feat: added currency converter, AuditLog unfinished

Author: XavierCruz5106

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/AuditLog.java

@@ -1,6 +1,8 @@
 package com.codedifferently.lesson17.bank;
 
 import com.codedifferently.lesson17.bank.exceptions.AccountNotFoundException;
+import com.codedifferently.lesson17.bank.exceptions.UnsupportedCurrencyException;
+
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
@@ -44,10 +46,12 @@ public Set<CheckingAccount> findAccountsByCustomerId(UUID customerId) {
    *
    * @param accountNumber The account number.
    * @param amount The amount to deposit.
+   * @throws UnsupportedCurrencyException
    */
-  public void depositFunds(String accountNumber, double amount) {
+  public void depositFunds(String accountNumber, double amount, String currencyType) throws UnsupportedCurrencyException {
     CheckingAccount account = getAccountOrThrow(accountNumber);
-    account.deposit(amount);
+    double convertedAmount = CurrencyConverter.convert(amount, currencyType, "USD");
+    account.deposit(convertedAmount);
   }
 
   /**

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/BankAtm.java

@@ -17,6 +17,4 @@ public BusinessCheckingAccount(String accountNumber, Set<Customer> owners, doubl
     isActive = true;
   }
 
-
-
 }

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/BusinessCheckingAccount.java

@@ -0,0 +1,22 @@
+package com.codedifferently.lesson17.bank;
+
+import java.util.Map;
+
+import com.codedifferently.lesson17.bank.exceptions.UnsupportedCurrencyException;
+
+public class CurrencyConverter {
+  private static final Map<String, Double> exchangeRates = Map.of(
+      "USD", 1.0,
+      "EUR", 0.9,
+      "GBP", 0.8,
+      "JPY", 110.0
+  );
+
+  public static double convert(double amount, String fromCurrency, String toCurrency) throws UnsupportedCurrencyException {
+      if (!exchangeRates.containsKey(fromCurrency) || !exchangeRates.containsKey(toCurrency)) {
+          throw new UnsupportedCurrencyException("Unsupported currency type.");
+      }
+      double amountInUSD = amount / exchangeRates.get(fromCurrency);
+      return amountInUSD * exchangeRates.get(toCurrency);
+  }
+}

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/CurrencyConverter.java

@@ -10,7 +10,7 @@ public class Customer {
   private final UUID id;
   private final String name;
   private final Set<CheckingAccount> accounts = new HashSet<>();
-  private boolean isBusiness;
+  private boolean isBusiness = false;
 
   /**
    * Creates a new customer.
@@ -24,6 +24,11 @@ public Customer(UUID id, String name, boolean isBusiness) {
     this.isBusiness = isBusiness;
   }
 
+  public Customer(UUID id, String name) {
+    this.id = id;
+    this.name = name;
+  }
+
   /**
    * Gets the ID of the customer.
    *

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/Customer.java

@@ -19,5 +19,7 @@ public MoneyOrder(double amount, CheckingAccount account) {
     }
     this.amount = amount;
     this.account = account;
+
+    account.withdraw(amount);
   }
 }

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/MoneyOrder.java

@@ -0,0 +1,9 @@
+package com.codedifferently.lesson17.bank.exceptions;
+
+public class UnsupportedCurrencyException extends Exception {
+  public UnsupportedCurrencyException() {}
+
+  public UnsupportedCurrencyException(String message) {
+    super(message);
+  }
+}