/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2023, Arnaud Roques
 *
 * Project Info:  http://plantuml.com
 * 
 * If you like this project or if you find it useful, you can support us at:
 * 
 * http://plantuml.com/patreon (only 1$ per month!)
 * http://plantuml.com/paypal
 * 
 * This file is part of PlantUML.
 *
 * PlantUML 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 *
 * Original Author:  Arnaud Roques
 *
 *
 */
package net.sourceforge.plantuml;

import java.awt.Font;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.Set;
import java.util.TreeSet;
import java.util.regex.Pattern;

import net.sourceforge.plantuml.activitydiagram3.ftile.Arrows;
import net.sourceforge.plantuml.activitydiagram3.ftile.ArrowsRegular;
import net.sourceforge.plantuml.activitydiagram3.ftile.ArrowsTriangle;
import net.sourceforge.plantuml.command.regex.Matcher2;
import net.sourceforge.plantuml.command.regex.MyPattern;
import net.sourceforge.plantuml.command.regex.Pattern2;
import net.sourceforge.plantuml.creole.CreoleMode;
import net.sourceforge.plantuml.creole.Parser;
import net.sourceforge.plantuml.creole.SheetBuilder;
import net.sourceforge.plantuml.creole.legacy.CreoleParser;
import net.sourceforge.plantuml.cucadiagram.LinkStyle;
import net.sourceforge.plantuml.cucadiagram.Rankdir;
import net.sourceforge.plantuml.cucadiagram.Stereotype;
import net.sourceforge.plantuml.cucadiagram.dot.DotSplines;
import net.sourceforge.plantuml.graphic.FontConfiguration;
import net.sourceforge.plantuml.graphic.HorizontalAlignment;
import net.sourceforge.plantuml.graphic.color.Colors;
import net.sourceforge.plantuml.log.Logme;
import net.sourceforge.plantuml.skin.ActorStyle;
import net.sourceforge.plantuml.skin.ArrowDirection;
import net.sourceforge.plantuml.skin.Padder;
import net.sourceforge.plantuml.sprite.Sprite;
import net.sourceforge.plantuml.sprite.SpriteImage;
import net.sourceforge.plantuml.style.FromSkinparamToStyle;
import net.sourceforge.plantuml.style.Style;
import net.sourceforge.plantuml.style.StyleBuilder;
import net.sourceforge.plantuml.style.StyleLoader;
import net.sourceforge.plantuml.style.parser.StyleParser;
import net.sourceforge.plantuml.style.parser.StyleParsingException;
import net.sourceforge.plantuml.svek.ConditionEndStyle;
import net.sourceforge.plantuml.svek.ConditionStyle;
import net.sourceforge.plantuml.svek.PackageStyle;
import net.sourceforge.plantuml.svg.LengthAdjust;
import net.sourceforge.plantuml.ugraphic.UFont;
import net.sourceforge.plantuml.ugraphic.UStroke;
import net.sourceforge.plantuml.ugraphic.color.HColor;
import net.sourceforge.plantuml.ugraphic.color.HColorSet;
import net.sourceforge.plantuml.ugraphic.color.HColors;
import net.sourceforge.plantuml.ugraphic.color.NoSuchColorException;
import net.sourceforge.plantuml.utils.BlocLines;

public class SkinParam implements ISkinParam {

	// TODO not clear whether SkinParam or ImageBuilder is responsible for defaults
	public static final String DEFAULT_PRESERVE_ASPECT_RATIO = "none";

	// private String skin = "debug.skin";
	private String skin = "plantuml.skin";
	private StyleBuilder styleBuilder;

	private SkinParam(UmlDiagramType type) {
		this.type = type;
	}

	@Override
	public StyleBuilder getCurrentStyleBuilder() {
		if (styleBuilder == null)
			try {
				this.styleBuilder = getCurrentStyleBuilderInternal();
			} catch (StyleParsingException e) {
				Logme.error(e);
			} catch (IOException e) {
				Logme.error(e);
			}

		return styleBuilder;
	}

	@Override
	public void muteStyle(Style modifiedStyle) {
		styleBuilder = getCurrentStyleBuilder().muteStyle(modifiedStyle);
	}

