// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// The MIT License (MIT)
//
// Copyright (c) 2018 www.open3d.org
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
// ----------------------------------------------------------------------------

#include "Open3DViewer.h"

#include <string>

#include "Open3D/GUI/Native.h"
#include "Open3D/Open3D.h"
#include "Open3D/Visualization/Visualizer/GuiVisualizer.h"

using namespace open3d;
using namespace open3d::geometry;
using namespace open3d::visualization;

namespace {
static const std::string gUsage = "Usage: Open3DViewer [meshfile|pointcloud]";
}  // namespace

bool LoadAndCreateWindow(const char *path) {
    static int x = 50, y = 50;

    bool loaded = false;
    bool is_path_valid = (path && path[0] != '\0');
    std::vector<std::shared_ptr<const Geometry>> empty;
    std::string title = "Open3D";
    if (is_path_valid) {
        title += " - ";
        title += path;
    }
    auto vis =
            std::make_shared<GuiVisualizer>(empty, title, WIDTH, HEIGHT, x, y);
    x += 20;  // so next window (if any) doesn't hide this one
    y += 20;
    if (is_path_valid) {
        loaded = vis->LoadGeometry(path);
    }
    gui::Application::GetInstance().AddWindow(vis);  // add even if failed

    // NOTE: gui::ShowNativeAlert crashes on Linux because ShowNativeAlert uses
    // Application::ShowMessageBox but app isn't running yet. Errors will have
    // been output to console and the typical Linux user will know to check
    // console when the window shows up empty.
#if defined(__APPLE__) || defined(_WIN32)
    if (!loaded && is_path_valid) {
        auto err = std::string("Error reading geometry file '") + path + "'";
        gui::ShowNativeAlert(err.c_str());
    }
#endif

    return loaded;
}

int Run(int argc, const char *argv[]) {
    const char *path = nullptr;
    if (argc > 1) {
        path = argv[1];
        if (argc > 2) {
            utility::LogWarning(gUsage.c_str());
        }
    }

    auto &app = gui::Application::GetInstance();
    app.Initialize(argc, argv);

    LoadAndCreateWindow(path);

    app.Run();

    return 0;
}

#if __APPLE__
// Open3DViewer_mac.mm
#else
int main(int argc, const char *argv[]) { return Run(argc, argv); }
#endif  // __APPLE__