#include "Arduino.h"
#include "Audio.h"
#include "SD.h"
#include "SPI.h"

// ── SD Card (matches Seeed Studio XIAO ESP32-S3 Sense example) ──
#define SD_CS    21
#define SPI_MOSI 9
#define SPI_MISO 8
#define SPI_SCK  7

// ── I2S Pins → MAX98357A ──
#define I2S_DOUT  D7   // DIN on MAX98357A
#define I2S_BCLK  D6   // BCLK
#define I2S_LRC   D1    // LRC (WS)
#define AMP_SD    D0

Audio audio;

void setup() {
  Serial.begin(115200);

  // Init SPI for SD card (same as Seeed example)
  SPI.begin(SPI_SCK, SPI_MISO, SPI_MOSI, SD_CS);
  if (!SD.begin(SD_CS)) {
    Serial.println("SD Card mount failed!");
    return;
  }
  Serial.println("SD Card mounted.");

    // Keep amplifier enabled
  pinMode(AMP_SD, OUTPUT);
  digitalWrite(AMP_SD, HIGH);

  // Setup I2S output to MAX98357A
  audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT);
  audio.setVolume(21); // 0–21

  // Play the file already on your SD card
  audio.connecttoFS(SD, "/001.mp3");
  Serial.println("Playing 001.mp3...");
}

void loop() {
  audio.loop();
}

// Optional debug callbacks
void audio_info(const char *info)    { Serial.println(info); }
void audio_eof_mp3(const char *info) { Serial.println("Finished playing."); }