#pragma once

#include "api.h"

#ifdef __cplusplus
extern "C" {
#endif

/*!
 * \file
 */

/*!
 * \brief curve25519_initialize initilalize curve25519 library
 */
extern void curve25519_initialize(void);

/*!
 * \brief curve25519_create_keypair
 * \return A curve25519 keypair.
 */
extern struct KeyPair curve25519_create_keypair(void);

/*!
 * \brief curve25519_keypair_deleter
 * \param p The keypair to free.
 */
extern void curve25519_keypair_deleter(struct KeyPair* p);

/*!
 * \brief curve25519_get_pubkey_array
 * \param pubkey
 * \param buffer
 * \param len
 */
extern void curve25519_key_to_array(unsigned char** buffer, size_t* len, void* pubkey);

/*!
 * \brief curve25519_add_public_share
 * \param buffer
 * \param out_len
 * \param share
 * \param pubkey
 */
extern void curve25519_add_public_share(char** buffer, size_t* out_len, char const* share, size_t in_len, void* pubkey);

/*!
 * \brief curve25519_derive_shared_key
 * \param pair Our keypair.
 * \param pub_key The public key of the other party.
 * \param swap_pub_order Should we swap the order in which we feed the public keys to the hash function.
 * \return A Shared key
 */
extern struct SharedKey curve25519_derive_shared_key(struct KeyPair pair, unsigned char const* other_pub, size_t pub_len, unsigned char const* value, size_t value_len, void* priv_value, bool swap_pub_order);
/*!
 * \brief curve25519_shared_key_deleter
 * \param s the Shared key to free.
 */
extern void curve25519_shared_key_deleter(struct SharedKey* s);

extern void curve25519_deinitialize(void);

/*!
 * \brief get_curve25519_implementation
 * \return An Api struct filled with a curve25519 implementation.
 */
struct Api get_curve25519_implementation();

#ifdef __cplusplus
}
#endif