// #include <WiFi.h>
// #include <PubSubClient.h>
// #include "DHTesp.h"
// #include <ESP32Servo.h>

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

// // MQTT
// const char* mqtt_server = "broker.mqttdashboard.com";

// const char* SUBTOPIC_LED = "esp32-dht22/LED";
// const char* SUBTOPIC_DOOR = "esp32-dht22/DOOR";
// const char* SUBTOPIC_TEMP = "esp32-dht22/Temp";
// const char* SUBTOPIC_HUMIDITY = "esp32-dht22/Humidity";

// WiFiClient espClient;
// PubSubClient client(espClient);

// // LED
// const int LED_PIN = 13;

// // DHT
// const int DHT_PIN = 15;
// DHTesp dhtSensor;

// // Servo
// Servo servo;  // create servo object to control a servo

// int SERVO_PIN = 2;  // analog pin used to connect the potentiometer

// void setup_wifi() {
//   delay(10);
//   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.print("IP address: ");
//   Serial.println(WiFi.localIP());
// }

// void reconnect() {
//   while (!client.connected()) {
//     Serial.println("Attempting MQTT connection...");
//     String clientId = "esp32-dht22-clientId-";
//     clientId += String(random(0xffff), HEX);
//     if (client.connect(clientId.c_str())) {
//       Serial.println("Connected");
//       client.subscribe(SUBTOPIC_LED);
//       client.subscribe(SUBTOPIC_DOOR);
//     } else {
//       delay(5000);
//     }
//   }
// }

// void callback(char *topic, byte *payload, unsigned int length) {
//   Serial.print("Receive Topic: ");
//   Serial.println(topic);

//   Serial.print("Payload: ");
//   Serial.println((char *)payload);
//   if (!strcmp(topic, SUBTOPIC_LED)) {
//     if (!strncmp((char *)payload, "on", length)) {
//       digitalWrite(LED_PIN, HIGH);
//     } else if (!strncmp((char *)payload, "off", length)) {
//       digitalWrite(LED_PIN, LOW);
//     }
//   } else if (!strcmp(topic, SUBTOPIC_DOOR)) {
//     if (!strncmp((char *)payload, "on", length)) {
//       servo.write(90);
//     } else if (!strncmp((char *)payload, "off", length)) {
//       servo.write(0);
//     }
//   }
// }

// void setup() {
//   Serial.begin(115200);
//   randomSeed(micros());

//   pinMode(LED_PIN, OUTPUT);

//   dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

//   servo.attach(SERVO_PIN, 500, 2400);  // attaches the servo on pin 13 to the servo object
  
//   servo.write(0);

//   setup_wifi();
//   client.setServer(mqtt_server, 1883);
//   client.setCallback(callback);
// }

// float old_temperature = 0;
// float old_humidity = 0;

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

//   TempAndHumidity  data = dhtSensor.getTempAndHumidity();
//   float temperature = data.temperature;
//   float humidity = data.humidity;
//   // Serial.println("Temp: " + String(temperature, 2) + "°C");
//   // Serial.println("Humidity: " + String(humidity, 1) + "%");

//   if (old_temperature != temperature) {
//     client.publish(SUBTOPIC_TEMP, String(temperature, 2).c_str());
//   }
//   old_temperature = temperature;

//   if (old_humidity != humidity) {
//     client.publish(SUBTOPIC_HUMIDITY, String(humidity, 1).c_str());
//   }
//   old_humidity = humidity;

//   // Serial.println("---");
//   delay(1000);
// }



#include <WiFi.h>
#include <PubSubClient.h>
#include "DHTesp.h"
#include <ESP32Servo.h>

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

// MQTT
const char* mqtt_server = "broker.mqttdashboard.com";

const char* SUBTOPIC_LED = "esp32-dht22/LED";
const char* SUBTOPIC_DOOR = "esp32-dht22/DOOR";
const char* SUBTOPIC_TEMP = "esp32-dht22/Temp";
const char* SUBTOPIC_HUMIDITY = "esp32-dht22/Humidity";

WiFiClient espClient;
PubSubClient client(espClient);

// LED
const int LED_PIN = 13;

// DHT
const int DHT_PIN = 15;
DHTesp dhtSensor;

// Servo
Servo servo;  // create servo object to control a servo

int SERVO_PIN = 2;  // analog pin used to connect the potentiometer

void setup_wifi() {
  delay(10);
  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.print("IP address: ");
  Serial.println(WiFi.localIP());
}

void reconnect() {
  while (!client.connected()) {
    Serial.println("Attempting MQTT connection...");
    String clientId = "esp32-dht22-clientId-";
    clientId += String(random(0xffff), HEX);
    if (client.connect(clientId.c_str())) {
      Serial.println("Connected");
      client.subscribe(SUBTOPIC_LED);
      client.subscribe(SUBTOPIC_DOOR);
    } else {
      delay(5000);
    }
  }
}

void callback(char *topic, byte *payload, unsigned int length) {
  Serial.print("Receive Topic: ");
  Serial.println(topic);

  Serial.print("Payload: ");
  Serial.println((char *)payload);
  if (!strcmp(topic, SUBTOPIC_LED)) {
    if (!strncmp((char *)payload, "on", length)) {
      digitalWrite(LED_PIN, HIGH);
    } else if (!strncmp((char *)payload, "off", length)) {
      digitalWrite(LED_PIN, LOW);
    }
  } else if (!strcmp(topic, SUBTOPIC_DOOR)) {
    if (!strncmp((char *)payload, "on", length)) {
      servo.write(90);
    } else if (!strncmp((char *)payload, "off", length)) {
      servo.write(0);
    }
  }
}

void setup() {
  Serial.begin(115200);
  randomSeed(micros());

  pinMode(LED_PIN, OUTPUT);

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

  servo.attach(SERVO_PIN, 500, 2400);  // attaches the servo on pin 13 to the servo object
  
  servo.write(0);

  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  String warning_temp_hight= "Attention! temp "+String(data.temperature) + String(" degrees");
  String warning_hum_hight= "Attention! hum "+String(data.humidity) + String(" degrees");

  if (data.temperature > 20){Serial.println(warning_temp_hight);
  client.publish(SUBTOPIC_TEMP, warning_temp_hight.c_str());} 
  // client.publish(SUBTOPIC_TEMP, warning_temp_hight.c_str());
  client.publish(SUBTOPIC_HUMIDITY, warning_hum_hight.c_str());
  delay(1000);
}