	@Override
	public String getDefaultSkin() {
		return skin;
	}

	@Override
	public void setDefaultSkin(String newSkin) {
		this.skin = newSkin;
	}

	public StyleBuilder getCurrentStyleBuilderInternal() throws IOException, StyleParsingException {
		final StyleLoader tmp = new StyleLoader(this);
		StyleBuilder result = tmp.loadSkin(this.getDefaultSkin());
		if (result == null)
			result = tmp.loadSkin("plantuml.skin");

		return result;
	}

	public static int zeroMargin(int defaultValue) {
		return defaultValue;
	}

	private static final String stereoPatternString = "\\<\\<(.*?)\\>\\>";
	private static final Pattern2 stereoPattern = MyPattern.cmpile(stereoPatternString);

	private final Map<String, String> params = new HashMap<String, String>();
	private final Map<String, String> paramsPendingForStyleMigration = new LinkedHashMap<String, String>();
	private final Map<String, String> svgCharSizes = new HashMap<String, String>();
	private Rankdir rankdir = Rankdir.TOP_TO_BOTTOM;
	private final UmlDiagramType type;
	private boolean useVizJs;

	@Override
	public void copyAllFrom(Map<String, String> other) {
		this.params.putAll(other);
	}

	@Override
	public Map<String, String> values() {
		return Collections.unmodifiableMap(params);
	}

	public void setParam(String key, String value) {
		for (String key2 : cleanForKey(key)) {
			params.put(key2, StringUtils.trin(value));
			applyPendingStyleMigration();
			final FromSkinparamToStyle convertor = new FromSkinparamToStyle(key2);
			convertor.convertNow(value, getCurrentStyleBuilder());
			for (Style style : convertor.getStyles())
				muteStyle(style);
		}
		if ("style".equalsIgnoreCase(key) && "strictuml".equalsIgnoreCase(value)) {
			final InputStream internalIs = StyleLoader.class.getResourceAsStream("/skin/strictuml.skin");
			final StyleBuilder styleBuilder = this.getCurrentStyleBuilder();
			try {
				final BlocLines lines = BlocLines.load(internalIs, null);
				for (Style modifiedStyle : StyleParser.parse(lines, styleBuilder))
					this.muteStyle(modifiedStyle);

			} catch (StyleParsingException e) {
				Logme.error(e);
			} catch (IOException e) {
				Logme.error(e);
			}
		}
	}

	public void applyPendingStyleMigration() {
		for (Entry<String, String> ent : paramsPendingForStyleMigration.entrySet()) {
			final FromSkinparamToStyle convertor = new FromSkinparamToStyle(ent.getKey());
			convertor.convertNow(ent.getValue(), getCurrentStyleBuilder());
			for (Style style : convertor.getStyles())
				muteStyle(style);
		}
		paramsPendingForStyleMigration.clear();
	}

	public static SkinParam create(UmlDiagramType type) {
		return new SkinParam(type);
	}

	public static SkinParam noShadowing(UmlDiagramType type) {
		final SkinParam result = new SkinParam(type);
		result.setParam("shadowing", "false");
		return result;
	}

	private final Map<String, List<String>> cacheCleanForKey = new HashMap<String, List<String>>();

	List<String> cleanForKey(String key) {
		List<String> result = cacheCleanForKey.get(key);
		if (result == null) {
			result = cleanForKeySlow(key);
			cacheCleanForKey.put(key, result);
		}
		return result;
	}

	private static final Pattern patternCleanUnderscoreDot = Pattern.compile("_|\\.");
	private static final Pattern patternCleanSequence = Pattern.compile("sequence(participant|actor)");
	private static final Pattern patternCleanArrow = Pattern
			.compile("(activity|class|component|object|sequence|state|usecase)arrow");
	private static final Pattern patternCleanAlign = Pattern.compile("align$");

	List<String> cleanForKeySlow(String key) {
		key = StringUtils.trin(StringUtils.goLowerCase(key));
		key = patternCleanUnderscoreDot.matcher(key).replaceAll("");
		key = patternCleanSequence.matcher(key).replaceAll("$1");
		key = patternCleanArrow.matcher(key).replaceAll("arrow");
		key = patternCleanAlign.matcher(key).replaceAll("alignment");

		final Matcher2 mm = stereoPattern.matcher(key);
		final List<String> result = new ArrayList<>();
		while (mm.find()) {
			final String s = mm.group(1);
			result.add(key.replaceAll(stereoPatternString, "") + "<<" + s + ">>");
		}
		if (result.size() == 0)
			result.add(key);

		return Collections.unmodifiableList(result);
	}

	@Override
	public HColor getHyperlinkColor() {
		final HColor result = getHtmlColor(ColorParam.hyperlink, null, false);
		if (result == null)
			return HColors.BLUE;

		return result;
	}

	@Override
	public HColor getBackgroundColor() {
		final HColor result = getHtmlColor(ColorParam.background, null, false);
		return result != null ? result : HColors.WHITE;
	}

	@Override
	public String getValue(String key) {
		applyPendingStyleMigration();
		for (String key2 : cleanForKey(key)) {
			final String result = params.get(key2);
			if (result != null)
				return result;

