/*
 * © Copyright 2014 – Urheberrechtshinweis
 * Alle Rechte vorbehalten / All Rights Reserved
 *
 * Programmcode ist urheberrechtlich geschuetzt.
 * Das Urheberrecht liegt, soweit nicht ausdruecklich anders gekennzeichnet, bei Frank Ebner.
 * Keine Verwendung ohne explizite Genehmigung.
 * (vgl. § 106 ff UrhG / § 97 UrhG)
 */

#ifndef MAPMODEL_H
#define MAPMODEL_H

#include <QObject>

#include "../../fixC11.h"

#include "MapLayer.h"
#include "MapModelElement.h"
#include "MapModelListener.h"

#include "MMRoot.h"


#include <Indoor/floorplan/v2/Floorplan.h>
#include <Indoor/floorplan/v2/FloorplanReader.h>
#include <Indoor/floorplan/v2/FloorplanWriter.h>

class MapModel : public QObject, public MapLayerListener {

	Q_OBJECT

private:

	/** the map's root-layer containing all other layers */
	MapLayer* root = nullptr;

	/** the currently selected layer (if any) */
	MapLayer* selLayer = nullptr;

	/** the loaded floorplan */
	Floorplan::IndoorMap* im;

	/** listener */
	std::vector<MapModelListener*> listeners;

public:

	/** ctor */
	MapModel() {
		root = new MapLayerRoot(nullptr);
	}

	virtual ~MapModel() {
		cleanup();
	}

	/** attach a listener */
	void addListener(MapModelListener* l) {
		listeners.push_back(l);
	}

	/** create a new, empty root node */
	void startEmpty() {

		emit aboutToReset();
		cleanup();

		im = new Floorplan::IndoorMap();
		root = new MMRoot(nullptr, im);
		root->addListener(this);
		//root->addSublayer(new MMFloors(root, im));

		emit reset();

	}

	void cleanup() {
		selLayer = nullptr;
		//selElements.clear();
		if (root) {delete root; root = nullptr;}
	}

	/** load map from file */
	void load(const std::string& file) {

		emit aboutToReset();

		cleanup();

		// load the indoor-map using the given XML-file
		im = Floorplan::Reader::readFromFile(file);
		Floorplan::LINT::assertOK(im);
		root = new MMRoot(nullptr, im);
		root->addListener(this);

		emit reset();

	}

	/** save map to file */
	void save(const std::string& file) {

		Floorplan::Writer::writeToFile(im, file);

	}

	float snap(const float val) {
		const float s = 0.1;
		return std::round(val / s) * s;
	}

	/** resize everything within the floorplay by the given factor */
	void resize(const float sx, const float sy, const float sz, const float ox, const float oy, const float oz) {

