#include <WiFi.h>
#include "DHTesp.h"
#include "ThingSpeak.h"

const int DHT_PIN = 15;
const int LDR_PIN = 35;  // LDR sensor pin
const int BUZZER_PIN = 23;  // Buzzer pin
const int LED_PIN = 13;
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = 1816539; //2226105;
const char* myApiKey = "WZU4XH3QQKYOEI9Q"; //"5ZZNFKTB60NEJIV9";
const char* server = "api.thingspeak.com";

DHTesp dhtSensor;
WiFiClient client;
void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LDR_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  int ldrValue = analogRead(LDR_PIN);
  
  ThingSpeak.setField(1, data.temperature);
  ThingSpeak.setField(2, data.humidity);
  ThingSpeak.setField(3, ldrValue);

  if (data.temperature > 35 && data.humidity > 40 && ldrValue > 300) {
    digitalWrite(LED_PIN, HIGH);
    tone(BUZZER_PIN, 1000); // Start buzzer sound
  } else {
    digitalWrite(LED_PIN, LOW);
    noTone(BUZZER_PIN); // Stop buzzer sound
  }

  int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);

  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("LDR Value: " + String(ldrValue));
  
  if (x == 200) {
    Serial.println("Data pushed successfully");
  } else {
    Serial.println("Push error" + String(x));
  }
  Serial.println("---");

  delay(10000);
}