<?php

class Mail {
  protected $header = array();
  protected $env_from = false;

  public function set($name, $value)
  {
    $this->header[$name][] = $value;
  }

  public function env_from($value)
  {
    $this->env_from = $value;
  }

  private function content_type($file)
  {
    if (($fh = popen('/usr/bin/file -i -b ' . escapeshellarg($file), 'r')) !== false) {
      $type = fread($fh, 1024);
      fclose($fh);
      $parts = explode(';', $type);
      return trim($parts[0]);
    } else
      return mime_content_type($file);
  }

  public function attach($filename,$basename=false,$content_type=false)
  {
  }

  public function send($body)
  {
    if (!array_key_exists('From', $this->header))
      throw new Exception('No sender given.');
    if (!array_key_exists('To', $this->header))
      throw new Exception('No recipient given.');
    if (!array_key_exists('Subject', $this->header))
      throw new Exception('No subject given.');
    if (empty($body))
      throw new Exception('Mail body empty.');

    if (!array_key_exists('Content-Type', $this->header))
      $this->set('Content-Type', 'text/plain; charset=UTF-8');
    if (!array_key_exists('Content-Disposition', $this->header))
      $this->set('Content-Disposition', 'inline');
    if (!array_key_exists('Content-Transfer-Encoding', $this->header))
      $this->set('Content-Transfer-Encoding', '8bit');

    $header = '';
    foreach ($this->header as $name => $values) {
      if ($name == 'To' || $name == 'Subject')
	continue;
      else
	$header .= $name . ': ' . implode(', ', $values) . "\r\n";
    }

    $opts = '-t';
    $opts .= strlen($this->env_from) ? ' -f '.$this->env_from : '';
    $result = mail(implode(',',$this->header['To']), $this->header['Subject'][0], $body, $header, $opts);

    return $result;
  }
}

?>