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

#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <TM1637.h>
#include "esp_sntp.h"
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

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

const int CLK = 13; //Set the CLK pin connection to the display
const int DIO = 12; //Set the DIO pin connection to the display
TM1637 TM1;

// Replace with your network credentials
const char* ssid = "REPLACE_WITH_YOUR_SSID";
const char* password = "REPLACE_WITH_YOUR_PASSWORD";

#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0
#define UTC_OFFSET_DST 0

int UpdateTime = 15;
boolean colon = 0;

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");
    TM1.displayPChar("Err ");
    Serial.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");

  Serial.println(&timeinfo, "%H:%M:%S %d/%m/%Y  %Z");

  char timeHours[3];
  strftime(timeHours,3, "%H", &timeinfo);
  char timeMinutes[3];
  strftime(timeMinutes,3, "%M", &timeinfo);
  colon = 1 - colon;
  TM1.displayTime(atoi(timeHours), atoi(timeMinutes), colon);
}

void setup() {
  Serial.begin(115200);
  TM1.begin(CLK, DIO, 4); //set up the 4-Digit Display.
  TM1.displayPChar("init");

  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Connecting to ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");
  TM1.displayPChar("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());
  TM1.displayPChar("Conn");

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Online");
  LCD.setCursor(0, 1);
  LCD.println("Updating time...");
  TM1.displayPChar("UpdA");

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
  configTzTime("CET-1CEST-2,M3.5.0/02:00:00,M10.5.0/03:00:00", NTP_SERVER); // Local Time Zone : Paris, France
  sntp_set_sync_interval(900000);
  Serial.print("Sync time in ms : ");
  Serial.println(sntp_get_sync_interval());
}

void loop() {
  printLocalTime();
  delay(500);
}