/*

 * commands.c     -- user commands handling

 * 

 * Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net>

 *

 * This program 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, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

 * USA

 */

#include <string.h>

#include "commands.h"

#include "jabglue.h"

#include "roster.h"

#include "screen.h"

#include "compl.h"

#include "hooks.h"

#include "hbuf.h"

#include "utf8.h"

#include "utils.h"

// Commands callbacks

void do_roster(char *arg);

void do_status(char *arg);

void do_add(char *arg);

void do_del(char *arg);

void do_group(char *arg);

void do_say(char *arg);

void do_msay(char *arg);

void do_buffer(char *arg);

void do_clear(char *arg);

void do_info(char *arg);

void do_rename(char *arg);

void do_move(char *arg);

// Global variable for the commands list

static GSList *Commands;

//  cmd_add()

// Adds a command to the commands list and to the CMD completion list

void cmd_add(const char *name, const char *help,

        guint flags_row1, guint flags_row2, void (*f)())

{

  cmd *n_cmd = g_new0(cmd, 1);

  strncpy(n_cmd->name, name, 32-1);

  n_cmd->help = help;

  n_cmd->completion_flags[0] = flags_row1;

  n_cmd->completion_flags[1] = flags_row2;

  n_cmd->func = f;

  Commands = g_slist_append(Commands, n_cmd);

  // Add to completion CMD category

  compl_add_category_word(COMPL_CMD, name);

}

//  cmd_init()

// ...

void cmd_init(void)

{

  cmd_add("add", "Add a jabber user", COMPL_JID, 0, &do_add);

  cmd_add("buffer", "Manipulate current buddy's buffer (chat window)",

          COMPL_BUFFER, 0, &do_buffer);

  cmd_add("clear", "Clear the dialog window", 0, 0, &do_clear);

  cmd_add("del", "Delete the current buddy", 0, 0, &do_del);

  cmd_add("group", "Change group display settings", COMPL_GROUP, 0, &do_group);

  cmd_add("help", "Display some help", COMPL_CMD, 0, NULL);

  cmd_add("info", "Show basic infos on current buddy", 0, 0, &do_info);

  cmd_add("move", "Move the current buddy to another group", COMPL_GROUPNAME,

          0, &do_move);

  cmd_add("msay", "Send a multi-lines message to the selected buddy",

          COMPL_MULTILINE, 0, &do_msay);

  //cmd_add("nick");

  cmd_add("quit", "Exit the software", 0, 0, NULL);

  cmd_add("rename", "Rename the current buddy", 0, 0, &do_rename);

  //cmd_add("request_auth");

  cmd_add("roster", "Manipulate the roster/buddylist", COMPL_ROSTER, 0,

          &do_roster);

  cmd_add("say", "Say something to the selected buddy", 0, 0, &do_say);

  //cmd_add("search");

  //cmd_add("send_auth");

  cmd_add("status", "Show or set your status", COMPL_STATUS, 0, &do_status);

  // Status category

  compl_add_category_word(COMPL_STATUS, "online");

  compl_add_category_word(COMPL_STATUS, "avail");

  compl_add_category_word(COMPL_STATUS, "invisible");

  compl_add_category_word(COMPL_STATUS, "free");

  compl_add_category_word(COMPL_STATUS, "dnd");

  compl_add_category_word(COMPL_STATUS, "busy");

  compl_add_category_word(COMPL_STATUS, "notavail");

  compl_add_category_word(COMPL_STATUS, "away");

  // Roster category

  compl_add_category_word(COMPL_ROSTER, "bottom");

  compl_add_category_word(COMPL_ROSTER, "hide_offline");

  compl_add_category_word(COMPL_ROSTER, "show_offline");

  compl_add_category_word(COMPL_ROSTER, "top");

  compl_add_category_word(COMPL_ROSTER, "unread_first");

  compl_add_category_word(COMPL_ROSTER, "unread_next");

  // Roster category

  compl_add_category_word(COMPL_BUFFER, "bottom");

  compl_add_category_word(COMPL_BUFFER, "clear");

  compl_add_category_word(COMPL_BUFFER, "top");

  // Group category

  compl_add_category_word(COMPL_GROUP, "toggle");

  // Multi-line (msay) category

  compl_add_category_word(COMPL_MULTILINE, "abort");

  compl_add_category_word(COMPL_MULTILINE, "begin");

  compl_add_category_word(COMPL_MULTILINE, "send");

}

//  cmd_get

// Finds command in the command list structure.

