#ifndef MESHCORE_HEADER
#define MESHCORE_HEADER

#include "packetstructs.h"
#include "string.h"
#include "sx1262.h"
#include "lib/cifra/aes.h"
#include "lib/cifra/sha2.h"
#include "lib/cifra/hmac.h"
#include "lib/base64.h"
#include "util/log.h"
#include <ctype.h>
#include "stdio.h"

// requires at least a 256 byte data
FrameStruct decodeFrame (unsigned char *data, unsigned char dataLen);

#define KEY_SIZE 16  // 128-bit AES
#define HMAC_SIZE 2  // SHA256 output size

int aes_encrypt_ecb (const uint8_t *key, const uint8_t *input, size_t ilen,
                     uint8_t *output);

// AES-ECB decrypt (same as Arduino's aes.decryptBlock)
int aes_decrypt_ecb (const uint8_t *key, const uint8_t *input, size_t ilen,
                     uint8_t *output);

// HMAC-SHA256
int hmac_sha256 (const uint8_t *key, size_t keylen, const uint8_t *input,
                 size_t ilen, uint8_t *output);

// Verify MAC + Decrypt
int mac_then_decrypt (const uint8_t *aes_key, const uint8_t *input, size_t ilen,
                      uint8_t *plaintext);

void hexdump (const char *label, const uint8_t *data, size_t len);

#define AESKeyCount 8

// EncryptedPayloadStruct decodeEncryptedPayload(FrameStruct frame);

GroupTextMessage decodeGroupMessage (FrameStruct frame);

void printGroupMessage (GroupTextMessage msg);

AdvertisementPayload decodeAdvertisement (FrameStruct frame);

void printAdvertisement (AdvertisementPayload advert);

void printFrameHeader (FrameStruct frame);

#define AESKeyCount 8

extern const uint8_t aesKeys[AESKeyCount][17];

void sendFrame (FrameStruct frame);
void sendGroupMessage (GroupTextMessage msg);
void makeSendGroupMessage (char *txt, uint8_t keyIndex);
void sendAdvert();

#endif