/*
 * Copyright (c) 2015 Tricoire Sebastien 3dsman@free.fr
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 */

#include "OE_controller.h"
#include <iostream>
#include <typeinfo>

#include "actions/OE_actionsCurves.h"
#include "actions/OE_actionsStitchs.h"
#include "actions/OE_actionsLineStitchs.h"
#include "actions/OE_actionsBirailStitchs.h"
#include "actions/OE_actionsSelection.h"
#include "actions/OE_actionsThreads.h"


//OE_controller::OE_controller(OE_display * display, OE_document* document ) : comm("/dev/ttyUSB0", 80, 10)
  //OE_controller::OE_controller(OE_display * display, OE_document* document ) : comm("/dev/tty", 80, 10)
//OE_controller::OE_controller(OE_display * display, OE_document* document ) : comm("20:15:05:11:28:40", 80, 30)
//OE_controller::OE_controller(OE_display * display, OE_document* document ) : comm("/dev/rfcomm1", 80, 30)
OE_controller::OE_controller(OE_display * display, OE_document* document ) : comm(getenv("SERIALPORT")?getenv("SERIALPORT"):"/dev/rfcomm0", 80, 30)

{
	this->display = display;
	this->document = document;
	//OE_linestitch::initPatterns();

	// TODO remove
	if (document && document->threads.empty())
		document->addThread(new OE_thread(100,100,100,2));
}

OE_controller::~OE_controller()
{
}

void OE_controller::setDocument(OE_document* document)
{
    this->document = document;
}

/*
void OE_controller::newSubCurve(OE_curve* curve, float curveStart, float curveEnd, bool reverse)
{
	addAction(new OE_actionNewSubCurve(curve, curveStart, curveEnd, reverse));
}

void OE_controller::newSubCurve(int ncurve, float curveStart, float curveEnd, bool reverse)
{
	newSubCurve(getCurve(ncurve), curveStart, curveEnd, reverse);
}
*/
void OE_controller::newBirailStitch(bool reverse1, bool reverse2, float offset1, float offset2, float len)
{
    clearUndoActionStack();
    addAction(new OE_actionNewBirailStitch(reverse1, reverse2, offset1, offset2, len));
}
/*
void OE_controller::newBirailStitch(int ncurve1, int ncurve2, bool reverse1, bool reverse2, float offset1, float offset2, float len)
{
	newBirailStitch(getCurve(ncurve1), getCurve(ncurve2), reverse1, reverse2, offset1, offset2, len);
}
*/
/*
void OE_controller::newJoinCurve(OE_subcurve* curve1, OE_subcurve* curve2)
{
	addAction(new OE_actionNewJoinCurve(curve1, curve2));
}

void OE_controller::newJoinCurve(int ncurve1, int ncurve2)
{
	newJoinCurve(getCurve(ncurve1), getCurve(ncurve2));
}
*/
void OE_controller::newLineStitch( float len, float width, OE_pattern* pattern, unsigned patternSteps, float xOffset, float yOffset)
{
    clearUndoActionStack();
	addAction(new OE_actionNewLineStitch( len, width, pattern, patternSteps, xOffset, yOffset));
}

void OE_controller::newLineStitch(int ncurve, float len, float width, OE_pattern* pattern, unsigned patternSteps, float xOffset, float yOffset)
{
	newLineStitch(len, width, pattern, patternSteps, xOffset, yOffset);
}

void OE_controller::setStitchThread(OE_stitchs* stitch, OE_thread * thread)
{
	addAction(new OE_actionSetStitchThread(stitch, thread));
}

void OE_controller::setStitchThread(int nstitch, int nthread)
{
	setStitchThread(getStitch(nstitch), getThread(nthread));
}

void OE_controller::setCloseCurve(OE_curve* curve, bool closed)
{
    addAction(new OE_actionSetCloseCurve(curve, closed));
}

void OE_controller::setCloseCurve(int ncurve, bool closed)
{
    setCloseCurve(getCurve(ncurve), closed);
}

void OE_controller::toggleCloseSelectedCurve()
{
    OE_curve* curve = document->selectedCurves.back();
    if (curve) setCloseCurve(curve, !curve->getClosed());
}



bool OE_controller::initNewDocument()
{
    if (document)
    {
        OE_actions::curDocument = document; // TODO: REMOVE, UGLY AS FUCK !!!!