// Returns a pointer to the cmd entry, or NULL if command not found.

cmd *cmd_get(const char *command)

{

  const char *p1, *p2;

  char *com;

  GSList *sl_com;

  // Ignore leading '/'

  for (p1 = command ; *p1 == '/' ; p1++)

    ;

  // Locate the end of the command

  for (p2 = p1 ; *p2 && (*p2 != ' ') ; p2++)

    ;

  // Copy the clean command

  com = g_strndup(p1, p2-p1);

  // Look for command in the list

  for (sl_com=Commands; sl_com; sl_com = g_slist_next(sl_com)) {

    if (!strcasecmp(com, ((cmd*)sl_com->data)->name))

      break;

  }

  g_free(com);

  if (sl_com)       // Command has been found.

    return (cmd*)sl_com->data;

  return NULL;

}

//  send_message(msg)

// Write the message in the buddy's window and send the message on

// the network.

void send_message(const char *msg)

{

  const char *jid;

  if (!current_buddy) {

    scr_LogPrint("No buddy currently selected.");

    return;

  }

  jid = CURRENT_JID;

  if (!jid) {

    scr_LogPrint("No buddy currently selected.");

    return;

  }

  // local part (UI, logging, etc.)

  hk_message_out(jid, 0, msg);

  // Network part

  jb_send_msg(jid, msg);

}

//  process_line(line)

// Process a command/message line.

// If this isn't a command, this is a message and it is sent to the

// currently selected buddy.

int process_line(char *line)

{

  char *p;

  cmd *curcmd;

  if (!*line) { // User only pressed enter

    if (scr_get_multimode()) {

      scr_append_multiline("");

      return 0;

    }

    if (current_buddy) {

      scr_set_chatmode(TRUE);

      buddy_setflags(BUDDATA(current_buddy), ROSTER_FLAG_LOCK, TRUE);

      scr_ShowBuddyWindow();

    }

    return 0;

  }

  if (*line != '/') {

    if (scr_get_multimode())

      scr_append_multiline(line);

    else

      do_say(line);

    return 0;

  }

  /* It is a command */

  // Remove trailing spaces:

  for (p=line ; *p ; p++)

    ;

  for (p-- ; p>line && (*p == ' ') ; p--)

    *p = 0;

  // Command "quit"?

  if (!strncasecmp(line, "/quit", 5))

    if (!line[5] || line[5] == ' ')

      return 255;

  // Commands handling

  curcmd = cmd_get(line);

  if (!curcmd) {

    scr_LogPrint("Unrecognized command, sorry.");

    return 0;

  }

  if (!curcmd->func) {

    scr_LogPrint("Not yet implemented, sorry.");

    return 0;

  }

  // Lets go to the command parameters

  for (line++; *line && (*line != ' ') ; line++)

    ;

  // Skip spaces

  while (*line && (*line == ' '))

    line++;

  // Call command-specific function

  (*curcmd->func)(line);

  return 0;

}

/* Commands callback functions */

void do_roster(char *arg)

{

  if (!strcasecmp(arg, "top")) {

    scr_RosterTop();

    update_roster = TRUE;

  } else if (!strcasecmp(arg, "bottom")) {

    scr_RosterBottom();

    update_roster = TRUE;

  } else if (!strcasecmp(arg, "hide_offline")) {

    buddylist_set_hide_offline_buddies(TRUE);

    if (current_buddy)

      buddylist_build();

    update_roster = TRUE;