		}
		return null;
	}

	public String getValue(String key, String defaultValue) {
		final String result = getValue(key);
		return result == null ? defaultValue : result;
	}

	private boolean valueIs(String key, String expected) {
		return expected.equalsIgnoreCase(getValue(key));
	}

	private boolean isTrue(String key) {
		return valueIs(key, "true");
	}

	static String humanName(String key) {
		final StringBuilder sb = new StringBuilder();
		boolean upper = true;
		for (int i = 0; i < key.length(); i++) {
			final char c = key.charAt(i);
			if (c == '_') {
				upper = true;
			} else {
				sb.append(upper ? StringUtils.goUpperCase(c) : StringUtils.goLowerCase(c));
				upper = false;
			}
		}
		return sb.toString();
	}

	@Override
	public HColor getHtmlColor(ColorParam param, Stereotype stereotype, boolean clickable) {
		if (stereotype != null) {
			checkStereotype(stereotype);
			for (String s : stereotype.getMultipleLabels()) {
				final String value2 = getValue(param.name() + "color" + "<<" + s + ">>");
				if (value2 != null && getIHtmlColorSet().getColorOrWhite(value2) != null)
					return getIHtmlColorSet().getColorOrWhite(value2);

			}
		}
		final String value = getValue(getParamName(param, clickable));
		if (value == null)
			return null;

		if ((param == ColorParam.background || param == ColorParam.arrowHead)
				&& (value.equalsIgnoreCase("transparent") || value.equalsIgnoreCase("none")))
			return HColors.transparent();

		if (param == ColorParam.background)
			return getIHtmlColorSet().getColorOrWhite(value);

		assert param != ColorParam.background;

		return getIHtmlColorSet().getColorOrWhite(value);
	}

	@Override
	public char getCircledCharacter(Stereotype stereotype) {
		final String value2 = getValue(
				"spotchar" + Objects.requireNonNull(stereotype).getLabel(Guillemet.DOUBLE_COMPARATOR));
		if (value2 != null && value2.length() > 0)
			return value2.charAt(0);

		return 0;
	}

	@Override
	public Colors getColors(ColorParam param, Stereotype stereotype) throws NoSuchColorException {
		if (stereotype != null) {
			checkStereotype(stereotype);
			final String value2 = getValue(param.name() + "color" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR));
			if (value2 != null)
				return new Colors(value2, getIHtmlColorSet(), param.getColorType());

		}
		final String value = getValue(getParamName(param, false));
		if (value == null)
			return Colors.empty();

		return new Colors(value, getIHtmlColorSet(), param.getColorType());
	}

	private String getParamName(ColorParam param, boolean clickable) {
		String n = param.name();
		if (clickable && n.endsWith("Background"))
			n = n.replaceAll("Background", "ClickableBackground");
		else if (clickable && n.endsWith("Border"))
			n = n.replaceAll("Border", "ClickableBorder");

		return n + "color";
	}

	private void checkStereotype(Stereotype stereotype) {
		// if (stereotype.startsWith("<<") == false || stereotype.endsWith(">>") ==
		// false) {
		// throw new IllegalArgumentException();
		// }
	}

	private int getFontSize(Stereotype stereotype, FontParam... param) {
		if (stereotype != null) {
			checkStereotype(stereotype);
			final String value2 = getFirstValueNonNullWithSuffix(
					"fontsize" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR), param);
			if (value2 != null && value2.matches("\\d+"))
				return Integer.parseInt(value2);

		}
		String value = getFirstValueNonNullWithSuffix("fontsize", param);
		if (value == null || value.matches("\\d+") == false)
			value = getValue("defaultfontsize");

		if (value == null || value.matches("\\d+") == false)
			return param[0].getDefaultSize(this);

		return Integer.parseInt(value);
	}

	private String getFontFamily(Stereotype stereotype, FontParam... param) {
		if (stereotype != null) {
			checkStereotype(stereotype);
			final String value2 = getFirstValueNonNullWithSuffix(
					"fontname" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR), param);
			if (value2 != null)
				return StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(value2);

		}
		// Times, Helvetica, Courier or Symbol
		String value = getFirstValueNonNullWithSuffix("fontname", param);
		if (value != null)
			return StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(value);

		if (param[0] != FontParam.CIRCLED_CHARACTER) {
			value = getValue("defaultfontname");
			if (value != null)
				return StringUtils.eventuallyRemoveStartingAndEndingDoubleQuote(value);

