/*
 * Copyright (C) 2024 - 2024:
 * The Trinitrix Project <benedikt.peetz@b-peetz.de,
 * antifallobst@systemausfall.org, sils@sils.li> SPDX-License-Identifier:
 * GPL-3.0-or-later
 *
 * This file is part of Trinitrix.
 *
 * 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 <https://www.gnu.org/licenses/>.
 */

#include "../../dist/interface.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define println(args...)                                                      \
  fprintf (log_file, "\33[32;1m(plugin):\33[0m \33[34;1m");                   \
  fprintf (log_file, args);                                                   \
  fprintf (log_file, "\n\33[0m");                                             \
  fflush (log_file);

#define eprintln(args...)                                                     \
  fprintf (log_file, "\33[32;1m(plugin):\33[0m\33[31;1m ");                   \
  fprintf (log_file, args);                                                   \
  fprintf (log_file, "\n\33[0m");                                             \
  fflush (log_file);

int is_first_log_file_open = 1;
FILE *
get_log_file ()
{
  FILE *log_file;

  if (is_first_log_file_open)
    {
      is_first_log_file_open = 0;
      log_file = fopen ("plugin.txt", "w");
    }
  else
    {
      log_file = fopen ("plugin.txt", "wa");
    }

  if (log_file == NULL)
    {
      printf ("Error opening file!\n");
      exit (1);
    }

  return log_file;
}

void
handle_error ()
{
  FILE *log_file = get_log_file ();
  eprintln ("GOT an error");

  int error_length = last_error_length ();
  char *error = malloc (error_length);
  last_error_message (error, error_length);
  eprintln ("Encountered error: %s", error);
  free (error);
}

void
set_normal_mode ()
{
  if (!trinitrix.api.ui.set_mode (Normal))
    handle_error ();
}
void
set_command_mode ()
{
  if (!trinitrix.api.ui.set_mode (Command))
    handle_error ();
}
void
set_insert_mode ()
{
  if (!trinitrix.api.ui.set_mode (Insert))
    handle_error ();
}
void
print_hi ()
{
  if (!trinitrix.api.raw.raise_error ("hi!"))
    handle_error ();
}
void
print_warning ()
{
  if (!trinitrix.api.raw.raise_error (
          "To exit trinitrix use 'trinitrix.api.exit()' instead!"))
    handle_error ();
}

int
plugin_main ()
{
  FILE *log_file = get_log_file ();

  println ("Hi, setting first keymap!");
  if (!trinitrix.api.keymaps.add ("ci", "<ESC>", set_normal_mode))
    handle_error ();
  println ("Done setting that keymap");

  if (!trinitrix.api.keymaps.add ("n", ":", set_command_mode))
    handle_error ();

  trinitrix.api.keymaps.add ("n", "i", set_insert_mode);
  trinitrix.api.keymaps.add ("n", "<TAB>", trinitrix.api.ui.cycle_planes);

  // a simple test to prove that key chords work
  trinitrix.api.keymaps.add ("ni", "jj", print_hi);

  trinitrix.api.keymaps.add ("n", "q", trinitrix.api.exit);

  // Help people
  trinitrix.api.keymaps.add ("n", "<C-c>", print_warning);

  // workaround to avoid c de-allocating our nice strings
  while (1)
    {
    };

  return EXIT_SUCCESS;
}