// #include "arduino_secrets.h"
#include <WiFi.h>
#include <PubSubClient.h>

#include <DHT.h>


// Add your MQTT Broker IP address, example:
// const char* mqtt_server = "172.16.25.57";
// const char* mqtt_server = "192.168.100.14";
//const char* mqtt_server = "test.mosquitto.org";
// const char* mqtt_server = "broker.emqx.io";
const char* mqtt_server = "mqtt.eclipseprojects.io";


#define DHTPIN 32     // Digital pin connected to the DHT sensor
// Uncomment the type of sensor in use:
// #define DHTTYPE    DHT11     // DHT 11
// #define DHTTYPE    DHT22     // DHT 22 (AM2302)
#define DHTTYPE    DHT21     // DHT 21 (AM2301)

DHT dht(DHTPIN, DHTTYPE);

WiFiClient espClient;
PubSubClient client(espClient);
long lastMsg = 0;
char msg[50];
int value = 0;
int connT=0;
float temperature = 0;
float humidity = 0;

const char* ssid = "Wokwi-GUEST";
const char* password = "";
// const char* ssid = "HUTABARAT";
// const char* password = "1234barat";

// LED Pin
const int ledPin1 = 14;
const int ledPin2 = 12;
const int ledPin3 = 13;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  delay(2000);

  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  dht.begin();


}

void loop() {
  // put your main code here, to run repeatedly:
  if (!client.connected()) {
    Serial.println("reconnect");
    reconnect();
  }
  client.loop();
  long now = millis();
  if (now - lastMsg > 15000) {
    lastMsg = now;
    
    float t = dht.readTemperature();Serial.println(t);
    float h = dht.readHumidity();Serial.println(h);  
    // Uncomment the next line to set temperature in Fahrenheit 
    // (and comment the previous temperature line)
    //temperature = 1.8 * bme.readTemperature() + 32; // Temperature in Fahrenheit
    
    // Convert the value to a char array
    char tempString[8];
    dtostrf(t, 1, 2, tempString);
    // Serial.print("Temperature: ");Serial.println(tempString);
    client.publish("esp32/sensor01/temperature", tempString);
    // sDatang(tempString);//delay(500);

    humidity = analogRead(35);
    
    // Convert the value to a char array
    char humString[8];
    dtostrf(h, 1, 2, humString);
    // Serial.print("Humidity: ");Serial.println(humString);
    client.publish("esp32/sensor01/humidity", humString);
    // sDatang(humString);//delay(500);


  }

}

void setup_wifi() {
  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");delay(500);
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
    connT++;
    if(connT>=10){
      ESP.restart();
    }
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  delay(500);
}

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

  // Feel free to add more if statements to control more GPIOs with MQTT

  // If a message is received on the topic esp32/output, you check if the message is either "on" or "off". 
  // Changes the output state according to the message
  if (String(topic) == "esp32/sensor01/output1") {
    Serial.print("Changing output to ");
    if(messageTemp == "on"){
      Serial.println("on");
      digitalWrite(ledPin1, HIGH);
    }
    else if(messageTemp == "off"){
      Serial.println("off");
      digitalWrite(ledPin1, LOW);
    }
  }
  if (String(topic) == "esp32/sensor01/output2") {
    Serial.print("Changing output to ");
    if(messageTemp == "on"){
      Serial.println("on");
      digitalWrite(ledPin2, HIGH);
    }
    else if(messageTemp == "off"){
      Serial.println("off");
      digitalWrite(ledPin2, LOW);
    }
  }

  if (String(topic) == "esp32/sensor01/output3") {
    Serial.print("Changing output to ");
    if(messageTemp == "on"){
      Serial.println("on");
      digitalWrite(ledPin3, HIGH);
    }
    else if(messageTemp == "off"){
      Serial.println("off");
      digitalWrite(ledPin3, LOW);
    }
    }

}

void reconnect() {
  // Loop until we're reconnected
   Serial.println("Reconnect MQTT");
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect("sensor02")) {
      Serial.println("connected");
      // Subscribe
      client.subscribe("esp32/sensor01/output1");
      client.subscribe("esp32/sensor01/output2");
      client.subscribe("esp32/sensor01/output3");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}