#ifndef CONF_H
#define CONF_H

struct listenerList;

typedef struct conf {
	int id;
	char title[30];
	char speaker[20];
	int day;
	int month;
	int year;
	struct listenerList* listeners;
	struct conf* next;
} tConf;

typedef struct confList {
	struct conf* conf;
	int grade;
	struct confList* next;
} tConfList;

typedef struct listener {
	int id;
	char name[20];
	int age;
	int level;
	struct confList* confs;
	struct listener* prev;
	struct listener* next;
} tListener;

typedef struct listenerList {
	struct listener* listener;
	int grade;
	struct listenerList* next;
} tListenerList;

typedef tConf* ptConf;
typedef tListener* ptListener;
typedef tConfList* ptConfList;
typedef tListenerList* ptListenerList;

int findConfId(ptConf confChain);
ptConf newConfChain();
void addConf(ptConf confChain, int id, char title[], char speaker[], int day, int month, int year);
void removeConf(ptConf confChain, int id);
int findListenerId(ptListener listenerChain);
ptListener newListenerChain();
int addListener(ptListener listenerChain, int id, char name[], int age, int level);
void removeListener(ptListener listenerChain, int id);
void addConfToConfList(ptConfList confList, ptConf conf, int grade);
void removeConfFromConfList(ptConfList confList, ptConf conf);
void printConfList(ptConfList confList);
void addListenerToListenerList(ptListenerList listenerList, ptListener listener, int grade);
void removeListenerFromListenerList(ptListenerList listenerList, ptListener listener);
void printListenerList(ptListenerList listenerList);
int participateToConf(ptConf confChain, ptListener listenerChain, int confId, int listenerId, int grade);
int confGradeAvg(ptConf conf);
int confParticipations(ptConf conf);

#endif // CONF_H