex.IsMatch(text)) // (s:preCondition:storeID)
{
string[] constructs = text.Split(':');
int preCondition = Convert.ToInt32(constructs[1]);
int storeID = Convert.ToInt32(constructs[2]);
return(new SystemPurchasePolicy(new PurchasePreCondition(preCondition), storeID));
}
else if (userPurchasePolicyRegex.IsMatch(text)) // (u:precondition)
{
string[] constructs = text.Split(':');
int precondition = Convert.ToInt32(constructs[1]);
//string username = constructs[2];
return(new UserPurchasePolicy(new PurchasePreCondition(precondition)));
}
}
else // compound purchase policy
{
int counter = 0;
string curr = "";
string[] constructs = Regex.Split(text, "(XOR|OR|AND)");
if (constructs.Length <= 1)
{
return(new ProductPurchasePolicy(new PurchasePreCondition(-1), -1, -1));
}
string opStr = constructs[1];
int op = opStr == "XOR" ? 0 : opStr == "OR" ? 1 : opStr == "AND" ? 2 : -1;
if (op == -1)
{
return(new ProductPurchasePolicy(new PurchasePreCondition(-3), -3, -3));
}
string restText = text.Substring(opStr.Length + 2, text.Length - 1 - opStr.Length - 2);
List <string> policies = new List <string>();
for (int i = 0; i < restText.Length; i++)
{
if (restText[i] == '(')
{
if (counter == 0) // shift from 0 to 1 -> new element
{
curr = "";
}
counter++;
}
else if (restText[i] == ')')
{
if (counter == 1) // shift from 1 to 0 -> finish the current element
{
curr += restText[i];
policies.Add(curr);
curr = "";
}
counter--;
}
else if (restText[i] == ' ' && counter == 0)
{
if (!policies.Contains(curr) && curr != "")
{
policies.Add(curr);
curr = "";
}
}
if (!(counter == 0 || curr == ")"))
{
curr += restText[i];
}
if (counter == 0 && restText[i] != ')' && restText[i] != '(' && restText[i] != ' ')
{
curr += restText[i];
}
}
if (curr != "")
{
policies.Add(curr);
}
if (counter != 0)
{
return(new ProductPurchasePolicy(new PurchasePreCondition(-1), -1, -1));
}
List <PurchasePolicy> children = new List <PurchasePolicy>();
foreach (string policy in policies)
{
PurchasePolicy purchasePolicy = Parse(policy);
if (CheckPurchasePolicy(purchasePolicy) == false) // this indicates an error!
{
return(new ProductPurchasePolicy(new PurchasePreCondition(-2), -2, -2));
}
else
{
children.Add(purchasePolicy);
}
}
PurchasePolicy compoundPolicy = new CompundPurchasePolicy(op, children);
return(compoundPolicy);
}
return(new ProductPurchasePolicy(new PurchasePreCondition(-4), -4, -4));
}