        addAction(new OE_actionNewThread(new OE_thread(220,120,20,2)));

        document->setZeroPoint(vector_2d(0,0));
        return true;
    }
    return false;
}

bool OE_controller::setDefault()
{
	OE_birailstitch::defaultLen = 1;
	OE_birailstitch::defaultMaxlen = 0;
	return true;
}

OE_curve* OE_controller::getCurve (int index)
{
	if (document && index<0)
		index = document->curves.size() + index;
	if ((document)&&(0<=index && index<document->curves.size()))
	{
        std::list<OE_pointcurve*>::iterator curve = document->curves.begin();
		for(unsigned i=0; i<index;i++)
			curve++;
		return (*curve);
	}

	return nullptr;
}

OE_pointcurve* OE_controller::getPointcurve (unsigned index)
{
        return (dynamic_cast<OE_pointcurve*> (getCurve (index)));
}

OE_subcurve* OE_controller::getSubcurve (unsigned index)
{
        return (dynamic_cast<OE_subcurve*> (getCurve (index)));
}

OE_joincurve* OE_controller::getJoincurve (unsigned index)
{
        return (dynamic_cast<OE_joincurve*> (getCurve (index)));
}

OE_stitchs* OE_controller::getStitch (int index)
{
	if (document && index<0)
		index = document->stitchs.size() + index;
	if ((document)&&(0<=index && index<document->stitchs.size()))
	{
		std::list<OE_stitchs*>::iterator stitch = document->stitchs.begin();
		for(unsigned i=0; i<index;i++)
			stitch++;
		return (*stitch);
    }

	return nullptr;
}

OE_linestitch* OE_controller::getLineStitch (unsigned index)
{
		return (dynamic_cast<OE_linestitch*> (getStitch(index)));
}

OE_birailstitch* OE_controller::getBirailStitch (unsigned index)
{
        return (dynamic_cast<OE_birailstitch*> (getStitch(index)));
}

OE_linkstitch* OE_controller::getLinkStitch (unsigned index)
{
        return (dynamic_cast<OE_linkstitch*> (getStitch(index)));
}

OE_thread* OE_controller::getThread (int index)
{
	if (document && index<0)
		index = document->threads.size() + index;
	if ((document)&&(0<=index && index<document->threads.size()))
	{
		std::list<OE_thread*>::iterator thread = document->threads.begin();
		for(unsigned i=0; i<index;i++)
			thread++;
		return (*thread);
    }

	return nullptr;
}


OE_pattern* OE_controller::getPattern (int index)
{
	if (document)
	{
		if (index<0)
			index = document->patterns.size() + index;

		if (0<=index && index<document->patterns.size())
		{
			std::list<OE_pattern*>::iterator pattern = document->patterns.begin();
			for(unsigned i=0; i<index;i++)
				pattern++;
			return (*pattern);
		}
	}
	return nullptr;
}

bool OE_controller::clearUndoActionStack()
{
    if (document)
    {
        OE_document::ScopeLock lock(*document);
        //flush the undoActionStack
        while(!(document->undoActionsStack.empty()))
        {
            delete document->undoActionsStack.back();
            document->undoActionsStack.pop_back();
        }
    }
}

bool OE_controller::addAction(OE_actions * action)
{
    if (document)
    {
		OE_document::ScopeLock lock(*document);
		//flush the undoActionStack
        while(!(document->undoActionsStack.empty()))
        {
            delete document->undoActionsStack.back();
            document->undoActionsStack.pop_back();
        }

        //push the new action to the active stack
        document->activeActionsStack.push_front(action);
    }
}

bool OE_controller::undoAction()
{
	if (document)
	{
		OE_document::ScopeLock lock(*document);
		if (document->activeActionsStack.size())
		{
			// get and undo the last action from active action stack
			OE_actions * action = *document->activeActionsStack.begin();
			if (action)
			{
				action->undo();

