#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include "DHT.h"
#include <Wire.h>
#include <BH1750.h>

#define DHTPIN 27
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
BH1750 lightMeter;

AsyncWebServer server(80);
AsyncWebSocket ws("/ws");

const int relayPins[] = {14, 12, 13, 15};

void setup() {
  Serial.begin(115200);
  WiFi.begin("yourSSID", "yourPASSWORD");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("WiFi connected");

  dht.begin();
  Wire.begin();
  lightMeter.begin();

  for (int i = 0; i < 4; i++) {
    pinMode(relayPins&#91;i&#93;, OUTPUT);
    digitalWrite(relayPins&#91;i&#93;, HIGH); // ปิดทั้งหมดเริ่มต้น
  }

  ws.onEvent(onWebSocketEvent);
  server.addHandler(&ws);
  server.begin();
}

void loop() {
  static unsigned long lastSend = 0;
  if (millis() - lastSend > 2000) {
    lastSend = millis();
    sendSensorData();
  }
}

void sendSensorData() {
  float temp = dht.readTemperature();
  float hum = dht.readHumidity();
  float lux = lightMeter.readLightLevel();

  String data = "{\"temp\":" + String(temp) + ",\"hum\":" + String(hum) + ",\"lux\":" + String(lux) + "}";
  ws.textAll(data);
}

void onWebSocketEvent(AsyncWebSocket *server, AsyncWebSocketClient *client,
                      AwsEventType type, void *arg, uint8_t *data, size_t len) {
  if (type == WS_EVT_DATA) {
    String msg = String((char *)data);
    if (msg == "relay1_on") digitalWrite(relayPins[0], LOW);
    if (msg == "relay1_off") digitalWrite(relayPins[0], HIGH);
    // เพิ่มตามจำนวนรีเลย์
  }
}