#include <DHT.h>
#include <ESP8266WiFi.h>
#include <PubSubClient.h>

#define DHTPIN 5
#define DHTTYPE DHT11
#define MSG_BUFFER_SIZE (50)

DHT dht(DHTPIN, DHTTYPE);

const char* ssid = "Babyshark AIS5G";
const char* password = "0966697756";
const char* mqtt_server = "mqtt-dashboard.com";

WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;

char msg[MSG_BUFFER_SIZE];
int value = 0;

void setup_wifi() {
  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

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

  Serial.println();
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();

  // Check if the message is for the "dewdewbearr" topic
  if (String(topic) == "dewdewbearr") {
    // Control LED based on the received payload
    if ((char)payload[0] == '1') {
      digitalWrite(4, HIGH); // Use GPIO4 instead of D2
    } else if ((char)payload[0] == '0') {
      digitalWrite(4, LOW);  // Use GPIO4 instead of D2
    }
  }
}

void reconnect() {
  // Loop until reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);

    if (client.connect(clientId.c_str())) {
      Serial.println("connected");
      client.publish("dewdewbear", "hello world");
      client.subscribe("dewdewbearr");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}

void setup() {
  pinMode(4, OUTPUT); // Use GPIO4 instead of D2
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  dht.begin();
}

void loop() {
  // Read humidity and temperature
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Check if the readings are valid
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Temperature = ");
  Serial.print(t);
  Serial.println(" °C");
  delay(1000);

  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  // Prepare and publish the temperature message
  String test = "Temperature: " + String(t) + " °C";
  Serial.print("Publish message: ");
  Serial.println(test);
  client.publish("dewdewbear", test.c_str());
}