				// move the action from active to undo action stack
				document->activeActionsStack.pop_front();
				document->undoActionsStack.push_front(action);
			}
		}
	}
}

bool OE_controller::redoAction()
{
	if (document)
	{
		OE_document::ScopeLock lock(*document);
		if (document->undoActionsStack.size())
		{
			// get and redo the last action from undo action stack
			OE_actions * action = *document->undoActionsStack.begin();

			action->redo();

			// move the action from undo to active action stack
			document->undoActionsStack.pop_front();
			document->activeActionsStack.push_front(action);
		}
    }
}

bool OE_controller::selectCurve( OE_pointcurve* curve, bool replace)
{
    std::list<OE_pointcurve*> tmp;
    tmp.push_back(curve);

    return selectCurves(tmp, replace);
}

bool OE_controller::selectCurves( std::list<OE_pointcurve*> curves, bool replace)
{
    if (document)
    {
        addAction(new OE_actionSelectionAddCurves(curves, replace));
        return true;
    }
    return false;
}

bool OE_controller::unselectCurves( std::list<OE_pointcurve*> curves)
{
    if (document)
    {
        addAction(new OE_actionSelectionRemoveCurves(curves));
        return true;
    }
    return false;
}

bool OE_controller::clearSelectCurves()
{
    if (document)
    {
        addAction(new OE_actionSelectionClearCurves());
        return true;
    }
    return false;
}

bool OE_controller::selectStitch( OE_stitchs* stitch, bool replace)
{
    std::list<OE_stitchs*> tmp;
    tmp.push_back(stitch);

    return selectStitches(tmp, replace);
}

bool OE_controller::selectStitches( std::list<OE_stitchs*> stitches, bool replace)
{
    if (document)
    {
        addAction(new OE_actionSelectionAddStitches(stitches, replace));
        return true;
    }
    return false;
}

bool OE_controller::unselectStitches( std::list<OE_stitchs*> stitches)
{
    if (document)
    {
        addAction(new OE_actionSelectionRemoveStitches(stitches));
        return true;
    }
    return false;
}

bool OE_controller::clearSelectStitches()
{
    if (document)
    {
        addAction(new OE_actionSelectionClearStitches());
        return true;
    }
    return false;
}

bool OE_controller::clearSelection()
{
    if (document)
    {
        addAction(new OE_actionSelectionClear());
        return true;
    }
    return false;
}


BoundingBox OE_controller::getSelectionBoundingBox()
{
	BoundingBox boundingBox;
	for (auto curve : document->selectedCurves)
	{
		boundingBox += curve->getBound();
	}
	for (auto stitch : document->selectedStitchs)
	{
		boundingBox += stitch->getBound();
	}
	return boundingBox;
}


OE_actions * OE_controller::getLastAction()
{
    if (document && document->activeActionsStack.size())
    {
        return *document->activeActionsStack.begin();
    }
    return 0;
}

bool OE_controller::editActionMovePointCurve(vector_2d offset)
{
    OE_actionMovePointCurve* actionMovePointCurve = dynamic_cast<OE_actionMovePointCurve*>(getLastAction());
    if (actionMovePointCurve)
    {
            actionMovePointCurve->setMove( offset);
            return true;
    }
    return false;
}

bool OE_controller::editActionMoveSelection(vector_2d offset)
{
	OE_actionMoveSelection* actionMoveSelection = dynamic_cast<OE_actionMoveSelection*>(getLastAction());
	if (actionMoveSelection)
	{
			actionMoveSelection->setMove(offset);
			return true;
	}
	return false;
}

bool OE_controller::editActionScaleSelection(vector_2d ratio)
{
	OE_actionScaleSelection* actionScaleSelection = dynamic_cast<OE_actionScaleSelection*>(getLastAction());
	if (actionScaleSelection)
	{
			actionScaleSelection->setScale(ratio);
			return true;
	}
	return false;
}

bool OE_controller::editActionSetSubcurvePos(float val)
{
    OE_actionSetSubcurvePos* actionSetSubcurvePos = dynamic_cast<OE_actionSetSubcurvePos*>(getLastAction());
    if (actionSetSubcurvePos)
    {
        actionSetSubcurvePos->setPos(val);
        return true;
    }
    return false;
}

