/**
 * XtcReaderActivity.h
 *
 * XTC ebook reader activity for CrossPoint Reader
 * Displays pre-rendered XTC pages on e-ink display
 */

#pragma once

#include <Xtc.h>
#include <freertos/FreeRTOS.h>
#include <freertos/semphr.h>
#include <freertos/task.h>

#include "activities/Activity.h"

class XtcReaderActivity final : public Activity {
  std::shared_ptr<Xtc> xtc;
  TaskHandle_t displayTaskHandle = nullptr;
  SemaphoreHandle_t renderingMutex = nullptr;
  uint32_t currentPage = 0;
  int pagesUntilFullRefresh = 0;
  bool updateRequired = false;
  const std::function<void()> onGoBack;
  const std::function<void()> onGoHome;

  static void taskTrampoline(void* param);
  [[noreturn]] void displayTaskLoop();
  void renderScreen();
  void renderPage();
  void saveProgress() const;
  void loadProgress();

 public:
  explicit XtcReaderActivity(GfxRenderer& renderer, MappedInputManager& mappedInput, std::unique_ptr<Xtc> xtc,
                             const std::function<void()>& onGoBack, const std::function<void()>& onGoHome)
      : Activity("XtcReader", renderer, mappedInput), xtc(std::move(xtc)), onGoBack(onGoBack), onGoHome(onGoHome) {}
  void onEnter() override;
  void onExit() override;
  void loop() override;
};