<?php
namespace nur\sery\wip\app\cli;

use nur\sery\ExitError;
use nur\sery\os\proc\Cmd;
use nur\sery\os\sh;
use nur\sery\output\msg;
use nur\sery\wip\app\app2;
use nur\sery\wip\app\RunFile;

class bg_launcher {
  static function _start(array $args, Runfile $runfile): void {
    $pid = pcntl_fork();
    if ($pid == -1) {
      # parent, impossible de forker
      throw new ExitError(app2::EC_FORK_PARENT, "Unable to fork");
    } elseif (!$pid) {
      # child, fork ok
      $runfile->wfPrepare($pid);
      $logfile = $runfile->getLogfile() ?? "/tmp/NULIB_APP_app_start.log";
      $exitcode = app2::EC_FORK_CHILD;
      try {
        # puis lancer la commande
        $cmd = new Cmd($args);
        $cmd->addSource("/g/init.env");
        $cmd->addRedir("both", $logfile, true);
        $cmd->fork_exec($exitcode, false);
        sh::_waitpid(-$pid, $exitcode);
      } finally {
        $runfile->wfReaped($exitcode);
      }
    }
  }

  static function _stop(Runfile $runfile): bool {
    $data = $runfile->read();
    $pid = $runfile->_getCid($data);
    msg::action("stop $pid");
    if ($runfile->wfKill($reason)) {
      msg::asuccess();
      return true;
    } else {
      msg::afailure($reason);
      return false;
    }
  }
}