#include <WiFi.h>
#include <PubSubClient.h>

// WIFI
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// MQTT
const char* mqtt_server = "broker.hivemq.com";
WiFiClient espClient;
PubSubClient client(espClient);

// Broches LED & capteurs
const int red1 = 15, green1 = 26, blue1 = 27, pir1 = 32;
const int red2 = 14, green2 = 12, blue2 = 13, pir2 = 33;
const int red3 = 18, green3 = 19, blue3 = 21, pir3 = 25;
const int ldrPin = 34;

void setup_wifi() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi connecté !");
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Connexion MQTT...");
    if (client.connect("ESP32Client")) {
      Serial.println("connecté !");
      client.subscribe("test/topic"); // tu peux changer le topic
    } else {
      Serial.print("Échec, rc=");
      Serial.print(client.state());
      Serial.println(" nouvelle tentative dans 5 sec");
      delay(500);
    }
  }
}

void setup() {
  Serial.begin(115200);
  
  pinMode(red1, OUTPUT); pinMode(green1, OUTPUT); pinMode(blue1, OUTPUT); pinMode(pir1, INPUT);
  pinMode(red2, OUTPUT); pinMode(green2, OUTPUT); pinMode(blue2, OUTPUT); pinMode(pir2, INPUT);
  pinMode(red3, OUTPUT); pinMode(green3, OUTPUT); pinMode(blue3, OUTPUT); pinMode(pir3, INPUT);

  setup_wifi();
  client.setServer(mqtt_server, 1883);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop(); // Important : ne bloque pas

  int motion1 = digitalRead(pir1);
  int motion2 = digitalRead(pir2);
  int motion3 = digitalRead(pir3);
  int ldrValue = analogRead(ldrPin);

  Serial.println("LDR: " + String(ldrValue));

  int seuilRouge = 3000;
  int seuilVert = 1000;

  if (motion1 == HIGH) {
    afficherCouleurSelonLDR(ldrValue, red1, green1, blue1, seuilRouge, seuilVert);
  } else {
    eteindreLED(red1, green1, blue1);
  }

  if (motion2 == HIGH) {
    afficherCouleurSelonLDR(ldrValue, red2, green2, blue2, seuilRouge, seuilVert);
  } else {
    eteindreLED(red2, green2, blue2);
  }

  if (motion3 == HIGH) {
    afficherCouleurSelonLDR(ldrValue, red3, green3, blue3, seuilRouge, seuilVert);
  } else {
    eteindreLED(red3, green3, blue3);
  }

  delay(500); // petit délai mais pas trop
}

void afficherCouleurSelonLDR(int ldr, int r, int g, int b, int seuilRouge, int seuilVert) {
  if (ldr > seuilRouge) {
    setColor(r, g, b, "red");
  } else if (ldr > seuilVert) {
    setColor(r, g, b, "green");
  } else {
    setColor(r, g, b, "blue");
  }
}

void setColor(int r, int g, int b, String color) {
  digitalWrite(r, color == "red" ? HIGH : LOW);
  digitalWrite(g, color == "green" ? HIGH : LOW);
  digitalWrite(b, color == "blue" ? HIGH : LOW);
}

void eteindreLED(int r, int g, int b) {
  digitalWrite(r, LOW);
  digitalWrite(g, LOW);
  digitalWrite(b, LOW);
}