  } else if (!strcasecmp(arg, "show_offline")) {

    buddylist_set_hide_offline_buddies(FALSE);

    buddylist_build();

    update_roster = TRUE;

  } else if (!strcasecmp(arg, "unread_first")) {

    scr_RosterUnreadMessage(0);

  } else if (!strcasecmp(arg, "unread_next")) {

    scr_RosterUnreadMessage(1);

  } else

    scr_LogPrint("Unrecognized parameter!");

}

void do_status(char *arg)

{

  enum imstatus st;

  if (!arg || (*arg == 0)) {

    scr_LogPrint("Your status is: %c", imstatus2char[jb_getstatus()]);

    return;

  }

  if (!strcasecmp(arg, "offline"))        st = offline;

  else if (!strcasecmp(arg, "online"))    st = available;

  else if (!strcasecmp(arg, "avail"))     st = available;

  else if (!strcasecmp(arg, "away"))      st = away;

  else if (!strcasecmp(arg, "invisible")) st = invisible;

  else if (!strcasecmp(arg, "dnd"))       st = dontdisturb;

  else if (!strcasecmp(arg, "busy"))      st = occupied;

  else if (!strcasecmp(arg, "notavail"))  st = notavail;

  else if (!strcasecmp(arg, "free"))      st = freeforchat;

  else {

    scr_LogPrint("Unrecognized parameter!");

    return;

  }

  // XXX special case if offline??

  jb_setstatus(st, NULL);  // TODO handle message (instead of NULL)

}

void do_add(char *arg)

{

  if (!arg || (*arg == 0)) {

    scr_LogPrint("Wrong usage");

    return;

  }

  // FIXME check arg =~ jabber id

  // 2nd parameter = optional nickname (XXX NULL for now...)

  jb_addbuddy(arg, NULL);

  scr_LogPrint("Sent presence notfication request to <%s>", arg);

}

void do_del(char *arg)

{

  const char *jid;

  if (arg && (*arg)) {

    scr_LogPrint("Wrong usage");

    return;

  }

  if (!current_buddy) return;

  jid = buddy_getjid(BUDDATA(current_buddy));

  if (!jid) return;

  scr_LogPrint("Removing <%s>...", jid);

  jb_delbuddy(jid);

}

void do_group(char *arg)

{

  gpointer group;

  guint leave_windowbuddy;

  if (!arg || (*arg == 0)) {

    scr_LogPrint("Missing parameter");

    return;

  }

  if (!current_buddy) return;

  group = buddy_getgroup(BUDDATA(current_buddy));

  // We'll have to redraw the chat window if we're not currently on the group

  // entry itself, because it means we'll have to leave the current buddy

  // chat window.

  leave_windowbuddy = (group != BUDDATA(current_buddy));

  if (!(buddy_gettype(group) & ROSTER_TYPE_GROUP)) {

    scr_LogPrint("You need to select a group");

    return;

  }

  if (!strcasecmp(arg, "expand") || !strcasecmp(arg, "unfold")) {

    buddy_setflags(group, ROSTER_FLAG_HIDE, FALSE);

  } else if (!strcasecmp(arg, "shrink") || !strcasecmp(arg, "fold")) {

    buddy_setflags(group, ROSTER_FLAG_HIDE, TRUE);

  } else if (!strcasecmp(arg, "toggle")) {

    buddy_setflags(group, ROSTER_FLAG_HIDE,

            !(buddy_getflags(group) & ROSTER_FLAG_HIDE));

  } else {

    scr_LogPrint("Unrecognized parameter!");

    return;

  }

  buddylist_build();

  update_roster = TRUE;

  if (leave_windowbuddy) scr_ShowBuddyWindow();

}

void do_say(char *arg)

{

  gpointer bud;

  scr_set_chatmode(TRUE);

  if (!current_buddy) {

    scr_LogPrint("Who are you talking to??");

    return;

  }

  bud = BUDDATA(current_buddy);

  if (!(buddy_gettype(bud) & ROSTER_TYPE_USER)) {

    scr_LogPrint("This is not a user");

    return;

  }