/**
   ESP32 + DHT22 Example for Wokwi
   const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
   https://wokwi.com/arduino/projects/322410731508073042
*/

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

const int DHT_PIN = 15;
const int LED_PIN = 13;
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const char* THINGSBOARD_SERVER = "demo.thingsboard.io";
const char* ACCESS_TOKEN = "eb0s7XF0mzOpNw3FjRqU";

DHTesp dhtSensor;
WiFiClient client;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LED_PIN, OUTPUT);
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  // Create JSON payload
  String payload = "{\"temperature\":" + String(data.temperature, 2) + ",\"humidity\":" + String(data.humidity, 1) + "}";

  // Send HTTP POST request to ThingsBoard
  sendTelemetry(payload);

  // Blink LED if temperature or humidity is outside of specified range
  if (data.temperature > 35 || data.temperature < 12 || data.humidity > 70 || data.humidity < 40) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }

  delay(10000); // Adjust delay as needed
}

void sendTelemetry(String payload) {
  if (client.connect(THINGSBOARD_SERVER, 80)) {
    client.print("POST /api/v1/");
    client.print(ACCESS_TOKEN);
    client.println("/telemetry HTTP/1.1");
    client.println("Host: demo.thingsboard.io");
    client.println("Content-Type: application/json");
    client.print("Content-Length: ");
    client.println(payload.length());
    client.println();
    client.println(payload);
    Serial.println("Telemetry sent to ThingsBoard: " + payload);
  } else {
    Serial.println("Connection to ThingsBoard failed");
  }
  client.stop();
}