#include <DHTesp.h>
#include <ESP32Servo.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <ThingSpeak.h>

const int DHT_PIN = 15;
const int ServoPIN = 2;

DHTesp dhtSensor;
Servo myservo;
LiquidCrystal_I2C lcd(0x27, 16, 2);
WiFiClient client;

const char* ssid = "Wokwi-GUEST";
const char* pass = "";

unsigned long myChannelNumber = 2342609;
const char* myWriteAPIKey = "HSLRUJWCWFVQR4E3";
const char* server = "api.thingspeak.com";

int temp;
int hum;
int pos = 0;

void setup() {
  Serial.begin(9600);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  myservo.attach(ServoPIN, 500, 2400);
  lcd.init();
  lcd.backlight();

  WiFi.begin(ssid, pass);
  while(WiFi.status() != WL_CONNECTED){
    Serial.print(".");
    delay(100);
  }
  Serial.println("WiFi Connected!");
  Serial.println(" ");
  WiFi.mode(WIFI_STA);

  ThingSpeak.begin(client);

}

void loop() {
  if(WiFi.status() != WL_CONNECTED){
    Serial.print("Attempting to reconect");
    while(WiFi.status() != WL_CONNECTED){
      Serial.print(".");
      delay(100);
    }
    Serial.println("\nConnected.");
  }

  lcd.setCursor(0,0);
  lcd.print("ABE80");
  lcd.setCursor(0,1);
  lcd.print("EXER8");

  temp = dhtSensor.getTemperature();
  Serial.print("Temperature,C = ");
  Serial.print(temp);
  Serial.println(" ");
  lcd.setCursor(8,0);
  lcd.print("T,C = ");
  lcd.print(temp);

  hum = dhtSensor.getHumidity();
  Serial.print("Humidity,% = ");
  Serial.print(hum);
  Serial.println(" ");
  lcd.setCursor(8,1);
  lcd.print("H,% = ");
  lcd.print(hum);

  if(temp >= 35 && hum >= 85){
    for(pos = 0; pos <= 180; pos += 1){
      myservo.write(pos);
      delay(15);
    }
    for(pos = 180; pos >= 0; pos -= 1){
      myservo.write(pos);
      delay(15);
    }
  }

ThingSpeak.setField(1, temp);
ThingSpeak.setField(2, hum);

int x = ThingSpeak.writeFields(2342609, "HSLRUJWCWFVQR4E3");
if(x = 200){
  Serial.println("Channel update successful.");
}

else{
  Serial.println("Problem updating channel. HTTP error code" + String(x));
}
Serial.println(" ");

delay(20000);
lcd.clear();
}