#pragma once

#include <Arduino.h>
#include <vector>

class Library {
 public:
  bool loadLastOrFirst(String& path, String& contents) const;
  bool load(const String& path, String& contents) const;
  bool loadSidecar(const String& chapterPath, std::vector<uint8_t>& bytes) const;
  bool selectBook(const String& currentPath, int direction, String& chapterPath) const;
  bool selectChapter(const String& currentPath, int direction, String& chapterPath) const;
  bool previousChapter(const String& currentPath, String& chapterPath) const;
  bool nextChapter(const String& currentPath, String& chapterPath) const;
  String bookName(const String& chapterPath) const;
  String chapterName(const String& chapterPath) const;

 private:
  bool ensureBooks() const;
  bool ensureChapters(const String& directoryPath) const;
  bool isListedChapter(const String& chapterPath) const;
  bool firstChapter(const String& directoryPath, String& chapterPath) const;
  bool loadFile(const String& path, String& contents) const;
  bool firstBook(String& path) const;

  mutable bool booksCached_ = false;
  mutable std::vector<String> books_;
  mutable std::vector<String> firstChapters_;
  mutable String chapterDirectory_;
  mutable std::vector<String> chapters_;
  mutable std::vector<String> chapterTitles_;
};