#ifndef GRAPH_H
#define GRAPH_H

/*
Represents a graph of rotor nodes and includes methods to manipulate nodes

TJR Jan 2014
*/

#include "rotor.h"
#include "factory.h"

#include "Poco/File.h"
#include "Poco/FileStream.h"
#include "Poco/CountingStream.h"
#include "Poco/StreamCopier.h"

namespace Rotor {
	class Graph{
		public:
			Graph(){init();};
			Graph(const std::string& _id){
				init(_id);
			};
			void init(const std::string& _id=""){
				id=_id;
				loaded=false;
				audio_loaded=false;
				cancelled=false;
				//audio_thumb=new Audio_thumbnailer();
				//Log_name="";
			};
			~Graph(){ 
				clear();
				//delete audio_thumb;
			};
			void clear(){
				for (auto n: nodes) {
					delete n.second;
				}
				nodes.clear();
				loaded=false;
			}
			//how to do output?
			//think video_render should be part of render context
			//graph should just encapsulate the manipulation of the graph
			//specific nodes can be created as output targets
			
			std::vector<Node*> find_nodes(const std::string &type);
			Node* find_node(const std::string &type);
			Node* get_node(const std::string &id);
			//--context// Json::Value signal_render(const std::string &node,const double framerate);
			//--context// bool video_render(const std::string &output_filename,const double framerate,int start, int end);
			bool load_file(std::string filename,std::string media_path);
			bool parse_json(std::string &data,std::string &media_path);
			//--context// Json::Value preview(std::string &node ,std::string &format,int frame,int w,int h);
			bool check_audio (std::string audio ,std::string path);
			//--context// Json::Value print_features (std::string &node);
			//bool load_audio(const std::string &filename, std::vector<Audio_processor*> processors);
			//bool load_video(const std::string &node_id,const std::string &filename);
			//load audio and video should be methods of the nodes themselves?
			bool loaded;
			bool audio_loaded;
			std::string audio_filename;
			bool cancelled;
			double progress;
			//void set_log_name (std::string _Log_name){
				//log name should be the same as the graph uid
				//Log_name=_Log_name;
			//}

			//Audio_thumbnailer *audio_thumb;
		private:
			std::string id;
			std::unordered_map<std::string,Node*> nodes;

	};
}

#endif //GRAPH_H