/*
 * Clock app for Project One
 * Clock.h header file
 *
 * Date: 2022/03/16
 * Author: Cody Cook
 */

#pragma once		// only read this file once
#include "Main.h"	// grab clearScreen function
#include <iostream> // use of cin, cout
#include <string>	// use of string
#include <cstring>	// use of string functions

using namespace std;

unsigned int hour;	 // the clock's hour
unsigned int minute; // the clock's minute
unsigned int second; // the clock's second

string twoDigitString(unsigned int n)
{
	/// Convert an unsigned integer to a two character string equivalent.

	// the result of the conversion from int to string
	string value;

	// when n is less than 10, add a leading zero
	if (n < 10 && n >= 0)
	{
		value = "0" + to_string(n);
	}
	else if (n >= 10 && n < 60)
	{
		value = to_string(n);
	}
	else
	{
		value = "00";
	}

	// return the new string
	return value;
}

string nCharString(unsigned int n, char c)
{
	/// return the c character n times.
	return string(n, c);
}

string formatTime24(unsigned int h, unsigned int m, unsigned int s)
{
	/// return the concatenation
	return twoDigitString(h) + ":" + twoDigitString(m) + ":" + twoDigitString(s);
}

string formatTime12(unsigned int h, unsigned int m, unsigned int s)
{
	/// set A M to default and change to P M when it is appropriate
	string ampm = "A M";
	if (h >= 12)
	{
		h -= 12;
		ampm = "P M";
	}
	if (h == 0)
	{
		h = 12;
	}

	/// return the concat of thes values
	return twoDigitString(h) + ":" + twoDigitString(m) + ":" + twoDigitString(s) + " " + ampm;
}

void displayClocks(unsigned int h, unsigned int m, unsigned int s)
{
	/// display the clocks in a table

	// clear the screen
	clearScreen();

	// output the table, 12 hour on left, 24 hour on right.
	cout << nCharString(27, '*') << nCharString(3, ' ') << nCharString(27, '*') << endl;
	cout << "*" << nCharString(6, ' ') << "12-Hour Clock" << nCharString(6, ' ') << "*" << nCharString(3, ' ');
	cout << "*" << nCharString(6, ' ') << "24-Hour Clock" << nCharString(6, ' ') << "*" << endl;
	cout << endl;
	cout << "*" << nCharString(6, ' ') << formatTime12(h, m, s) << nCharString(7, ' ') << "*" << nCharString(3, ' ');
	cout << "*" << nCharString(8, ' ') << formatTime24(h, m, s) << nCharString(9, ' ') << "*" << endl;
	cout << nCharString(27, '*') << nCharString(3, ' ') << nCharString(27, '*') << endl;
}

unsigned int getHour()
{
	/// return the hour value
	return hour;
}
void setHour(unsigned int h)
{
	/// set the hour value
	hour = h;
	return;
}
void addOneHour()
{
	/// add one hour to the clock; if the hour is 23, set it to 0
	if (getHour() >= 0 && getHour() <= 22)
	{
		setHour(getHour() + 1);
	}
	else if (getHour() == 23)
	{
		setHour(0);
	}
	return;
}
unsigned int getMinute()
{
	/// return the minute value
	return minute;
}
void setMinute(unsigned int m)
{
	/// set the minute value
	minute = m;
	return;
}
void addOneMinute()
{
	/// add one minute to the clock; if the minute is 59, add one hour
	if (getMinute() >= 0 && getMinute() <= 58)
	{
		setMinute(getMinute() + 1);
	}
	else if (getMinute() == 59)
	{
		setMinute(0);
		addOneHour();
	}
	return;
}

unsigned int getSecond()
{
	/// return the second value
	return second;
}

void setSecond(unsigned int s)
{
	/// set the second value
	second = s;
	return;
}

void addOneSecond()
{
	/// add one second to the clock; if the second is 59, add one minute
	if (getSecond() >= 0 && getSecond() <= 58)
	{
		setSecond(getSecond() + 1);
	}
	else if (getSecond() == 59)
	{
		setSecond(0);
		addOneMinute();
	}
	return;
}

void setTime()
{
	/// Allow the user to set the time. Required 24-hour time format.

	int userHour, userMinute, userSecond = -1; // use regular integers to handle exception
	bool validTime = false;					   // flag to determine if the time is valid

	while (!validTime)
	{
		// ask user for the current time; then parse and configure.
		cout << "Please enter the current time in 24-hour format (HH:MM:SS): ";

		// set the hour and ignore the :
		cin >> userHour;
		cin.ignore();

		// set the minutes and ignore the :
		cin >> userMinute;
		cin.ignore();

		// set the seconds
		cin >> userSecond;
		cin.ignore();

		// validate the input
		if ((userHour >= 0 && userHour <= 23) && (userMinute >= 0 && userMinute <= 59) && (userSecond >= 0 && userSecond <= 59))
		{
			validTime = true;
		}
		else
		{
			clearCin();
			userHour, userMinute, userSecond = -1;
			cout << "Invalid time entered. Please try again." << endl;
		}
	}

	setHour(userHour);
	setMinute(userMinute);
	setSecond(userSecond);

	// now that time is set, clear the screen and show the clocks
	clearScreen();
	displayClocks(hour, minute, second);
}