/*

   Copyright 2009,2010 Andreas Fett

   Copyright 2010 Mikael Berthe

  Module "extsay"     -- adds a /extsay command

                         Spawns an external editor

  Original code from Andreas Fett.

This module is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <unistd.h>

#include <stdlib.h>

#include <sys/wait.h>

#include <glib/gstdio.h>

#include <mcabber/modules.h>

#include <mcabber/commands.h>

#include <mcabber/screen.h>

static void extsay_init(void);

static void extsay_uninit(void);

/* Module description */

module_info_t info_extsay = {

        .mcabber_version = "0.10.0",

        .requires        = NULL,

        .init            = extsay_init,

        .uninit          = extsay_uninit,

};

// XXX Not very clean, internal function...

char *load_message_from_file(const char *filename);

static char* spawn_editor() {

  GError *err = NULL;

  gchar *argv[] = { NULL, NULL };

  gchar *tmpfile = NULL;

  gchar *tmpl = "mcabber-XXXXXX";

  gchar *msg;

  gboolean ret;

  gint fd;

  gint exit_status = 0;

  argv[0] = (gchar*)g_getenv("EDITOR");

  if (argv[0] == NULL) {

    scr_LogPrint(LPRINT_NORMAL, "Environment variable EDITOR not set.");

    return NULL;

  }

  fd = g_file_open_tmp(tmpl, &tmpfile, &err);

  if ( fd < 0 ) {

    scr_LogPrint(LPRINT_NORMAL, err->message);

    g_error_free(err);

    return NULL;

  }

  close(fd);

  argv[1] = tmpfile;

  ret = g_spawn_sync(NULL, argv, NULL,

                     G_SPAWN_CHILD_INHERITS_STDIN|G_SPAWN_SEARCH_PATH,

                     NULL, NULL, NULL, NULL, &exit_status, &err);

  readline_refresh_screen();

  if (!ret) {

    scr_LogPrint(LPRINT_NORMAL, err->message);

    return NULL;

  }

  if (WEXITSTATUS(exit_status) != EXIT_SUCCESS) {

    scr_LogPrint(LPRINT_NORMAL,

                 "Editor exited with error, discarding message.");

    return NULL;

  }

  msg = load_message_from_file(tmpfile);

  if (g_unlink(tmpfile) != 0) {

    scr_LogPrint(LPRINT_NORMAL,"Warning, could not remove temp file.");

  }

 return msg;

}

static void do_extsay(char *args)

{

  char *msg = spawn_editor();

  if (msg) {

    say_cmd(msg, 0);

    g_free(msg);

  }

}

/* Initialization */

static void extsay_init(void)

{

  /* Add command */

  cmd_add("extsay", "Use external editor to write a message",

          0, 0, do_extsay, NULL);

}

/* Deinitialization */

static void extsay_uninit(void)

{

  /* Unregister command */

  cmd_del("extsay");

}

/* vim: set expandtab cindent cinoptions=>2\:2(0:  For Vim users... */