sillycode

#include <SPI.h>
#include <MFRC522.h>
#include <SoftwareSerial.h>
#include <DFRobotDFPlayerMini.h>

// --- Pin setup ---
#define RST_PIN 9
#define SS_PIN 10
#define DF_RX 5   // Arduino receives from DFPlayer TX
#define DF_TX 6   // Arduino transmits to DFPlayer RX
#define VOLUME_POT A0 // optional volume control

// --- Track numbers ---
#define TRACK_CAT 1
#define TRACK_STAL 2
#define TRACK_DEFAULT 3

// --- Modules ---
MFRC522 rfid(SS_PIN, RST_PIN);
SoftwareSerial dfSerial(DF_RX, DF_TX);
DFRobotDFPlayerMini player;

// --- Variables ---
bool isPlaying = false;
bool jukeboxEnabled = true;   // toggle this to false to disable RFID scanning

void setup() {
  Serial.begin(9600);
  SPI.begin();
  rfid.PCD_Init();

  dfSerial.begin(9600);
  if (!player.begin(dfSerial)) {
    Serial.println("⚠️ DFPlayer not found!");
    while (true);
  }

  player.volume(20);
  Serial.println("🎵 Jukebox Ready — scan a disc!");
}

void loop() {
  if (!jukeboxEnabled) return;  // skip all if disabled

  // --- RFID detection ---
  if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial()) {
    if (isPlaying) {
      player.stop();
      isPlaying = false;
      Serial.println("🛑 Disc removed.");
    }
    return;
  }

  // --- Handle new tag ---
  if (!isPlaying) {
    unsigned long tagID = 0;
    for (byte i = 0; i < rfid.uid.size; i++) {
      tagID = (tagID << 8) | rfid.uid.uidByte[i];
    }

    Serial.print("💽 Detected Tag: ");
    Serial.println(tagID);

    if (tagID == 4150795908) {
      player.play(TRACK_CAT);
      Serial.println("▶️ Playing: Cat");
      delay(185000);
    } 
    else if (tagID == 4156658564) {
      player.play(TRACK_STAL);
      Serial.println("▶️ Playing: Stal");
      delay(151000);
    } 
    else {
      player.play(TRACK_DEFAULT);
      Serial.println("▶️ Playing: Default Track");
      delay(96000);
    }

    isPlaying = true;
  }

  // --- Optional volume pot ---
  int potValue = analogRead(VOLUME_POT);
  int volume = map(potValue, 0, 1023, 0, 30);
  player.volume(volume*3);
}