Update implemented check canFulfillOrder

CM2005 Object Oriented Programming/Topic 5/5.1.13/Wallet.cpp

@@ -1,4 +1,5 @@
 #include "Wallet.h"
+#include "CSVReader.h"
 
 Wallet::Wallet()
 {
@@ -68,3 +69,22 @@ std::string Wallet::toString()
   }
   return s;
 }
+
+bool Wallet::canFulfillOrder(OrderBookEntry order)
+{
+  std::vector<std::string> currs = CSVReader::tokenise(order.product, '/');
+  // ask
+  if(order.orderType == OrderBookType::ask)
+  {
+    double amount = order.amount;
+    std::string currency = currs[0];
+    return containsCurrency(currency, amount);
+  }
+  if(order.orderType == OrderBookType::bid)
+  {
+    double amount = order.amount * order.price;
+    std::string currency = currs[1];
+    return containsCurrency(currency, amount);
+  }
+  return false;
+}

CM2005 Object Oriented Programming/Topic 5/5.1.13/Wallet.h

@@ -2,6 +2,7 @@
 
 #include <string>
 #include <map>
+#include "OrderBookEntry.h"
 
 class Wallet
 {
@@ -16,6 +17,9 @@ class Wallet
     /** check if the wallet contains at least this much currency */
     bool containsCurrency(std::string type, double amount);
 
+    /** check if the wallet can cope with the ask or bid */
+    bool canFulfillOrder(OrderBookEntry order);
+
     /** generate a string representation of the wallet */
     std::string toString();