// Copyright © 2017-2020 Trust Wallet.

//

// This file is part of Trust. The full Trust copyright notice, including

// terms governing use, modification, and redistribution, is contained in the

// file LICENSE at the root of the source code distribution tree.

#include "../BinaryCoding.h"

#include "Name.h"

#include <boost/algorithm/string/trim.hpp>

#include <stdexcept>

using namespace TW;

using namespace TW::EOS;

Name::Name(const std::string& str) {

if (str.size() > 13) {

throw std::invalid_argument(str + ": size too long!");

}

int i = 0;

while (i < std::min(size_t(12), str.size())) {

value |= (toSymbol(str[i]) & 0x1f) << (64 - (5 * (i + 1)));

i++;

}

if (i == 12)

value |= (toSymbol(str[i]) & 0x0f);

}

uint64_t Name::toSymbol(char c) const noexcept {

if (c >= 'a' && c <= 'z')

return c - 'a' + 6;

if (c >= '1' && c <= '5')

return c - '1' + 1;

return 0;

}

std::string Name::string() const noexcept {

static const char* charMap = ".12345abcdefghijklmnopqrstuvwxyz";

std::string str(13,'.');

uint64_t tmp = value;

str[12] = charMap[tmp & 0x0f];

tmp >>= 4;

for( uint32_t i = 1; i <= 12; ++i ) {

char c = charMap[tmp & 0x1f];

str[12-i] = c;

tmp >>= 5;

}

boost::algorithm::trim_right_if( str, []( char c ){ return c == '.'; } );

return str;

}

void Name::serialize(Data& o) const noexcept {

encode64LE(value, o);

}