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

const int stepsPerRevolution = 600;

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

char server [] = "api.thingspeak.com";
unsigned long channelID = 2143207;
char readAPIKey[] = "AI3DDZBWW6J1FJ61";
unsigned int field_suhu = 1;
unsigned int field_kelembaban = 2;
unsigned int field_tinggi = 3;
unsigned int field_cahaya = 4;
unsigned int field_PIR = 5;

const int led_lampu = 18;
const int led_alarm = 19;
const int buzzer = 23;
const int servoPin = 32;
Stepper stepper_tirai(stepsPerRevolution, 14, 27, 26, 25);
#define I2C_ADDR 0x27
#define LCD_COLUMNS 16
#define LCD_LINES 4
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int suhu;
int kelembaban;
int tinggi;
int cahaya;
int PIR;
int pos = 0;
WiFiClient client;
Servo servo_pakan;


void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  pinMode(led_lampu, OUTPUT);
  pinMode(led_alarm, OUTPUT);
  pinMode(buzzer, INPUT);
  servo_pakan.attach(servoPin, 500, 2400);
  stepper_tirai.setSpeed(80);

  lcd.init();
  lcd.backlight();

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

  delay(1000);
}

void loop() {
  delay(20000);
  Serial.println("Waiting...");

  suhu = readTSData(channelID, field_suhu);
  kelembaban = readTSData(channelID, field_kelembaban);
  tinggi = readTSData(channelID, field_tinggi);
  cahaya = readTSData(channelID, field_cahaya);
  PIR = readTSData(channelID, field_PIR);

  lcd.setCursor(0,0);
  lcd.print("Suhu: ");
  lcd.print(suhu);

  lcd.setCursor(0,1);
  lcd.print("Kelembaban: ");
  lcd.print(kelembaban);

  lcd.setCursor(0,2);
  lcd.print("T Pakan: ");
  lcd.print(suhu);

  lcd.setCursor(0,3);
  lcd.print("Cahaya: ");
  lcd.print(cahaya);

  lcd.setCursor(12,3);
  lcd.print("Detec: ");
  lcd.print(PIR);

  if(suhu < 18){
    digitalWrite(led_lampu, HIGH);
  }else{
    digitalWrite(led_lampu, LOW);
  }

  if(tinggi >= 200){
    servo_pakan.write(180);
    delay(15);
  }else{
    servo_pakan.write(90);
    delay(15);
  }

  if(cahaya >= 500 && pos == 0){
    stepper_tirai.step(stepsPerRevolution);
    pos = 1;
    delay(500);

  }else if(cahaya < 500 && pos == 1){
    stepper_tirai.step(-stepsPerRevolution);
    pos = 0;
    delay(500);

  }else if(cahaya >= 500 && pos == 1){
    delay(500);

  }else if(cahaya < 500 && pos == 0){
    delay(500);
  }

  if(PIR == 1){
    digitalWrite(buzzer, HIGH);
    digitalWrite(led_alarm, HIGH);
  }else{
    digitalWrite(buzzer, LOW);
    digitalWrite(led_alarm, LOW);
  }

}

float readTSData(long TSChannel, unsigned int TSField){
  int data = ThingSpeak.readFloatField(TSChannel, TSField, readAPIKey);
  Serial.println("Data read from Thingspeak : " + String(data));
  return data;
}