#ifndef REGISTRATION_API_H
#define REGISTRATION_API_H

#ifdef REGISTRATION_EXPORTS
#define REGISTRATION_API __declspec(dllexport)
#else
#define REGISTRATION_API __declspec(dllimport)
#endif

#include <string>

#ifdef __cplusplus
extern "C" {
#endif
    // --- Core Functions ---

    // Gets the raw machine code.
    REGISTRATION_API const char* GetMachineCode();

    // Validates the license file.
    // @return: 0=success, 1=failure, 2=expired.
    REGISTRATION_API int ValidateLicenseFile();

    // Generates a license file from a provided machine code.
    // @param machine_code: The machine code to use.
    // @param expiration_date: A date string in "YYYY-MM-DD" format.
    // @return: 0=success, 1=failure.
    REGISTRATION_API int GenerateLicenseFileFromCode(const char* machine_code, const char* expiration_date);

    // --- New Encryption/Decryption API ---

    // Generates a dynamic, 32-character encrypted code from the machine code.
    // The returned string is managed by the DLL and should not be freed by the caller.
    REGISTRATION_API const char* GenerateEncryptedCode();

    // Decrypts a 32-character code to get the original machine code.
    // @param encrypted_code: The 32-character hex string to decrypt.
    // @param decrypted_machine_code: A buffer to store the null-terminated result.
    // @param buffer_size: The size of the provided buffer.
    // @return: 0 on success, 1 on failure (e.g., invalid format, bad length).
    REGISTRATION_API int DecryptCodeAndGetMachineCode(const char* encrypted_code, char* decrypted_machine_code, int buffer_size);


#ifdef __cplusplus
}
#endif

#endif // REGISTRATION_API_H