		}
		return param[0].getDefaultFamily();
	}

	@Override
	public HColor getFontHtmlColor(Stereotype stereotype, FontParam... param) {
		String value = null;
		if (stereotype != null) {
			checkStereotype(stereotype);
			value = getFirstValueNonNullWithSuffix("fontcolor" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR),
					param);
		}

		if (value == null)
			value = getFirstValueNonNullWithSuffix("fontcolor", param);

		if (value == null)
			value = getValue("defaultfontcolor");

		if (value == null)
			value = param[0].getDefaultColor();

		if (value == null)
			return null;

		return getIHtmlColorSet().getColorOrWhite(value);
	}

	private String getFirstValueNonNullWithSuffix(String suffix, FontParam... param) {
		for (FontParam p : param) {
			final String v = getValue(p.name() + suffix);
			if (v != null)
				return v;

		}
		return null;
	}

	private int getFontStyle(Stereotype stereotype, boolean inPackageTitle, FontParam... param) {
		String value = null;
		if (stereotype != null) {
			checkStereotype(stereotype);
			value = getFirstValueNonNullWithSuffix("fontstyle" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR),
					param);
		}
		if (value == null)
			value = getFirstValueNonNullWithSuffix("fontstyle", param);

		if (value == null)
			value = getValue("defaultfontstyle");

		if (value == null)
			return param[0].getDefaultFontStyle(this, inPackageTitle);

		int result = Font.PLAIN;
		if (StringUtils.goLowerCase(value).contains("bold"))
			result = result | Font.BOLD;

		if (StringUtils.goLowerCase(value).contains("italic"))
			result = result | Font.ITALIC;

		return result;
	}

	@Override
	public UFont getFont(Stereotype stereotype, boolean inPackageTitle, FontParam... fontParam) {
		if (stereotype != null)
			checkStereotype(stereotype);

		final String fontFamily = getFontFamily(stereotype, fontParam);
		final int fontStyle = getFontStyle(stereotype, inPackageTitle, fontParam);
		final int fontSize = getFontSize(stereotype, fontParam);
		return new UFont(fontFamily, fontStyle, fontSize);
	}

	@Override
	public int getCircledCharacterRadius() {
		final int value = getAsInt("circledCharacterRadius", -1);
		return value == -1 ? getFontSize(null, FontParam.CIRCLED_CHARACTER) / 3 + 6 : value;
	}

	@Override
	public int classAttributeIconSize() {
		return getAsInt("classAttributeIconSize", 10);
	}

	public static Collection<String> getPossibleValues() {
		final Set<String> result = new TreeSet<>();
		result.add("Monochrome");
		// result.add("BackgroundColor");
		result.add("CircledCharacterRadius");
		result.add("ClassAttributeIconSize");
		result.add("DefaultFontName");
		result.add("DefaultFontStyle");
		result.add("DefaultFontSize");
		result.add("DefaultFontColor");
		result.add("MinClassWidth");
		result.add("MinClassWidth");
		result.add("Dpi");
		result.add("DefaultTextAlignment");
		result.add("Shadowing");
		result.add("NoteShadowing");
		result.add("Handwritten");
		result.add("CircledCharacterRadius");
		result.add("ClassAttributeIconSize");
		result.add("Linetype");
		result.add("PackageStyle");
		result.add("ComponentStyle");
		result.add("StereotypePosition");
		result.add("Nodesep");
		result.add("Ranksep");
		result.add("RoundCorner");
		result.add("TitleBorderRoundCorner");
		result.add("MaxMessageSize");
		result.add("Style");
		result.add("SequenceParticipant");
		result.add("ConditionStyle");
		result.add("ConditionEndStyle");
		result.add("SameClassWidth");
		result.add("HyperlinkUnderline");
		result.add("Padding");
		result.add("BoxPadding");
		result.add("ParticipantPadding");
		result.add("Guillemet");
		result.add("SvglinkTarget");
		result.add("DefaultMonospacedFontName");
		result.add("TabSize");
		result.add("MaxAsciiMessageLength");
		result.add("ColorArrowSeparationSpace");
		result.add("ResponseMessageBelowArrow");
		result.add("GenericDisplay");
		result.add("PathHoverColor");
		result.add("SwimlaneWidth");
		result.add("PageBorderColor");
		result.add("PageExternalColor");
		result.add("PageMargin");
		result.add("WrapWidth");
		result.add("SwimlaneWidth");
		result.add("SwimlaneWrapTitleWidth");
		result.add("FixCircleLabelOverlapping");
		result.add("LifelineStrategy");

		for (FontParam p : EnumSet.allOf(FontParam.class)) {
			final String h = humanName(p.name());
			result.add(h + "FontStyle");
			result.add(h + "FontName");
			result.add(h + "FontSize");
			result.add(h + "FontColor");
		}
		for (ColorParam p : EnumSet.allOf(ColorParam.class)) {
			final String h = capitalize(p.name());
			result.add(h + "Color");
		}
		for (LineParam p : EnumSet.allOf(LineParam.class)) {
			final String h = capitalize(p.name());
			result.add(h + "Thickness");
		}
		for (AlignmentParam p : EnumSet.allOf(AlignmentParam.class)) {
			final String h = capitalize(p.name());
			result.add(h);
		}
		return Collections.unmodifiableSet(result);
	}

	private static String capitalize(String name) {
		return StringUtils.goUpperCase(name.substring(0, 1)) + name.substring(1);
	}

