/* Calcite, src/user-apps/init/init.c
 * Copyright 2025-2026 Benji Dial
 *
 * 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 <kernel-public/process.h>
#include <calcite/file-streams.h>
#include <kernel-public/files.h>
#include <kernel-public/ipc.h>
#include <calcite/syscalls.h>

#define MAX_LINE_LENGTH 1023

void main() {

  struct file_stream *rc;
  if (open_file_stream("root://calcite/init.rc", &rc) != FAR_SUCCESS)
    return;

  int at_file_end = 0;

  while (!at_file_end) {

    char line[MAX_LINE_LENGTH + 1];
    int line_length = 0;

    while (1) {

      char ch = read_file_stream_byte(rc);

      if (ch == -1) {
        at_file_end = 1;
        break;
      }
      if (ch == '\n')
        break;
      if (line_length == MAX_LINE_LENGTH) {
        while (1) {
          ch = read_file_stream_byte(rc);
          if (ch == -1 || ch == '\n')
            break;
        }
        break;
      }

      line[line_length++] = ch;

    }

    if (line_length == 0 || line[0] == '#')
      continue;

    line[line_length] = 0;

    struct process_start_info psi;
    psi.forwared_envvar_count = 0;
    psi.set_envvar_count = 0;

    start_elf(line, &psi);

  }

}