#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include "DHTesp.h"

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

// Remplace par l'IP de ta machine ou un lien ngrok
const char* serverBaseUrl = "http://10.144.39.70:5000";
const char* uploadUrl = "http://10.144.39.70:5000/upload";
const char* ledUrl = "http://10.144.39.70:5000/led";

const int DHT_PIN = 15;
const int LED_PIN = 2;

DHTesp dhtSensor;
unsigned long lastSend = 0;
const unsigned long sendInterval = 10000; // 10 secondes
unsigned long lastLedCheck = 0;
const unsigned long ledCheckInterval = 3000; // toutes les 3 secondes

void connectWiFi() {
  Serial.println();
  Serial.print("Connexion au WiFi");
  WiFi.begin(ssid, password);

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

  Serial.println();
  Serial.println("WiFi connecté");
  Serial.print("Adresse IP : ");
  Serial.println(WiFi.localIP());
}

void sendSensorData(float temperature, float humidity) {
  if (WiFi.status() != WL_CONNECTED) {
    Serial.println("WiFi non connecté. Envoi annulé.");
    return;
  }

  HTTPClient http;
  http.begin(uploadUrl);
  http.addHeader("Content-Type", "application/json");

  StaticJsonDocument<200> doc;
  doc["temperature"] = temperature;
  doc["humidity"] = humidity;

  String payload;
  serializeJson(doc, payload);

  Serial.print("Envoi JSON : ");
  Serial.println(payload);

  int httpResponseCode = http.POST(payload);
  Serial.print("Code HTTP : ");
  Serial.println(httpResponseCode);

  if (httpResponseCode > 0) {
    String response = http.getString();
    Serial.println("Réponse serveur :");
    Serial.println(response);
  } else {
    Serial.print("Erreur HTTP : ");
    Serial.println(http.errorToString(httpResponseCode));
  }

  http.end();
}

void syncLedState() {
  if (WiFi.status() != WL_CONNECTED) {
    return;
  }

  HTTPClient http;
  http.begin(ledUrl);
  int httpResponseCode = http.GET();

  if (httpResponseCode > 0) {
    String response = http.getString();

    StaticJsonDocument<200> doc;
    DeserializationError error = deserializeJson(doc, response);

    if (!error) {
      bool ledEnabled = doc["enabled"] | false;
      digitalWrite(LED_PIN, ledEnabled ? HIGH : LOW);
      Serial.print("Etat LED synchronisé : ");
      Serial.println(ledEnabled ? "ON" : "OFF");
    } else {
      Serial.println("Erreur parsing JSON LED");
    }
  }

  http.end();
}

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  connectWiFi();
}

void loop() {
  if (millis() - lastSend >= sendInterval) {
    lastSend = millis();

    TempAndHumidity data = dhtSensor.getTempAndHumidity();

    if (isnan(data.temperature) || isnan(data.humidity)) {
      Serial.println("Erreur lecture DHT22");
    } else {
      Serial.print("Température : ");
      Serial.print(data.temperature);
      Serial.print(" °C | Humidité : ");
      Serial.print(data.humidity);
      Serial.println(" %");

      sendSensorData(data.temperature, data.humidity);
    }
  }

  if (millis() - lastLedCheck >= ledCheckInterval) {
    lastLedCheck = millis();
    syncLedState();
  }
}