#include <ESP32Servo.h>

Servo myservo;  // create servo object to control a servo
                // 16 servo objects can be created on the ESP32
int servoPin = 4;
int led=2;
int pos = 0;    // variable to store the servo position



#define LDR 15     // Digital pin connected to the DHT sensor

////////////////////////////////////////////////////////////////////////////////

/*
   Virtuino MQTT getting started example
   Broker: HiveMQ (Secure connection)
   https://www.hivemq.com/ 
*/

#ifdef ESP8266
#include <ESP8266WiFi.h>  // Pins for board ESP8266 Wemos-NodeMCU
#else
#include <WiFi.h>
#endif

#include <PubSubClient.h>
#include <WiFiClientSecure.h>

#define ssid "Wokwi-GUEST"
#define password ""

//---- MQTT Broker settings
const char* mqtt_server = "5c2e9d64e4134e70b4574080c70c55d3.s1.eu.hivemq.cloud"; // replace with your broker url
const char* mqtt_username = "Boiko";  // you don't need the username and password for public connection
const char* mqtt_password = "Bo1ko_21";
const int mqtt_port = 8883;

WiFiClientSecure espClient;   // for no secure connection use WiFiClient instead of WiFiClientSecure
//WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;

#define MSG_BUFFER_SIZE  (50)
char msg[MSG_BUFFER_SIZE];

int sensor1 = 0;
float sensor2 = 0;
int command1 = 0;
int command2 = 0;

const char* sensor1_topic = "sensor1";
const char*  sensor2_topic = "sensor2";
//const char*  sensor2_topic="sensor3";

const char* command1_topic = "command1";
const char* command2_topic = "command2";

//////////////////////////////////////////
static const char *root_ca PROGMEM = R"EOF(
-----BEGIN CERTIFICATE-----
MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4
WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu
ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY
MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc
h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+
0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U
A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW
T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH
B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC
B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv
KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn
OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn
jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw
qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI
rU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNV
HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq
hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL
ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ
3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK
NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5
ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur
TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC
jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc
oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq
4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA
mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d
emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc=
-----END CERTIFICATE-----
)EOF";

//==========================================

//=====================================
void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    String clientId = "ESP8266Client-";   // Create a random client ID
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str(), mqtt_username, mqtt_password)) {
      Serial.println("connected");

      client.subscribe(command1_topic);   // *********subscribe the topics here
      client.subscribe(command2_topic);   // *********subscribe the topics here
      
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");   // Wait 5 seconds before retrying
      delay(5);
    }
  }
}

//================================================ setup
//================================================
void setup() {
  Serial.begin(9600);
  while (!Serial) delay(1);
  setup_wifi();
  pinMode(2, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  {
     if (analogRead( LDR) < 800) digitalWrite(led, HIGH);
//если показатель освещенности меньше 800, включаем светодиод
else digitalWrite(led, LOW); //иначе выключаем
     }
  #ifdef ESP8266
    espClient.setInsecure();
  #else   // for the ESP32
    espClient.setCACert(root_ca);      // enable this line and the the "certificate" code for secure connection
  #endif
  
  client.setServer(mqtt_server, mqtt_port);
  client.setCallback(callback);
   ///////////////////////////////////////

  
   myservo.attach(servoPin);
}

//================================================

void loop() {
  if (!client.connected()) reconnect();
  client.loop();
  //---- example: how to publish sensor values every 5 sec
  unsigned long now = millis();
  if (now - lastMsg > 500) {  // *10
    lastMsg = now;
   
  
    myservo.write(pos);  
    
  }
}

//=======================================  
// This void is called every time we have a message from the broker

void callback(char* topic, byte* payload, unsigned int length) {
  String incommingMessage = "";

  for (int i = 0; i < length; i++) incommingMessage+=(char)payload[i];
    ////////////////////////////////////////////////
  Serial.println("Message arrived ["+String(topic)+"]"+incommingMessage);
  
  //--- check the incomming message
    if( strcmp(topic,command1_topic) == 0){
     if (incommingMessage.equals("0")) digitalWrite(2, LOW);   // Turn the LED on 
     else digitalWrite(2, HIGH);  // Turn the LED off 
  }

   if( strcmp(topic,command2_topic) == 0){
      pos =  incommingMessage.toInt(); 
   }  
 
}

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

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

while (WiFi.status() != WL_CONNECTED) {
    delay(50);
    Serial.print(".");
  }
  randomSeed(micros());
  Serial.println("\nWiFi connected\nIP address: ");
  Serial.println(WiFi.localIP());
}
///////////////////////////////////////////////////


//======================================= publising as string
void publishMessage(const char* topic, String payload , boolean retained){
  if (client.publish(topic, payload.c_str(), true))
      Serial.println("Message publised ["+String(topic)+"]: "+payload);
}