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#pragma once
#include "utils.hpp"
#include <sodium/crypto_generichash_blake2b.h>
#include <stdexcept>
#include <unordered_map>
namespace odhtdb
{
const int HASH_BYTE_SIZE = 32;
class HashException : public std::runtime_error
{
public:
HashException(const std::string &errMsg) : std::runtime_error(errMsg) {}
};
class Hash
{
public:
Hash();
// Throws HashException on failure
Hash(const void *input, const size_t inputSize);
void* getData() const { return (void*)data; }
size_t getSize() const { return HASH_BYTE_SIZE; }
size_t operator()() const;
bool operator==(const Hash &other) const;
std::string toString() const;
private:
char data[HASH_BYTE_SIZE];
};
struct HashHasher
{
size_t operator()(const Hash &hash) const
{
return hash();
}
};
template <typename ValueType>
using MapHashKey = std::unordered_map<Hash, ValueType, HashHasher>;
}
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