	@Override
	public int getDpi() {
		final int defaultValue = 96;
		final int dpi = getAsInt("dpi", defaultValue);
		if (dpi <= 0)
			return defaultValue;
		return dpi;
	}

	@Override
	public DotSplines getDotSplines() {
		final String value = getValue("linetype");
		if ("polyline".equalsIgnoreCase(value))
			return DotSplines.POLYLINE;

		if ("ortho".equalsIgnoreCase(value))
			return DotSplines.ORTHO;

		return DotSplines.SPLINES;
	}

	@Override
	public HorizontalAlignment getHorizontalAlignment(AlignmentParam param, ArrowDirection arrowDirection,
			boolean isReverseDefine, HorizontalAlignment overrideDefault) {
		final String value;
		switch (param) {
		case sequenceMessageAlignment:
			value = getArg(getValue(AlignmentParam.sequenceMessageAlignment.name()), 0);
			break;
		case sequenceMessageTextAlignment:
			value = getArg(getValue(AlignmentParam.sequenceMessageAlignment.name()), 1);
			break;
		default:
			value = getValue(param.name());
		}
		if ("first".equalsIgnoreCase(value)) {
			if (arrowDirection == ArrowDirection.RIGHT_TO_LEFT_REVERSE) {
				if (isReverseDefine)
					return HorizontalAlignment.LEFT;

				return HorizontalAlignment.RIGHT;
			} else {
				if (isReverseDefine)
					return HorizontalAlignment.RIGHT;

				return HorizontalAlignment.LEFT;
			}
		}
		if ("direction".equalsIgnoreCase(value)) {
			if (arrowDirection == ArrowDirection.LEFT_TO_RIGHT_NORMAL)
				return HorizontalAlignment.LEFT;

			if (arrowDirection == ArrowDirection.RIGHT_TO_LEFT_REVERSE)
				return HorizontalAlignment.RIGHT;

			if (arrowDirection == ArrowDirection.BOTH_DIRECTION)
				return HorizontalAlignment.CENTER;

		}
		if ("reversedirection".equalsIgnoreCase(value)) {
			if (arrowDirection == ArrowDirection.LEFT_TO_RIGHT_NORMAL)
				return HorizontalAlignment.RIGHT;

			if (arrowDirection == ArrowDirection.RIGHT_TO_LEFT_REVERSE)
				return HorizontalAlignment.LEFT;

			if (arrowDirection == ArrowDirection.BOTH_DIRECTION)
				return HorizontalAlignment.CENTER;

		}
		final HorizontalAlignment result = HorizontalAlignment.fromString(value);
		if (result == null && param == AlignmentParam.noteTextAlignment)
			return getDefaultTextAlignment(overrideDefault == null ? HorizontalAlignment.LEFT : overrideDefault);
		else if (result == null && param == AlignmentParam.stateMessageAlignment)
			return getDefaultTextAlignment(HorizontalAlignment.CENTER);
		else if (result == null)
			return param.getDefaultValue();

		return result;
	}

	@Override
	public HorizontalAlignment getDefaultTextAlignment(HorizontalAlignment defaultValue) {
		final String value = getValue("defaulttextalignment");
		final HorizontalAlignment result = HorizontalAlignment.fromString(value);
		if (result == null)
			return defaultValue;

		return result;
	}

	@Override
	public HorizontalAlignment getStereotypeAlignment() {
		final String value = getValue("stereotypealignment");
		final HorizontalAlignment result = HorizontalAlignment.fromString(value);
		if (result == null)
			return HorizontalAlignment.CENTER;

		return result;
	}

	private String getArg(String value, int i) {
		if (value == null)
			return null;

		final String[] split = value.split(":");
		if (i >= split.length)
			return split[0];

		return split[i];
	}

	@Override
	public boolean shadowing(Stereotype stereotype) {
		if (stereotype != null) {
			checkStereotype(stereotype);
			final String value2 = getValue("shadowing" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR));
			if (value2 != null)
				return value2.equalsIgnoreCase("true");

		}
		final String value = getValue("shadowing");
		if ("false".equalsIgnoreCase(value))
			return false;

		if ("true".equalsIgnoreCase(value))
			return true;

		if (strictUmlStyle())
			return false;

		return true;
	}

	@Override
	public boolean shadowingForNote(Stereotype stereotype) {
		if (stereotype != null) {
			checkStereotype(stereotype);
			final String value2 = getValue("note" + "shadowing" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR));
			if (value2 != null)
				return value2.equalsIgnoreCase("true");

