#ifndef DBC_PARSER_H
#define DBC_PARSER_H

#include <string>
#include <vector>
#include <cstdint>

#include "dbc_database.h"

/**
 * @brief Minimal DBC parser.
 *
 * Supports:
 * - BO_
 * - SG_
 * - CM_ BO_
 * - CM_ SG_
 *
 * Ignores:
 * - attributes
 * - multiplexing
 * - value tables
 */
class DbcParser {
  public:
    /**
     * @brief Parse DBC file.
     * @param filePath Path to input file.
     * @return Parsed database.
     * @throws std::runtime_error on file or parse errors.
     */
    DbcDatabase ParseFile (const std::string &filePath) const;

  private:
    static bool IsFrameLine (const std::string &line);
    static bool IsSignalLine (const std::string &line);
    static bool IsCommentLine (const std::string &line);
    static std::string Trim (const std::string &text);
    static std::vector<std::string> SplitReceivers (const std::string &text);
    static std::uint32_t TryExtractPgn (std::uint32_t canId, bool &hasPgn);

    static FrameInfo ParseFrameLine (const std::string &line);
    static SignalInfo ParseSignalLine (const std::string &line);

    static void ParseCommentLine (const std::string &line, DbcDatabase &database);

    static FrameInfo *FindFrameById (DbcDatabase &database, std::uint32_t canId);
    static SignalInfo *FindSignalByName (FrameInfo &frame, const std::string &signalName);
};

#endif /* DBC_PARSER_H */