/** \file
 * \brief Implementation of class GraphAttributes.
 *
 * Class GraphAttributes extends a graph by graphical attributes like
 * node position, color, etc.
 *
 * \author Carsten Gutwenger, Karsten Klein
 *
 * \par License:
 * This file is part of the Open Graph Drawing Framework (OGDF).
 *
 * \par
 * Copyright (C)<br>
 * See README.md in the OGDF root directory for details.
 *
 * \par
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * Version 2 or 3 as published by the Free Software Foundation;
 * see the file LICENSE.txt included in the packaging of this file
 * for details.
 *
 * \par
 * This program 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.
 *
 * \par
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, see
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <ogdf/basic/basic.h>
#include <ogdf/basic/graphics.h>

#include <cctype>
#include <cstdint>
#include <map>
#include <ostream>
#include <string>

namespace ogdf {
using namespace graphics;

std::ostream& operator<<(std::ostream& os, const StrokeType& st) {
	os << toString(st);
	return os;
}

StrokeType intToStrokeType(int i) {
	switch (i) {
	case 0:
		return StrokeType::None;
	case 1:
		return StrokeType::Solid;
	case 2:
		return StrokeType::Dash;
	case 3:
		return StrokeType::Dot;
	case 4:
		return StrokeType::Dashdot;
	case 5:
		return StrokeType::Dashdotdot;
	default:
		return StrokeType::Solid;
	}
}

std::ostream& operator<<(std::ostream& os, const FillPattern& fp) {
	os << toString(fp);
	return os;
}

std::ostream& operator<<(std::ostream& os, const Shape& shape) {
	os << toString(shape);
	return os;
}

FillPattern intToFillPattern(int i) {
	switch (i) {
	case 0:
		return FillPattern::None;
	case 1:
		return FillPattern::Solid;
	case 2:
		return FillPattern::Dense1;
	case 3:
		return FillPattern::Dense2;
	case 4:
		return FillPattern::Dense3;
	case 5:
		return FillPattern::Dense4;
	case 6:
		return FillPattern::Dense5;
	case 7:
		return FillPattern::Dense6;
	case 8:
		return FillPattern::Dense7;
	case 9:
		return FillPattern::Horizontal;
	case 10:
		return FillPattern::Vertical;
	case 11:
		return FillPattern::Cross;
	case 12:
		return FillPattern::BackwardDiagonal;
	case 13:
		return FillPattern::ForwardDiagonal;
	case 14:
		return FillPattern::DiagonalCross;
	default:
		return FillPattern::None;
	}
}

std::ostream& operator<<(std::ostream& os, const EdgeArrow& ea) {
	switch (ea) {
	case EdgeArrow::None:
		os << "None";
		break;
	case EdgeArrow::Last:
		os << "Last";
		break;
	case EdgeArrow::First:
		os << "First";
		break;
	case EdgeArrow::Both:
		os << "Both";
		break;
	case EdgeArrow::Undefined:
		os << "Undefined";
		break;
	}
	return os;
}

