#ifndef GRAPH_H
#define GRAPH_H

#include "Poco/StringTokenizer.h"

#include "rotor.h"
#include "nodes_audio_analysis.h"


/*------------------------

Graph is an instance of a rotor renderer

-------------------------*/

namespace Rotor {
	class Graph{
		public:
			Graph(){duration=20.0f;loaded = false;outW=640;outH=360;audio_thumb=new Audio_thumbnailer();};
			Graph(const string& _uid,const string& _desc){
				init(_uid,_desc);
				audio_loaded=false;
				bitRate=1000000;
			};
			void init(const string& _uid,const string& _desc){
				uid=_uid;
				description=_desc;
				duration=20.0f;
				framerate=25.0f;
				cancelled=false;
			};
			~Graph(){ clear(); delete audio_thumb;};
			void clear(){
				for (auto n: nodes) {
					delete n.second;
				}
				nodes.clear();
				loaded=false;
			}
			string uid;								//every version of a graph has a UUID, no particular need to actually read its data(?)
													//?? is it faster than using strings??
			string description;
			std::unordered_map<string,Node*> nodes;
			vector<Node*> find_nodes(const string &type); //could be a way of finding a set based on capabilities?
			Node* find_node(const string &type);
			bool signal_render(string &signal_xml,const float framerate);
			bool video_render(const string &output_filename,const float framerate);
			bool load(string data,string media_path);
			bool loadFile(string &filename,string media_path);
			bool parseXml(string media_path);
			bool parseJson(string &data,string &media_path);
			bool set_resolution(int w,int h);
			bool preview(xmlIO &XML,string &node,string &format,int frame,int w,int h);
			bool check_audio(string audio,string path);
			bool print_features(xmlIO &XML,string &node);
			bool load_audio(const string &filename,vector<Audio_processor*> processors);
			bool load_video(const string &nodeID,const string &filename);//can be performance or clip
			bool set_bitrate(int b){
				if (b>64000){
					bitRate=b;
					return true;
				}
				else return false;
			}
			bool loaded;
			float duration;
			float framerate;
			const string graphToString();
			xmlIO xml;
			bool audio_loaded;
			string audio_filename;
			bool cancelled;
			float progress;
			int bitRate;

			Audio_thumbnailer *audio_thumb;
		private:
			int outW,outH;

	};
	class Thumbnailer{
		public:
			bool make(const string &inputfilename,int w,int h,const string &outputfilename) {
				if (player.open(inputfilename)){
					if (player.fetch_frame(w,h,player.get_number_frames()/4)) {
						Image i;
						i.setup_fromRGB(w,h,player.frame->Data[0],player.frame->Linesize[0]-(w*3));
						cv::Mat cp;
						cvtColor(i.rgb,cp,CV_RGB2BGR);
						cv::imwrite(outputfilename.c_str(),cp);
						return true;

					}
				}
				return false;
			}
		private:
			libav::video_decoder player;
	};
}
#endif