bool OE_controller::editActionSetSubcurvePosSwitchDir()
{
    OE_actionSetSubcurvePos* actionJoincurveSetSubcurve = dynamic_cast<OE_actionSetSubcurvePos*>(getLastAction());
    if (actionJoincurveSetSubcurve)
    {
        actionJoincurveSetSubcurve->setInvertDir(!actionJoincurveSetSubcurve->getInvertDir());
        return true;
    }
    return false;
}

bool OE_controller::editActionAddSubcurvePosEnd(float val)
{
    OE_actionJoincurveAddSubCurve* actionJoincurveAddSubcurve = dynamic_cast<OE_actionJoincurveAddSubCurve*>(getLastAction());
    if (actionJoincurveAddSubcurve)
    {
        actionJoincurveAddSubcurve->setEnd(val);
        return true;
    }
    return false;
}


bool OE_controller::editActionAddSubcurvePosSwitchDir()
{
    OE_actionJoincurveAddSubCurve* actionJoincurveAddSubcurve = dynamic_cast<OE_actionJoincurveAddSubCurve*>(getLastAction());
    if (actionJoincurveAddSubcurve)
    {
        actionJoincurveAddSubcurve->setDir(!actionJoincurveAddSubcurve->getDir());
        return true;
    }
    return false;
}


bool OE_controller::editActionSetLinestitchWidth(float val, bool offset)
{
	OE_actionSetLineStitchWidth* actionSetLineStitchWidth = dynamic_cast<OE_actionSetLineStitchWidth*>(getLastAction());
	if (actionSetLineStitchWidth)
	{
		if (offset)
			actionSetLineStitchWidth->offsetWidth(val);
		else
			actionSetLineStitchWidth->setWidth(val);
		return true;
	}
	return false;
}


bool OE_controller::refreshStitchs()
{
	if (document)
	{
		std::list<OE_stitchs*>::iterator stitch = document->stitchs.begin();
		
		while (stitch != document->stitchs.end())
        {
			(*stitch)->refresh();
			stitch++;
		}
	}

	return true;
}
/*
bool OE_controller::setThreadColor(unsigned index, unsigned char r, unsigned char g, unsigned char b )
{
	OE_thread * tmpthread = getThread(index);
	if (!tmpthread)return false;
	
	tmpthread->setColor(r, g, b);

	return true;
}

bool OE_controller::setThreadWidth(unsigned index, float width)
{
	OE_thread * tmpthread = getThread(index);
	if (!tmpthread)return false;
	
	tmpthread->setWidth(width);

	return true;
}
*/
bool OE_controller::setsubcurvePos( unsigned index, float start, float end)
{
	OE_subcurve * tmpcurve = getSubcurve(index);
	if (!tmpcurve)return false;
	
	tmpcurve->setStart(start);
	tmpcurve->setEnd(end);
	return true;
}

vector_2dt OE_controller::getClosestPoint(OE_curve* curve, vector_2d point)
{
    if (curve)
        return curve->closestPoint(point);
}

OE_curve* OE_controller::getClosestCurve(vector_2d point, vector_2dt &closestPoint)
{
    if (document)
    {
        std::list<OE_pointcurve*>::iterator curve = document->curves.begin();
        vector_2dt tmpPoint;
        //vector_2dt minPoint;
        double minDistance;
        double tmpDistance;
        OE_curve* minCurve;

        if (curve != document->curves.end())
        {
            closestPoint = (*curve)->closestPoint(point);
            minDistance = (closestPoint.v-point).len();
            minCurve = *curve;
            curve++;
        }
        while (curve != document->curves.end())
        {
            tmpPoint = (*curve)->closestPoint(point);
            tmpDistance = (tmpPoint.v-point).len();
            if (tmpDistance < minDistance)
            {
                closestPoint = tmpPoint;
                minDistance = tmpDistance;
                minCurve = *curve;
            }
            curve++;
        }
        return (minCurve);
    }
    return nullptr;

}

bool OE_controller::generateInstructions()
{
		
	if (document)
	{
		document->instPoints.clear();
		for (unsigned i = 0; i < document->instCommand.size(); i++) {
			delete (document->instCommand.at(i));
		}
		document->instCommand.clear();
		
		std::list<OE_stitchs*>::iterator stitch = document->stitchs.begin();
		
