#include <WiFi.h>  
#include <PubSubClient.h>
#define buzzer 14
#define pompe 2
#define led 27
const char* ssid = "Wokwi-GUEST"; ///  wifi ssid 
const char* password = "";
const char* mqtt_server = "test.mosquitto.org";
WiFiClient espClient;
PubSubClient client(espClient);



unsigned long previousMillis = 0;
const long interval = 5000;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
    pinMode(buzzer,OUTPUT);
    digitalWrite(buzzer, LOW);
    pinMode(pompe,OUTPUT);
    pinMode(led,OUTPUT);
    digitalWrite(led, LOW);
    setup_wifi(); 
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback); 

}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
}

void setup_wifi() { 
  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.mode(WIFI_STA); 
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) { 
    delay(500);
    Serial.print(".");
  }

  randomSeed(micros());

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}
void callback(char* topic, byte* payload, unsigned int length) { 
  unsigned long currentMillis = millis();
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("]");

   // Créer une chaîne de caractères à partir du payload
  char message[length + 1]; // +1 pour le caractère nul
  for (int i = 0; i < length; i++) {
    message[i] = (char)payload[i];
  }
  message[length] = '\0'; // Terminer la chaîne

   if (strcmp(topic,"ledcontrol")==0){
    if ((char)payload[0] == '1') {
        digitalWrite(led, HIGH);}
    else if ((char)payload[0] == '0') {
        digitalWrite(led, LOW);}} 

  else if (strcmp(topic, "buzzer") == 0) {
      if ((char)payload[0] == '1') {
        digitalWrite(buzzer, HIGH);
        tone(buzzer, 500,1000);}
      else if ((char)payload[0] == '0') {
        digitalWrite(buzzer, LOW);}} 
  else if (strcmp(topic, "jardin/weather") == 0) {
    String etat_pompe="OFF";
    // Comparaison de la chaîne "Rain"
      if (strcmp((char*)message, "Rain") == 0) {
        digitalWrite(pompe, LOW);}
      else {
        if (currentMillis - previousMillis >= interval) {
    // Lancer la pompe d'eau toutes les 24heures
        previousMillis = currentMillis;  // Mettre à jour le dernier temps où l'action a été effectuée
        digitalWrite(pompe, HIGH);
        etat_pompe="ON";
        }
        else{
          digitalWrite(pompe,LOW);
        }}
        client.publish("etat_pompe",etat_pompe.c_str());}

  Serial.println();
}

void reconnect() { 
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    String clientId = "ESP32Client-";
    clientId += String(random(0xffff), HEX);

    if (client.connect(clientId.c_str())) {
      Serial.println("Connected");
    client.subscribe("buzzer") ;
    client.subscribe("jardin/weather");
    client.subscribe("ledcontrol");
    } 
    else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }}
}