#include <SD.h>
#include <SPI.h>
#include <Audio.h>

#define CS_PIN     5  // Chip select pin for SD card
#define BUZZER_PIN 25 // Pin connected to the speaker/buzzer

File root;
AudioFileSourceSD *file;
AudioOutputI2S *output;
AudioFileSourceID3 *id3;

void setup() {
  Serial.begin(115200);
  
  if (!SD.begin(CS_PIN)) {
    Serial.println("SD card initialization failed!");
    while (true);
  }

  Serial.println("SD card initialized.");

  file = new AudioFileSourceSD("/example.wav");
  id3 = new AudioFileSourceID3(file);
  output = new AudioOutputI2S();
  output->SetPinout(26, 22, 25); // BCLK, LRCLK, DATA

  AudioConnection patch(id3, output);
  id3->registerMetadataCB(metadataCB, NULL);

  Serial.println("Playing...");
  id3->seek(0);
}

void loop() {
  // Nothing to do here, playback is handled by the hardware
}

void metadataCB(void *cbData, const char *type, bool isUnicode, const char *string) {
  Serial.print(type);
  Serial.print(": ");
  if (isUnicode) {
    Serial.print((const char *)string);
  } else {
    Serial.print((char *)string);
  }
  Serial.println();
}