// can run this using rigctl/rigctld and socat pty devices
// gcc -o simft990 simft990.c
// emulates 1.2 ROM FT990 which can only read 1492 bytes
#define _XOPEN_SOURCE 700
// since we are POSIX here we need this
#if 0
struct ip_mreq
{
    int dummy;
};
#endif

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include "../include/hamlib/rig.h"

#define BUFSIZE 256

float freqA = 14074000;
float freqB = 14074500;
char tx_vfo = '0';
char rx_vfo = '0';
char modeA = '1';
char modeB = '1';
int width_main = 500;
int width_sub = 700;


// ID 0310 == 310, Must drop leading zero
typedef enum nc_rigid_e
{
    NC_RIGID_NONE            = 0,
    NC_RIGID_FT450           = 241,
    NC_RIGID_FT450D          = 244,
    NC_RIGID_FT950           = 310,
    NC_RIGID_FT891           = 135,
    NC_RIGID_FT991           = 135,
    NC_RIGID_FT2000          = 251,
    NC_RIGID_FT2000D         = 252,
    NC_RIGID_FTDX1200        = 583,
    NC_RIGID_FTDX9000D       = 101,
    NC_RIGID_FTDX9000Contest = 102,
    NC_RIGID_FTDX9000MP      = 103,
    NC_RIGID_FTDX5000        = 362,
    NC_RIGID_FTDX3000        = 460,
    NC_RIGID_FTDX101D        = 681,
    NC_RIGID_FTDX101MP       = 682
} nc_rigid_t;

void load_dat(const char *filename, unsigned char buf[1492])
{
    FILE *fp = fopen(filename, "r");
    char line[4096];
    int n = 0;

    while (fgets(line, sizeof(line), fp))
    {
        char *s = strdup(line);
        unsigned int val;
        char *p = strtok(line, " \r\n");

        do
        {
            sscanf(p, "%x", &val);
            buf[n++] = val;
        }
        while (p = strtok(NULL, " \r\n"));

        strtok(s, "\r\n");
        //printf("n=%d, %s\n",n,s);
        free(s);
    }

    fclose(fp);
    printf("%d bytes read\n", n);
}

static unsigned char alldata[1492];

int
getmyline(int fd, char *buf)
{
    unsigned char c;
    int i = 0;
    int n = 0;
    memset(buf, 0, BUFSIZE);

#if 1

    while (i < 5 && read(fd, &c, 1) > 0)
    {
        buf[i++] = c;
        n++;
    }

#else
    n = read(fd, buf, 5);
#endif
    printf("n=%d %02x %02x %02x %02x %02x\n", n, buf[0], buf[1], buf[2], buf[3],
           buf[4]);
    return n;
}

#if defined(WIN32) || defined(_WIN32)
int openPort(char *comport) // doesn't matter for using pts devices
{
    int fd;
    fd = open(comport, O_RDWR);

    if (fd < 0)
    {
        perror(comport);
    }

    return fd;
}

#else
int openPort(char *comport) // doesn't matter for using pts devices
{
    int fd = posix_openpt(O_RDWR);
    char *name = ptsname(fd);

    if (name == NULL)
    {
        perror("pstname");
        return -1;
    }

    printf("name=%s\n", name);

    if (fd == -1 || grantpt(fd) == -1 || unlockpt(fd) == -1)
    {
        perror("posix_openpt");
        return -1;
    }

    return fd;
}
#endif



int main(int argc, char *argv[])
{
    char buf[256];
    int fd = openPort(argv[1]);

    load_dat("simft990.dat", alldata);

    while (1)
    {
        int bytes = getmyline(fd, buf);

        if (bytes == 0) { continue; }

        if (bytes != 5)
        {
            printf("Not 5 bytes?  bytes=%d\n", bytes);
        }

        if (buf[4] == 0x10)
        {
            write(fd, alldata, 1492);
        }
    }

    return 0;
}