#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include <Wire.h>
#include <RTClib.h>

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 4
#define CLK_PIN   13
#define DATA_PIN  11
#define CS_PIN    10

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
RTC_DS1307 rtc;

char szTime[9];    // HH:MM:SS
char szMesg[10];   // Message buffer
float celsius;
float fahrenheit;
int display = 0;
float humidity = 0; // Non utilisé avec NTC

// Configuration NTC
#define NTC_PIN A3
const float Rref = 10000.0;
const float Beta = 3950.0;
const float T0 = 298.15;
const float R0 = 10000.0;

// Déclaration du prototype de fonction pour éviter l'erreur
void getTime(char *psz, bool f = true);

void setup() {
  P.begin();
  P.setIntensity(0);  // Luminosité de l'afficheur
  P.displayText(szMesg, PA_CENTER, 100, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);

  Wire.begin();
  rtc.begin();

  if (!rtc.isrunning()) {
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {
  static uint32_t lastUpdate = 0;
  static uint32_t lastDisplay = 0;

  if (millis() - lastUpdate >= 1000) {
    lastUpdate = millis();
    getTemperature();
    getTime(szTime, true);
  }

  if (millis() - lastDisplay >= 8000) {
    lastDisplay = millis();
    switch (display) {
      case 0: // Heure
        P.setTextEffect(0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
        display++;
        strcpy(szMesg, szTime);
        break;

      case 1: // Température °C
        P.setTextEffect(0, PA_SCROLL_UP, PA_SCROLL_DOWN);
        display++;
        dtostrf(celsius, 5, 1, szMesg);
        strcat(szMesg, "C");
        break;

      case 2: // Température °F
        P.setTextEffect(0, PA_SCROLL_DOWN, PA_SCROLL_LEFT);
        display = 0;
        dtostrf(fahrenheit, 5, 1, szMesg);
        strcat(szMesg, "F");
        break;
    }

    P.displayReset(0);
  }

  if (P.displayAnimate()) {
    // Rien à faire ici
  }
}

void getTemperature() {
  int analogValue = analogRead(NTC_PIN);
  float voltage = analogValue * 5.0 / 1023.0;
  float Rntc = (voltage * Rref) / (5.0 - voltage);

  float temperatureK = 1.0 / (1.0 / T0 + (1.0 / Beta) * log(Rntc / R0));
  celsius = temperatureK - 273.15;
  fahrenheit = celsius * 1.8 + 32;
}

void getTime(char *psz, bool f) {
  DateTime now = rtc.now();
  sprintf(psz, "%02d:%02d", now.hour(), now.minute());

}