#include <WiFi.h> 
#include <esp_now.h> 
#include <JQ6500_Serial.h> 

#define NODE_2 2
#define RX_PIN D7
#define TX_PIN D6

uint8_t macNode1[] = {0x58, 0xE6, 0xC5, 0x19, 0xAD, 0xC8};

HardwareSerial mp3Serial(1);
JQ6500_Serial mp3(mp3Serial);

// Match struct from master
typedef struct {
  int targetID;
  int command;
} Message;

void OnDataRecv(const esp_now_recv_info_t *info,
                const uint8_t *incomingData,
                int len) {

  Serial.println("Packet received");

  Message msg;
  memcpy(&msg, incomingData, sizeof(msg));

  // Only respond if meant for Node 2
  if (msg.targetID != NODE_2) return;

  Serial.println("Playing track 4");

  mp3.playFileByIndexNumber(1);
}

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

  // --- MP3 INIT (KEEP EXACT) ---
  mp3Serial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN);
  delay(3000);

  mp3.reset();
  delay(1000);

  mp3.setSource(MP3_SRC_BUILTIN);
  delay(500);

  mp3.setVolume(25);
  delay(500);

  Serial.println("MP3 Ready");

  // --- ESP-NOW ---
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();

  if (esp_now_init() != ESP_OK) {
    Serial.println("ESP-NOW init failed");
    return;
  }

  esp_now_peer_info_t peer = {};
  memcpy(peer.peer_addr, macNode1, 6);
  peer.channel = 0;
  peer.encrypt = false;
  esp_now_add_peer(&peer);

  esp_now_register_recv_cb(OnDataRecv);

  Serial.println("Node 2 ready");
}

void loop() {}