// https://www.youtube.com/watch?v=ZWRT4mDb8O0
// Acrescimo OTA by Ezequiel M. Rezende

#include <TM1637Display.h> // https://github.com/avishorp/TM1637  
#include <NTPClient.h>     // https://github.com/arduino-libraries/NTPClient
#include <WiFi.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>

// Module connection pins (Digital Pins)
// For ESP-01:
// CLK to GPIO2 
// DIO to GPIO0
#define CLK 22
#define DIO 5

// Set up the TM1637 Display
TM1637Display display(CLK, DIO);

//Dados para conexão com a rede Wi-fi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

/*
You need to adjust the UTC offset for your timezone in milliseconds. Refer the list of UTC time offsets.  Here are some examples for different timezones:
For UTC -5.00 : -5 * 60 * 60 : -18000
For UTC +1.00 : 1 * 60 * 60 : 3600
For UTC +0.00 : 0 * 60 * 60 : 0
const long utcOffsetInSeconds = 3600;
*/

const long utcOffsetInSeconds = 18000;  

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);

void setup(){
  Serial.begin(115200);
  Serial.println("Iniciando...");

  display.clear(); // Clear the display:
  
  WiFi.begin(ssid, password);

  while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    Serial.print ( "." );
  }
  timeClient.begin();

// ----------------------------------------------------------------------------------------------- //
// Porta padrao do ESP8266 para OTA eh 8266 - Voce pode mudar ser quiser, mas deixe indicado!
// ArduinoOTA.setPort(8266);
 
// O Hostname padrao eh esp8266-[ChipID], mas voce pode mudar com essa funcao
ArduinoOTA.setHostname("IotClock_7x4_Ota");
 
// Nenhuma senha eh pedida, mas voce pode dar mais seguranca pedindo uma senha pra gravar
// ArduinoOTA.setPassword((const char *)"123");

ArduinoOTA.onStart([]() {
    Serial.println("Inicio...");
  });
  ArduinoOTA.onEnd([]() {
    Serial.println("nFim!");
  });
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    Serial.printf("Progresso: %u%%r", (progress / (total / 100)));
  });
  ArduinoOTA.onError([](ota_error_t error) {
    Serial.printf("Erro [%u]: ", error);
    if (error == OTA_AUTH_ERROR) Serial.println("Autenticacao Falhou");
    else if (error == OTA_BEGIN_ERROR) Serial.println("Falha no Inicio");
    else if (error == OTA_CONNECT_ERROR) Serial.println("Falha na Conexao");
    else if (error == OTA_RECEIVE_ERROR) Serial.println("Falha na Recepcao");
    else if (error == OTA_END_ERROR) Serial.println("Falha no Fim");
  });
  ArduinoOTA.begin();
  Serial.println("Pronto");
  Serial.print("Endereco IP: ");
  Serial.println(WiFi.localIP());
}
// ----------------------------------------------------------------------------------------------- //

void loop() {
  
  ArduinoOTA.handle(); // OTA handle
  
  int A,B;
  
  timeClient.update();
  display.setBrightness(7);                   // Set the brightness:
  
  A = timeClient.getHours() * 100 + timeClient.getMinutes();
  B = timeClient.getSeconds();

  if((B % 2) == 0)
  {display.showNumberDecEx(A, 0b01000000 , false, 4, 0);}
  else
  {display.showNumberDecEx(A, 0b00000000 , false, 4, 0);}
}