/****************************************************************************************************************************
  cencoder.h - c source to a base64 decoding algorithm implementation

  For any WiFi shields, such as WiFiNINA W101, W102, W13x, or custom, such as ESP8266/ESP32-AT, Ethernet, etc

  WiFiWebServer is a library for the ESP32-based WiFi shields to run WebServer
  Forked and modified from ESP8266 https://github.com/esp8266/Arduino/releases
  Forked and modified from Arduino WiFiNINA library https://www.arduino.cc/en/Reference/WiFiNINA
  Built by Khoi Hoang https://github.com/khoih-prog/WiFiWebServer
  Licensed under MIT license

  Original author:
  @file       Esp8266WebServer.h
  @author     Ivan Grokhotkov
 *****************************************************************************************************************************/

#pragma once

// Reintroduce to prevent duplication compile error if other lib/core already has LIB64
// pragma once can't prevent that
#ifndef BASE64_CENCODE_H
#define BASE64_CENCODE_H

#define base64_encode_expected_len(n) ((((4 * n) / 3) + 3) & ~3)

#ifdef __cplusplus
extern "C" {
#endif

typedef enum
{
  step_A, step_B, step_C
} base64_encodestep;

typedef struct
{
  base64_encodestep step;
  char result;
  int stepcount;
} base64_encodestate;

void base64_init_encodestate(base64_encodestate* state_in);

char base64_encode_value(char value_in);

int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in);

int base64_encode_blockend(char* code_out, base64_encodestate* state_in);

int base64_encode_chars(const char* plaintext_in, int length_in, char* code_out);

#ifdef __cplusplus
} // extern "C"
#endif

#endif /* BASE64_CENCODE_H */