uint8_t rgbOfColor[][3] = {
		{240, 248, 255}, // Aliceblue
		{250, 235, 215}, // Antiquewhite
		{0, 255, 255}, // Aqua
		{127, 255, 212}, // Aquamarine
		{240, 255, 255}, // Azure
		{245, 245, 220}, // Beige
		{255, 228, 196}, // Bisque
		{0, 0, 0}, // Black
		{255, 235, 205}, // Blanchedalmond
		{0, 0, 255}, // Blue
		{138, 43, 226}, // Blueviolet
		{165, 42, 42}, // Brown
		{222, 184, 135}, // Burlywood
		{95, 158, 160}, // Cadetblue
		{127, 255, 0}, // Chartreuse
		{210, 105, 30}, // Chocolate
		{255, 127, 80}, // Coral
		{100, 149, 237}, // Cornflowerblue
		{255, 248, 229}, // Cornsilk
		{220, 20, 60}, // Crimson
		{0, 255, 255}, // Cyan
		{0, 0, 139}, // Darkblue
		{0, 139, 139}, // Darkcyan
		{184, 134, 11}, // Darkgoldenrod
		{169, 169, 169}, // Darkgray
		{0, 100, 0}, // Darkgreen
		{169, 169, 169}, // Darkgrey
		{189, 183, 107}, // Darkkhaki
		{139, 0, 139}, // Darkmagenta
		{85, 107, 47}, // Darkolivegreen
		{255, 140, 0}, // Darkorange
		{153, 50, 204}, // Darkorchid
		{139, 0, 0}, // Darkred
		{233, 150, 122}, // Darksalmon
		{143, 188, 143}, // Darkseagreen
		{72, 61, 139}, // Darkslateblue
		{47, 79, 79}, // Darkslategray
		{47, 79, 79}, // Darkslategrey
		{0, 206, 209}, // Darkturquoise
		{148, 0, 211}, // Darkviolet
		{255, 20, 147}, // Deeppink
		{0, 191, 255}, // Deepskyblue
		{105, 105, 105}, // Dimgray
		{105, 105, 105}, // Dimgrey
		{30, 144, 255}, // Dodgerblue
		{178, 34, 34}, // Firebrick
		{255, 250, 240}, // Floralwhite
		{34, 139, 34}, // Forestgreen
		{255, 0, 255}, // Fuchsia
		{220, 220, 220}, // Gainsboro
		{248, 248, 255}, // Ghostwhite
		{255, 215, 0}, // Gold
		{218, 165, 32}, // Goldenrod
		{128, 128, 128}, // Gray
		{0, 128, 0}, // Green
		{173, 255, 47}, // Greenyellow
		{128, 128, 128}, // Grey
		{240, 255, 240}, // Honeydew
		{255, 105, 180}, // Hotpink
		{205, 92, 92}, // Indianred
		{75, 0, 130}, // Indigo
		{255, 255, 240}, // Ivory
		{240, 230, 140}, // Khaki
		{230, 230, 250}, // Lavender
		{255, 240, 245}, // Lavenderblush
		{124, 252, 0}, // Lawngreen
		{255, 250, 205}, // Lemonchiffon
		{173, 216, 230}, // Lightblue
		{240, 128, 128}, // Lightcoral
		{224, 255, 255}, // Lightcyan
		{250, 250, 210}, // Lightgoldenrodyellow
		{211, 211, 211}, // Lightgray
		{144, 238, 144}, // Lightgreen
		{211, 211, 211}, // Lightgrey
		{255, 182, 193}, // Lightpink
		{255, 160, 122}, // Lightsalmon
		{32, 178, 170}, // Lightseagreen
		{135, 206, 250}, // Lightskyblue
		{119, 136, 153}, // Lightslategray
		{119, 136, 153}, // Lightslategrey
		{176, 196, 222}, // Lightsteelblue
		{255, 255, 224}, // Lightyellow
		{0, 255, 0}, // Lime
		{50, 205, 50}, // Limegreen
		{250, 240, 230}, // Linen
		{255, 0, 255}, // Magenta
		{128, 0, 0}, // Maroon
		{102, 205, 170}, // Mediumaquamarine
		{0, 0, 205}, // Mediumblue
		{186, 85, 211}, // Mediumorchid
		{147, 112, 219}, // Mediumpurple
		{60, 179, 113}, // Mediumseagreen
		{123, 104, 238}, // Mediumslateblue
		{0, 250, 154}, // Mediumspringgreen
		{72, 209, 204}, // Mediumturquoise
		{199, 21, 133}, // Mediumvioletred
		{25, 25, 112}, // Midnightblue
		{245, 255, 250}, // Mintcream
		{255, 228, 225}, // Mistyrose
		{255, 228, 181}, // Moccasin
		{255, 222, 173}, // Navajowhite
		{0, 0, 128}, // Navy
		{253, 245, 230}, // Oldlace
		{128, 128, 0}, // Olive
		{107, 142, 35}, // Olivedrab
		{255, 165, 0}, // Orange
		{255, 69, 0}, // Orangered
		{218, 112, 214}, // Orchid
		{238, 232, 170}, // Palegoldenrod
		{152, 251, 152}, // Palegreen
		{175, 238, 238}, // Paleturquoise
		{219, 112, 147}, // Palevioletred
		{255, 239, 213}, // Papayawhip
		{255, 218, 185}, // Peachpuff
		{205, 133, 63}, // Peru
		{255, 192, 203}, // Pink
		{221, 160, 221}, // Plum
		{176, 224, 230}, // Powderblue
		{128, 0, 128}, // Purple
		{255, 0, 0}, // Red
		{188, 143, 143}, // Rosybrown
		{65, 105, 225}, // Royalblue
		{139, 69, 19}, // Saddlebrown
		{250, 128, 114}, // Salmon
		{244, 164, 96}, // Sandybrown
		{46, 139, 87}, // Seagreen
		{255, 245, 238}, // Seashell
		{160, 82, 45}, // Sienna
		{192, 192, 192}, // Silver
		{135, 206, 235}, // Skyblue
		{106, 90, 205}, // Slateblue
		{112, 128, 144}, // Slategray
		{112, 128, 144}, // Slategrey
		{255, 250, 250}, // Snow
		{0, 255, 127}, // Springgreen
		{70, 130, 180}, // Steelblue
		{210, 180, 140}, // Tan
		{0, 128, 128}, // Teal
		{216, 191, 216}, // Thistle
		{255, 99, 71}, // Tomato
		{64, 224, 208}, // Turquoise
		{238, 130, 238}, // Violet
		{245, 222, 179}, // Wheat
		{255, 255, 255}, // White
		{245, 245, 245}, // Whitesmoke
		{255, 255, 0}, // Yellow
		{154, 205, 50} // Yellowgreen
};

