// 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> 

TM1637 firstBlock, secondBlock;

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

//define display interface data of the TM1637 displays
#define firstBlock_digits 4
#define firstBlock_clkPin 25
#define firstBlock_dataPin 26


#define secondBlock_digits 2
#define secondBlock_clkPin 32
#define secondBlock_dataPin 33



//define NTP server data
#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0//TIMEZONE
#define UTC_OFFSET_DST 0//DAY SAVING TIME OFFSET


//function for generating "loading" animation
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 printlocalTimeOnSegments () {

  struct tm timeinfoSegments;
  if (getLocalTime(&timeinfoSegments)) {

    firstBlock.displayTime(timeinfoSegments.tm_hour,timeinfoSegments.tm_min, false);


    secondBlock.displayTime(timeinfoSegments.tm_sec,timeinfoSegments.tm_sec,false);


    //secondBlock.displayPChar("00");



  }
  else {

  }

}

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


  // SWAPPED
  firstBlock.begin(secondBlock_clkPin, secondBlock_dataPin, secondBlock_digits);
  secondBlock.begin(firstBlock_clkPin, firstBlock_dataPin, firstBlock_digits);
  

  /*
  firstBlock.begin(firstBlock_clkPin, firstBlock_dataPin, firstBlock_digits);
  secondBlock.begin(secondBlock_clkPin, secondBlock_dataPin, secondBlock_digits);
  */


  firstBlock.setBrightness(7);
  secondBlock.setBrightness(7);




  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();
  }


  //Spinner demo
  /*
  while (true) {
    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();
  printlocalTimeOnSegments();
  delay(250);
  //firstBlock.displayPChar("----");
  //secondBlock.displayPChar("00");
}