#ifndef GRAPH_VIEW_STYLE_H
#define GRAPH_VIEW_STYLE_H

#include <map>
#include <memory>

#include "utility/math/Vector2.h"

#include "data/graph/Node.h"
#include "data/parser/AccessKind.h"

class GraphViewStyleImpl;

class GraphViewStyle
{
public:
	static Vec2i alignOnRaster(Vec2i position);

	struct NodeMargins
	{
		NodeMargins();

		int left;
		int right;

		int top;
		int bottom;

		int spacingX;
		int spacingY;
		int spacingA;

		int minWidth;

		float charWidth;
		float charHeight;

		int iconWidth;
	};

	struct NodeColor
	{
		std::string fill;
		std::string border;
		std::string text;
		std::string icon;
		std::string hatching;
	};

	struct NodeStyle
	{
		NodeStyle();

		NodeColor color;

		int cornerRadius;

		int borderWidth;
		bool borderDashed;

		std::string fontName;
		size_t fontSize;
		bool fontBold;

		Vec2i textOffset;

		std::string iconPath;
		Vec2i iconOffset;
		size_t iconSize;

		bool hasHatching;
	};

	struct EdgeStyle
	{
		EdgeStyle();

		std::string color;

		float width;
		int zValue;

		int arrowLength;
		int arrowWidth;
		bool arrowClosed;

		int cornerRadius;
		int verticalOffset;

		Vec2i originOffset;
		Vec2i targetOffset;
	};

	static std::shared_ptr<GraphViewStyleImpl> getImpl();
	static void setImpl(std::shared_ptr<GraphViewStyleImpl> impl);

	static void loadStyleSettings();

	static float getCharWidthForNodeType(Node::NodeType type);
	static float getCharHeightForNodeType(Node::NodeType type);

	static size_t getFontSizeForNodeType(Node::NodeType type);
	static size_t getFontSizeOfAccessNode();
	static size_t getFontSizeOfExpandToggleNode();
	static size_t getFontSizeOfCountCircle();
	static size_t getFontSizeOfQualifier();
	static size_t getFontSizeOfTextNode();

	static std::string getFontNameForNodeType(Node::NodeType type);
	static std::string getFontNameOfAccessNode();
	static std::string getFontNameOfExpandToggleNode();
	static std::string getFontNameOfTextNode();

	static NodeMargins getMarginsForNodeType(Node::NodeType type, bool hasChildren);
	static NodeMargins getMarginsOfAccessNode(AccessKind access);
	static NodeMargins getMarginsOfExpandToggleNode();
	static NodeMargins getMarginsOfBundleNode();
	static NodeMargins getMarginsOfTextNode();

	static NodeStyle getStyleForNodeType(
		Node::NodeType type, bool defined, bool isActive, bool isFocused, bool hasChildren, bool hasQualifier);
	static NodeStyle getStyleOfAccessNode();
	static NodeStyle getStyleOfExpandToggleNode();
	static NodeStyle getStyleOfCountCircle();
	static NodeStyle getStyleOfBundleNode(bool isFocused);
	static NodeStyle getStyleOfQualifier();
	static NodeStyle getStyleOfTextNode();

	static EdgeStyle getStyleForEdgeType(Edge::EdgeType type, bool isActive, bool isFocused, bool isTrailEdge);

	static int toGridOffset(int x);
	static int toGridSize(int x);
	static int toGridGap(int x);

	static float getZoomFactor();

	static const NodeColor& getNodeColor(const std::string& typeStr, bool focus);
	static const std::string& getEdgeColor(const std::string& typeStr, bool focus);

	static int s_gridCellSize;
	static int s_gridCellPadding;

private:
	static void addIcon(Node::NodeType type, bool hasChildren, NodeStyle* style);

	static std::map<Node::NodeType, float> s_charWidths;
	static std::map<Node::NodeType, float> s_charHeights;

	static std::shared_ptr<GraphViewStyleImpl> s_impl;

	static int s_fontSize;
	static std::string s_fontName;
	static float s_zoomFactor;

	static std::map<std::string, NodeColor> s_nodeColors;
	static std::map<std::string, std::string> s_edgeColors;
};

#endif // GRAPH_VIEW_STYLE_H