/*
 * mpl.c
 *
 * by Alexander Zhirov (alexander@zhirov.kz)
 * Telegram @alexanderzhirov
 */

#include "mpl.h"
#include <getopt.h>

static MPL *mpl;

const char *const short_options = "hcv";

const struct option long_options[] = {
    {"help", 0, NULL, 'h'},
    {"check-devices", 0, NULL, 'c'},
    {"version", 0, NULL, 'v'},
    {NULL, 0, NULL, 0}};

[[noreturn]] void static print_usage_and_exit(int code)
{
    printf("Usage: %s [OPTION]...\n\n", MPL_NAME);
    puts("  -c,  --check-devices  checking connected devices at startup");
    puts("  -h,  --help           display this help text and exit");
    puts("  -v,  --version        display version information and exit\n");
    exit(code);
}

[[noreturn]] void static print_version_and_exit()
{
    printf("%s version %s\n", MPL_NAME, VERSION);
    exit(0);
}

static void signals_handler(int signum)
{
    MPLOG(LOG_WARNING, "cancelling the mportlink loop (%d)", signum);
    mpl->cancellable.signal = signum;
    mpl->cancellable.exit = 1;
}

int main(int argc, char *argv[])
{
    int c;

    MPL_PARAMETERS parameters =
    {
        .check_device = 0
    };

    while ((c = getopt_long(argc, argv, short_options, long_options, NULL)) != -1)
        switch (c)
        {
        case 'c':
            parameters.check_device = 1;
            break;
        case 'v':
            print_version_and_exit();
        case 'h':
            print_usage_and_exit(0);
        case '?':
            print_usage_and_exit(1);
        }

    mpl = mpl_init(&parameters);

    signal(SIGHUP, signals_handler);
    signal(SIGINT, signals_handler);
    signal(SIGTERM, signals_handler);

    mpl_loop(mpl);

    mpl_stop(mpl);

    return 0;
}