//Date類的實現
#include "date.h"
#include "datelegal.h"
#include "funs.h"

//-------------------------------------------------------------
Date::Date(){};

Date::Date(int y,int m,int d)
{
	Date::SetDate(y,m,d);
}

Date::Date(string sdate)
{
	Date::SetDate(sdate);
}

Date::Date(const Date& prim)
{
	year=prim.year;
	month=prim.month;
	day=prim.day;
}

Date::~Date() {};
void Date::ShowDate()
{
	cout << day << "/" << month << "/" << year <<endl;
}

void Date::SetDate(int y,int m,int d)
{
	DateLegal dateleg(y,m,d);
	if (dateleg.fine())
	{
		year=y;
		month=m;
		day=d;
	}
	else
	{
		cout << "您輸入的日期不合法,日期被設為默認值1900/01/01\n";
		year=1900;
		month=1;
		day=1;
	}
}

void Date::SetDate(string sdate)
{
	if ( !sdate2date(sdate,year,month,day) )
	{
		cout << "您輸入的日期不合法,日期被設為默認值:1900/01/01\n";
		year=1900;
		month=1;
		day=1;
		return;
	}
	DateLegal DLdate(year,month,day);
	if( !DLdate.fine() )
	{
		cout << "您輸入的日期不合法，日期被設為默認值：1900/01/01\n";
		year=1900;
		month=1;
		day=1;
		return;
	}	
}

void Date::NextDay()
{
	DateLegal dateleg(year,month,day+1);
	if ( !dateleg.day_legal() )
	{
		day=1;
		month++;
		dateleg.DLsetdate(year,month,day);	
	}
	else
	{
		day++;
	}

	if ( !dateleg.month_legal() )
	{
		month=1;
		year++;
		dateleg.DLsetdate(year,month,day);	
	}
	if( !dateleg.year_legal() )
	{
		cout <<"日期加一天后將會超過合法范圍,現將日期設為默認值:"
			 << "1900/01/01\n";
		Date::SetDate(1900,1,1);
	}
}
string Date::ToString()
{
	char ty[4];
	char tm[2];
	char td[2];
	return string(itoa(year,ty,10))+"/"+string(itoa(month,tm,10))+"/"
			   +string(itoa(day,td,10));
}
string Date::ToString(int type)
{
	char ty[4];
	char tm[2];
	char td[2];
	switch(type)
	{
	case 1:
		return Date::ToString();
		break;
	case 2:
		return string(itoa(year,ty,10))+"-"+string(itoa(month,tm,10))+"-"
			   +string(itoa(day,td,10));
		break;
	case 3:
		return string(itoa(year,ty,10))+"年"+string(itoa(month,tm,10))+"月"
				+string(itoa(day,td,10))+"日";
		break;
	default:
		return "Selected Tyep Error!";
	}
}