#include "xml-vym.h"

#include <QMessageBox>

#include <QColor>

#include <QTextStream>

#include <iostream>

#include <typeinfo>

#include "branchitem.h"

#include "misc.h"

#include "settings.h"

#include "linkablemapobj.h"

#include "mainwindow.h"

#include "version.h"

#include "xlinkitem.h"

extern Main *mainWindow;

extern Settings settings;

extern QString vymVersion;

bool parseVYMHandler::startDocument()

{

    errorProt = "";

    state = StateInit;

    laststate = StateInit;

	stateStack.clear();

	stateStack.append(StateInit);

	htmldata="";

	isVymPart=false;

	useProgress=false;

    return true;

}

bool parseVYMHandler::startElement  ( const QString&, const QString&,

                    const QString& eName, const QXmlAttributes& atts ) 

{

    QColor col;

	/* Testing

	cout << "startElement <"<< qPrintable(eName)

		<<">  state="<<state 

		<<"  laststate="<<stateStack.last()

		<<"   loadMode="<<loadMode

	//	<<"       line="<<QXmlDefaultHandler::lineNumber()

		<<endl;

	*/	

	stateStack.append (state);	

    if ( state == StateInit && (eName == "vymmap")  ) 

	{

        state = StateMap;

		branchesTotal=0;			//FIXME-3 what if we load a .vyp ?

		branchesCounter=0;

		if (loadMode==NewMap )

		{

			// Create mapCenter

			model->clear();

			lastBranch=NULL;

			if (!atts.value( "author").isEmpty() )

				model->setAuthor(atts.value( "author" ) );

			if (!atts.value( "comment").isEmpty() )

				model->setComment (atts.value( "comment" ) );

			if (!atts.value( "branchCount").isEmpty() )

			{

				branchesTotal=atts.value("branchCount").toInt();

				if (branchesTotal>10)

				{

					useProgress=true;

					mainWindow->setProgressMaximum (branchesTotal);

				}

			} 

			if (!atts.value( "backgroundColor").isEmpty() )

			{

				col.setNamedColor(atts.value("backgroundColor"));

				model->getScene()->setBackgroundBrush(col);

			}	    

			if (!atts.value( "selectionColor").isEmpty() )

			{

				col.setNamedColor(atts.value("selectionColor"));

				model->setSelectionColor(col);

			}	    

			if (!atts.value( "linkColorHint").isEmpty() ) 

			{

				if (atts.value("linkColorHint")=="HeadingColor")

					model->setMapLinkColorHint(LinkableMapObj::HeadingColor);

				else

					model->setMapLinkColorHint(LinkableMapObj::DefaultColor);

			}

			if (!atts.value( "linkStyle").isEmpty() ) 

				model->setMapLinkStyle(atts.value("linkStyle"));

			if (!atts.value( "linkColor").isEmpty() ) 

			{

				col.setNamedColor(atts.value("linkColor"));

				model->setMapDefLinkColor(col);

			}	

			if (!atts.value( "defXLinkColor").isEmpty() ) 

			{

				col.setNamedColor(atts.value("defXLinkColor"));

				model->setMapDefXLinkColor(col);

			}	

			if (!atts.value( "defXLinkWidth").isEmpty() ) 

				model->setMapDefXLinkWidth(atts.value("defXLinkWidth").toInt ());

			if (!atts.value( "mapZoomFactor").isEmpty() ) 

				model->setMapZoomFactor(atts.value("mapZoomFactor").toDouble());

		}	

		// Check version

		if (!atts.value( "version").isEmpty() ) 

		{

			if (!checkVersion(atts.value("version")))

				QMessageBox::warning( 0, "Warning: Version Problem" ,

				   "<h3>Map is newer than VYM</h3>"

				   "<p>The map you are just trying to load was "

				   "saved using vym " +atts.value("version")+". "

				   "The version of this vym is " + vymVersion + 

				   ". If you run into problems after pressing "

				   "the ok-button below, updating vym should help.");

			else	   

				model->setVersion(atts.value( "version" ));

		}

	} else if ( eName == "select" && state == StateMap ) 

	{

		state=StateMapSelect;

	} else if ( eName == "setting" && state == StateMap ) 

	{

		state=StateMapSetting;

		if (loadMode==NewMap)

			readSettingAttr (atts);

