#ifndef MODULAR_ADAPTER_HPP
#define MODULAR_ADAPTER_HPP

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

/**
 * @brief Parsed command-line arguments.
 */
struct CommandLineArgs {
    std::string config_path;    ///< Path to config file (--config <path>).
    bool show_help = false;     ///< Whether --help was passed.
    bool show_version = false;  ///< Whether --version was passed.
    bool has_errors = false;    ///< Whether there were parsing errors.
    std::string error_msg;      ///< Error message if has_errors is true.
};

/**
 * @brief Adapter for parsing CLI arguments and dispatching commands.
 *
 * Supports:
 *   --config <path>   Load configuration from file
 *   --help            Display help message
 *   --version         Display application version
 */
class CommandLineAdapter {
public:
    /**
     * @brief Construct the adapter with argc/argv.
     * @param argc Argument count (from main).
     * @param argv Argument vector (from main).
     */
    CommandLineAdapter(int argc, char* argv[]);

    /**
     * @brief Parse the stored arguments.
     * @return A CommandLineArgs struct containing parsed values.
     */
    CommandLineArgs parse();

    /**
     * @brief Print the help message to stdout.
     */
    static void printHelp();

    /**
     * @brief Print the version string to stdout.
     */
    static void printVersion();

private:
    int argc_;
    char** argv_;

    /**
     * @brief Get argument at index i, or empty string if out of range.
     */
    std::string argAt(int i) const;
};

#endif // MODULAR_ADAPTER_HPP