// Display images inside a terminal
// Copyright (C) 2023  JustKidding
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#ifndef WAYLAND_EGL_WINDOW_H
#define WAYLAND_EGL_WINDOW_H

#include "../config.hpp"
#include "image.hpp"
#include "util/egl.hpp"
#include "wayland-xdg-shell-client-protocol.h"
#include "waylandwindow.hpp"

#include <wayland-client.h>
#include <wayland-egl.h>

#include <memory>
#include <mutex>

class WaylandEglWindow : public WaylandWindow
{
  public:
    WaylandEglWindow(struct wl_compositor *compositor, struct xdg_wm_base *xdg_base,
                     const EGLUtil<struct wl_display, struct wl_egl_window> *egl, std::unique_ptr<Image> new_image,
                     WaylandConfig *new_config, struct XdgStructAgg *xdg_agg);
    ~WaylandEglWindow() override;
    static void xdg_surface_configure(void *data, struct xdg_surface *xdg_surface, uint32_t serial);
    static void wl_surface_frame_done(void *data, struct wl_callback *callback, uint32_t time);

    void draw() override;
    void generate_frame() override;
    void show() override;
    void hide() override;

    void finish_init() override;

  private:
    struct wl_compositor *compositor;
    struct xdg_wm_base *xdg_base;

    struct wl_surface *surface = nullptr;
    struct xdg_surface *xdg_surface = nullptr;
    struct xdg_toplevel *xdg_toplevel = nullptr;
    struct wl_callback *callback;

    std::unique_ptr<Image> image;
    WaylandConfig *config;

    EGLSurface egl_surface;
    EGLContext egl_context;

    struct wl_egl_window *egl_window = nullptr;
    const EGLUtil<struct wl_display, struct wl_egl_window> *egl;

    GLuint texture;
    GLuint fbo;

    std::mutex draw_mutex;
    std::mutex egl_mutex;

    std::string appid;
    void *this_ptr;
    struct XdgStructAgg *xdg_agg;
    bool visible = false;

    void move_window();
    void delete_wayland_structs();
    void delete_xdg_structs();

    void opengl_cleanup();
    void xdg_setup();
    void setup_listeners();
    void opengl_setup();
    void load_framebuffer();
};
#endif