		for (Floorplan::Floor* f : im->floors) {
			f->atHeight = snap(f->atHeight * sz);
			f->height = snap(f->height * sz);
			for (Floorplan::FloorOutlinePolygon* poly : f->outline) {
				for (Point2& p : poly->poly.points) {
					p.x = snap(p.x * sx + ox);
					p.y = snap(p.y * sy + oy);
				}
			}
			for (Floorplan::AccessPoint* ap : f->accesspoints) {
				ap->pos.x = snap(ap->pos.x * sx + ox);
				ap->pos.y = snap(ap->pos.y * sy + oy);
				ap->pos.z = snap(ap->pos.z * sz + oz);
			}
			for (Floorplan::Beacon* b : f->beacons) {
				b->pos.x = snap(b->pos.x * sx + ox);
				b->pos.y = snap(b->pos.y * sy + oy);
				b->pos.z = snap(b->pos.z * sz + oz);
			}
			for (Floorplan::POI* p : f->pois) {
				p->pos.x = snap(p->pos.x * sx + ox);
				p->pos.y = snap(p->pos.y * sy + oy);
			}
			for (Floorplan::FingerprintLocation* fpl : f->fpLocations) {
				fpl->posOnFloor.x = snap(fpl->posOnFloor.x * sx + ox);
				fpl->posOnFloor.y = snap(fpl->posOnFloor.y * sy + oy);
				fpl->heightAboveFloor = snap(fpl->heightAboveFloor * sz + oz);
			}
			for (Floorplan::FloorObstacle* o : f->obstacles) {
				Floorplan::FloorObstacleLine* line = dynamic_cast<Floorplan::FloorObstacleLine*>(o);
				Floorplan::FloorObstacleDoor* door = dynamic_cast<Floorplan::FloorObstacleDoor*>(o);
				if (line) {
					line->from.x = snap(line->from.x * sx + ox);
					line->from.y = snap(line->from.y * sy + oy);
					line->to.x = snap(line->to.x * sx + ox);
					line->to.y = snap(line->to.y * sy + oy);
				} else if (door) {
					door->from.x = snap(door->from.x * sx + ox);
					door->from.y = snap(door->from.y * sy + oy);
					door->to.x = snap(door->to.x * sx + ox);
					door->to.y = snap(door->to.y * sy + oy);
				}
			}
			for (Floorplan::Stair* s : f->stairs) {
				Floorplan::StairFreeform* stair = dynamic_cast<Floorplan::StairFreeform*>(s);
				for (Floorplan::StairPart& sp : stair->parts) {
					sp.width = snap(sp.width * sx);
					sp.end.x = snap(sp.end.x * sx + ox);
					sp.end.y = snap(sp.end.y * sy + oy);
					sp.end.z = snap(sp.end.z * sz + oz);
					sp.start.x = snap(sp.start.x * sx + ox);
					sp.start.y = snap(sp.start.y * sy + oy);
					sp.start.z = snap(sp.start.z * sz + oz);
				}
			}
			for (Floorplan::Elevator* e : f->elevators) {
				e->center.x = snap(e->center.x * sx + ox);
				e->center.y = snap(e->center.y * sy + oy);
				e->width = snap(e->width * sx);
				e->depth = snap(e->depth * sx);
			}

		}


	}


	void onLayerChanged(MapLayer* layer) override {
		for (MapModelListener* l : listeners) {l->onLayerChanged(layer);}
	}

	void onLayerElementAdded(MapLayer* layer, MapModelElement* elem) override {
		for (MapModelListener* l : listeners) {l->onLayerElementAdded(layer, elem);}
	}

	void onLayerElementRemoved(MapLayer* layer, const MapModelElement* elem) override {
		for (MapModelListener* l : listeners) {l->onLayerElementRemoved(layer, elem);}
	}

	void onLayerVisibilityChanged(MapLayer* layer, const bool visible) override {
		for (MapModelListener* l : listeners) {l->onLayerVisibilityChanged(layer, visible);}
	}

	/** get the constructed map */
	Floorplan::IndoorMap* getMap() const {
		return im;
	}

	/** get the map's root-layer containing all other layers */
	MapLayer* getRootLayer() { return root; }

//	/** get all elements within the currently selected layer */
//	std::vector<MapModelElement*> getSelectedLayerElements() {
//		//return selElements;
//		//return (selLayer) ? (selLayer->getElementsRecursive()) : (std::vector<MapModelElement*>());
////		std::vector<MapModelElement*> elements;
////		root->getVisibleElementsRecursive(elements);
////		return elements;

//	}

	/** get all currently visible elements */
	std::vector<MapModelElement*> getVisibleElements() {
		std::vector<MapModelElement*> elements;
		root->getVisibleElementsRecursive(elements);
		return elements;
	}

	/** set the currently selected layer */
	void setSelectedLayer(MapLayer* ml) {
		//selElements.clear();
		//for (MapModelElement* el : ml->getElementsRecursive()) {selElements.push_back(el);}
		selLayer = ml;
	}

	/** get the currently selected layer */
	MapLayer* getSelectedLayer() const {
		return selLayer;
	}

	void reselect() {
		setSelectedLayer(selLayer);
		emit reset();
	}

signals:

	void aboutToReset();
	void reset();

};

#endif // MAPMODEL_H