#include <SD.h>
#include <TMRpcm.h>

// Define the pins for the buttons and SD card module
const int buttonPins[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, A0, A1, A2, A3};
const int numButtons = 16;

// Define the file names for recorded audio
const char* audioFiles[] = {"audio1.wav", "audio2.wav", /* Add more file names as needed */};

TMRpcm tmrpcm; // Create an instance of the TMRpcm library

void setup() {
  Serial.begin(9600);

  // Initialize SD card
  if (!SD.begin(10)) {
    Serial.println("SD card initialization failed!");
    return;
  }

  // Set up the audio module
  tmrpcm.speakerPin = 9; // Change to the pin connected to your speaker module
  tmrpcm.setVolume(5);   // Adjust the volume if needed

  // Set up button pins
  for (int i = 0; i < numButtons; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
}

void loop() {
  // Check each button for a press
  for (int i = 0; i < numButtons; i++) {
    if (digitalRead(buttonPins[i]) == LOW) {
      playAudio(i);
      delay(500); // Debounce delay
    }
  }
}

void playAudio(int buttonIndex) {
  if (buttonIndex < sizeof(audioFiles) / sizeof(audioFiles[0])) {
    Serial.print("Playing: ");
    Serial.println(audioFiles[buttonIndex]);
    tmrpcm.play(audioFiles[buttonIndex]);
    while (tmrpcm.isPlaying()) {
      delay(100);
    }
  } else {
    Serial.println("Invalid button index");
  }
}