	} else if ( eName == "mapcenter" && state == StateMap ) 

	{

		state=StateMapCenter;

		if (loadMode==NewMap)

		{	

			// Really use the found mapcenter as MCO in a new map

			lastBranch=model->createMapCenter(); 

		} else

		{

			// Treat the found mapcenter as a branch 

			// in an existing map

			BranchItem *bi=model->getSelectedBranch();	

			if (bi)

			{

				lastBranch=bi;

				if (loadMode==ImportAdd)

				{

					// Import Add

					lastBranch=model->createBranch(lastBranch);

				} else  

				{

					// Import Replace 

					// Parser should not be called with ImportReplace any longer,

					// that's done in VymModel now.

					qDebug()<<"xml-vym:  ImportReplace  ?!"; 

				}

			} else

				// add mapCenter without parent

				lastBranch=model->createMapCenter(); 

		}		

		readBranchAttr (atts);

	} else if ( 

		(eName == "standardflag" ||eName == "standardFlag") && 

		(state == StateMapCenter || state==StateBranch)) 

	{

		state=StateStandardFlag;

	} else if ( eName == "heading" && (state == StateMapCenter||state==StateBranch)) 

	{

		laststate=state;

		state=StateHeading;

		if (!atts.value( "textColor").isEmpty() ) 

		{

			col.setNamedColor(atts.value("textColor"));

			lastBranch->setHeadingColor(col );

		}	    

	} else if ( eName == "note" && 

				(state == StateMapCenter ||state==StateBranch))

	{	// only for backward compatibility (<1.4.6). Use htmlnote now.

		state=StateNote;

		if (!readNoteAttr (atts) ) return false;

	} else if ( eName == "htmlnote" && state == StateMapCenter) 

	{

		laststate=state;

		state=StateHtmlNote;

    } else if ( eName == "floatimage" && 

				(state == StateMapCenter ||state==StateBranch)) 

	{

		state=StateImage;

		lastImage=model->createImage(lastBranch);

		if (!readImageAttr(atts)) return false;

	} else if ( (eName == "branch"||eName=="floatimage") && state == StateMap) 

	{

		// This is used in vymparts, which have no mapcenter or for undo

		isVymPart=true;

		TreeItem *ti=model->getSelectedItem();

		if (!ti)

		{

			// If a vym part is _loaded_ (not imported), 

			// selection==lmo==NULL

			// Treat it like ImportAdd then...

			loadMode=ImportAdd;

			// FIXME-3 lmo=model->first()->getLMO();		

			// Do we really have no MCO when loading?????

			cout << "xml-vym aborted\n";

			return false;

		}	

		if (ti && ti->isBranchLikeType() )

		{

			lastBranch=(BranchItem*)ti;

			if (eName=="branch")

			{

				state=StateBranch;

				if (loadMode==ImportAdd)

				{

					lastBranch=model->createBranch(lastBranch);

					if (insertPos>=0)

						model->relinkBranch (lastBranch,(BranchItem*)ti,insertPos);

				} else

					model->clearItem (lastBranch);

				readBranchAttr (atts);

			} else if (eName=="floatimage")

			{

				state=StateImage;

				lastImage=model->createImage (lastBranch);

				if (!readImageAttr(atts)) return false;

			} else return false;

		} else return false;

	} else if ( eName == "branch" && state == StateMapCenter) 

	{

		state=StateBranch;

		lastBranch=model->createBranch(lastBranch);

		readBranchAttr (atts);

	} else if ( eName == "htmlnote" && state == StateBranch) 

	{

		laststate=state;

		state=StateHtmlNote;

		no.clear();

		if (!atts.value( "fonthint").isEmpty() ) 

			no.setFontHint(atts.value ("fonthint") );

	} else if ( eName == "frame" && (state == StateBranch||state==StateMapCenter)) 

	{

		laststate=state;

		state=StateFrame;

		if (!readFrameAttr(atts)) return false;

    } else if ( eName == "xlink" && state == StateBranch ) 

	{

		state=StateBranchXLink;

		if (!readXLinkAttr (atts)) return false;

    } else if ( eName == "xlink" && state == StateMap) 

	{

		state=StateLink;

		if (!readLinkNewAttr (atts)) return false;

