#ifndef HELPERS_H_
#define HELPERS_H_

#define _GNU_SOURCE

#include <stdint.h>

#include "types.h"
#include "node.h"
#include "message.h"
#include "circ_buff.h"

// Macros to turn a numeric macro into a string literal
#define xstr(s) str(s)
#define str(s) #s

// AEMs file related definitions
#define AEM_ID_LEN 4
#define AEM_BUFFER_LEN 5
// Format for fscanf() to read the AEM numbers
#define AEM_LINE_FORMAT "%" xstr(AEM_ID_LEN) "s\n"

node_id_t extract_id_from_ip(const ipv4_t ip);

void set_timer_and_handler(void (*handler)(int), long int timer_interval);

uint16_t create_message(char *new_message, uint16_t max_message_length,
	node_handle_t *neighbors, uint8_t num_neighbors, node_id_t own_id);

int create_socket_and_listen(port_t port, uint8_t backlog_size);

void send_message(node_handle_t peer, message_handle_t message);

node_id_t accept_connection(int sock, address_t *client_name,
	fd_set *active_fd_set, int *listens_on);

uint16_t checkAddNode(node_handle_t **neighbors, uint16_t num_neighbors ,
	address_t peer_name, node_id_t node_id);

void write_to_peer(int filedes, const char *message);

int read_from_peer(int file_des, uint16_t max_line,
	cbuf_handle_t *message_buffer, node_handle_t **neighbors,
	uint16_t num_neighbors);

uint16_t fread_neighbors(char *AEM_file, node_handle_t **neighbors,
	port_t port);

void init_sockaddr(address_t *peer_name, const ipv4_t hostname, port_t port);

#endif //HELPERS_H_