#ifndef ETHERLIB_TEST_DHCP_H
#define ETHERLIB_TEST_DHCP_H

#include <stdint.h>
#include "../../eth_interface.h"

typedef struct {
    uint8_t op; ///< Operations
    uint8_t htype; ///< Hardware type
    uint8_t hlen; ///< Hardware address length
    uint8_t hops; ///< Number of network hops
    uint32_t xid; ///< Transaction ID
    uint16_t secs; ///< Seconds elapsed since client started trying to boot
    uint16_t flags; ///< Flags
    uint32_t ciaddr; ///< Client IP address (filled in DHCPREQUEST)
    uint32_t yiaddr; ///< 'Your' client IP address
    uint32_t siaddr; ///< ...
    uint32_t giaddr; ///< ...
    uint8_t chaddr[16]; ///< Client hardware address
    char * sname; ///< Optional server host name
    char * file; ///< Boot file name
} DhcpOps;

/**
 * DHCP state.
 */
typedef enum {
    DHCP_INIT_REBOOT,
    DHCP_REBOOTING,
    DHCP_INIT,
    DHCP_REQUESTING,
    DHCP_SELECTING,
    DHCP_REBINDING,
    DHCP_BOUND,
    DHCP_RENEWING
} DhcpState;

/**
 * DHCP op codes.
 */
typedef enum {
    DHCP_BOOTREQUEST = 1,
    DHCP_BOOTREPLY = 0
} DhcpOpCode;

#define DHCP_MIN_PACKET_SIZE (312)
#define DHCP_CLIENT_PORT (68)
#define DHCP_SERVER_PORT (67)

/**
 * Initiate DHCP on interface
 * @param intf interface
 */
void dhcp_initiate(EthInterface * intf);

#endif //ETHERLIB_TEST_DHCP_H