#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <ThingSpeak.h>

const char* WIFI_SSID = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int LDR_PIN = A0;
const int RELAY_PIN = 5;
const char* myApiKey = "QI4B66GQDQ2IY2LX";
const int myChannelNumber = 2551447;

AsyncWebServer server(80);
WiFiClient wifiClient;

void handleRoot(AsyncWebServerRequest *request) {
  int ldrValue = analogRead(LDR_PIN);
  String message = "LDR Value: " + String(ldrValue);
  request->send(200, "text/html", message);
}

void setup() {
  Serial.begin(115200);

  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  server.on("/", HTTP_GET, handleRoot);
  server.begin();

  ThingSpeak.begin(wifiClient);
}

void loop() {
  int ldrValue = analogRead(LDR_PIN);

  if (ldrValue > 500) {
    digitalWrite(RELAY_PIN, HIGH); // Allume la lumière
    Serial.println("Lumière allumée");
  } else {
    digitalWrite(RELAY_PIN, LOW); // Éteint la lumière
    Serial.println("Lumière éteinte");
  }

  ThingSpeak.setField(1, ldrValue);
  int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);
  
  if (x == 200) {
    Serial.println("Données envoyées avec succès");
  } else {
    Serial.println("Erreur d'envoi : " + String(x));
  }

  delay(10000);
}