Base32.h

// SPDX-License-Identifier: Apache-2.0
//
// Copyright © 2017 Trust Wallet.

#pragma once

#include "Data.h"
#include "rust/bindgen/WalletCoreRSBindgen.h"
#include "rust/Wrapper.h"

#include <cassert>

namespace TW::Base32 {

/// Decode Base32 string, return bytes as Data
/// alphabet: Optional alphabet, if missing, default ALPHABET_RFC4648
inline bool decode(const std::string& encoded_in, Data& decoded_out, const char* alphabet_in = nullptr) {
    if (encoded_in.empty()) {
        return true;
    }
    Rust::CByteArrayResultWrapper res = Rust::decode_base32(encoded_in.c_str(), alphabet_in, false);
    if (res.isOk()) {
        decoded_out = res.unwrap().data;
        return true;
    }
    return false;
}


/// Encode bytes in Data to Base32 string
/// alphabet: Optional alphabet, if missing, default ALPHABET_RFC4648
inline std::string encode(const Data &val, const char *alphabet = nullptr, bool padding = false) {
    auto res = Rust::encode_base32(val.data(), val.size(), alphabet, padding);
    if (res.code != Rust::OK_CODE) {
        return {};
    }
    std::string encoded_str(res.result);
    Rust::free_string(res.result);
    return encoded_str;
}

} // namespace TW::Base32