Xteink-X4-crosspoint-reader/src/activities/home/HomeActivity.h

#pragma once
#include <freertos/FreeRTOS.h>
#include <freertos/semphr.h>
#include <freertos/task.h>

#include <functional>
#include <string>
#include <vector>

#include "../Activity.h"

// Cached data for a recent book
struct CachedBookInfo {
  std::string path;  // Full path to the book file
  std::string title;
  std::string coverPath;
  int progressPercent = 0;
};

class HomeActivity final : public Activity {
  TaskHandle_t displayTaskHandle = nullptr;
  SemaphoreHandle_t renderingMutex = nullptr;
  int selectorIndex = 0;  // Unified index: 0..bookCount-1 = books, bookCount+ = menu
  bool updateRequired = false;
  bool hasContinueReading = false;
  bool hasOpdsUrl = false;
  bool hasCoverImage = false;
  bool coverRendered = false;      // Track if cover has been rendered once
  bool coverBufferStored = false;  // Track if cover buffer is stored
  uint8_t* coverBuffer = nullptr;  // HomeActivity's own buffer for cover image
  std::string lastBookTitle;
  std::string lastBookAuthor;
  std::string coverBmpPath;
  uint8_t cachedBatteryLevel = 0;
  uint32_t lastBatteryCheck = 0;

  // Cached recent books data (loaded once in onEnter)
  std::vector<CachedBookInfo> cachedRecentBooks;
  const std::function<void()> onContinueReading;
  const std::function<void()> onMyLibraryOpen;
  const std::function<void()> onSettingsOpen;
  const std::function<void()> onFileTransferOpen;
  const std::function<void()> onOpdsBrowserOpen;

  static void taskTrampoline(void* param);
  [[noreturn]] void displayTaskLoop();
  void render();
  int getMenuItemCount() const;
  bool storeCoverBuffer();  // Store frame buffer for cover image

  void freeCoverBuffer();      // Free the stored cover buffer
  void loadRecentBooksData();  // Load and cache recent books data

 public:
  explicit HomeActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
                        const std::function<void()>& onContinueReading, const std::function<void()>& onMyLibraryOpen,
                        const std::function<void()>& onSettingsOpen, const std::function<void()>& onFileTransferOpen,
                        const std::function<void()>& onOpdsBrowserOpen)
      : Activity("Home", renderer, mappedInput),
        onContinueReading(onContinueReading),
        onMyLibraryOpen(onMyLibraryOpen),
        onSettingsOpen(onSettingsOpen),
        onFileTransferOpen(onFileTransferOpen),
        onOpdsBrowserOpen(onOpdsBrowserOpen) {}
  void onEnter() override;
  void onExit() override;
  void loop() override;
};