#ifdef WIN32
    // Why?
    #define _WIN32_WINNT 0x0502
    // The standard Windows includes.
    #define WIN32_LEAN_AND_MEAN
    #define NOMINMAX
    #include <Windows.h>
    #include <wchar.h>
    // Let the NVIDIA and AMD know we want to use their graphics card
    // on a dual graphics card system.
    __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
    __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
#endif /* WIN32 */

#include <cstdio>
#include <string>
#include <cstring>
#include <iostream>
#include <math.h>
#include <boost/filesystem.hpp>
#include <boost/nowide/args.hpp>
#include <boost/nowide/cenv.hpp>
#include <boost/nowide/iostream.hpp>

#include "unix/fhs.hpp"  // Generated by CMake from ../platform/unix/fhs.hpp.in

#include "libslic3r/libslic3r.h"
#include "libslic3r/Config.hpp"
#include "libslic3r/Geometry.hpp"
#include "libslic3r/Model.hpp"
#include "libslic3r/Print.hpp"
#include "libslic3r/SLAPrint.hpp"
#include "libslic3r/TriangleMesh.hpp"
#include "libslic3r/Format/3mf.hpp"
#include "libslic3r/Utils.hpp"

#include "slic3r/GUI/GUI.hpp"
#include "slic3r/GUI/GUI_App.hpp"

using namespace Slic3r;

/// utility function for displaying CLI usage
void printUsage();

#ifdef _MSC_VER
int slic3r_main_(int argc, char **argv)
#else
int main(int argc, char **argv)
#endif
{
    {
        const char *loglevel = boost::nowide::getenv("SLIC3R_LOGLEVEL");
        if (loglevel != nullptr) {
            if (loglevel[0] >= '0' && loglevel[0] <= '9' && loglevel[1] == 0)
                set_logging_level(loglevel[0] - '0');
            else
                boost::nowide::cerr << "Invalid SLIC3R_LOGLEVEL environment variable: " << loglevel << std::endl;
        }
    }

    // parse all command line options into a DynamicConfig
    DynamicPrintAndCLIConfig all_config;
    t_config_option_keys input_files;
    // if any option is unsupported, print usage and abort immediately
    if (! all_config.read_cli(argc, argv, &input_files)) {
        printUsage();
        return 0;
    }

    boost::filesystem::path path_to_binary = boost::filesystem::system_complete(argv[0]);

    // Path from the Slic3r binary to its resources.
#ifdef __APPLE__
    // The application is packed in the .dmg archive as 'Slic3r.app/Contents/MacOS/Slic3r'
    // The resources are packed to 'Slic3r.app/Contents/Resources'
    boost::filesystem::path path_resources = path_to_binary.parent_path() / "../Resources";
#elif defined _WIN32
    // The application is packed in the .zip archive in the root,
    // The resources are packed to 'resources'
    // Path from Slic3r binary to resources:
    boost::filesystem::path path_resources = path_to_binary.parent_path() / "resources";
#elif defined SLIC3R_FHS
    // The application is packaged according to the Linux Filesystem Hierarchy Standard
    // Resources are set to the 'Architecture-independent (shared) data', typically /usr/share or /usr/local/share
    boost::filesystem::path path_resources = SLIC3R_FHS_RESOURCES;
#else
    // The application is packed in the .tar.bz archive (or in AppImage) as 'bin/slic3r',
    // The resources are packed to 'resources'
    // Path from Slic3r binary to resources:
    boost::filesystem::path path_resources = path_to_binary.parent_path() / "../resources";
#endif

    set_resources_dir(path_resources.string());
    set_var_dir((path_resources / "icons").string());
    set_local_dir((path_resources / "localization").string());

    // apply command line options to a more handy CLIConfig
    CLIConfig cli_config;
    cli_config.apply(all_config, true);
    set_data_dir(cli_config.datadir.value);

    // Load the extra config values.
    DynamicPrintConfig extra_config;
    extra_config.apply(all_config, true);

