Transaction.h

#include "Transaction.h"

#include <iomanip>
#include <limits>
#include <ctime>

#define DESCRIPTION_WIDTH 20
#define DATE_WIDTH        10
#define AMOUNT_WIDTH       9

/** Transaction class is fairly self explanatory
 * It holds a description of the transaction, the amount,
 * and date.
 *  Overloads io operators as needed to read/write to/from stdio/file
 *  Overloads comparison operators as needed to determine if a Transaction
 * is another Transaction
**/

Transaction::Transaction(const std::string& d, const double a,
                         const unsigned da, const unsigned mo, const unsigned yr)
    : description(d), amount(a), day(da), month(mo), year(yr) { }

std::istream& operator>>(std::istream& in, Transaction& t) {
    std::string des;
    double amt;
    unsigned day, month, year;
    char today;
    struct tm* date;

    std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
    std::cout << "Descriptio: ";
    std::getline(in, des, '\n');
    std::cout << "Quantus: ";
    in >> amt;
    std::cout << "Hodie (y/n): ";
    std::cin  >> today;
    if(today == 'n') {
        std::cout << "Dies Mensa Annus: ";
        in >> day >> month >> year;
    }
    else {
        time_t t = time(0);
        date  = localtime(&t);
        day   = date->tm_mday;
        month = date->tm_mon + 1;
        year  = date->tm_year + 1900;
    }

    t = Transaction(des, amt, day, month, year);

    in.get();

    return in;
}

std::ostream& operator<<(std::ostream& out, const Transaction& t) {
    out.width(DESCRIPTION_WIDTH); out << std::left    << t.GetDescription();
    out.width(AMOUNT_WIDTH);      out << std::left    << t.GetAmount();
    out.width(DATE_WIDTH);        out << std::right   << t.GetDay() << '/'
                                      << t.GetMonth() << '/' << t.GetYear();
    return out;
}

std::ofstream& operator<<(std::ofstream& of, const Transaction& t) {
    of << t.GetDescription() << '\n'
       << t.GetAmount()      << ' '
       << t.GetDay()         << ' '
       << t.GetMonth()       << ' '
       << t.GetYear()        << '\n';

    return of;
}

std::ifstream& operator>>(std::ifstream& in, Transaction& t) {
    std::string des;
    double amt;
    unsigned day, month, year;

    std::getline(in, des, '\n');
    in >> amt >> day >> month >> year;

    t = Transaction(des, amt, day, month, year);

    in.get();

    return in;
}

bool operator==(const Transaction& left, const Transaction& right) {
    if(!left.GetDescription().compare(right.GetDescription())&&
       left.GetDay()         == right.GetDay()               &&
       left.GetMonth()       == right.GetMonth()             &&
       left.GetYear()        == right.GetYear()               ) {

        return true;
    }
    else {
        return false;
    }
}

bool operator<(const Transaction& left, const Transaction& right) {
    if(left.GetYear() > right.GetYear()) {
        return false;
    }
    else
    if(left.GetYear() < right.GetYear()) {
        return true;
    }
    else {
        if(left.GetMonth() > right.GetMonth()) {
            return false;
        }
        else
        if(left.GetMonth() < right.GetMonth()) {
            return true;
        }
        else {
            if(left.GetDay() > right.GetDay()) {
                return false;
            }
            else
            if(left.GetDay() < right.GetDay()) {
                return true;
            }
        }
    }
    return false;
}