#include "ofMain.h"
#include "ofxCsv.h"
#include "vectortext.h"

class ScriptLine{
public:
	ScriptLine(SVGFont &font,string audiofile,string cols,string message){

		vector<string> colours=ofSplitString(cols,",");
		for (auto c: colours){
			palette.push_back(ofColor::fromHex(ofHexToInt(c)));
		}

		clear();
		vector<string> m=ofSplitString(message," ");
		width=0;
		for (auto& word: m){
			glyphWord w;
			int pos=0;
			for (auto& c: word){
				string uniglyph = ofUTF8Substring(word, pos, 1);
				if (c<0){
					//ofLog()<<"got unicode glyph, "<<uniglyph;
				}
				w.glyphs.push_back(font.getGlyph(uniglyph,
					palette.size()?
					palette[ofRandom(palette.size())]:
					//112->231 hue sat 0->255 brightness 255
					ofColor::fromHsb(ofRandom(119)+112,ofRandom(255),255)
				));
				pos++;
				w.width+=w.glyphs[w.glyphs.size()-1].width;
			}
			words.push_back(w);
			width+=(w.width+enspace);
		}

		if (audio.load(audiofile)){
			//requires https://github.com/arturoc/openFrameworks/tree/feature-soundPlayerDuration
        	duration = ((float)audio.getDurationMS())/1000.0f;
        	
        	avgWordDuration = duration / words.size();

        	ofLog()<<"Line "<<audiofile<<", duration "<<duration<<"s, "<<words.size()<<" words avg "<<avgWordDuration<<"s";
		}
		else duration=0.0f;

		enspace=font.enspace;

	}
	void clear(){
		words.clear();
	}
	vector<colourPolyline>& getOutlines(float time){
		float wordphase=time/duration;
		float phase=time/avgWordDuration;
		float phaseseg=fmod(phase,1.0f);

		//ofLog()<<"phase "<<phase<<" phaseseg "<<phaseseg;

		/*
		int word1=(int)(phase+0.5f); 
			//segment 1 plays word 0 out for the first half 
			//then word 1 solid
		int word2=(int)(phase+1.5f); 
			//segment 2 plays word 1 solid for the first half
			//then word 2 in

			//deal with the ends?
			//extra padding words, 2 per end

		float word1amt=0.5-phaseseg;

		if (word1amt<0.0f) word1amt=1.0f;

		float word2mat=phaseseg-0.5f;

		if (word2amt<0.0f) word2amt=1.0f;
		*/

		//segment 1 plays word 0 solid for the first half
		//then word 0 out
		//at the very beginning, there's a buffer

		int word1=(int)(phase)-1; 

		//segment 2 plays word 1 in for the first half 
		//then word 1 solid

		int word2=word1+1;

	    float word1amt=2.0-(phaseseg*2.0);
	    if (word1amt>1.0f) word1amt=1.0f;

	    float word2amt=phaseseg*2.0;
	    if (word2amt>1.0f) word2amt=1.0f;

	    outlines.clear();

		float s=0.05f;

		float p=(-ofGetWidth()/3*s)-(width*wordphase);

		if (word1>-1&&word1<words.size()){
			for (int i=0;i<word1;i++){
				p+=words[i].width;
				p+=enspace;
			}
			for (auto& g:words[word1].glyphs){
				for (auto& o:g.outline){
					auto q=o;
					q.scale(s,-s);
					q.translate(glm::vec3(p*s,0,0));
					outlines.push_back(colourPolyline(q,g.colour*word1amt));
				}
				p+=g.width;
			}
			p+=enspace;
		}

		if (word2<words.size()){
			for (auto& g:words[word2].glyphs){
				for (auto& o:g.outline){
					auto q=o;
					q.scale(s,-s);
					q.translate(glm::vec3(p*s,0,0));
					outlines.push_back(colourPolyline(q,g.colour*word2amt));
				}
				p+=g.width;
			}
		}
	
		return outlines;

	}

	vector<ofColor> palette;
	vector<glyphWord> words;
	ofSoundPlayer audio;
	float duration;
	float avgWordDuration;
	vector<colourPolyline> outlines;
	float enspace;
	float width;
	
};


class Show{
public:
	bool loadFont(filesystem::path fontpath){
		return font.load(fontpath);
	}
	Show(){
		bisPlaying=false;
	}
	Show(filesystem::path fontpath){
		font.load(fontpath);
		Show();
	}
	bool load(string file){

		if (!font.isLoaded()){
			ofLogError()<<"cannot load show without a font";
			return false;
		}

		// Load a CSV File.
		if(csv.load(file,"|")) {
			
			for (auto row:csv){
				if (row.size()<2){
					ofLog()<<"Error, found row with "<<row.size()<<" elements";
				}
				else script.push_back(ScriptLine(font,row[0],row[1],row[2]));
			}

			ofLog()<<"Loaded show, "<<csv.getNumRows()<<" lines";

			playline=script.begin();

			return true;
		}

		playline=script.end();

		return false;
	}

	void play(){
		if (playline==script.end()){
			if (script.size()){
				playline=script.begin();
				ofLog()<<"Restarted!";
			}
			else return;
		}

		if (playline->audio.isLoaded()){
			playline->audio.play();
			startTime=ofGetElapsedTimef();
			bisPlaying=true;
			ofLog()<<"Line playing "<<playline->duration;
		}
	}

	void stop(){
		if (isPlaying()){
			playline->audio.stop();
			bisPlaying=false;
			ofLog()<<"Line stopped";
		}
	}

	void update(){
		if (isPlaying()){
			if (ofGetElapsedTimef()-startTime>
					(playline->avgWordDuration*
						playline->words.size()+2)){
				playline->audio.stop();
				bisPlaying=false;
				ofLog()<<"Line ended, "<<playline->duration;;
				playline++;
				if (playline==script.end()){
					ofLog()<<"Show finished!";
				}
			}
		}
	}

	vector<colourPolyline>& getOutlines(){

		return playline->getOutlines(ofGetElapsedTimef()-startTime);
	}

	ofxCsv csv;

	vector<ScriptLine> script;

	vector<ScriptLine>::iterator playline;

	float startTime;
	bool bisPlaying;
	bool isPlaying() {
		return bisPlaying;
	}

	SVGFont font;
};