#ifndef _CTAPHID_H_H
#define _CTAPHID_H_H

#include "usbhid.h"

#define TYPE_INIT               0x80
#define TYPE_CONT               0x00

#define CTAPHID_PING         (TYPE_INIT | 0x01)
#define CTAPHID_MSG          (TYPE_INIT | 0x03)
#define CTAPHID_LOCK         (TYPE_INIT | 0x04)
#define CTAPHID_INIT         (TYPE_INIT | 0x06)
#define CTAPHID_WINK         (TYPE_INIT | 0x08)
#define CTAPHID_CBOR         (TYPE_INIT | 0x10)
#define CTAPHID_CANCEL       (TYPE_INIT | 0x11)
#define CTAPHID_ERROR        (TYPE_INIT | 0x3f)

    #define ERR_INVALID_CMD         0x01
    #define ERR_INVALID_PAR         0x02
    #define ERR_INVALID_LEN         0x03
    #define ERR_INVALID_SEQ         0x04
    #define ERR_MSG_TIMEOUT         0x05
    #define ERR_CHANNEL_BUSY        0x06


#define CTAPHID_INIT_PAYLOAD_SIZE  (HID_MESSAGE_SIZE-7)
#define CTAPHID_CONT_PAYLOAD_SIZE  (HID_MESSAGE_SIZE-5)

#define CTAPHID_BROADCAST_CID       0xffffffff

#define CTAPHID_BUFFER_SIZE         4096

#define CAPABILITY_WINK             0x01
#define CAPABILITY_LOCK             0x02
#define CAPABILITY_CBOR             0x04
#define CAPABILITY_NMSG             0x08

typedef struct
{
    uint32_t cid;
    union{
        struct{
            uint8_t cmd;
            uint8_t bcnth;
            uint8_t bcntl;
            uint8_t payload[CTAPHID_INIT_PAYLOAD_SIZE];
        } init;
        struct{
            uint8_t seq;
            uint8_t payload[CTAPHID_CONT_PAYLOAD_SIZE];
        } cont;
    } pkt;
} CTAPHID_PACKET;


typedef struct
{
    uint8_t nonce[8];
    uint32_t cid;
    uint8_t protocol_version;
    uint8_t version_major;
    uint8_t version_minor;
    uint8_t build_version;
    uint8_t capabilities;
} __attribute__((packed)) CTAPHID_INIT_RESPONSE;



void ctaphid_init();

void ctaphid_handle_packet(uint8_t * pkt_raw);



#define ctaphid_packet_len(pkt)     ((uint16_t)((pkt)->pkt.init.bcnth << 8) | ((pkt)->pkt.init.bcntl))

#endif