// Copyright 2020 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine License
// Agreement.
#ifndef WVCDM_CORE_POLICY_TIMERS_V16_H_
#define WVCDM_CORE_POLICY_TIMERS_V16_H_

#include <inttypes.h>

#include "license_protocol.pb.h"
#include "policy_timers.h"
#include "wv_cdm_types.h"
#include "wv_class_utils.h"

namespace wvcdm {
// OEMCrypto v16 and core messages introduced changes to how duration values
// and clocks should be evaluated. This class provides backward compatibility
// for licenses that do not include a core message. Durations are handled
// in the same way as in earlier releases.
//
// Backward compatibility may be needed if
//  * OEMCrypto has not been upgraded to v16
//  * Licenses were persisted before the device was upgraded to v16
//  * License service does not yet support core messages
class PolicyTimersV16 : public PolicyTimers {
 public:
  PolicyTimersV16() = default;
  WVCDM_DISALLOW_COPY_AND_MOVE(PolicyTimersV16);

  ~PolicyTimersV16() override {}

  // UpdateLicense is used in handling a license response, a renewal response,
  // or when restoring or releasing a persistent license.
  // In a renewal the response may only contain policy fields that have
  // changed. In this case an exact copy is not what we want to happen.
  // |renewal_start_time_| is set to the time mentioned in the renewal
  // response.
  // UpdateLicense will return false if |license_start_time| is not
  // present or playback is not allowed due to policy or timer duration
  // expiration.
  bool UpdateLicense(int64_t current_time,
                     const video_widevine::License& license) override;

  // Call this on first decrypt to set the start of playback.
  void BeginDecryption(int64_t current_time) override;

  // Renewal related methods
  bool HasRenewalDelayExpired(int64_t current_time) override;
};  // class PolicyTimersV16
}  // namespace wvcdm
#endif  // WVCDM_CORE_POLICY_TIMERS_V16_H_