#ifndef MV2DELEMENTFLOOROBSTACLELINE_H
#define MV2DELEMENTFLOOROBSTACLELINE_H

#include "MV2DElement.h"
#include "MapViewElementHelper.h"
#include <Indoor/floorplan/v2/Floorplan.h>

class MV2DElementFloorObstacleLine : public MV2DElement {

private:

	int selPoint = -1;
	Floorplan::FloorObstacleLine* fo;

public:

	/** ctor */
	MV2DElementFloorObstacleLine(Floorplan::FloorObstacleLine* fo) : fo(fo) {;}

	/** get the element's 3D bounding box */
	BBox2 getBoundingBox() const override {
		BBox2 bbox;
		bbox.add(fo->from);
		bbox.add(fo->to);
		return bbox;
	}

	/** get the element's minimal distance (nearest whatsoever) to the given point */
	float getMinDistanceXY(const Point2 p) const override {
		return MapElementHelper::getLineDistanceXY(fo->from, fo->to, p);
	}



	/** repaint me */
	void paint(Painter& p) override {

		// selected endpoints?
		if (hasFocus()) {
			p.setPenBrush(Qt::NoPen, CFG::SEL_COLOR);
			if (selPoint == 0) {p.drawCircle(fo->from);}
			if (selPoint == 1) {p.drawCircle(fo->to);}
		}


		p.setPenBrush(MapElementHelper::getPen(fo->material, fo->type, hasFocus()), Qt::NoBrush);
		p.drawLine(fo->from, fo->to);

//		// door?
//		if (fo->type == Floorplan::ObstacleType::DOOR) {
//			paintDoor(p);
//		} else {
//			p.setPenBrush(MapElementHelper::getPen(fo->material, fo->type, hasFocus()), Qt::NoBrush);
//			p.drawLine(fo->from, fo->to);
//		}

		// available endpoints
		if (hasFocus()) {
			p.setPenBrush(Qt::black, Qt::NoBrush);
			p.drawCircle(fo->from);
			p.drawCircle(fo->to);
		}

	}

	void paintDoor(Painter& p) {

		QPen pen;
		pen.setColor(QColor(0.5,0.5,0.5));
		pen.setStyle(Qt::PenStyle::DotLine);
		p.setPenBrush(pen, Qt::NoBrush);


		// opening indicator
		const float open = M_PI / 4;
		const float len = (fo->to - fo->from).length();
		const float angle1 = std::atan2(fo->to.y-fo->from.y, fo->to.x-fo->from.x);
		const float angle2 = angle1 + open;
		const Point2 pOpen = Point2( std::cos(angle2) * len, std::sin(angle2) * len ) + fo->from;

		p.drawLine(fo->from, fo->to);
		p.drawLine(fo->from, pOpen);

		p.drawArc(fo->from, len, angle1, open);
		//p.drawLine(fo->to, pOpen);

	}

	virtual void onFocus() override {
		;
	}

	virtual void onUnfocus() override {
		selPoint = -1;	// clear selection
	}

	/** mouse pressed at the given point */
	virtual void mousePressed(MapView2D* v, const Point2 p) override {
		(void) v;
		(void) p;

	}

	/** mouse moved to the given point */
	virtual void mouseMove(MapView2D* v, const Point2 _p) override {
		(void) v;
		if (selPoint == -1) {return;}
		const Point2 p = v->getScaler().snap(_p);
		if (selPoint == 0) {fo->from.x = p.x;	fo->from.y = p.y;}
		if (selPoint == 1) {fo->to.x = p.x;		fo->to.y = p.y;}
	}

	/** mouse released */
	virtual void mouseReleased(MapView2D* v, const Point2 _p) override {
//		(void) v;
//		if (selPoint == -1) {return;}
//		const Point3 p = Scaler::snap(_p, CFG::MOVE_SNAP_SIZE_M);
//		if (selPoint == 0) {fo.from.x = p.x; fo.from.y = p.y;}
//		if (selPoint == 1) {fo.to.x = p.x; fo.to.y = p.y;}

		// select a new point on mouse-release (more robust than on mouse-press)
		const float t = v->getScaler().sm(CFG::SEL_THRESHOLD_SIZE_PX);
		const float l1 = _p.getDistance(fo->from);
		const float l2 = _p.getDistance(fo->to);
		if		(l1 < l2 && l1 <= t)	{selPoint = 0;}
		else if	(l2 < l1 && l2 <= t)	{selPoint = 1;}
		else							{selPoint = -1;}

	}

	virtual bool keyPressEvent(MapView2D* v, QKeyEvent *e) override {
		(void) v;
		(void) e;
		return false;
	}

};

#endif // MV2DELEMENTFLOOROBSTACLELINE_H