    } else if ( eName == "branch" && state == StateBranch ) 

	{

		lastBranch=model->createBranch(lastBranch);

		readBranchAttr (atts);

    } else if ( eName == "html" && state == StateHtmlNote ) 

	{

		state=StateHtml;

		htmldata="<"+eName;

		readHtmlAttr(atts);

		htmldata+=">";

    } else if ( state == StateHtml ) 

	{

		// accept all while in html mode,

		htmldata+="<"+eName;

		readHtmlAttr(atts);

		htmldata+=">";

    } else

        return false;   // Error

    return true;

}

bool parseVYMHandler::endElement  ( const QString&, const QString&, const QString &eName)

{

	/* Testing

	cout << "endElement </" <<qPrintable(eName)

		<<">  state=" <<state 

	//	<<"  laststate=" <<laststate

	//	<<"  stateStack="<<stateStack.last() 

	//	<<"  selString="<<model->getSelectString().toStdString()

		<<endl;

	*/

    switch ( state ) 

	{

		case StateMap:

			mainWindow->removeProgressCounter(); 

			break;

        case StateMapCenter: 

			model->emitDataHasChanged (lastBranch);

			lastBranch=(BranchItem*)(lastBranch->parent());

		//	lastBranch->setLastSelectedBranch (0);	// Reset last selected to first child branch

            break;

        case StateBranch: 

			// Empty branches may not be scrolled 

			// (happens if bookmarks are imported)

			if (lastBranch->isScrolled() && lastBranch->branchCount()==0) 

				lastBranch->unScroll();

			model->emitDataHasChanged (lastBranch);

			lastBranch=(BranchItem*)(lastBranch->parent());

			lastBranch->setLastSelectedBranch (0);	// Reset last selected to first child branch

            break;

        case StateHtml: 

			htmldata+="</"+eName+">";

			if (eName=="html")

			{

				state=StateHtmlNote;  

				htmldata.replace ("<br></br>","<br />");

				no.setNote (htmldata);

				lastBranch->setNoteObj (no);

			}	

			break;

		default: 

			break;

    }  

	state=stateStack.takeLast();	

	return true;

}

bool parseVYMHandler::characters   ( const QString& ch)

{

	//cout << "characters \""<<ch.toStdString()<<"\"  state="<<state <<"  laststate="<<laststate<<endl;

	QString ch_org=quotemeta (ch);

    QString ch_simplified=ch.simplifyWhiteSpace();

    if ( ch_simplified.isEmpty() ) return true;

    switch ( state ) 

    {

        case StateInit: break;

        case StateMap: break; 

		case StateMapSelect:

			model->select(ch_simplified);

			break;

		case StateMapSetting:break;

        case StateMapCenter: break;

        case StateNote:

			lastBranch->setNote(ch_simplified);

			break;

        case StateBranch: break;

        case StateStandardFlag: 

            lastBranch->activateStandardFlag(ch_simplified); 

            break;

        case StateImage: break;

        case StateHtmlNote: break;

        case StateHtml:

			htmldata+=ch_org;

			break;

        case StateHeading: 

            lastBranch->setHeading(ch_simplified);

            break;

        default: 

			return false;

    }

    return true;

}

QString parseVYMHandler::errorString() 

{

    return "the document is not in the VYM file format";

}

bool parseVYMHandler::readBranchAttr (const QXmlAttributes& a)	

{

	branchesCounter++;

	if (useProgress) 

		mainWindow->addProgressValue ((float)branchesCounter/branchesTotal);	

	lastMI=lastBranch;

	if (!readOOAttr(a)) return false;

	if (!a.value( "scrolled").isEmpty() )

		lastBranch->toggleScroll();	

		// (interesting for import of KDE bookmarks)

/*	if (!a.value( "frameType").isEmpty() )  FIXME-3

		lastOO->setFrameType (a.value("frameType")); //Compatibility 1.8.1

*/	

	if (!a.value( "incImgV").isEmpty() ) 

	{	

		if (a.value("incImgV")=="true")

			lastBranch->setIncludeImagesVer(true);

		else	

			lastBranch->setIncludeImagesVer(false);

	}	

	if (!a.value( "incImgH").isEmpty() ) 

