#include "Base64.h"

byte myFile[] = "The quick brown fox jumps over the lazy dog!";



void setup() {
  Serial.begin(115200);
  while (!Serial) yield();

  size_t inputLength = strlen(myFile);  // when using a file, get file size
  size_t encodedLength = base64_enc_len(inputLength);   // calculate the full buffer we need
  char encoded[encodedLength];

  size_t inputPos = 0;
  size_t outputPos = 0;
  size_t chunkSize = 6; // needs to be a multiple of 3 bytes
  byte chunk[chunkSize];
  size_t encodedChunkSize = base64_enc_len(chunkSize);
  char encodedChunk[encodedChunkSize];

  while (inputPos < inputLength) {
    if (inputPos + chunkSize < inputLength ) {
      memcpy(chunk, myFile + inputPos, chunkSize);               // read chunkSize into our buffer
      base64_encode(encodedChunk, chunk, chunkSize);        // encode that buffer
      memcpy(encoded + outputPos, encodedChunk, encodedChunkSize); // concat the output for that chunk
      outputPos += encodedChunkSize;
      inputPos += chunkSize;
    } else {
      size_t remainingSize =  inputLength - inputPos;
      size_t encodedRemainingSize = base64_enc_len(remainingSize);
      memcpy(chunk, myFile + inputPos, remainingSize);            // read the rest of the file into our buffer
      base64_encode(encodedChunk, chunk, remainingSize);        // encode that buffer
      memcpy(encoded + outputPos, encodedChunk, encodedRemainingSize); // concat the output for that chunk
      break;
    }
  }

  // dump the base64 output in HEX
  Serial.println("ENCODED");

  for (size_t i = 0; i < encodedLength; i++) {
    Serial.write(encoded[i]); // it's supposed to be ascii
  }
  Serial.println();
}


void loop() {}