/*
Copyright 2019 Intel Corporation

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

#include "utils.h"
#include <vector>
#include <string>
#include <cpprest/streams.h>

std::string util_encode_base64(std::string str)
{
    std::vector<unsigned char> strVector(str.begin(), str.end());
    utility::string_t base64 = utility::conversions::to_base64(strVector);
    std::string encodedString = utility::conversions::to_utf8string(base64);

    return encodedString;
}

std::string util_decode_base64(std::string str)
{
    utility::string_t serializedData = utility::conversions::to_string_t(str);
    std::vector<unsigned char> strVector = utility::conversions::from_base64(serializedData);
    std::string decodedString(strVector.begin(), strVector.end());

    return decodedString;
}

bool util_is_printable(std::string str)
{
    for (char c : str)
    {
        if (!std::isprint(c))
        {
            return false;
        }
    }

    return true;
}

bool util_format_uuid(std::vector<unsigned char> uuid_bytes, std::string& uuid_string)
{
    if (uuid_bytes.size() != 16) return false;

    char tmp[100];
    snprintf(tmp, 100, 
        "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
        uuid_bytes[3], uuid_bytes[2], uuid_bytes[1], uuid_bytes[0],
        uuid_bytes[5], uuid_bytes[4],
        uuid_bytes[7], uuid_bytes[6],
        uuid_bytes[8], uuid_bytes[9],
        uuid_bytes[10], uuid_bytes[11], uuid_bytes[12], uuid_bytes[13], uuid_bytes[14], uuid_bytes[15]);

    uuid_string = tmp;

    return true;
}