// Kevin Van Wilder
// Rolnr: 78363
// Taak 1

#include <iostream>
#include <string>
#include <sstream>
#include "mytime.h"

const int SecondsInDay(86400);
const int SecondsInHour(3600);
const int SecondsInMinute(60);


// Zeller Algorithm
// thanks to http://www.vectorbd.com/bfd/c/weekday.c
int
DayOfTheWeek(int date, int month, int year) {
        int day(0);
        int yr(0);
        int mn(0);
        int n1(0);
        int n2(0);

  #define ZELLER_OFFSET -1

        yr = year;
        mn = month;

        if (mn < 3) {
                mn += 12;
                yr -= 1;
        }
        n1 = (26 * (mn + 1)) / 10;
        n2 = (int) ((125 * (long) yr) / 100);

        day = ((date + n1 + n2 - (yr / 100) + (yr / 400) + ZELLER_OFFSET) % 7);
        return day;
}


int
SecondsInYear(int year) {
        if (year % 4)
                return 365 * SecondsInDay;
        else
                return 366 * SecondsInDay;
}

int
DaysInMonth(int month, int year) {
        switch (month) {
                case 1: case 3: case 5: case 7:
                case 8: case 10: case 12:
                        return 31;
                        break;
                case 2:
                        if (year % 4)
                                return 28;
                        else
                                return 29;
                        break;
                default:
                        return 30;
        }
}

int
SecondsInMonth(int month, int year) {
        return DaysInMonth(month, year) * SecondsInDay;
}

void
ConvertTime(time_t UnixTime, int date_output, int time_output) {

        // Find the Date
        //
                mytime Time;
                // years
                while ( UnixTime >= SecondsInYear(Time.year) ) {
                        UnixTime -= SecondsInYear(Time.year);
                        Time.year++;
                }
                // months
                while ( UnixTime >= SecondsInMonth(Time.month, Time.year) ) {
                        UnixTime -= SecondsInMonth(Time.month, Time.year);
                        Time.month++;
                }
                // days
                while ( UnixTime >= SecondsInDay ) {
                        UnixTime -= SecondsInDay;
                        Time.day++;
                }
                // hours
                while ( UnixTime >= SecondsInHour ) {
                        UnixTime -= SecondsInHour;
                        Time.hour++;
                }
                // minutes
                while ( UnixTime >= SecondsInMinute ) {
                        UnixTime -= SecondsInMinute;
                        Time.minute++;
                }
                // seconds
                Time.second = UnixTime;

        // Select the Output method
        //

        stringstream temp;

        char *monthArray [12] = {"januari", "februari", "maart", "april", "mei", "juni",
                                                                                                         "juli", "augustus", "september", "oktober", "november",
                                                                                                         "december"};
        char *dayArray [7] = {"zondag", "maandag", "dinsdag", "woensdag",
                                                                                                "donderdag", "vrijdag", "zaterdag", "zondag"};

        switch (date_output) {
                case 1:
                        temp << Time.day << "/" << Time.month << "/" << Time.year;
                        break;
                case 2:
                        temp << Time.day << " " << monthArray[Time.month] << " " << Time.year;
                        break;
                case 3:
                        temp << dayArray[DayOfTheWeek(Time.day, Time.month, Time.year)] << " " << Time.day << " " <<
                                         monthArray[Time.month] << " " << Time.year;
                        break;
                default:
                        temp << "";
        }

        switch (time_output) {
        case 1:
                temp << " " << Time.day << "/" << Time.month << "/" << Time.year;
                break;
        case 2:
                temp << " " << Time.day << " " << monthArray[Time.month] << " " << Time.year;
                break;
        case 3:
                temp << " " << dayArray[DayOfTheWeek(Time.day, Time.month, Time.year)] << " " << Time.day << " " << monthArray[Time.month] << " " << Time.year;
                break;
        default:
                temp << "";
        }

        return temp.str();
}

int
main() {

        std::cout << "1128626312" << std::endl;
        std::cout << ConvertTime(1128626312,1,1) << std::endl;

        return 0;
}