	{	

		if (a.value("incImgH")=="true")

			lastBranch->setIncludeImagesHor(true);

		else	

			lastBranch->setIncludeImagesHor(false);

	}	

	return true;	

}

bool parseVYMHandler::readFrameAttr (const QXmlAttributes& a)	// FIXME-4 does not work if there is no lmo for treeitem

{

	if (lastMI)

	{

		OrnamentedObj* oo=(OrnamentedObj*)(lastMI->getLMO()); 

		if (oo)

		{

			bool ok;

			int x;

			{

				if (!a.value( "frameType").isEmpty() ) 

					oo->setFrameType (a.value("frameType"));

				if (!a.value( "penColor").isEmpty() ) 

					oo->setFramePenColor (a.value("penColor"));

				if (!a.value( "brushColor").isEmpty() ) 

					oo->setFrameBrushColor (a.value("brushColor"));

				if (!a.value( "padding").isEmpty() ) 

				{

					x=a.value("padding").toInt(&ok);

					if (ok) oo->setFramePadding(x);

				}	

				if (!a.value( "borderWidth").isEmpty() ) 

				{

					x=a.value("borderWidth").toInt(&ok);

					if (ok) oo->setFrameBorderWidth(x);

				}	

			}		

			return true;

		}

	}

	return false;

}

bool parseVYMHandler::readOOAttr (const QXmlAttributes& a)

{

	if (lastMI)

	{

		bool okx,oky;

		float x,y;

		if (!a.value( "relPosX").isEmpty() ) 

		{

			if (!a.value( "relPosY").isEmpty() ) 

			{

				x=a.value("relPosX").toFloat (&okx);

				y=a.value("relPosY").toFloat (&oky);

				if (okx && oky  )

					lastMI->setRelPos (QPointF(x,y));

				else

					return false;   // Couldn't read relPos

			}           

		}           

		if (!a.value( "absPosX").isEmpty() ) 

		{

			if (!a.value( "absPosY").isEmpty() ) 

			{

				x=a.value("absPosX").toFloat (&okx);

				y=a.value("absPosY").toFloat (&oky);

				if (okx && oky  )

					lastMI->setAbsPos (QPointF(x,y));

				else

					return false;   // Couldn't read absPos

			}           

		}           

		if (!a.value( "url").isEmpty() ) 

			lastMI->setURL (a.value ("url"));

		if (!a.value( "vymLink").isEmpty() ) 

			lastMI->setVymLink (a.value ("vymLink"));

		if (!a.value( "hideInExport").isEmpty() ) 

			if (a.value("hideInExport")=="true")

				lastMI->setHideInExport(true);

		if (!a.value( "hideLink").isEmpty()) 

		{

			if (a.value ("hideLink") =="true")

				lastMI->setHideLinkUnselected(true);

			else	

				lastMI->setHideLinkUnselected(false);

		}	

	}

	return true;	

}

bool parseVYMHandler::readNoteAttr (const QXmlAttributes& a)

{	// only for backward compatibility (<1.4.6). Use htmlnote now.

	no.clear();

	QString fn;

	if (!a.value( "href").isEmpty() ) 

	{

		// Load note

		fn=parseHREF(a.value ("href") );

		QFile file (fn);

		QString s;						// Reading a note

		if ( !file.open( QIODevice::ReadOnly) )

		{

			qWarning ("parseVYMHandler::readNoteAttr:  Couldn't load "+fn);

			return false;

		}	

		QTextStream stream( &file );

		QString lines;

		while ( !stream.atEnd() ) {

			lines += stream.readLine()+"\n"; 

		}

		file.close();

		lines ="<html><head><meta name=\"qrichtext\" content=\"1\" /></head><body>"+lines + "</p></body></html>";

		no.setNote (lines);

	}		

	if (!a.value( "fonthint").isEmpty() ) 

		no.setFontHint(a.value ("fonthint") );

	lastBranch->setNoteObj(no);

	return true;

}

bool parseVYMHandler::readImageAttr (const QXmlAttributes& a)

{

	lastMI=lastImage;

	if (!readOOAttr(a)) return false;  

	if (!a.value( "href").isEmpty() )

	{

		// Load Image

		if (!lastImage->load (parseHREF(a.value ("href") ) ))

