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

#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0
#define UTC_OFFSET_DST 0
#define LED 13
#define Relay 2

const int DHT_PIN = 15;

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);
DHTesp dhtSensor;

byte temperturechar[8] = {
  0b10000,
  0b00110,
  0b01001,
  0b01000,
  0b01000,
  0b01001,
  0b00110,
  0b00000,
};

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;
  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");
}

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

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  pinMode(LED, OUTPUT);
  pinMode(Relay, 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.println("IP address: ");
  Serial.println(WiFi.localIP());

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Test");
  LCD.setCursor(0, 1);
  LCD.println("Uploading time... ");

  LCD.createChar(6, temperturechar);

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
}

void loop() {

  printLocalTime();
  delay(250);
  digitalWrite(LED, HIGH);
  delay(500);
  digitalWrite(LED, LOW);
  delay(500);
  digitalWrite(LED, HIGH);
  delay(1000);

  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("Humi: " + String(data.humidity) + "%");

  LCD.setCursor(0, 1);
  LCD.print("Temp: " + String(data.temperature));
  LCD.setCursor(12, 1);
  LCD.write(byte(6));

  delay(3000);
  LCD.clear();
}