static void authorizeTransaction(String command) {
if (command.split(" ").length < 3) {
System.out.print("\tError! Not enough arguments for command.\n");
return;
}
String accNum = command.split(" ")[1];
double amount =
-Double.parseDouble(
command
.split(" ")[
2]); // Invert the amount because - means add to credit and + means take away from
// credit
CreditAccount[] records = loadData();
for (int i = 0; i < records.length; i++) {
if (records[i].getAccountNumber().equals(accNum)) {
if (amount > 0) {
if (records[i].getMaxLimit() == records[i].getAvailable())
System.out.print("\tError! Authorization attempt failed. Credit is already max.\n");
else if (records[i].getAvailable() + amount > records[i].getMaxLimit()) {
records[i].setAvailable(records[i].getAvailable());
System.out.print(
"\tWarning! Authorization granted. Attempted to raise credit above max.\n");
System.out.printf(
"\tAccount %s|Transaction %.2f|Available Credit %.2f\n",
accNum, amount, records[i].getAvailable());
} else {
records[i].setAvailable(records[i].getAvailable() + amount);
System.out.print("\tAuthorization granted.\n");
System.out.printf(
"\tAccount %s|Transaction %.2f|Available Credit %.2f\n",
accNum, amount, records[i].getAvailable());
}
} else {
if (amount + records[i].getAvailable() < 0)
System.out.print(
"\tError! Authorization denied. Attempted to use more credit than available .\n");
else {
records[i].setAvailable(amount + records[i].getAvailable());
System.out.print("\tAuthorization granted.\n");
System.out.printf(
"\tAccount %s|Transaction %.2f|Available Credit %.2f\n",
accNum, amount, records[i].getAvailable());
}
}
saveData(records);
return;
}
}
System.out.print("\tError! No record found for account " + accNum + ".\n");
}
static void createAccount(String command) {
if (command.split(" ").length < 2) {
System.out.print("\tError! Not enough arguments for command.\n");
return;
}
String issuerSym = command.split(" ")[1].toUpperCase();
String accountNum;
double maxCredit;
CreditAccount account;
CreditAccount[] oldRecords;
CreditAccount[] newRecords;
if (issuerSym.equals("AE")) accountNum = "3";
else if (issuerSym.equals("V")) accountNum = "4";
else if (issuerSym.equals("MC")) accountNum = "5";
else if (issuerSym.equals("DIS")) accountNum = "6";
else if (issuerSym.equals("DINE")) accountNum = "7";
else {
System.out.print("\tError! Issuer symbol [" + issuerSym + "] is not valid.\n");
return;
}
for (int i = 0; i < 15; i++) accountNum += Integer.toString((int) (Math.random() * 10));
maxCredit = Integer.parseInt(accountNum.substring(15)) >= 4 ? 1000.0f : 500.0f;
account = new CreditAccount(accountNum, maxCredit);
account.setIssuerSymbol(issuerSym.toUpperCase());
account.setValid(true);
oldRecords = loadData();
newRecords = new CreditAccount[oldRecords.length + 1];
for (int i = 0; i < oldRecords.length; i++) newRecords[i] = oldRecords[i];
newRecords[oldRecords.length] = account;
saveData(newRecords);
System.out.print(
"\tCreated new credit card account ["
+ issuerSym.toUpperCase()
+ "]:\tAccount Number "
+ accountNum
+ ", Credit Limit : "
+ account.getMaxLimit()
+ "\n");
}
