#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <LiquidCrystal_I2C.h>



LiquidCrystal_I2C lcd(0x27, 16, 2);

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "asia.pool.ntp.org", 28800, 60000);
WiFiClient  client;
const char *ssid     = "Wokwi-GUEST";
const char *password = "";


const int led_red = 17;
const int led_yellow = 16;
const int led_green = 4;

int flag_red_led=0;
int flag_yellow_led=0;
int flag_green_led=0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  //serial monitor enable


  //lcd test
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("lab 3 v1");
  lcd.setCursor(0,1);
  lcd.print("By Nasrul_2023");
  delay(110);
  lcd.clear();
 
 //connecting to ssid notification  
   WiFi.disconnect();
   WiFi.begin(ssid, password);
   Serial.println();
   Serial.println();
   Serial.print("Connecting to ");
   Serial.println(ssid);
   WiFi.begin(ssid, password);


//check wifi status 
   while (WiFi.status() != WL_CONNECTED) {
    delay(550);
    Serial.print(".");
     
  }
  Serial.println("");
  Serial.print(" connected to wifi...");
  Serial.println(ssid);
  Serial.println();

  //PIN LED AS output
  pinMode(led_red, OUTPUT); // initialize digital ledPin as an output.
  pinMode(led_green, OUTPUT); // initialize digital ledPin as an output.
  pinMode(led_yellow, OUTPUT); // initialize digital ledPin as an output.
timeClient.begin();
}

void loop() {
  //read sensor and display on lcd time with tem& humi
 
//enable ntp
  timeClient.update();
  Serial.println(timeClient.getFormattedTime());
  //delay(1000);
  lcd.setCursor(0,0);
  lcd.print("    ");
  lcd.print(timeClient.getFormattedTime());
  lcd.setCursor(0,1);
  lcd.print("L1(");
  lcd.print(flag_red_led);
  lcd.print(")");
  lcd.print("L2(");
  lcd.print(flag_yellow_led);
  lcd.print(")");
  lcd.print("L3(");
  lcd.print(flag_green_led);
  lcd.print(")");
int masa1= 20;
int masa2=40;
int masa3=55;
int masa_now = timeClient.getSeconds();
//led red timing on
//masa set
if(masa_now<=masa1){
digitalWrite(led_red,HIGH); //
digitalWrite(led_yellow,LOW); //
digitalWrite(led_green,LOW); //
flag_red_led=1;
flag_yellow_led=0;
flag_green_led=0;
}
if(masa_now>masa1 && masa_now<=masa2){
digitalWrite(led_red,LOW); //
digitalWrite(led_yellow,HIGH); //
digitalWrite(led_green,LOW); //
flag_red_led=0;
flag_yellow_led=1;
flag_green_led=0;
}
if(masa_now>masa2 && masa_now<=masa3){
digitalWrite(led_red,LOW); //
digitalWrite(led_yellow,LOW); //
digitalWrite(led_green,HIGH); //
flag_red_led=0;
flag_yellow_led=0;
flag_green_led=1;
}
if(masa_now>masa3){
digitalWrite(led_red,LOW); //
digitalWrite(led_yellow,LOW); //
digitalWrite(led_green,LOW); //
flag_red_led=0;
flag_yellow_led=0;
flag_green_led=0;
}

}