#include <WiFi.h>
#include <WiFiClient.h>
#include <DHT.h>

#define DHTPIN 15
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

const char* ssid     = "Wokwi-GUEST";
const char* password = "";
const char* host     = "density-unexpired-respect.ngrok-free.dev";
const int   port     = 80;
const char* path     = "/upload";

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

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

void loop() {
  if (WiFi.status() != WL_CONNECTED) {
    Serial.println(" WiFi perdu, reconnexion...");
    WiFi.reconnect();
    delay(3000);
    return;
  }

  float temperature = dht.readTemperature();
  float humidity    = dht.readHumidity();

  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Erreur DHT !");
    delay(2000);
    return;
  }

  Serial.printf("🌡️ Temp: %.1f°C | 💧 Humidité: %.1f%%\n", temperature, humidity);

  WiFiClient client;
  if (!client.connect(host, port)) {
    Serial.println("Impossible de se connecter !");
    delay(5000);
    return;
  }

  String jsonData = "{\"temperature\":" + String(temperature, 1) +
                    ",\"humidity\":"    + String(humidity, 1)    + "}";

  client.println("POST " + String(path) + " HTTP/1.1");
  client.println("Host: " + String(host));
  client.println("Content-Type: application/json");
  client.println("ngrok-skip-browser-warning: true");
  client.println("User-Agent: ESP32-IoT/1.0");
  client.println("Content-Length: " + String(jsonData.length()));
  client.println("Connection: close");
  client.println();
  client.print(jsonData);

  Serial.println(" Envoyé : " + jsonData);

  String response = "";
  unsigned long t = millis();
  while (client.connected() && millis() - t < 5000) {
    if (client.available()) {
      response += client.readStringUntil('\n');
      t = millis();
    }
  }
  client.stop();

  Serial.println(" Réponse : " + response.substring(0, 200));

  if (response.indexOf("LED_OFF") >= 0)
    Serial.println(" LED éteinte sur le dashboard !");
  else if (response.indexOf("\"OK\"") >= 0)
    Serial.println(" Données acceptées !");

  delay(10000);
}