// colour.h - Colour Structures
//
// (c) 2016 Xestia Software Development.
//
// This file is part of Xestia Calendar.
//
// Xestia Calendar is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by the
// Free Software Foundation, version 3 of the license.
//
// Xestia Calendar is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with Xestia Calendar. If not, see <http://www.gnu.org/licenses/>

#include <string>
#include <sstream>
#include "text.h"

#ifndef __COMMON_COLOUR_H__
#define __COMMON_COLOUR_H__

using namespace std;

struct Colour{
	
	int red = 0;
	int blue = 0;
	int green = 0;
	int alpha = 255;

	Colour& operator= (string const &arg){

		// Check if the size of the string is 9.
		// Return if not.
		
		if (arg.size() != 9){
			
			return *this;
			
		}
		
		// Check if the first character has a hash in.
		// Return if not.
		
		if (arg.substr(0,1) != "#"){
			
			return *this;
			
		}
		
		// Check each character (1-8) and make sure
		// it is a number or a letter between A and F.
		
		for (int characterSeek = 1; characterSeek < 9; characterSeek++){
			
			int characterASCII = 0;
			
			characterASCII = arg[characterSeek];
			
			if ((characterASCII < 48 && characterASCII > 57) || (characterASCII < 65 && characterASCII > 70)){
				return *this;
			}
			
		}
		
		istringstream hexNumber;
		
		// Set the red value.

		hexNumber.str(arg.substr(1,2));
		hexNumber >> hex >> this->red;
		
		// Set the green value.

		hexNumber.clear();
		hexNumber.str(arg.substr(3,2));
		hexNumber >> hex >> this->green;
		
		// Set the blue value.

		hexNumber.clear();
		hexNumber.str(arg.substr(5,2));
		hexNumber >> hex >> this->blue;
		
		// Set the alpha value.
		
		hexNumber.clear();
		hexNumber.str(arg.substr(7,2));
		hexNumber >> hex >> this->alpha;
		
		return *this;
		
	}
	
	operator string() {
		
		string ColourOut;
		string ColourOutHex;
	
		ColourOut = "#";
		
		// Convert the red value.
		
		if (red > 255){
			ColourOut += "FF";
		} else if (red < 0) {
			ColourOut += "00";			
		} else {
			IntToHex(&red, &ColourOutHex, 2);
			ColourOut += ColourOutHex;
		}
		
		// Convert the green value.

		if (green > 255){
			ColourOut += "FF";
		} else if (green < 0){
			ColourOut += "00";			
		} else {
			IntToHex(&green, &ColourOutHex, 2);
			ColourOut += ColourOutHex;			
		}
		
		// Convert the blue value.

		if (blue > 255){
			ColourOut += "FF";
		} else if (blue < 0) {
			ColourOut += "00";			
		} else {
			IntToHex(&blue, &ColourOutHex, 2);
			ColourOut += ColourOutHex;
		}
		
		// Convert the alpha value.
		
		if (alpha > 255){
			ColourOut += "FF";
		} else if (alpha < 0){
			ColourOut += "00";
		} else {
			IntToHex(&alpha, &ColourOutHex, 2);
			ColourOut += ColourOutHex;
		}
		
		return ColourOut;
		
	}
	
};

#endif