		}
		final String value2 = getValue("note" + "shadowing");
		if (value2 != null)
			return value2.equalsIgnoreCase("true");

		return shadowing(stereotype);
	}

	private final Map<String, Sprite> sprites = new HashMap<String, Sprite>();

	@Override
	public Collection<String> getAllSpriteNames() {
		return Collections.unmodifiableCollection(new TreeSet<>(sprites.keySet()));
	}

	public void addSprite(String name, Sprite sprite) {
		sprites.put(name, sprite);
	}

	@Override
	public Sprite getSprite(String name) {
		Sprite result = sprites.get(name);
		if (result == null)
			result = SpriteImage.fromInternal(name);

		return result;
	}

	@Override
	public PackageStyle packageStyle() {
		final String value = getValue("packageStyle");
		final PackageStyle p = PackageStyle.fromString(value);
		if (p == null)
			return PackageStyle.FOLDER;

		return p;
	}

	@Override
	public ComponentStyle componentStyle() {
		if (strictUmlStyle())
			return ComponentStyle.UML2;

		final String value = getValue("componentstyle");
		if ("uml1".equalsIgnoreCase(value))
			return ComponentStyle.UML1;
		if ("uml2".equalsIgnoreCase(value))
			return ComponentStyle.UML2;
		if ("rectangle".equalsIgnoreCase(value))
			return ComponentStyle.RECTANGLE;
		return ComponentStyle.UML2;
	}

	@Override
	public boolean stereotypePositionTop() {
		return !valueIs("stereotypePosition", "bottom");
	}

	@Override
	public boolean useSwimlanes(UmlDiagramType type) {
		if (type != UmlDiagramType.ACTIVITY)
			return false;

		return swimlanes();
	}

	public boolean swimlanes() {
		return isTrue("swimlane") || isTrue("swimlanes");
	}

	@Override
	public double getNodesep() {
		// TODO strange, this returns a double but only accepts integer values
		return getAsInt("nodesep", 0);
	}

	@Override
	public double getRanksep() {
		// TODO strange, this returns a double but only accepts integer values
		return getAsInt("ranksep", 0);
	}

	@Override

	public double getDiagonalCorner(CornerParam param, Stereotype stereotype) {
		final String key = param.getDiagonalKey();
		Double result = getCornerInternal(key, param, stereotype);
		if (result != null)
			return result;

		result = getCornerInternal(key, param, null);
		if (result != null)
			return result;

		if (param == CornerParam.DEFAULT)
			return 0;

		return getDiagonalCorner(CornerParam.DEFAULT, stereotype);
	}

	@Override
	public double getRoundCorner(CornerParam param, Stereotype stereotype) {
		final String key = param.getRoundKey();
		Double result = getCornerInternal(key, param, stereotype);
		if (result != null)
			return result;

		result = getCornerInternal(key, param, null);
		if (result != null)
			return result;

		if (param == CornerParam.DEFAULT)
			return 0;

		return getRoundCorner(CornerParam.DEFAULT, stereotype);
	}

	private Double getCornerInternal(String key, CornerParam param, Stereotype stereotype) {
		if (stereotype != null)
			key += stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR);

		final String value = getValue(key);
		if (value != null && value.matches("\\d+"))
			return Double.parseDouble(value);

		return null;
	}

	@Override
	public UStroke getThickness(LineParam param, Stereotype stereotype) {
		LinkStyle style = null;
		if (stereotype != null) {
			checkStereotype(stereotype);

			final String styleValue = getValue(
					param.name() + "style" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR));
			if (styleValue != null)
				style = LinkStyle.fromString2(styleValue);

			final String value2 = getValue(
					param.name() + "thickness" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR));
			if (value2 != null && value2.matches("[\\d.]+")) {
				if (style == null)
					style = LinkStyle.NORMAL();

				return style.goThickness(Double.parseDouble(value2)).getStroke3();
			}
		}
		final String value = getValue(param.name() + "thickness");
		if (value != null && value.matches("[\\d.]+")) {
			if (style == null)
				style = LinkStyle.NORMAL();

			return style.goThickness(Double.parseDouble(value)).getStroke3();
		}
		if (style == null) {
			final String styleValue = getValue(param.name() + "style");
			if (styleValue != null)
				style = LinkStyle.fromString2(styleValue);

		}
		if (style != null && style.isNormal() == false)
			return style.getStroke3();

		return null;
	}

	@Override
	public LineBreakStrategy maxMessageSize() {
		String value = getValue("wrapmessagewidth");
		if (value == null)
			value = getValue("maxmessagesize");

		return new LineBreakStrategy(value);
	}

	@Override
	public LineBreakStrategy swimlaneWrapTitleWidth() {
		final String value = getValue("swimlanewraptitlewidth");
		return new LineBreakStrategy(value);
	}

