// Learn about the ESP32 WiFi simulation in
// https://docs.wokwi.com/guides/esp32-wifi

#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);
bool lockState;
bool button1State = false;



#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0
#define UTC_OFFSET_DST 0
#define BUTTON_PIN 34
#define LED_PIN 12

void spinner() {
  static int8_t counter = 0;
  const char* glyphs = "\xa1\xa5\xdb";
  LCD.setCursor(15, 1);
  LCD.print(glyphs[counter++]);
  if (counter == strlen(glyphs)) {
    counter = 0;
  }
}

void printLocalTime() {
  struct tm timeinfo;
  time_t now = time(NULL);
  struct tm *tm_struct = localtime(&now);

  int hour = tm_struct->tm_hour;
  //Serial.println(hour);  
  if (!getLocalTime(&timeinfo)) {
    LCD.setCursor(0, 1);
    LCD.println("Connection Err");
    return;
  }
  LCD.setCursor(8, 0);
  LCD.println(&timeinfo, "%H:%M:%S");

  //LCD.setCursor(0, 1);
  //LCD.println(&timeinfo, "%d/%m/%Y   %Z");
  if (hour >= 18){
    lockState = true;
  }
  else{
    lockState = false;
  }
  LCD.setCursor(0,0);
  LCD.println(lockState);

  //int hour = timeinfo->tm_hour;
  //LCD.setCursor(0,0);
  //LCD.println(hour);
}

void setup() {
  Serial.begin(115200);

  pinMode(BUTTON_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Connecting to ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");

  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
    spinner();
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  LCD.clear();
  LCD.setCursor(0, 0);
  //LCD.println("Online");
  LCD.setCursor(0, 1);
  LCD.println("Updating time...");

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
}

void loop() {
  printLocalTime();   
  if (lockState == true){
    digitalWrite(12, HIGH);
    if (digitalRead(BUTTON_PIN) == HIGH){
      LCD.setCursor(0, 1);
      LCD.println("open");
      button1State = true;
    }
    else{
      LCD.setCursor(0, 1);
      LCD.println("closed");
      button1State = false;
    }
  }
  else{
    digitalWrite(12, LOW);
    if (digitalRead(BUTTON_PIN) == HIGH){
      LCD.setCursor(0, 1);
      LCD.println("still locked");
      button1State = true;
    }
    else{
      LCD.setCursor(0, 1);
      LCD.println("locked");
      button1State = false;
    }
  }
  delay(1000 );
}