util.h

/*******************************************************************************
The MIT License (MIT)

Copyright (c) 2015 Maxim Zhurovich <zhurovich@gmail.com>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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*******************************************************************************/

#ifndef CTFO_UTIL_H
#define CTFO_UTIL_H

#include "../Current/Bricks/strings/strings.h"
#include "../Current/Bricks/util/random.h"

#include "schema_base.h"

namespace CTFO {
static constexpr uint64_t OLD_ID_RANGE = static_cast<uint64_t>(1e18);
static constexpr uint64_t ID_RANGE = static_cast<uint64_t>(1e15);
static constexpr UID old_admin_uid = static_cast<UID>(1000000000000000ull);
static constexpr UID admin_uid = static_cast<UID>(1000000000000ull);

inline UID RandomUID() { return static_cast<UID>(RandomUInt64(1 * ID_RANGE + 1, 2 * ID_RANGE - 1)); }

inline CID RandomCID() { return static_cast<CID>(RandomUInt64(2 * ID_RANGE + 1, 3 * ID_RANGE - 1)); }

inline std::string RandomToken() {
  return current::strings::Printf("t%020llu", RandomUInt64(3 * ID_RANGE + 1, 4 * ID_RANGE - 1));
}

inline OID RandomOID() { return static_cast<OID>(RandomUInt64(4 * ID_RANGE + 1, 5 * ID_RANGE - 1)); }

// "05" followed by 18 digits <=> NID, notification ID.

// TODO(dkorolev): Change string representations into the ones three characters shorter. Some day soon. Maybe.

inline std::string UIDToString(const UID uid) {
  return current::strings::Printf("u%020llu", static_cast<uint64_t>(uid));
}

inline UID StringToUID(const std::string& s) {
  if (s.length() == 21 && s[0] == 'u') {  // 'u' + 20 digits of `uint64_t` decimal representation.
    return static_cast<UID>(current::FromString<uint64_t>(s.substr(1)));
  }
  return UID::INVALID_USER;
}

inline std::string CIDToString(const CID cid) {
  return current::strings::Printf("c%020llu", static_cast<uint64_t>(cid));
}

inline CID StringToCID(const std::string& s) {
  if (s.length() == 21 && s[0] == 'c') {  // 'c' + 20 digits of `uint64_t` decimal representation.
    return static_cast<CID>(current::FromString<uint64_t>(s.substr(1)));
  }
  return CID::INVALID_CARD;
}

inline std::string OIDToString(const OID oid) {
  return current::strings::Printf("o%020llu", static_cast<uint64_t>(oid));
}

inline OID StringToOID(const std::string& s) {
  if (s.length() == 21 && s[0] == 'o') {  // 'o' + 20 digits of `uint64_t` decimal representation.
    return static_cast<OID>(current::FromString<uint64_t>(s.substr(1)));
  }
  return OID::INVALID_COMMENT;
}

inline std::string NIDToString(const NID nid) {
  return current::strings::Printf("n%020llu", static_cast<uint64_t>(nid));
}

inline NID StringToNID(const std::string& s) {
  if (s.length() == 21 && s[0] == 'n') {  // 'n' + 20 digits of `uint64_t` decimal representation.
    return static_cast<NID>(current::FromString<uint64_t>(s.substr(1)));
  }
  return NID::INVALID_NOTIFICATION;
}
}  // namespace CTFO

#endif  // CTFO_UTIL_H