/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Champlain College SDEV-340-81
 *
 * C++ Week 2: Assignment (second semester) - Application of OOP  (2020/05/24)
 *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *
 * This is a demonstration of OOP in C++
 * More about Classes and Object-Oriented Programming - Chapter 11 (Page 810)
 * Programming Challenge (2. Day of the Year) Converting the day of the year to a date
 *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *
 * Written by Llewellyn van der Merwe <llewellyn.vandermerw@mymail.champlain.edu>, May 2020
 * Copyright (C) 2020. All Rights Reserved
 * License GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
 *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

// internal classes
#include "DayToDate.h"
// libraries
#include <iostream>
#include <string>

using namespace std;
using namespace vdm;

// constructor that takes an int
DayToDate::DayToDate(int day) : day(day) {
    // do a sanity check here
    if (day <= 365 && day >= 1) {
        // initialize class once we have int set
        DayToDate::initialize();
    } else {
        // set the warning (this should never happen, but if someone mess-up)
        cout << "Only days between 1 and 365 are allowed!";
    }
};

// initialize the dateString
void DayToDate::initialize() {
    // initialize the month
    DayToDate::setMonth();
    // initialize the day
    DayToDate::setDay();
    // little bit of fun :)
    if (123 == DayToDate::day) {
        DayToDate::dateString += " (My wife's birthday!)";
    } else if (159 == DayToDate::day) {
        DayToDate::dateString += " (My birthday!)";
    }
};

// get the key
int DayToDate::getKey() {
    // loop over the 12 months (keys)
    for (int key = 0; key < 12; key++) {
        // if the day is less or equal
        if (DayToDate::day <= DayToDate::keys[key]) {
            return key;
        }
    }
    return 0;
};

// set the day's ordinal suffix
// https://en.wikipedia.org/wiki/English_numerals#Ordinal_numbers
string DayToDate::getOrdinal(int day) {
    if (((day % 100) >= 11) && ((day % 100) <= 13)) {
        return to_string(day) + "th";
    } else {
        return to_string(day) + DayToDate::ends[day % 10];
    }
}

// set the day
void DayToDate::setDay() {
    // get the day
    DayToDate::dateString += " " + DayToDate::getOrdinal(
            DayToDate::day <= 31 ? DayToDate::day : DayToDate::day - DayToDate::keys[DayToDate::getKey() - 1]);
}

// set the month
void DayToDate::setMonth() {
    // get the month
    DayToDate::dateString = DayToDate::months[DayToDate::getKey()];
};

// return the converted number string
string DayToDate::print() const {
    return DayToDate::dateString;
};

// Enable class to have toString ability
// https://stackoverflow.com/a/1549937/1429677
ostream &vdm::operator<<(ostream &outputStream, const DayToDate &dayTD) {
    return outputStream << dayTD.print() << endl;
}