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

const char* ssid = "";
const char* password =  "";
const char* mqttServer = "m14.cloudmqtt.com";
const int mqttPort = 13478;
const char* mqttUser = "bcmjhxsk";
const char* mqttPassword = "uZlBsAzla_Cp";
char message;


WiFiClient espClient;
PubSubClient client(espClient);

void setup() {

 Serial.begin(115200);
pinMode(LED_BUILTIN, OUTPUT);
 digitalWrite(LED_BUILTIN, HIGH);
 WiFi.begin(ssid, password);


 while (WiFi.status() != WL_CONNECTED) {
   delay(500);
   Serial.println("Connecting to WiFi..");
 }
 Serial.println("Connected to the WiFi network");
 digitalWrite(LED_BUILTIN, LOW);
 delay(500);
 digitalWrite(LED_BUILTIN, HIGH);
 delay(500);
 digitalWrite(LED_BUILTIN, LOW);
 delay(500);
 digitalWrite(LED_BUILTIN, HIGH);
 delay(1000);
 client.setServer(mqttServer, mqttPort);
 client.setCallback(callback);

 while (!client.connected()) {
   Serial.println("Connecting to MQTT...");

   if (client.connect("ESP8266Client2", mqttUser, mqttPassword )) {

     Serial.println("connected");
 digitalWrite(LED_BUILTIN, LOW);
 delay(100);
 digitalWrite(LED_BUILTIN, HIGH);
 delay(100);
 digitalWrite(LED_BUILTIN, LOW);
 delay(100);
 digitalWrite(LED_BUILTIN, HIGH);
 delay(100);
 digitalWrite(LED_BUILTIN, LOW);
 delay(100);
 digitalWrite(LED_BUILTIN, HIGH);
 delay(100);
 digitalWrite(LED_BUILTIN, LOW);
  delay(100);
 digitalWrite(LED_BUILTIN, HIGH);
   } else {

     Serial.print("failed with state ");
     Serial.print(client.state());
     delay(2000);

   }
 }

 client.publish("esp/test", "Hello from ESP8266");
 client.subscribe("esp/test");

}



void loop() {
 client.loop();
}


void callback(char* topic, byte* payload, unsigned int length) {

 Serial.print("Message arrived in topic: ");
 Serial.println(topic);

 Serial.print("Message:");
 for (int i = 0; i < length; i++) {
   Serial.print((char)payload[i]);
   message = payload[i];
 }

 Serial.println();
 Serial.println("-----------------------");
doWhenR();
}




void doWhenR(){

if( message ==  '0' ){
Serial.println("Släck");
digitalWrite(LED_BUILTIN, LOW);
digitalWrite(LED_BUILTIN, HIGH);
}

if( message ==  '1' ){
Serial.println("Tänd");
digitalWrite(LED_BUILTIN, LOW);
}


}