#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <gmodule.h>
#include "algo_skel.h"
#include "donar_client.h"
#include "donar_server.h"

int main(int argc, char** argv) {
    setvbuf(stdout, NULL, _IONBF, 0);
    printf("~ Donar ~\n");

    struct donar_params dp;
    donar_init_params (&dp);

    while ((dp.opt = getopt(argc, argv, "csh:e:r:o:a:b:h:")) != -1) {
      switch(dp.opt) {
      case 's':
        dp.is_server = 1;
        break;
      case 'e':
        dp.port = strdup(optarg);
        if (dp.port == NULL) goto terminate;
        g_ptr_array_add (dp.exposed_ports, dp.port);
        break;
      case 'r':
        dp.port = strdup(optarg);
        if (dp.port == NULL) goto terminate;
        g_ptr_array_add (dp.remote_ports, dp.port);
        break;
      case 'o':
        dp.onion_file = strdup(optarg);
        break;
      case 'c':
        dp.is_client = 1;
        break;
      case 'a':
        dp.algo = strdup(optarg);
        break;
      case 'h':
        dp.is_healing = 1;
        break;
      case 'b':
        dp.is_waiting_bootstrap = 1;
        break;
      default:
        goto in_error;
      }
    }

    if (!(dp.is_server ^ dp.is_client)) goto in_error;
    if (dp.algo == NULL) goto in_error;

    if (dp.is_server) {
      struct donar_server_ctx ctx;
      if (dp.exposed_ports->len < 1 && dp.remote_ports->len < 1) goto in_error;
      donar_server(&ctx, &dp);
    } else if (dp.is_client) {
      struct donar_client_ctx ctx;
      if ((dp.exposed_ports->len < 1 && dp.remote_ports->len < 1) || dp.onion_file == NULL) goto in_error;
      donar_client(&ctx, &dp);
    }
    goto terminate;

in_error:
    dp.errored = 1;
    fprintf(stderr, "Usage as client : %s -c -a <algo> [-h] [-b] -o <onion service file> -e <exposed udp port> [-e ...]* -r <remote udp port> [-r ...]*\n", argv[0]);
    fprintf(stderr, "Usage as server : %s -s -a <algo> [-h] [-b] -e <exposed udp port> [-e ...]* -r <remote udp port> [-r ...]*\n\n", argv[0]);
    fprintf(stderr, "Passed parameters: client=%d, server=%d, algo=%s, exposed_ports=%d, remote_ports=%d, onion_file=%s\n",
            dp.is_client, dp.is_server, dp.algo, dp.exposed_ports->len, dp.remote_ports->len, dp.onion_file);

terminate:
    if (dp.onion_file != NULL) free(dp.onion_file);
    if (dp.algo != NULL) free(dp.algo);
    g_ptr_array_free(dp.exposed_ports, TRUE);
    g_ptr_array_free(dp.remote_ports, TRUE);

    return dp.errored;
}