<?php

final class LegalpadDocumentSignature
  extends LegalpadDAO
  implements PhabricatorPolicyInterface {

  const VERIFIED = 0;
  const UNVERIFIED = 1;

  protected $documentPHID;
  protected $documentVersion;
  protected $signerPHID;
  protected $signatureData = array();
  protected $verified;
  protected $secretKey;

  public function getConfiguration() {
    return array(
      self::CONFIG_SERIALIZATION => array(
        'signatureData' => self::SERIALIZATION_JSON,
      ),
    ) + parent::getConfiguration();
  }

  public function save() {
    if (!$this->getSecretKey()) {
      $this->setSecretKey(Filesystem::readRandomCharacters(20));
    }
    return parent::save();
  }

  public function isVerified() {
    return $this->getVerified() != self::UNVERIFIED;
  }
/* -(  PhabricatorPolicyInterface  )----------------------------------------- */

  public function getCapabilities() {
    return array(
      PhabricatorPolicyCapability::CAN_VIEW,
    );
  }

  public function getPolicy($capability) {
    switch ($capability) {
      case PhabricatorPolicyCapability::CAN_VIEW:
        return PhabricatorPolicies::POLICY_USER;
    }
  }

  public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
    return false;
  }

  public function describeAutomaticCapability($capability) {
    return null;
  }

}