#include <LiquidCrystal_I2C.h>
#include <RTClib.h>
#include <HTTPClient.h>
#include <WiFiClient.h>
#include <WiFi.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);
RTC_DS1307 rtc;

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* webAppUrl = "https://script.google.com/macros/s/AKfycbwnxZJZYCeXxsIp3VwdFS0vNpjTuWm0aSf-b93LgmwdNpzdCHVBsaQoH1B0kOSoH4rD-g/exec";

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

int YEAR, MONTH, DAY, HOUR, MIN, SEC, DAY_OF_WEEK;
#define ON HIGH
#define OFF LOW
#define Relay1_pin 19
#define Relay2_pin 18
#define Relay3_pin 17 

// Prototipe fungsi
void Timer_ON(int Coil, int H, int M);
void Timer_OFF(int Coil, int H, int M);
void sendDataToScript(String status);

void setup() {
  pinMode(Relay1_pin, OUTPUT);
  pinMode(Relay2_pin, OUTPUT);
  pinMode(Relay3_pin, OUTPUT);
  digitalWrite(Relay1_pin, OFF);
  digitalWrite(Relay2_pin, OFF);
  digitalWrite(Relay3_pin, OFF);

  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1) delay(10);
  }

  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  lcd.init();
  lcd.backlight();
  lcd.setCursor(3, 0);
  lcd.print("Premphon IoT");
  lcd.setCursor(1, 3);
  lcd.print("LiquidCrystal_I2C");

  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
  DateTime now = rtc.now();

  YEAR = now.year();
  MONTH = now.month();
  DAY = now.day();
  HOUR = now.hour();
  MIN = now.minute();
  SEC = now.second();
  DAY_OF_WEEK = now.dayOfTheWeek();

  lcd.setCursor(0, 1);
  lcd.print(DAY);   lcd.print("/");
  lcd.print(MONTH);   lcd.print("/");
  lcd.print(YEAR);   lcd.print(":");
  lcd.print(HOUR);   lcd.print(":");
  lcd.print(MIN);   lcd.print(":");
  lcd.print(SEC);   
  lcd.setCursor(5, 2);
  lcd.print(daysOfTheWeek[DAY_OF_WEEK]);

  Serial.print(YEAR, DEC);
  Serial.print('/');
  Serial.print(MONTH, DEC);
  Serial.print('/');
  Serial.print(DAY, DEC);
  Serial.print(" (");
  Serial.print(daysOfTheWeek[DAY_OF_WEEK]);
  Serial.print(") ");
  Serial.print(HOUR, DEC);
  Serial.print(':');
  Serial.print(MIN, DEC);
  Serial.print(':');
  Serial.print(SEC, DEC);
  Serial.println();

  Timer_ON(1, 11, 49);
  Timer_OFF(1, 11, 50);

  // Kirim data ke server Google Apps Script
  sendDataToScript(String(HOUR) + ":" + String(MIN) + ":" + String(SEC));

  delay(1000);
}

void Timer_ON(int Coil, int H, int M) {
  if((HOUR == H) && (MIN == M)) {
    Serial.print("Relay " + String(Coil) + " is ON");
    digitalWrite(Relay1_pin, ON);
    digitalWrite(Relay2_pin, ON);
    digitalWrite(Relay3_pin, ON);
  }
}

void Timer_OFF(int Coil, int H, int M) {
  if((HOUR == H) && (MIN == M)) {
    Serial.print("Relay " + String(Coil) + " is OFF");
    digitalWrite(Relay1_pin, OFF);
    digitalWrite(Relay2_pin, OFF);
    digitalWrite(Relay3_pin, OFF);
  }
}

void sendDataToScript(String status) {
  HTTPClient http;
  String serverPath = String(webAppUrl) + "?status=" + status;

  Serial.print("Connecting to server: ");
  Serial.println(serverPath);

  if (WiFi.status() == WL_CONNECTED) {
    if (http.begin(serverPath)) {
      int httpCode = http.GET();
      if (httpCode > 0) {
        Serial.print("Server response code: ");
        Serial.println(httpCode);
        if (httpCode == HTTP_CODE_OK) {
          String payload = http.getString();
          Serial.println("Payload: " + payload);
        }
      } else {
        Serial.print("HTTP GET request failed with error code: ");
        Serial.println(httpCode);
        Serial.println(http.errorToString(httpCode).c_str());
      }
      http.end();
    } else {
      Serial.println("Unable to connect to the server");
    }
  } else {
    Serial.println("WiFi is not connected");
  }
}