// SEGMENTS 7-Seg
#define segmentA 25
#define segmentB 26
#define segmentC 27
#define segmentD 14
#define segmentE 12
#define segmentF 33
#define segmentG 22

// FEUX voitures
#define GREEN2 32
#define ORANGE1 17
#define RED3 18
#define GREEN4 23
#define ORANGE6 21
#define RED5 19

// FEUX piétons
#define RED8 16
#define GREEN7 4  // ⬅️ GPIO changé ici (anciennement 3)

const int segments[] = {segmentA, segmentB, segmentC, segmentD, segmentE, segmentF, segmentG};
const bool chiffres[10][7] = {
  {1,1,1,1,1,1,0}, // 0
  {0,1,1,0,0,0,0}, // 1
  {1,1,0,1,1,0,1}, // 2
  {1,1,1,1,0,0,1}, // 3
  {0,1,1,0,0,1,1}, // 4
  {1,0,1,1,0,1,1}, // 5
  {1,0,1,1,1,1,1}, // 6
  {1,1,1,0,0,0,0}, // 7
  {1,1,1,1,1,1,1}, // 8
  {1,1,1,1,0,1,1}  // 9
};

unsigned long dernierChangement = 0;
unsigned long dernierCompteur = 0;
int etat = 0;
int secondesRestantes = 0;
bool compteurActif = false;

void setup() {
  // Initialisation des feux
  pinMode(RED3, OUTPUT); pinMode(GREEN2, OUTPUT); pinMode(ORANGE1, OUTPUT);
  pinMode(RED5, OUTPUT); pinMode(GREEN4, OUTPUT); pinMode(ORANGE6, OUTPUT);
  pinMode(RED8, OUTPUT); pinMode(GREEN7, OUTPUT);

  // Segments 7-segments
  for (int i = 0; i < 7; i++) pinMode(segments[i], OUTPUT);
}

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

  // Gestion du compteur : actif si RED8 est LOW (piétons passent)
  if (digitalRead(RED8) == LOW) {
    if (!compteurActif) {
      secondesRestantes = 10;
      dernierCompteur = now;
      compteurActif = true;
    }
    if (now - dernierCompteur >= 1000 && secondesRestantes >= 0) {
      dernierCompteur = now;
      afficherChiffre(secondesRestantes % 10);
      secondesRestantes--;
    }
  } else {
    compteurActif = false;
    eteindreAfficheur();
  }

  // Cycle de feux
  switch (etat) {
    case 0: // PIÉTONS passent
      digitalWrite(RED3, HIGH);
      digitalWrite(GREEN4, HIGH);
      digitalWrite(RED8, LOW);
      digitalWrite(GREEN7, HIGH);  // ✅ allumée ici
      digitalWrite(GREEN2, LOW);
      digitalWrite(RED5, LOW);
      digitalWrite(ORANGE1, LOW);
      digitalWrite(ORANGE6, LOW);
      if (now - dernierChangement >= 10000) {
        etat = 1;
        dernierChangement = now;
      }
      break;

    case 1: // ORANGE (transition)
      digitalWrite(GREEN7, LOW);   // 🔴 éteinte ici
      digitalWrite(RED8, HIGH);
      digitalWrite(ORANGE1, HIGH);
      digitalWrite(ORANGE6, HIGH);
      digitalWrite(GREEN4, LOW);
      if (now - dernierChangement >= 3000) {
        etat = 2;
        dernierChangement = now;
      }
      break;

    case 2: // VOITURES passent
      digitalWrite(RED3, LOW);
      digitalWrite(GREEN2, HIGH);
      digitalWrite(RED5, HIGH);
      digitalWrite(ORANGE1, LOW);
      digitalWrite(ORANGE6, LOW);
      if (now - dernierChangement >= 10000) {
        etat = 3;
        dernierChangement = now;
      }
      break;

    case 3: // ORANGE retour
      digitalWrite(GREEN2, LOW);
      digitalWrite(RED5, LOW);
      digitalWrite(ORANGE1, HIGH);
      digitalWrite(ORANGE6, HIGH);
      if (now - dernierChangement >= 3000) {
        etat = 0;
        dernierChangement = now;
      }
      break;
  }
}

// === Fonctions d'affichage ===
void afficherChiffre(int num) {
  for (int i = 0; i < 7; i++) {
    digitalWrite(segments[i], chiffres[num][i] ? LOW : HIGH); // Anode commune
  }
}

void eteindreAfficheur() {
  for (int i = 0; i < 7; i++) {
    digitalWrite(segments[i], HIGH);
  }
}