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#include "Date.h"
#include <iostream>
#include <iomanip>
using namespace std;
bool Date::isLeapYear() const
{
if (year <= 1916)
return year % 4 == 0;
return ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
}
void Date::validateDateByChangedCalendars()
{
if (year == 1916 && month == 4 && day >= 1 && day <= 13) // invalid days due to change in callendars
day = 15;
}
Date::Date(size_t day, size_t month, size_t year)
{
setYear(year);
setMonth(month);
setDay(day);
}
size_t Date::getDay() const
{
return day;
}
size_t Date::getMonth() const
{
return month;
}
size_t Date::getYear() const
{
return year;
}
void Date::setYear(size_t year)
{
this->year = year;
if (isLeapYear())
MAX_DAYS[1] = 29;
else
MAX_DAYS[1] = 28;
isModified = true;
validateDateByChangedCalendars();
}
void Date::setMonth(size_t month)
{
if (month > 12)
{
month = 1;
}
this->month = month;
if (day > MAX_DAYS[month - 1])
day = MAX_DAYS[month - 1];
isModified = true;
validateDateByChangedCalendars();
}
void Date::setDay(size_t day)
{
if (day > MAX_DAYS[month - 1])
{
day = 1;
}
this->day = day;
isModified = true;
validateDateByChangedCalendars();
}
void Date::print() const
{
std::cout << setw(2) << setfill('0') << day << "." << setw(2) << setfill('0') << month << ".";
std::cout << setw(4) << setfill('0') << year;
}
void Date::goToNextDay()
{
if (areEqual(Date(31, 03, 1916)))
{
setDay(14);
setMonth(04);
return;
}
setDay(day + 1);
if (day == 1)
{
setMonth(month + 1);
if (month == 1)
setYear(year + 1);
}
}
bool Date::areEqual(const Date& other) const
{
return year == other.year && month == other.month && day == other.day;
}
int Date::getDayOfWeek() const
{
if (!isModified)
return dayOfWeek;
Date d(1, 1, 1);
int day = 5;
while (!areEqual(d))
{
d.goToNextDay();
(day += 1) %= 7;
}
dayOfWeek = day + 1;
isModified = false;
return dayOfWeek;
}
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