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

LiquidCrystal_I2C lcd(0x27, 16, 2);

const char ssid[] = "Wokwi-GUEST";
const char password[] = "";
WiFiClient client;

unsigned long myChannelNumber = 2024323;  //Nomor channel Thingspeak
const char * myReadAPIKey = "ZW1318XCJ2NIXZV5"; //kode ReadAPIKey

#define LED 13
const int servoPin = 32;
int pos = 0;

Servo servo;

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  servo.attach(servoPin, 500, 2400);
  pinMode (LED, OUTPUT);

  WiFi.begin(ssid, password);
  while(WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.print("Connected to ");
  Serial.print(ssid);
  ThingSpeak.begin(client);
}

void loop() {
  int statusCode = 0; //membuat statusCode bernilai nol kembali
  long count = ThingSpeak.readLongField(myChannelNumber, 1, myReadAPIKey);   //pembacaan nilai pada thingspeak di field motion
  statusCode = ThingSpeak.getLastReadStatus();

  if(statusCode == 200){
    for (pos = 0; pos <= 180; pos += 1) {
      servo.write(pos);
      delay(15);
    }
    lcd.clear();
    lcd.setCursor (0, 0);
    lcd.print ("Lid Opened.");
    delay(2000);
    for (pos = 180; pos >= 0; pos -= 1) {
      servo.write(pos);
      delay(15);
    }
    lcd.setCursor (0, 0);
    lcd.print ("Lid Closed.");
  }
  else{ //jika bukan 200 artinya mengalami error
    Serial.println("Problem reading channel. HTTP error code " + String(statusCode));
  }

  int statusCodeLED = 0; //membuat statusCode bernilai nol kembali
  float countHum = ThingSpeak.readFloatField(myChannelNumber, 2, myReadAPIKey);   //pembacaan nilai pada thingspeak di field hum
  statusCodeLED = ThingSpeak.getLastReadStatus();

  if(statusCodeLED == 200){ //200 adalah kode status dari thingspeak
    digitalWrite(LED,1);
    lcd.setCursor (0, 1);
    lcd.print ("Humidity High");
    delay(2000);
    digitalWrite(LED,0);
    lcd.clear();
    lcd.setCursor (0, 1);
    lcd.print ("Humidity Low");
  }
  else{ //jika bukan 200 artinya mengalami error
    Serial.println("Problem reading channel. HTTP error code " + String(statusCodeLED));
  }

  delay(1000); 
}