#pragma once
#include "token.hpp"
#include <iostream>
#include <regex>
#include <string>

class HearthstoneApi {
  public:
    HearthstoneApi(Token &&iToken);
    std::uint64_t numberOfCards(const std::string &iApiResponse) const;

  private:
    std::string authorizationHeader();
    std::string makeApiRequest(const std::string &iUrl) const;
    static size_t curlCallbackStringOutput(void *iContent, size_t iSize, size_t iNmemb, std::string *iS);

    /**
     * @brief
     * @param[in] iJsonContent The std::string which contains Json (Battle.net API response for instance)
     * @param[in] iKeyValueRegex The regex used to retrieve value from (key, value) pair
     * An example: "\"cardCount\":(\\d+)"
     */
    template <typename T> T valueInJson(const std::string &iJsonContent, const std::string &iKeyValueRegex) const {
        const std::regex iRegex{iKeyValueRegex};
        std::smatch aMatches;
        if (std::regex_search(iJsonContent, aMatches, iRegex)) {
            const std::string kValueString{aMatches[1].str()};
            T aValue;
            const auto kConversionStatus =
                std::from_chars(kValueString.data(), kValueString.data() + kValueString.size(), aValue);
            if (kConversionStatus.ec == std::errc{}) {
                return aValue;
            }
        }
        std::cerr << std::format("Unable to find value with regex: '{}'\n", iKeyValueRegex);
        return 0;
    }

    Token mToken;
    std::string mAuthorizationHeader; //<! Bearer authorization string for OAuth 2.0 header

    friend class HearthstoneApiMock;
};