#ifndef CGE_NET_H
#define CGE_NET_H

#include <stdint.h>
#include <stddef.h>

enum CgeNetCode {
    CGE_NET_EOK,
    CGE_NET_EUNKNOWN,
    CGE_NET_EINVAL,
    CGE_NET_ENOMEM,
    CGE_NET_EADDRINUSE,
    CGE_NET_EADDRNOTAVAIL,
    CGE_NET_ECONNREFUSED,
    CGE_NET_ECONNRESET,
    CGE_NET_ECONNABORTED,
    CGE_NET_ENETUNREACH,
    CGE_NET_EHOSTUNREACH,
    CGE_NET_ETIMEDOUT,
    CGE_NET_EWOULDBLOCK,
    CGE_NET_EDISCONNECT,
};

enum CgeNetDomain {
    CGE_NET_IPV4,
    CGE_NET_IPV6
};

enum CgeNetType {
    CGE_NET_TCP,
    CGE_NET_UDP,
};

enum CgeNetEvent {
    CGE_NET_READABLE    = (1 << 0),
    CGE_NET_WRITABLE    = (1 << 1),
};

struct CgeNetIPv4 {
    int type;
    uint8_t addr[4];
    uint16_t port;
};

struct CgeNetIPv6 {
    int type;
    uint8_t addr[16];
    uint16_t port;
};

typedef union CgeNetAddr {
    int type;
    struct CgeNetIPv4 ipv4;
    struct CgeNetIPv6 ipv6;
} CgeNetAddr;

typedef struct CgeNetSocket CgeNetSocket;
typedef struct CgeNetPoll CgeNetPoll;
typedef void (*CgeNetCallback)(CgeNetSocket *, int event);


int CgeNetAddrFromStr(const char *str, uint16_t port, CgeNetAddr *addr);

int CgeNetInit(void);
void CgeNetCleanup(void);

CgeNetSocket *CgeNetOpen(int domain, int type, int *result);
void CgeNetClose(CgeNetSocket *socket);
int CgeNetErrorCode(CgeNetSocket *socket);
int CgeNetFetchError(CgeNetSocket *socket);

int CgeNetSetBlocking(CgeNetSocket *socket, int value);
int CgeNetBind(CgeNetSocket *socket, const CgeNetAddr *addr);
int CgeNetListen(CgeNetSocket *socket, unsigned int backlog);

CgeNetSocket *CgeNetAccept(CgeNetSocket *socket, CgeNetAddr *addr);
int CgeNetConnect(CgeNetSocket *socket, const CgeNetAddr *addr);

int CgeNetWrite(CgeNetSocket *socket, const void *buffer, size_t size,
               size_t *actual);
int CgeNetRead(CgeNetSocket *socket, void *buffer, size_t size,
               size_t *actual);
int CgeNetPeek(CgeNetSocket *socket, void *buffer, size_t size, size_t *actual);

int CgeNetWriteTo(CgeNetSocket *socket, const CgeNetAddr *addr,
                  const void *buffer, size_t size, size_t *actual);
int CgeNetReadFrom(CgeNetSocket *socket, CgeNetAddr* addr, void *buffer,
                   size_t size, size_t *actual);
void *CgeNetContext(CgeNetSocket *socket);
void CgeNetSetContext(CgeNetSocket *socket, void *data);


CgeNetPoll *CgeNetPollCreate(int *result);
int CgeNetPollErrorCode(CgeNetPoll *poll);
void CgeNetPollFree(CgeNetPoll* poll);

int CgeNetPollAdd(CgeNetPoll *poll, CgeNetSocket *socket,
                  CgeNetCallback callback, int events);
int CgeNetPollRemove(CgeNetPoll *poll, CgeNetSocket *socket);
int CgeNetPollWait(CgeNetPoll *poll, int timeout);

#endif /* CGE_NET_H */