#ifndef CONVERTER_H
#define CONVERTER_H

#include <memory>
#include <cstddef>
#include <string>
#include <vector>

class Converter {
public:
  explicit Converter (std::string input_file_name);
  virtual ~Converter();

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

  virtual bool save (const std::string &output_file_name) = 0;
  [[nodiscard]] int error_code() const noexcept;

protected:
  bool parse();
  void set_error_code (int error_code) noexcept;

  [[nodiscard]] const std::vector<std::string> &titles() const noexcept;
  [[nodiscard]] std::size_t quote_count (const std::string &title) const;
  [[nodiscard]] const std::string &quote_meta (const std::string &title,
                                               std::size_t index) const;
  [[nodiscard]] const std::vector<std::string> &quote_text_lines (
    const std::string &title,
    std::size_t index) const;

private:
  struct Impl;

  std::string input_file_name_;
  std::unique_ptr<Impl> impl_;
  int error_code_ = 0;
};

#endif // CONVERTER_H