Date.cpp

/*
    Date.cpp
    Author: M00851681 
    Created: 4/1/24
    Updated: 14/1/24
*/

#include "Date.h"
#include <ctime>
#include <cmath>
#include <iostream>
#include <string>
#include <algorithm>

Date::Date()
{

}

Date::Date(int day, int month, int year)
{
    this->day = day;
    this->month = month;
    this->year = year;
}

int Date::getDay()
{
    return day;
}

int Date::getMonth()
{
    return month;
}

int Date::getYear()
{
    return year;
}

void Date::addDays(int numberDays){
    std::array<int, 12> monthDays = {31,28,31,30,31,30,31,31,30,31,30,31};
    for (int a = 0; a < numberDays; ++a){
        day = day + 1;

        if (month == 2 && ((year % 4 == 0 && year % 100 != 0) 
            || (year % 400 == 0)))
            {
                if(day > 29){
                    day = 1;
                    month = month + 1;
                }
                else if (day > monthDays[month])
                {
                    day = 1;
                    month = month + 1;
                    if (month > 12)
                    {
                        month = 1;
                        year = year + 1;
                    }
                }
            }

    }

}

Date Date::getCurrentDate()
{
    std::time_t current_time = std::time(nullptr);
    tm* time = std::localtime(&current_time);

    int day = time->tm_mday;
    // month 0-11
    int month = time->tm_mon + 1;
    // years since 1900
    int year = time->tm_year + 1900;
    
    return Date(day, month, year);
}

bool Date::operator>(Date& other)
{
    if (year > other.year)
    {
        return true;
    }
    else if (year == other.year)
    {
        if (month > other.month)
        {
            return true;
        }
        else if (month == other.month)
        {
            if (day > other.day)
            {
                return true;
            }
        }
    }
    return false;
}

int Date::totalDays()
{
    std::array<int, 12> monthDays = {31,28,31,30,31,30,31,31,30,31,30,31};
    int totalCount = day;

    for (int mon = 0; mon < month - 1; ++mon)
    {
        totalCount = totalCount + monthDays[mon];
    }

    if(month > 2 && ((year % 4 == 0 && year % 100 != 0) || (year % 400 ==0)))
    {
        totalCount = totalCount + 1;
    }

    totalCount = totalCount + (year * 365);
    totalCount = totalCount + ((year / 4) - (year / 100) + (year / 400));

    return totalCount;
}

int Date::daysAfter(Date& other)
{
    return this->totalDays() - other.totalDays() ;
}

std::ostream& operator<<(std::ostream& out, Date& date)
{
    out << date.getDay() << "/" << date.getMonth() << "/" << date.getYear();
    return out;
}