#include "request_delegate.hpp"
#include "http_client.hpp"
#include "factory.hpp"
#include <json.hpp>

namespace acs
{
    void request_delegate::response_handler(const std::string& response_body) const
    {
        if (response_body == "") {
            callback_({ {}, {} });
            return;
        }
        boost_helper::json response(response_body);
        if (!response.has("err")) {
            std::cerr << "Bad response. " << response_body << std::endl;
            callback_({ {}, {} });
            return;
        }
        if (response["err"].val() != "0") {
            std::cerr << "Server responded with error " <<
                response["err"].val() << response["data"].val() << std::endl;
            callback_({ {}, {} });
            return;
        }
        callback_({ response["data"]["token"].val(), response["data"]["stunum"].val() });
    }

    void request_delegate::execute(const callback_t& callback)
    {
        callback_ = callback;
        // Unfortunately we can't DI client here.
        // There's a bug in lower versions of Boost.Beast,
        // resulting flat_buffer instance not being cleared properly.
        delete client_;
        client_ = new http_client;
        client_->async_get(host, query, boost::bind(
            &request_delegate::response_handler, this, _1));
    }
}