#include "Segment.h"
#include "DHT.h"

#define DHTPIN 13
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

int segment[] = {2, 3, 4, 5};
uint8_t arrs[] = {6, 7, 8, 9, 10, 11, 12};

SiteSegment seg1(arrs);

int startHours = 15;
int startMinutes = 59;
unsigned long switchMillis = 0;
const long switchInterval = 60000;
const long tempDisplayInterval = 5000;

void intToTime(int timeInt, int& hours, int& minutes) {
  hours = timeInt / 100;
  minutes = timeInt % 100;
}

String SetNumber(int timeInt) {
  int hours, minutes;
  intToTime(timeInt, hours, minutes);
  char buffer[5];
  sprintf(buffer, "%02d%02d", hours, minutes);
  return String(buffer);
}

void displayClock() {
  unsigned long currentMillis = millis();
  int elapsedMinutes = (currentMillis - switchMillis) / 60000;
  int totalMinutes = elapsedMinutes % 60;
  int displayMinutes = (startMinutes + totalMinutes) % 60;
  int displayHours = startHours + (startMinutes + totalMinutes) / 60;
  int displayTime = displayHours * 100 + displayMinutes;

  String num = SetNumber(displayTime);
  for (int i = 2; i < 6; i++) {
    seg1.ShowNum(num[i - 2] - '0');
    digitalWrite(i, LOW);
    digitalWrite(i, HIGH);
  }
}

void displayTemperature() {
  float temperature = dht.readTemperature();
  if (!isnan(temperature)) {
    int tempInt = (int)abs(temperature);

    seg1.ShowNum(tempInt / 10);
    digitalWrite(segment[1], LOW);
    digitalWrite(segment[1], HIGH);

    seg1.ShowNum(tempInt % 10);
    digitalWrite(segment[2], LOW);
    digitalWrite(segment[2], HIGH);

    int decimalPart = (int)((temperature - tempInt) * 10);
    seg1.ShowNum(decimalPart);
    digitalWrite(segment[3], LOW);
    digitalWrite(segment[3], HIGH);
  } else {
    Serial.println("Nepodařilo se načíst teplotu ze senzoru DHT!");
  }
}

void setup() {
  Serial.begin(9600);
  dht.begin();
  seg1.init();
  for (int i : segment) {
    pinMode(i, OUTPUT);
    digitalWrite(i, HIGH);
  }
}

void loop() {
  unsigned long currentMillis = millis();

  if (currentMillis - switchMillis >= switchInterval) {
    switchMillis = currentMillis;
    startMinutes++;
    if (startMinutes >= 60) {
      startMinutes = 0;
      startHours++;
      if (startHours >= 24) {
        startHours = 0;
      }
    }
  }

  if ((currentMillis - switchMillis) < tempDisplayInterval) {
    displayTemperature();
  } else {
    displayClock();
  }

  delay(100);
}