#include "Textbox.h"
#include "olcUTIL_Geometry2D.h"

Textbox::Textbox(){};

void Textbox::Initialize(std::string text,vf2d pos,std::string headerText,vf2d maxSize,std::vector<Memory>resourceCost,float letterDisplayDelay)
{
	if(GetCurrentString()!=text){ //Make sure this is actually a new textbox
		SetDefaults();
		this->text=text;
		this->headerText=headerText;
		this->maxSize=maxSize;
		this->resourceCost=resourceCost;
		this->letterDisplayDelay=letterDisplayDelay;
		visible=true;
	}
}

void Textbox::SetDefaults(){
	lastLetterTime=0;
	textboxMarker=-1;
	lastWordMarker=-1;
	lastWord="";
	lastHeaderWordMarker=-1;
	lastHeaderWord="";
	displayText="";
	displayHeaderText="";
	text="";
	headerText="";
}

void Textbox::Update(PixelGameEngine*pge){
	lastLetterTime-=pge->GetElapsedTime();
	if(lastLetterTime<=0){
		if(textboxMarker<int(text.length()-1)){
			std::string tempText=displayText;
			tempText+=text[textboxMarker+1];

			auto WrapText=[&](std::string&tempText,std::string&text,std::string&displayText,int&lastWordMarker,std::string&lastWord){
				if(pge->GetTextSizeProp(tempText).x>=maxSize.x){
					displayText=displayText.substr(0,lastWordMarker);
					displayText+='\n';
					displayText+=lastWord;
				}
				if(text[textboxMarker+1]==' '||text[textboxMarker+1]=='\n'){
					lastWord="";
					lastWordMarker=textboxMarker+2;
				} else {
					lastWord+=text[textboxMarker+1];
				}
				displayText+=text[textboxMarker+1];
			};

			WrapText(tempText,text,displayText,lastWordMarker,lastWord);

			if(textboxMarker<int(headerText.length()-1)){
				std::string tempHeaderText=displayHeaderText;
				tempHeaderText+=headerText[textboxMarker+1];
				WrapText(tempHeaderText,headerText,displayHeaderText,lastHeaderWordMarker,lastHeaderWord);
			}
			textboxMarker++;
		}
		maxSize.y=std::max(maxSize.y,float(pge->GetTextSizeProp(displayHeaderText).y+pge->GetTextSizeProp(displayText).y));
		lastLetterTime=letterDisplayDelay;
	}
}


void Textbox::Draw(PixelGameEngine*pge,Resources&resources){
	if(visible){
		geom2d::rect<float>boxRect={pos-vf2d{3,3},maxSize+vf2d{6,6}};
		if(boxRect.bottom().start.y>=pge->ScreenHeight()){
			boxRect.pos-={0,boxRect.bottom().start.y-pge->ScreenHeight()};
		}
		if(boxRect.right().start.x>=pge->ScreenWidth()){
			boxRect.pos-={boxRect.right().start.x-pge->ScreenWidth(),0};
		}
		if(boxRect.top().start.y<0){
			boxRect.pos+={0,-boxRect.top().start.y};
		}
		if(boxRect.left().start.x<0){
			boxRect.pos+={-boxRect.left().start.x,0};
		}
		pge->FillRectDecal(boxRect.pos,maxSize+vf2d{6,6},VERY_DARK_GREEN);
		pge->DrawRectDecal(boxRect.pos+vf2d{1,1},maxSize+vf2d{4,4},WHITE);
		pge->DrawShadowStringPropDecal(boxRect.pos+vf2d{3,3},displayHeaderText,{245, 218, 66});
		pge->DrawShadowStringPropDecal(boxRect.pos+vf2d{3.f,float(3+pge->GetTextSizeProp(displayHeaderText).y)},displayText,{220,220,220});
	}
}

void Textbox::UpdatePosition(vf2d newPos){
	pos=newPos;
}

std::string&Textbox::GetCurrentString(){
	return text;
}

void Textbox::SetVisible(bool visible){
	this->visible=visible;
	if(!visible){
		SetDefaults();
	}
}

void Textbox::UpdateAndDraw(vf2d pos,PixelGameEngine*pge,Resources&resources){
	UpdatePosition(pos);
	Update(pge);
	Draw(pge,resources);
}

vf2d Textbox::GetSize(){
	return maxSize;
}