#include "info/info.h"

typedef void (*shutdown_display_handlerFunc)(void);
typedef void (*restart_display_handlerFunc)(void);

class DisplayHandler {
public:
  DisplayHandler(QueueHandle_t touch_queue, SemaphoreHandle_t lvgl_mutex);
  // the system_event_group is used to set display-ready bit
  virtual void init(EventGroupHandle_t system_event_group) = 0;
  virtual void start_event_loop() = 0;
  // get a handler to perform display shutdown cleanup, this is called after event loop ends and DisplayHandler is deleted
  virtual shutdown_display_handlerFunc get_shutdown_display_handler() = 0;
  virtual restart_display_handlerFunc get_restart_display_handler() = 0;
  virtual ~DisplayHandler() = 0;

private:
  DisplayHandler(const DisplayHandler&) = delete;
  DisplayHandler& operator=(const DisplayHandler&) = delete;
};

class EInkDisplayHandler : public DisplayHandler {
public:
  EInkDisplayHandler(QueueHandle_t touch_queue, SemaphoreHandle_t lvgl_mutex);
  void init(EventGroupHandle_t system_event_group) override;
  void start_event_loop() override;
  shutdown_display_handlerFunc get_shutdown_display_handler() override;
  restart_display_handlerFunc get_restart_display_handler() override;
  ~EInkDisplayHandler() override;

private:
  // Task adapter used for FreeRTOS task creation. It forwards to the
  // instance `run_event_loop()` method using the `this` pointer passed
  // as the task parameter.
  static void task_adapter(void* arg);

  // Instance method that implements the display task loop.
  void run_event_loop();
  // prevent copying
  EInkDisplayHandler(const EInkDisplayHandler&) = delete;
  EInkDisplayHandler& operator=(const EInkDisplayHandler&) = delete;
};