<?php
namespace Xxx\Tests\Support;

/*
 * Run PHP code in a new process, after tests/php/bootstrap.php. This is
 * for code that ends the script (die, exit) or that needs php.ini
 * settings which cannot change at run time, such as sendmail_path.
 */
class PhpProcess {
  /*
   * Returns array('status' => exit code, 'stdout' => ..., 'stderr' => ...,
   * 'log' => what the code wrote to the PHP error log).
   */
  public static function run(string $code, array $env = array(), array $ini = array()): array {
    // One line, so that line numbers in $code stay the same; the code runs
    // in publish/, as the unit tests do
    return self::runPlain("require " . var_export(XXX_ROOT . '/tests/php/bootstrap.php', TRUE) . "; chdir(XXX_ROOT . '/publish');\n" . $code, $env, $ini);
  }

  // The same with only the test environment, for code that includes a site library itself
  public static function runBare(string $code, array $env = array(), array $ini = array()): array {
    return self::runPlain("require " . var_export(XXX_ROOT . '/tests/php/environment.php', TRUE) . ";\n" . $code, $env, $ini);
  }

  // The same without the bootstrap: the code loads what it needs itself
  public static function runPlain(string $code, array $env = array(), array $ini = array()): array {
    $script = tempnam(sys_get_temp_dir(), 'xxx-php-');
    $log = $script . '.log';
    file_put_contents($script, "<?php\n" . $code);
    $command = array(PHP_BINARY, '-d', 'display_errors=stderr', '-d', 'error_reporting=-1', '-d', "error_log=$log");
    foreach ($ini as $name => $value)
      array_push($command, '-d', "$name=$value");
    $command[] = $script;
    $env = array_merge(getenv(), array('XXX_TEST_LOG' => $log), $env);
    $process = proc_open($command, array(1 => array('pipe', 'w'), 2 => array('pipe', 'w')), $pipes, XXX_ROOT, $env);
    $stdout = stream_get_contents($pipes[1]);
    $stderr = stream_get_contents($pipes[2]);
    fclose($pipes[1]);
    fclose($pipes[2]);
    $status = proc_close($process);
    $logged = is_file($log) ? file_get_contents($log) : '';
    @unlink($script);
    @unlink($log);
    return array('status' => $status, 'stdout' => $stdout, 'stderr' => $stderr, 'log' => $logged);
  }
}