#pragma once

#include <daguerre/image.hpp>
#include "window.hpp"
#include <mutex>
#include <list>

class renderer {

  daguerre::image<daguerre::hilbert_color> framebuffer;
  daguerre::image<daguerre::hilbert_color> double_buffer;

  daguerre::image<daguerre::hilbert_color> background;
  daguerre::image<daguerre::hilbert_color> cursor;
  daguerre::hilbert_color cursor_background;

  int cursor_x;
  int cursor_y;

  //bottom to top
  std::list<const window *> windows;

  std::mutex mut;

  euler::syscall::stream_handle
    dispatcher_handle_1, dispatcher_handle_2;

  void do_render();

public:
  renderer(
    daguerre::image<daguerre::hilbert_color> &&framebuffer,
    daguerre::image<daguerre::hilbert_color> &&background,
    daguerre::hilbert_color background_color,
    daguerre::image<daguerre::hilbert_color> &&cursor,
    daguerre::hilbert_color cursor_background);

  inline ~renderer() {
    euler::syscall::close_stream(dispatcher_handle_1);
    euler::syscall::close_stream(dispatcher_handle_2);
  }

  renderer(const renderer &) = delete;
  renderer &operator =(const renderer &) = delete;

  [[noreturn]] void render_thread_main();

  inline void lock()   { mut.lock();   }
  inline void unlock() { mut.unlock(); }

  inline void dispatch_render() {
    uint8_t byte = 0;
    euler::syscall::write_to_stream(dispatcher_handle_1, 1, &byte);
  }

  void bump_cursor(int x_offset, int y_offset);

  void add_window(const window *w);
  void remove_window(const window *w);

};