#ifndef ENCHUFE_H_
#define ENCHUFE_H_
#include <errno.h>
#include <netinet/in.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>

#define try(a) do { \
		if ((a) < 0) { \
			fprintf(stderr, "[ERROR]: %s:%d In function %s: %s\n", __FILE__, __LINE__, __FUNCTION__, strerror(errno)); \
			exit (EXIT_FAILURE); \
		} \
	} while(0)

typedef int FD; // short for FileDescriptor
typedef uint16_t Port;
typedef uint8_t Byte;

typedef struct {
	Byte* buf;
	size_t len;
} Buffer;

Buffer atob(const char* str);

typedef union {
	Byte bytes[4];
	uint32_t ip;
} IPv4;

typedef struct {
	FD fd;
	struct sockaddr_in addr;
	socklen_t addrlen;
} Enchufe;

typedef struct {
	struct sockaddr_in addr;
	socklen_t addrlen;
} Receptaculo;

inline FD nuevo() {
	FD fd = socket(PF_INET, SOCK_STREAM, 0);
	try (fd);
	return fd;
}

inline Receptaculo receptaculo(IPv4 ip, Port port) {
	struct sockaddr_in name = {
		.sin_family = AF_INET,
		.sin_port = port,
		.sin_addr = {
			.s_addr = ip.ip,
		},
	};
	return (Receptaculo){
		.addr = name,
		.addrlen = sizeof(name),
	};
}

inline Enchufe aplasta(FD fd, Receptaculo rec) {
	return (Enchufe){
		.fd = fd,
		.addr = rec.addr,
		.addrlen = rec.addrlen,
	};
}

Enchufe enchufa(IPv4 ip, Port port);
void conecta(Enchufe enchufe);
void amarra(Enchufe enchufe);
void escucha(Enchufe enchufe, size_t len);
Enchufe acepta(Enchufe enchufe);
void zumba(Enchufe enchufe, Buffer in_buf);
size_t recibe(Enchufe enchufe, Buffer out_buf);
void desenchufa(Enchufe enchufe);

#endif // ENCHUFE_H_ header