#include "../../core/communication.h"
#include "../../core/process.h"
#include "../../core/error.h"
#include "../lib/remoted.h"
#include <stdlib.h>

#include "../../core/logger.h"

#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <signal.h>

#include <stdio.h>

// to quit them properly if a signal occurs
struct ipc_service srv;

void handle_signal (int signalnumber)
{
    // the application will shut down, and remove the service unix socket
    if (server_close (&srv) < 0) {
        handle_error("server_close < 0");
    }

    log_info ("remoted received a signal %d\n", signalnumber);
    exit (EXIT_SUCCESS);
}

void usage ()
{
    fprintf (stderr, "remoted [-d <unix-socket-dir>] [-h]\n");
}

/* TODO: handle command line arguments */

// cmdline: remoted -d <unix-socket-dir>
void remoted_cmd_args (int argc, char **argv, char **env
        , struct remoted_ctx *ctx)
{
    (void) env;
    (void) ctx;

    int c;
    while ( (c = getopt(argc, argv, "hd:")) != -1) {
        switch (c) {
            case 'd':
                ctx->unix_socket_dir = malloc (strlen (optarg) +1);
                strncpy (ctx->unix_socket_dir, optarg, strlen (optarg));
                log_debug ("remoted unix socket dir: %s", ctx->unix_socket_dir);
                break;
            case '?':
            case 'h':
                usage ();
                exit (EXIT_FAILURE);
            default:
                log_debug ("remoted getopt returned character code 0%o ??\n", c);
        }
    }

    if (optind < argc) {
        log_debug ("remoted non-option ARGV-elements:");
        while (optind < argc)
            log_debug ("\t%s", argv[optind++]);
    }
}

/* TODO: handle authorizations */
int remoted_auth_conf (struct remoted_ctx *ctx)
{
    (void) ctx;
    return 0;
}

int main(int argc, char **argv, char **env)
{
    struct remoted_ctx ctx;
    memset (&ctx, 0, sizeof (struct remoted_ctx));

    memset (&srv, 0, sizeof (struct ipc_service));
    srv.index = 0;
    srv.version = 0;

    signal(SIGHUP, handle_signal);
    signal(SIGINT, handle_signal);
    signal(SIGQUIT, handle_signal);

    remoted_cmd_args (argc, argv, env, &ctx);

    log_info ("remoted started");
    // load configuration
    if (remoted_auth_conf (&ctx)) {
        log_error ("remoted cannot load configuration");
    }
    else
        log_info ("remoted configuration loaded");

    if (server_init (argc, argv, env, &srv, REMOTED_SERVICE_NAME) < 0) {
        handle_error("server_init < 0");
    }
    log_info ("remoted listening on %s", srv.spath);

    // TODO: here comes pledge (openbsd)

    // the service will loop until the end of time, a specific message, a signal
    remoted_main_loop (&srv, &ctx);

    // the application will shut down, and remove the service unix socket
    if (server_close (&srv) < 0) {
        handle_error("server_close < 0");
    }
    log_info ("remoted ended");

    remoted_free_ctx (&ctx);

    return EXIT_SUCCESS;
}