#include "OctoPrint.hpp"

#include <iostream>
#include <boost/format.hpp>

#include <wx/frame.h>
#include <wx/event.h>

#include "libslic3r/PrintConfig.hpp"
#include "slic3r/GUI/GUI.hpp"
#include "Http.hpp"


namespace Slic3r {


OctoPrint::OctoPrint(DynamicPrintConfig *config) :
    host(config->opt_string("octoprint_host")),
    apikey(config->opt_string("octoprint_apikey")),
    cafile(config->opt_string("octoprint_cafile"))
{}

std::string  OctoPrint::test() const
{
    // Since the request is performed synchronously here,
    // it is ok to refer to `res` from within the closure
    std::string res;

    auto http = Http::get(std::move(make_url("api/version")));
    set_auth(http);
    http.on_error([&](std::string, std::string error, unsigned status) {
            res = format_error(error, status);
        })
        .perform_sync();

    return res;
}

void OctoPrint::send_gcode(int windowId, int completeEvt, int errorEvt, const std::string &filename, bool print) const
{
    auto http = Http::post(std::move(make_url("api/files/local")));
    set_auth(http);
    http.form_add("print", print ? "true" : "false")
        .form_add_file("file", filename)
        .on_complete([=](std::string body, unsigned status) {
            wxWindow *window = GUI::get_widget_by_id(windowId);
            wxCommandEvent* evt = new wxCommandEvent(completeEvt);
            evt->SetString("G-code file successfully uploaded to the OctoPrint server");
            evt->SetInt(100);
            wxQueueEvent(window, evt);
        })
        .on_error([=](std::string body, std::string error, unsigned status) {
            wxWindow *window = GUI::get_widget_by_id(windowId);

            wxCommandEvent* evt_complete = new wxCommandEvent(completeEvt);
            evt_complete->SetInt(100);
            wxQueueEvent(window, evt_complete);

            wxCommandEvent* evt_error = new wxCommandEvent(errorEvt);
            evt_error->SetString(wxString::Format("Error while uploading to the OctoPrint server: %s", format_error(error, status)));
            wxQueueEvent(window, evt_error);
        })
        .perform();
}

void OctoPrint::set_auth(Http &http) const
{
    http.header("X-Api-Key", apikey);

    if (! cafile.empty()) {
        http.ca_file(cafile);
    }
}

std::string OctoPrint::make_url(const std::string &path) const
{
    if (host.find("http://") == 0 || host.find("https://") == 0) {
        if (host.back() == '/') {
            return std::move((boost::format("%1%%2%") % host % path).str());
        } else {
            return std::move((boost::format("%1%/%2%") % host % path).str());
        }
    } else {
        return std::move((boost::format("http://%1%/%2%") % host % path).str());
    }
}

std::string OctoPrint::format_error(std::string error, unsigned status)
{
    if (status != 0) {
        std::string res{"HTTP "};
        res.append(std::to_string(status));

        if (status == 401) {
            res.append(": Invalid API key");
        }

        return std::move(res);
    } else {
        return std::move(error);
    }
}


}