// acctabc.cpp -- bank account class methods
#include <iostream>
#include <cstring>
using namespace std;

#include "acctabc.h"

// Abstract Base Class
AcctABC::AcctABC(const char *s, long an, double bal)
{
    strncpy(fullName, s, MAX - 1);
    fullName[MAX - 1] = '\0';
    acctNum = an;
    balance = bal;
}

void AcctABC::Deposit(double amt)
{
    if (amt < 0)
        cout << "Negative deposit not allowed; "
             << "deposit is cancelled.\n";
    else
        balance += amt;
}

void AcctABC::Withdraw(double amt)
{
    balance -= amt;
}

// protected method
ios_base::fmtflags AcctABC::SetFormat() const
{
 // set up ###.## format
    ios_base::fmtflags initialState = 
        cout.setf(ios_base::fixed, ios_base::floatfield);
    cout.setf(ios_base::showpoint);
    cout.precision(2);
    return initialState;
}

// Brass methods
void Brass::Withdraw(double amt)
{
    if (amt < 0)
        cout << "Negative deposit not allowed; "
             << "withdrawal canceled.\n";
    else if (amt <= Balance())
       AcctABC::Withdraw(amt);
    else
        cout << "Withdrawal amount of $" << amt
             << " exceeds your balance.\n"
             << "Withdrawal canceled.\n";
}

void Brass::ViewAcct() const
{
   
    ios_base::fmtflags initialState = SetFormat();
    cout << "Brass Client: " << FullName() << endl;
    cout << "Account Number: " << AcctNum() << endl;
    cout << "Balance: $" << Balance() << endl;
    cout.setf(initialState);
}

// BrassPlus Methods
BrassPlus::BrassPlus(const char *s, long an, double bal,
           double ml, double r) : AcctABC(s, an, bal)
{
    maxLoan = ml;
    owesBank = 0.0;
    rate = r;
}

BrassPlus::BrassPlus(const Brass & ba, double ml, double r)
           : AcctABC(ba)   // uses implicit copy constructor
{
    maxLoan = ml;
    owesBank = 0.0;
    rate = r;
}

void BrassPlus::ViewAcct() const
{
    ios_base::fmtflags initialState = SetFormat();

    cout << "BrassPlus Client: " << FullName() << endl;
    cout << "Account Number: " << AcctNum() << endl;
    cout << "Balance: $" << Balance() << endl;
    cout << "Maximum loan: $" << maxLoan << endl;
    cout << "Owed to bank: $" << owesBank << endl;
    cout << "Loan Rate: " << 100 * rate << "%\n";
    cout.setf(initialState);
}

void BrassPlus::Withdraw(double amt)
{
    ios_base::fmtflags initialState = SetFormat();

    double bal = Balance();
    if (amt <= bal)
        AcctABC::Withdraw(amt);
    else if ( amt <= bal + maxLoan - owesBank)
    {
        double advance = amt - bal;
        owesBank += advance * (1.0 + rate);
        cout << "Bank advance: $" << advance << endl;
        cout << "Finance charge: $" << advance * rate << endl;
        Deposit(advance);
        AcctABC::Withdraw(amt);
    }
    else
        cout << "Credit limit exceeded. Transaction cancelled.\n";
    cout.setf(initialState); 
}