#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>


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

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "1.asia.pool.ntp.org");
String weekDays[7]={"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
String months[12]={"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);

  // Connect to Wi-Fi
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  // Initialize a NTPClient to get time
  timeClient.begin();
  // Set offset time in seconds to adjust for your timezone (UTC+7 for Thailand)
  timeClient.setTimeOffset(25200); // 7 * 3600

}

void loop() {
  time_ctrl();
}


void time_ctrl(){
  
  timeClient.update();
  time_t epochTime = timeClient.getEpochTime();
  String formattedTime = timeClient.getFormattedTime(); // 00:00:00
  Serial.print("Formatted Time: ");
  Serial.println(formattedTime); 

  int currentHour = timeClient.getHours();
  Serial.print("Hour: ");
  Serial.println(currentHour);

  int currentMinute = timeClient.getMinutes();
  Serial.print("Minutes: ");
  Serial.println(currentMinute); 
   
  int currentSecond = timeClient.getSeconds();
  Serial.print("Seconds: ");
  Serial.println(currentSecond);  

  String weekDay = weekDays[timeClient.getDay()]; 
  struct tm *ptm = gmtime ((time_t *)&epochTime); 
  int monthDay = ptm->tm_mday;

  int currentMonth = ptm->tm_mon + 1;
  Serial.print("Month: ");
  Serial.println(currentMonth);

  String currentMonthName = months[currentMonth-1];
  Serial.print("Month name: ");
  Serial.println(currentMonthName);

  if (currentMonth == 2 || currentMonth == 3 || currentMonth == 4){
    Serial.println("ฤดูร้อน");
    if (currentHour >= 6 && currentHour <= 18){
      Serial.println("Start up Solar");
    }
    else {
      Serial.println("Off all relays");
    }
  }
  else if (currentMonth == 5 || currentMonth == 6 || currentMonth == 7 || currentMonth == 8 || currentMonth == 9 || currentMonth == 10){
    Serial.println("ฤดูฝน");
    if (currentHour >= 6 && currentHour <= 18){
      Serial.println("Start up Solar");
    }
    else {
      Serial.println("Off all relays");
    }
  }
  else if (currentMonth == 11 || currentMonth == 12 || currentMonth == 1) {
    Serial.println("ฤดูหนาว");
    if (currentHour >= 7 && currentHour <= 18){
      Serial.println("Start up Solar");
    }
    else {
      Serial.println("Off all relays");
    }
  }

  Serial.println("");

  delay(1000);
}