#include <Adafruit_NeoPixel.h>
#include <WiFi.h>
#include "time.h"
#include <PubSubClient.h>

#define NTP_SERVER "pool.ntp.org"        
#define UTC_OFFSET 3600         
#define UTC_OFFSET_DST 3600 

struct tm badam; 

const char* ssid     = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.hivemq.com";

WiFiClient espClient;
PubSubClient client(espClient);

int sekundy = 0;
int minuty = 0;
int hodiny = 0;

int cas = 0;

unsigned long secs = 0;
unsigned long mins = 0;
unsigned long hours = 0;


#define LED_PIN_H    12
#define LED_COUNT_H 24

#define LED_PIN_M    14
#define LED_COUNT_M 60

#define LED_PIN_S    27
#define LED_COUNT_S 60

Adafruit_NeoPixel ring_h(LED_COUNT_H, LED_PIN_H, NEO_RGB + NEO_KHZ800);

Adafruit_NeoPixel ring_m(LED_COUNT_M, LED_PIN_M, NEO_RGB + NEO_KHZ800);

Adafruit_NeoPixel ring_s(LED_COUNT_S, LED_PIN_S, NEO_RGB + NEO_KHZ800);

long cervena_s = ring_s.Color(0,255,0);
long zelena_m = ring_m.Color(255,0,0);
long modra_h = ring_h.Color(0,0,255); 

long nic_s = ring_s.Color(0,0,0);
long nic_m = ring_m.Color(0,0,0);
long nic_h = ring_h.Color(0,0,0);


void setup() {
  Serial.begin(9600);
  Serial.println("Hello, ESP32!");

  ring_h.begin();

  ring_m.begin();

  ring_s.begin();
  
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  client.setServer(mqtt_server, 1883);
  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
  reconnect();
}

void loop() {
  
  getLocalTime_H();
  
/*
  for(int i; i <= 10; i++){
    ring_s.setPixelColor(i, ring_s.Color(255,0,0));
    ring_s.show();
  }
  */
  
  
  
  
  for(uint16_t i = 0; i < sekundy; i++){
    ring_s.setPixelColor(i, cervena_s);
    ring_s.show();
  }

  if(sekundy >= 59){
    sekundy = 0;
    for(uint16_t p; p < LED_COUNT_S; p++){
      ring_s.setPixelColor(p, nic_s);
    }
  }

  if(minuty > 0){

  for(uint16_t i = 0; i < minuty; i++){
    ring_m.setPixelColor(i, zelena_m);
    ring_m.show();
  }

  if(minuty >= 59){
    minuty = 0;
    for(uint16_t l; l < LED_COUNT_M; l++){
      ring_m.setPixelColor(l, nic_m);
      ring_m.show();
    }
  }
  }
  if(hodiny > 0){
  for(uint16_t y; y < hodiny; y++){
    ring_h.setPixelColor(y, modra_h);
    ring_h.show();
  }
  }
  if(millis() >= cas){
    getLocalTime_H();
    String sprava = String(hodiny) + ":" + String(minuty) + ":" + String(sekundy);
    if (!client.connected())
    {
      reconnect();
    }
    client.loop();
    client.publish("remisko", sprava.c_str());
    Serial.println(sprava);
    cas = millis() + 1000;
  }
}

void getLocalTime_H(){
  struct tm badam; 
if (!getLocalTime(&badam) ) 
  {
    Serial.println("Server nefachci");
    return;
  }
  sekundy = badam.tm_sec;
  minuty = badam.tm_min;
  hodiny = badam.tm_hour;
}


void reconnect()
{
while (!client.connected())
{
Serial.print("Nejsom pripojeny");
String clientId = "KubkoJeEspNervyMam";
if (client.connect(clientId.c_str()))
{
  Serial.println("pripojene...");
}
else
{
  Serial.print("nepripojene (3sek)...");
  delay(3000);
}
}
}