	@Override
	public boolean strictUmlStyle() {
		return valueIs("style", "strictuml");
	}

	@Override
	public boolean forceSequenceParticipantUnderlined() {
		return valueIs("sequenceParticipant", "underline");
	}

	@Override
	public ConditionStyle getConditionStyle() {
		final String value = getValue("conditionStyle");
		final ConditionStyle p = ConditionStyle.fromString(value);
		if (p == null)
			return ConditionStyle.INSIDE_HEXAGON;

		return p;
	}

	@Override
	public ConditionEndStyle getConditionEndStyle() {
		final String value = getValue("conditionEndStyle");
		final ConditionEndStyle p = ConditionEndStyle.fromString(value);
		if (p == null)
			return ConditionEndStyle.DIAMOND;

		return p;
	}

	@Override
	public boolean sameClassWidth() {
		return isTrue("sameclasswidth");
	}

	@Override
	public final Rankdir getRankdir() {
		return rankdir;
	}

	public final void setRankdir(Rankdir rankdir) {
		this.rankdir = rankdir;
	}

	@Override
	public boolean useOctagonForActivity(Stereotype stereotype) {
		String value = getValue("activityshape");
		if (stereotype != null) {
			checkStereotype(stereotype);
			final String value2 = getValue("activityshape" + stereotype.getLabel(Guillemet.DOUBLE_COMPARATOR));
			if (value2 != null)
				value = value2;

		}
		if ("roundedbox".equalsIgnoreCase(value))
			return false;

		if ("octagon".equalsIgnoreCase(value))
			return true;

		return false;
	}

	private final HColorSet htmlColorSet = HColorSet.instance();

	@Override
	public HColorSet getIHtmlColorSet() {
		return htmlColorSet;
	}

	@Override
	public UStroke useUnderlineForHyperlink() {
		if (valueIs("hyperlinkunderline", "false") == false)
			return new UStroke();
		return null;
	}

	@Override
	public int groupInheritance() {
		final int value = getAsInt("groupinheritance", Integer.MAX_VALUE);
		return value <= 1 ? Integer.MAX_VALUE : value;
	}

	@Override
	public Guillemet guillemet() {
		final String value = getValue("guillemet");
		return Guillemet.GUILLEMET.fromDescription(value);
	}

	@Override
	public boolean handwritten() {
		return isTrue("handwritten");
	}

	@Override
	public String getSvgLinkTarget() {
		return getValue("svglinktarget", "_top");
	}

	@Override
	public String getPreserveAspectRatio() {
		return getValue("preserveaspectratio", DEFAULT_PRESERVE_ASPECT_RATIO);
	}

	@Override
	public String getMonospacedFamily() {
		return getValue("defaultMonospacedFontName", Parser.MONOSPACED);
	}

	@Override
	public int getTabSize() {
		return getAsInt("tabsize", 8);
	}

	@Override
	public int maxAsciiMessageLength() {
		return getAsInt("maxasciimessagelength", -1);
	}

	@Override
	public int colorArrowSeparationSpace() {
		return getAsInt("colorarrowseparationspace", 0);
	}

	@Override
	public SplitParam getSplitParam() {
		final String border = getValue("pageBorderColor");
		final String external = getValue("pageExternalColor");
		final HColor borderColor = border == null ? null : getIHtmlColorSet().getColorOrWhite(border);
		final HColor externalColor = external == null ? null : getIHtmlColorSet().getColorOrWhite(external);
		int margin = getAsInt("pageMargin", 0);
		return new SplitParam(borderColor, externalColor, margin);
	}

	@Override
	public int swimlaneWidth() {
		final String value = getValue("swimlanewidth");
		if ("same".equalsIgnoreCase(value))
			return SWIMLANE_WIDTH_SAME;

		if (value != null && value.matches("\\d+"))
			return Integer.parseInt(value);

		return 0;
	}

	@Override
	public UmlDiagramType getUmlDiagramType() {
		return type;
	}

	@Override
	public HColor hoverPathColor() {
		final String value = getValue("pathhovercolor");
		if (value == null)
			return null;

		return getIHtmlColorSet().getColorOrWhite(value);
	}

	@Override
	public double getPadding() {
		final String name = "padding";
		return getAsDouble(name);
	}

