/*

* ASN.1 Time Representation

* (C) 1999-2007,2012 Jack Lloyd

*

* Botan is released under the Simplified BSD License (see license.txt)

*/

#ifndef BOTAN_ASN1_TIME_H_

#define BOTAN_ASN1_TIME_H_

#include <botan/asn1_obj.h>

#include <chrono>

namespace Botan {

/**

* X.509 Time

*/

class BOTAN_PUBLIC_API(2,0) X509_Time final : public ASN1_Object

   {

   public:

      /// DER encode a X509_Time

      void encode_into(DER_Encoder&) const override;

      // Decode a BER encoded X509_Time

      void decode_from(BER_Decoder&) override;

      /// Return an internal string representation of the time

      std::string to_string() const;

      /// Returns a human friendly string replesentation of no particular formatting

      std::string readable_string() const;

      /// Return if the time has been set somehow

      bool time_is_set() const;

      ///  Compare this time against another

      int32_t cmp(const X509_Time& other) const;

      /// Create an invalid X509_Time

      X509_Time() = default;

      /// Create a X509_Time from a time point

      explicit X509_Time(const std::chrono::system_clock::time_point& time);

      /// Create an X509_Time from string

      X509_Time(const std::string& t_spec, ASN1_Tag tag);

      /// Returns a STL timepoint object

      std::chrono::system_clock::time_point to_std_timepoint() const;

      /// Return time since epoch

      uint64_t time_since_epoch() const;

   private:

      void set_to(const std::string& t_spec, ASN1_Tag);

      bool passes_sanity_check() const;

      uint32_t m_year = 0;

      uint32_t m_month = 0;

      uint32_t m_day = 0;

      uint32_t m_hour = 0;

      uint32_t m_minute = 0;

      uint32_t m_second = 0;

      ASN1_Tag m_tag = NO_OBJECT;

   };

/*

* Comparison Operations

*/

bool BOTAN_PUBLIC_API(2,0) operator==(const X509_Time&, const X509_Time&);

bool BOTAN_PUBLIC_API(2,0) operator!=(const X509_Time&, const X509_Time&);

bool BOTAN_PUBLIC_API(2,0) operator<=(const X509_Time&, const X509_Time&);

bool BOTAN_PUBLIC_API(2,0) operator>=(const X509_Time&, const X509_Time&);

bool BOTAN_PUBLIC_API(2,0) operator<(const X509_Time&, const X509_Time&);

bool BOTAN_PUBLIC_API(2,0) operator>(const X509_Time&, const X509_Time&);

typedef X509_Time ASN1_Time;

}

#endif