Color::Color(Color::Name name)
	: m_red(rgbOfColor[static_cast<int>(name)][0])
	, m_green(rgbOfColor[static_cast<int>(name)][1])
	, m_blue(rgbOfColor[static_cast<int>(name)][2])
	, m_alpha(255) { }

inline char tohex(int value) {
	value &= 0xf;
	return (char)((value < 10) ? '0' + value : 'A' + value - 10);
}

string Color::toString() const {
	char str[8];

	str[0] = '#';
	str[1] = tohex(m_red >> 4);
	str[2] = tohex(m_red);
	str[3] = tohex(m_green >> 4);
	str[4] = tohex(m_green);
	str[5] = tohex(m_blue >> 4);
	str[6] = tohex(m_blue);
	str[7] = 0;

	return string(str);
}

inline uint8_t fromHex(char c) {
	return uint8_t((isdigit(int(c)) ? c - '0' : tolower(int(c)) - 'a' + 10) & 0xf);
}

bool Color::fromString(const string& str) {
	if (str.length() != 4 && str.length() != 7) {
		m_red = m_green = m_blue = 0;
		m_alpha = 255;
		return false;
	}

	if (str[0] != '#') {
		m_red = m_green = m_blue = 0;
		m_alpha = 255;
		return false;
	}
	for (string::size_type i = 1; i < str.length(); ++i) {
		if (!isxdigit((int)str[i])) {
			m_red = m_green = m_blue = 0;
			m_alpha = 255;
			return false;
		}
	}

	if (str.length() == 7) {
		m_red = (uint8_t)((fromHex(str[1]) << 4) + fromHex(str[2]));
		m_green = (uint8_t)((fromHex(str[3]) << 4) + fromHex(str[4]));
		m_blue = (uint8_t)((fromHex(str[5]) << 4) + fromHex(str[6]));

	} else {
		uint8_t v = fromHex(str[1]);
		m_red = (uint8_t)((v << 4) + v);

		v = fromHex(str[2]);
		m_green = (uint8_t)((v << 4) + v);

		v = fromHex(str[3]);
		m_blue = (uint8_t)((v << 4) + v);
	}

	m_alpha = 255;

	return true;
}

namespace graphics {
std::map<Shape, string> fromShape;
std::map<string, Shape> toShape;

std::map<StrokeType, string> fromStrokeType;
std::map<string, StrokeType> toStrokeType;

std::map<FillPattern, string> fromFillPattern;
std::map<string, FillPattern> toFillPattern;
}


}