	@Override
	public double getPadding(PaddingParam param) {
		final String name = param.getSkinName();
		return getAsDouble(name);
	}

	private double getAsDouble(final String name) {
		final String value = getValue(name);
		if (value != null && value.matches("\\d+(\\.\\d+)?"))
			return Double.parseDouble(value);

		return 0;
	}

	private int getAsInt(String key, int defaultValue) {
		final String value = getValue(key);
		if (value != null && value.matches("\\d+"))
			return Integer.parseInt(value);

		return defaultValue;
	}

	@Override
	public boolean useRankSame() {
		return false;
	}

	@Override
	public boolean displayGenericWithOldFashion() {
		return valueIs("genericDisplay", "old");
	}

	@Override
	public boolean responseMessageBelowArrow() {
		return isTrue("responsemessagebelowarrow");
	}

	@Override
	public TikzFontDistortion getTikzFontDistortion() {
		final String value = getValue("tikzFont");
		return TikzFontDistortion.fromValue(value);
	}

	@Override
	public boolean svgDimensionStyle() {
		return !valueIs("svgdimensionstyle", "false");
	}

	@Override
	public boolean fixCircleLabelOverlapping() {
		return isTrue("fixcirclelabeloverlapping");
	}

	@Override
	public void setUseVizJs(boolean useVizJs) {
		this.useVizJs = useVizJs;
	}

	@Override
	public boolean isUseVizJs() {
		return useVizJs;
	}

	@Override
	public Padder sequenceDiagramPadder() {
		final double padding = getAsDouble("SequenceMessagePadding");
		final double margin = getAsDouble("SequenceMessageMargin");
		final String borderColor = getValue("SequenceMessageBorderColor");
		final String backgroundColor = getValue("SequenceMessageBackGroundColor");
		if (padding == 0 && margin == 0 && borderColor == null && backgroundColor == null)
			return Padder.NONE;

		final HColor border = borderColor == null ? null : getIHtmlColorSet().getColorOrWhite(borderColor);
		final HColor background = backgroundColor == null ? null : getIHtmlColorSet().getColorOrWhite(backgroundColor);
		final double roundCorner = getRoundCorner(CornerParam.DEFAULT, null);
		return Padder.NONE.withMargin(margin).withPadding(padding).withBackgroundColor(background)
				.withBorderColor(border).withRoundCorner(roundCorner);
	}

	@Override
	public ActorStyle actorStyle() {
		final String value = getValue("actorstyle");
		if ("awesome".equalsIgnoreCase(value))
			return ActorStyle.AWESOME;

		if ("hollow".equalsIgnoreCase(value))
			return ActorStyle.HOLLOW;

		return ActorStyle.STICKMAN;
	}

	@Override
	public void setSvgSize(String origin, String sizeToUse) {
		svgCharSizes.put(StringUtils.manageUnicodeNotationUplus(origin),
				StringUtils.manageUnicodeNotationUplus(sizeToUse));
	}

	@Override
	public String transformStringForSizeHack(String s) {
		for (Entry<String, String> ent : svgCharSizes.entrySet())
			s = s.replace(ent.getKey(), ent.getValue());

		return s;
	}

	@Override
	public LengthAdjust getlengthAdjust() {
		final String value = getValue("lengthAdjust");
		if ("spacingAndGlyphs".equalsIgnoreCase(value))
			return LengthAdjust.SPACING_AND_GLYPHS;

		if ("spacing".equalsIgnoreCase(value))
			return LengthAdjust.SPACING;

		if ("none".equalsIgnoreCase(value))
			return LengthAdjust.NONE;

		return LengthAdjust.defaultValue();
	}

	private double paramSameClassWidth;

	public void setParamSameClassWidth(double width) {
		this.paramSameClassWidth = width;

	}

	@Override
	public final double getParamSameClassWidth() {
		return paramSameClassWidth;
	}

	@Override
	public SheetBuilder sheet(FontConfiguration fontConfiguration, HorizontalAlignment horizontalAlignment,
			CreoleMode creoleMode) {
		final FontConfiguration stereotype = fontConfiguration.forceFont(null, null);
		return sheet(fontConfiguration, horizontalAlignment, creoleMode, stereotype);
	}

	private final Map<Object, CreoleParser> cache = new HashMap<>();

	@Override
	public SheetBuilder sheet(FontConfiguration fontConfiguration, HorizontalAlignment horizontalAlignment,
			CreoleMode creoleMode, FontConfiguration stereo) {
		final Object key = Arrays.asList(horizontalAlignment, creoleMode, fontConfiguration, stereo);
		CreoleParser result = cache.get(key);
		if (result == null) {
			result = new CreoleParser(fontConfiguration, horizontalAlignment, this, creoleMode, stereo);
			cache.put(key, result);
		}
		return result;
	}

	@Override
	public Arrows arrows() {
		if (strictUmlStyle())
			return new ArrowsTriangle();
		return new ArrowsRegular();
	}

}