<?php

final class neato {

  const get_opt = '/opt/';
  const get_etc = '/etc/';  
  const get_bin = '/bin/';  
  const get_user_bin = '/usr/bin/';
  const get_super_user_bin = '/usr/sbin/';
  const get_user_local_bin = '/usr/local/bin/';
  
  protected function __construct() {
    
  }
    
  public static function is_installed($prog) {
    exec(self::get_user_bin . 'dpkg -s ' . safe_cmd($prog) . ' | ' . self::get_bin . 'grep "install ok installed"', $out, $exit_code);
    exec(self::get_user_bin . 'dpkg -s ' . safe_cmd($prog) . ' | ' . self::get_bin . 'grep ^Version', $output, $code);
    $version = str_replace('Version: ', '', $output[0]);
    return ($exit_code == 0) ? ['installed' => true, 'version' => $version] : ['installed' => false];
  }

  public static function service($name, $action = 'restart') {
    exec(self::get_super_user_bin . 'service ' . safe_cmd($name, $action), $output, $exit_code);
    display($output);
    check_for_error($exit_code, "Unable to {$action} Service called: {$name}");
    return $exit_code;
  }

  public static function systemctl($name, $action = 'enable') {
    exec(self::get_bin . 'systemctl ' . safe_cmd($action, $name), $output, $exit_code);
    check_for_error($exit_code, "Unable to {$action} Service called: {$name}");
    return $exit_code;
  }

  public static function upgrade($prog) {
    exec(self::get_user_bin . 'apt-get upgrade -y ' . safe_cmd_quotes($prog) . stderr(), $output, $exit_code);
    display($output);
    check_for_error($exit_code, "Unable to upgrade: {$prog}");
    return $exit_code;
  }

  public static function install($prog) {
    exec(self::get_user_bin . 'apt-get install -y ' . safe_cmd_quotes($prog) . stderr(), $output, $exit_code);
    display($output);
    check_for_error($exit_code, "Unable to install: {$prog}");
    return $exit_code;
  }

  public static function uninstall($prog) {
    exec(self::get_user_bin . 'apt-get remove -y ' . safe_cmd_quotes($prog) . stderr(), $output, $exit_code);
    display($output);
    check_for_error($exit_code, "Unable to uninstall: {$prog}");
    return $exit_code;
  }

  public static function add_repo($repo) {
    exec(self::get_user_bin . 'add-apt-repository -y -u ' . safe_cmd_quotes($repo) . stderr(), $output, $exit_code);
    display($output); // -u = DO UPDATE once done...
    check_for_error($exit_code, "Unable to uninstall: {$repo}");
    return $exit_code;
  }

  public static function update() {
    exec(self::get_user_bin . 'apt-get update -y ' . stderr(), $output, $exit_code);
    display($output);
    return $exit_code;
  }

  public static function full_update() {
    exec(self::get_user_bin . 'apt-get update -y && '. self::get_user_bin . 'apt-get upgrade -y && ' . self::get_user_bin . 'apt-get autoremove -y && ' . self::get_user_bin . 'apt-get autoclean -y' . stderr(), $output, $exit_code);
    display($output);
    return $exit_code;
  }

  public static function chmod_on_folders($dir, $kind) {
    if (!is_dir($dir)) {
      $exit_code = false;
    } else {
      $perm = get_perms($kind);
      exec(self::get_user_bin . 'find ' . safe_cmd($dir) . ' -type d -exec ' . self::get_bin . 'chmod ' . $perm . ' {} \;', $output, $exit_code);
    }
    check_for_error($exit_code, "Unable to chmod folders in: {$dir}");
    return $exit_code;
  }

  public static function chmod_on_files($dir, $kind) {
    if (!is_dir($dir)) {
      $exit_code = false;
    } else {
      $perm = get_perms($kind);
      exec(self::get_user_bin . 'find ' . safe_cmd($dir) . ' -type f -exec ' . self::get_bin . 'chmod ' . $perm . ' {} \;', $output, $exit_code);
    }
    check_for_error($exit_code, "Unable to chmod files in: {$dir}");
    return $exit_code;
  }

  public static function write_protect_file($file) {
    if (!is_file($file)) {
      $exit_code = false;
    } else {
      exec(self::get_user_bin . 'chattr +i ' . safe_cmd($file), $output, $exit_code);
    }
    check_for_error($exit_code, "Unable to write protect: {$file}");
    return $exit_code;
  }

  public static function unwrite_protect_file($file) {
    if (!is_file($file)) {
      $exit_code = false;
    } else {
      exec(self::get_user_bin . 'chattr -i ' . safe_cmd($file), $output, $exit_code);
    }
    check_for_error($exit_code, "Unable to un-write protect: {$file}");
    return $exit_code;
  }

}

// end of neato installer commands