    // load config files supplied via --load
    DynamicPrintConfig print_config;
    for (const std::string &file : cli_config.load.values) {
        if (! boost::filesystem::exists(file)) {
            boost::nowide::cout << "No such file: " << file << std::endl;
            exit(1);
        }
        DynamicPrintConfig c;
        try {
            c.load(file);
        } catch (std::exception &e) {
            boost::nowide::cout << "Error while reading config file: " << e.what() << std::endl;
            exit(1);
        }
        c.normalize();
        print_config.apply(c);
    }

    if ((argc == 1 || cli_config.gui.value) && ! cli_config.no_gui.value && ! cli_config.help.value && cli_config.save.value.empty()) {
#if 1
        GUI::GUI_App *gui = new GUI::GUI_App();
        GUI::GUI_App::SetInstance(gui);
        gui->CallAfter([gui, &input_files, &cli_config, &extra_config, &print_config] {
#if 0
            // Load the cummulative config over the currently active profiles.
            //FIXME if multiple configs are loaded, only the last one will have an effect.
            // We need to decide what to do about loading of separate presets (just print preset, just filament preset etc).
            // As of now only the full configs are supported here.
            if (! print_config.empty())
                gui->mainframe->load_config(print_config);
#endif
            if (! cli_config.load.values.empty())
                // Load the last config to give it a name at the UI. The name of the preset may be later
                // changed by loading an AMF or 3MF.
                //FIXME this is not strictly correct, as one may pass a print/filament/printer profile here instead of a full config.
				gui->mainframe->load_config_file(cli_config.load.values.back());
            // If loading a 3MF file, the config is loaded from the last one.
            gui->plater()->load_files(input_files, true, true);
            if (! extra_config.empty())
                gui->mainframe->load_config(extra_config);
        });
        return wxEntry(argc, argv);
#else
        std::cout << "GUI support has not been built." << "\n";
		return -1;
#endif
    }

    // apply command line options to a more specific DynamicPrintConfig which provides normalize()
    // (command line options override --load files)
    print_config.apply(extra_config, true);
    
    // write config if requested
    if (! cli_config.save.value.empty()) {
        print_config.normalize();
        print_config.save(cli_config.save.value);
    }

    if (cli_config.help) {
        printUsage();
        return 0;
    }

    // read input file(s) if any
    std::vector<Model> models;
    for (const t_config_option_key &file : input_files) {
        if (! boost::filesystem::exists(file)) {
            boost::nowide::cerr << "No such file: " << file << std::endl;
            exit(1);
        }
        Model model;
        try {
            model = Model::read_from_file(file, &print_config, true);
        } catch (std::exception &e) {
            boost::nowide::cerr << file << ": " << e.what() << std::endl;
            exit(1);
        }
        if (model.objects.empty()) {
            boost::nowide::cerr << "Error: file is empty: " << file << std::endl;
            continue;
        }
        model.add_default_instances();        
        // apply command line transform options
        for (ModelObject* o : model.objects) {
/*
            if (cli_config.scale_to_fit.is_positive_volume())
                o->scale_to_fit(cli_config.scale_to_fit.value);
*/
            // TODO: honor option order?
            o->scale(cli_config.scale.value);
            o->rotate(Geometry::deg2rad(cli_config.rotate_x.value), X);
            o->rotate(Geometry::deg2rad(cli_config.rotate_y.value), Y);
            o->rotate(Geometry::deg2rad(cli_config.rotate.value), Z);
        }
        // TODO: handle --merge
        models.push_back(model);
    }

