/* parc
 * Copyright (C) 2025 Ekaitz Zarraga <ekaitz@elenq.tech>
 *
 * 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 3 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/>.
 */

/*
 * XTERM escape sequence reference:
 * https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
 */

#include <stdio.h>

#define ESC '\x1b'

const char CSI_LEAD[3] = { ESC, '[', '\0'};

void
ui_cursor_move (int x, int y)
{
  /*
   * Also valid with CSI<L>;<C>f being <L> and <C> line number and column
   * number respectively. In ttys, cursor starts at 1,1
   */
  printf ("%s%d;%dH", CSI_LEAD, y, x);
  fflush (stdout);
}

void
ui_cursor_show (void)
{
  printf ("%s?25h", CSI_LEAD);
  fflush (stdout);
}

void
ui_cursor_hide (void)
{
  printf ("%s?25l", CSI_LEAD);
  fflush (stdout);
}

void
ui_screen_erase (void)
{
  printf ("%s2J", CSI_LEAD);
  fflush (stdout);
}


void
ui_alternate_buffer_enable (void)
{
  printf ("%s?1049h", CSI_LEAD);
  fflush (stdout);
}

void
ui_alternate_buffer_disable (void)
{
  printf ("%s?1049l", CSI_LEAD);
  fflush (stdout);
}