#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#include <WiFi.h>
#include <ThingSpeak.h>
#include <ESP32Servo.h>

#define DHTPIN 21   // ESP32'deki uygun pine değiştirin
#define DHTTYPE DHT22

Servo myservo;
int pos = 0;

DHT dht(DHTPIN, DHTTYPE);

#define I2C_ADDR 0x27
#define LCD_COLUMNS 20
#define LCD_LINES 4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
#define THINGSPEAK_API_KEY "4MHZXUUJ3CY5Q1KD"
#define THINGSPEAK_CHANNEL_ID 2394410

const long updateInterval = 1 * 1000;
unsigned long lastUpdate = 0;

WiFiClient client;

void setup() {
  Serial.begin(9600);
  myservo.attach(22);  // ESP32'deki uygun pine değiştirin
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode(15, INPUT_PULLUP);  // ESP32'deki uygun pine değiştirin
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  ThingSpeak.begin(client);
}

void loop() {
  int b;
  int a = digitalRead(15);  // ESP32'deki uygun pine değiştirin
  delay(50);
  if (a == 0) {
    b = b + 1;
    delay(500); // Düğme debounce için kısa bir bekleme
  }

  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  lcd.clear(); // Ekranı temizle

  lcd.setCursor(0, 0);
  lcd.print("NEM DEGERI=");
  lcd.setCursor(11, 0);
  lcd.print(humidity);
  lcd.setCursor(16, 0);
  lcd.print("C");

  if (humidity <= 30) {
    myservo.write(180);
    digitalWrite(10, HIGH);
    digitalWrite(11, LOW);
    lcd.setCursor(0, 1);
    lcd.print("DURUM= SU  ACIK");
  } else if (humidity >= 40) {
    myservo.write(0);
    digitalWrite(10, LOW);
    digitalWrite(11, HIGH);
    lcd.setCursor(0, 1);
    lcd.print("DURUM=SU KAPALI");
  }

  unsigned long currentMillis = millis();

  if (currentMillis - lastUpdate >= updateInterval) {
    ThingSpeak.writeField(THINGSPEAK_CHANNEL_ID, 1, temperature, THINGSPEAK_API_KEY);
    ThingSpeak.writeField(THINGSPEAK_CHANNEL_ID, 2, humidity, THINGSPEAK_API_KEY);
    lastUpdate = currentMillis;
  }
}