		{

			QMessageBox::warning( 0, "Warning: " ,

				"Couldn't load image\n"+parseHREF(a.value ("href") ));

			lastImage=NULL;

			return true;

		}

	}	

	if (!a.value( "zPlane").isEmpty() ) 

		lastImage->setZValue (a.value("zPlane").toInt ());

    float x,y;

    bool okx,oky;

	if (!a.value( "relPosX").isEmpty() ) 

	{

		if (!a.value( "relPosY").isEmpty() ) 

		{

			// read relPos

			x=a.value("relPosX").toFloat (&okx);

			y=a.value("relPosY").toFloat (&oky);

			if (okx && oky) 

				lastImage->setRelPos (QPointF (x,y) );

			else

				// Couldn't read relPos

				return false;  

		}           

	}	

	//FIXME-3 if (!readOOAttr(a)) return false;

	if (!a.value ("originalName").isEmpty() )

	{

		lastImage->setOriginalFilename (a.value("originalName"));

	}

	return true;

}

bool parseVYMHandler::readXLinkAttr (const QXmlAttributes& a) 

{

	// Format of links was changed several times:

	//

	// object ID is used starting in version 1.8.76

	// (before there was beginBranch and endBranch)

	//

	// Starting in 1.13.2 xlinks are no longer subitems of branches,

	// but listed at the end of the data in a map. This make handling 

	// of links much safer and easier

	if (!a.value( "beginID").isEmpty() ) 

	{ 

		if (!a.value( "endID").isEmpty() ) 

		{

			TreeItem *beginBI=model->findBySelectString (a.value( "beginID"));

			TreeItem   *endBI=model->findBySelectString (a.value( "endID"));

			if (beginBI && endBI && beginBI->isBranchLikeType() && endBI->isBranchLikeType() )

			{

				Link *li=new Link (model);

				li->setBeginBranch ( (BranchItem*)beginBI );

				li->setEndBranch ( (BranchItem*)endBI);

				if (!a.value( "color").isEmpty() ) 

				{

					QColor col;

					col.setNamedColor(a.value("color"));

					li->setColor (col);

				}

				if (!a.value( "width").isEmpty() ) 

				{

					bool okx;

					li->setWidth(a.value ("width").toInt (&okx, 10));

				}

				model->createLink (li,true);	// create MO by default

			}

		}           

	}	

	return true;	

}

bool parseVYMHandler::readLinkNewAttr (const QXmlAttributes& a)	

{

	// object ID is used starting in version 1.8.76

	// (before there was beginBranch and endBranch)

	// Beginning in 1.13.2 xLinks are no longer parts of branches, but

	// a separate list after all the mapCenters within <vymmap> ... </vymmap>

	if (!a.value( "beginID").isEmpty() ) 

	{ 

		if (!a.value( "endID").isEmpty() ) 

		{

			TreeItem *beginBI=model->findBySelectString (a.value( "beginID"));

			TreeItem   *endBI=model->findBySelectString (a.value( "endID"));

			if (beginBI && endBI && beginBI->isBranchLikeType() && endBI->isBranchLikeType() )

			{

				Link *li=new Link (model);

				li->setBeginBranch ( (BranchItem*)beginBI );

				li->setEndBranch ( (BranchItem*)endBI);

				if (!a.value( "color").isEmpty() ) 

				{

					QColor col;

					col.setNamedColor(a.value("color"));

					li->setColor (col);

				}

				if (!a.value( "width").isEmpty() ) 

				{

					bool okx;

					li->setWidth(a.value ("width").toInt (&okx, 10));

				}

				model->createLink (li,true);	// create MO by default

			}

		}           

	}	

	return true;	

}

bool parseVYMHandler::readHtmlAttr (const QXmlAttributes& a)

{

	for (int i=1; i<=a.count(); i++)

		htmldata+=" "+a.localName(i-1)+"=\""+a.value(i-1)+"\"";

	return true;

}

bool parseVYMHandler::readSettingAttr (const QXmlAttributes& a)

{

	if (!a.value( "key").isEmpty() ) 

	{

		if (!a.value( "value").isEmpty() ) 

			settings.setLocalEntry (model->getDestPath(), a.value ("key"), a.value ("value"));

		else

			return false;

	} else

		return false;

	return true;

}