		OE_thread * instThread = (*stitch)->getThread();
		if(!instThread)
			instThread = document->threads.front();
		
		document->instCommand.push_back(new OE_start(document->instPoints.size(), instThread->getColor()));
		
		while (stitch != document->stitchs.end())
		{
			(*stitch)->refresh();
			if((*stitch)->check()&&(*stitch)->getNpts()>0)
			{
				OE_thread * curThread = (*stitch)->getThread();
				if (!curThread)
				{
					curThread = document->threads.front();
				}
				
				if ((curThread!=instThread))
				{
					instThread = curThread;
					document->instCommand.push_back(new OE_waitcolor(document->instPoints.size(), instThread->getColor()));
				}								
				std::vector<vector_2d> points = (*stitch)->getPoints();
			
				document->instPoints.insert( document->instPoints.end(), points.begin(), points.end() );

			}
			stitch++;
		}
		
		vector_2d zero = document->getZeroPoint();
		float size = document->getPulseByMm();
		for ( unsigned i = 0; i < document->instPoints.size(); i++)
		{
			document->instPoints.at(i) = (document->instPoints.at(i) - zero)*size;
		}
	}
	return true;
}

uint8_t int7(int i) // transform int32 to int7
{
	if (i>=0)
		return i;
	int8_t i8 = 2*i;
	return (*(uint8_t*)&i8)>>1;
}

void OE_controller::sendInstPoint()
{
	static bool running = false;
	static int oldX, oldY;
	static unsigned sndPoint;
	static uint8_t dxys[32];
	static bool started = false;

	if (!running)
	{
		std::cout << "sendInstPoint x " << document->instPoints.size() <<std::endl;
		comm.stopMove();
		if (!comm.ack()) std::cerr << "Can't set pos" << std::endl;
		comm.setPos(0, 0);
		if (!comm.ack()) std::cerr << "Can't set pos" << std::endl;
		comm.setNPoint(0);
		if (!comm.ack()) std::cerr << "Can't set point" << std::endl;
		comm.deletePoints();
		if (!comm.ack()) std::cerr << "Can't delete points" << std::endl;
		oldX = oldY = 0;
		sndPoint = 0;
		running = true;
	} else {
		document->curPoint = comm.info.nPoint;
		int x, y, dx, dy, bigdx, bigdy;
		unsigned cmdPoints = 0;
		if (!started && comm.info.spaceSize && (comm.info.freeSpace<512) ) {
			comm.startMove();
			if (!comm.ack()) std::cerr << "Can't start" << std::endl;
			started = true;
		}
		if ((sndPoint<document->instPoints.size()) && comm.info.spaceSize && (comm.info.freeSpace>64))
		{
			while (sndPoint<document->instPoints.size())
			{
				x = roundf(document->instPoints.at(sndPoint).x);
				y = roundf(-document->instPoints.at(sndPoint).y);
				dx = x-oldX;
				dy = y-oldY;
				if ((dx<-64)||(63<dx)||(dy<-64)||(63<dy))
				{
					bigdx = (dx+(dx>=0?0:1))/64;
					bigdy = (dy+(dy>=0?0:1))/64;
					dx -= 64*bigdx;
					dy -= 64*bigdy;
					if (cmdPoints==15)
					{
						comm.addPoints(dxys, 15);
						if (!comm.ack()) std::cerr << "Can't add points" << std::endl;
						return;
					}
					dxys[2*cmdPoints] = 0x80|int7(bigdx);
					dxys[2*cmdPoints+1] = int7(bigdy);
					cmdPoints++;
				}
				dxys[2*cmdPoints] = int7(dx);
				dxys[2*cmdPoints+1] = int7(dy);
				cmdPoints++;
				sndPoint++;
				oldX = x;
				oldY = y;
				if (cmdPoints==16)
				{
					comm.addPoints(dxys, 16);
					if (!comm.ack()) std::cerr << "Can't add points" << std::endl;
					return;
				}
			}
			if (cmdPoints)
			{
				comm.addPoints(dxys, cmdPoints);
				if (!comm.ack()) std::cerr << "Can't add points" << std::endl;
				return;
			}
		}
	}
}