    for (Model &model : models) {
        if (cli_config.info) {
            // --info works on unrepaired model
            model.print_info();
        } else if (cli_config.export_3mf) {
            std::string outfile = cli_config.output.value;
            if (outfile.empty()) outfile = model.objects.front()->input_file;
            // Check if the file is already a 3mf.
            if(outfile.substr(outfile.find_last_of('.'), outfile.length()) == ".3mf")
                outfile = outfile.substr(0, outfile.find_last_of('.')) + "_2" + ".3mf";
            else
                // Remove the previous extension and add .3mf extention.
                outfile = outfile.substr(0, outfile.find_last_of('.')) + ".3mf";
            store_3mf(outfile.c_str(), &model, nullptr);
            boost::nowide::cout << "File file exported to " << outfile << std::endl;
        } else if (cli_config.cut > 0) {
            model.repair();
            model.translate(0, 0, - model.bounding_box().min(2));
            if (! model.objects.empty()) {
                // XXX
                // Model out;
                // model.objects.front()->cut(cli_config.cut, &out);
                // ModelObject &upper = *out.objects[0];
                // ModelObject &lower = *out.objects[1];
                // // Use the input name and trim off the extension.
                // std::string outfile = cli_config.output.value;
                // if (outfile.empty())
                //     outfile = model.objects.front()->input_file;
                // outfile = outfile.substr(0, outfile.find_last_of('.'));
                // std::cerr << outfile << "\n";
                // if (upper.facets_count() > 0)
                //     upper.mesh().write_binary((outfile + "_upper.stl").c_str());
                // if (lower.facets_count() > 0)
                //     lower.mesh().write_binary((outfile + "_lower.stl").c_str());
            }
        } else if (cli_config.slice) {
            PrinterTechnology printer_technology = print_config.option<ConfigOptionEnum<PrinterTechnology>>("printer_technology", true)->value;
            std::string outfile = cli_config.output.value;
            Print       fff_print;
            SLAPrint    sla_print;
            PrintBase  *print = (printer_technology == ptFFF) ? static_cast<PrintBase*>(&fff_print) : static_cast<PrintBase*>(&sla_print);
            if (! cli_config.dont_arrange) {
                //FIXME make the min_object_distance configurable.
                model.arrange_objects(fff_print.config().min_object_distance());
                model.center_instances_around_point(cli_config.print_center);
            }
            if (outfile.empty()) {
                outfile = model.propose_export_file_name();
                outfile += (printer_technology == ptFFF) ? ".gcode" : ".zip";
            }
            if (printer_technology == ptFFF) {
                for (auto* mo : model.objects)
                    fff_print.auto_assign_extruders(mo);
            }
            print_config.normalize();
            print->apply(model, print_config);
            std::string err = print->validate();
            if (err.empty()) {
                if (printer_technology == ptFFF) {
                    fff_print.export_gcode(outfile, nullptr);
                } else {
                    assert(printer_technology == ptSLA);
					//FIXME add the output here
                }
            } else
                std::cerr << err << "\n";
        } else {
            boost::nowide::cerr << "error: command not supported" << std::endl;
            return 1;
        }
    }
    
    return 0;
}

void printUsage()
{
    std::cout << "Slic3r " << SLIC3R_VERSION << " is a STL-to-GCODE translator for RepRap 3D printers" << "\n"
              << "written by Alessandro Ranellucci <aar@cpan.org> - http://slic3r.org/ - https://github.com/slic3r/Slic3r" << "\n"
//              << "Git Version " << BUILD_COMMIT << "\n\n"
              << "Usage: ./slic3r [ OPTIONS ] [ file.stl ] [ file2.stl ] ..." << "\n";
    // CLI Options
    std::cout << "** CLI OPTIONS **\n";
    print_cli_options(boost::nowide::cout);
    std::cout << "****\n";
        // Print options
        std::cout << "** PRINT OPTIONS **\n";
    print_print_options(boost::nowide::cout);
    std::cout << "****\n";
}

#ifdef _MSC_VER
extern "C" {
	__declspec(dllexport) int __stdcall slic3r_main(int argc, wchar_t **argv)
	{
		// Convert wchar_t arguments to UTF8.
		std::vector<std::string> 	argv_narrow;
		std::vector<char*>			argv_ptrs(argc + 1, nullptr);
		for (size_t i = 0; i < argc; ++ i)
			argv_narrow.emplace_back(boost::nowide::narrow(argv[i]));
		for (size_t i = 0; i < argc; ++ i)
			argv_ptrs[i] = const_cast<char*>(argv_narrow[i].data());
		// Call the UTF8 main.
		return slic3r_main_(argc, argv_ptrs.data());
	}
}
#endif /* _MSC_VER */