#include "DHT.h"
#include "ThingSpeak.h"
#include <WiFi.h>

const char * SSID = "Wokwi-GUEST";
const char * PASSWORD = "";

WiFiClient client;

unsigned long CHANNEL_ID = 2530784;
const char * API_KEY = "WJAV7NAGWCMMCYX1";

#define DHTTYPE DHT22   

const int DHT_PIN = 33;
const int LED_PIN = 4;
const int TEMP_THRESHOLD = 50;

DHT dht(DHT_PIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  WiFi.disconnect();
  WiFi.begin(SSID, PASSWORD);
  WiFi.mode(WIFI_STA);
  while (WiFi.status() != WL_CONNECTED) {
    delay(300);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("Wifi connected");
  Serial.println("IP address: " + String(WiFi.localIP()));
  Serial.println("");
  ThingSpeak.begin(client);

  dht.begin();

  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW);
} 

void loop() {
  delay(5000);

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

  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  if (temperature > TEMP_THRESHOLD) {
    digitalWrite(LED_PIN, HIGH);
  }
  else {
    digitalWrite(LED_PIN, LOW);
  }

  Serial.println("Temperature: " + String(temperature, 1) + "°C");
  Serial.println("Humidity: " + String(humidity, 1) + "%");

  ThingSpeak.setField(1, temperature);
  ThingSpeak.setField(2, humidity);

  int x = ThingSpeak.writeFields(CHANNEL_ID, API_KEY);

  if (x = 200) {
    Serial.println("Data pushed succesfull");
  }
  else {
    Serial.println("Push Error" + String(x));
  }
  Serial.println("============");
}