#include <WiFi.h>
#include <PubSubClient.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "kailaerb.cloud.shiftr.io";
const char* mqtt_user = "public";
const char* mqtt_pass = "public";
const char* CL;
const char* mqttTopic = "LBCMH/1";

byte mac[6];
String MACAddress;
uint8_t MAC_array[6];
char MAC_char[18];
WiFiClient espClient;
PubSubClient client(espClient);


void printMACAddress() {
  WiFi.macAddress(mac);
  MACAddress = mac2String(mac);
  Serial.println(MACAddress);
}

void setup_wifi() {
  pinMode(19, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(22, OUTPUT);
  pinMode(23, OUTPUT);

  delay(10);
  // We start by connecting to a WiFi network
  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());
}

String mac2String(byte ar[]) {
  String s;
  for (byte i = 0; i < 6; ++i) {
    char buf[3];
    sprintf(buf, "%2X", ar[i]);
    s += buf;
    if (i < 5) s += ':';
  }
  return s;
}

void callback(char* topic, byte* payload, unsigned int length) {
  // Create a String object from the payload
  String message = "";
  for (unsigned int i = 0; i < length; i++) {
    message += (char)payload[i];
  }

  if(message == "RedOn") {
    digitalWrite(18, HIGH);
  } else if(message == "GreenOn") {
    digitalWrite(19, HIGH);
  } else if (message == "BlueOn") {
    digitalWrite(21, HIGH);
  } else if(message == "YellowOn") {
    digitalWrite(22, HIGH);
  } else if (message == "PinkOn") {
    digitalWrite(23, HIGH);
  } else if(message == "RedOff") {
    digitalWrite(18, LOW);
  } else if(message == "GreenOff") {
    digitalWrite(19, LOW);
  } else if (message == "BlueOff") {
    digitalWrite(21, LOW);
  } else if(message == "YellowOff") {
    digitalWrite(22, LOW);
  } else if (message == "PinkOff") {
    digitalWrite(23, LOW);
  } else if(message == "AllOn") {
    digitalWrite(19, HIGH);
    digitalWrite(18, HIGH);
    digitalWrite(21, HIGH);
    digitalWrite(22, HIGH);
    digitalWrite(23, HIGH);
  } else if(message == "AllOff") {
    digitalWrite(19, LOW);
    digitalWrite(18, LOW);
    digitalWrite(21, LOW);
    digitalWrite(22, LOW);
    digitalWrite(23, LOW);
  } else {
    Serial.println("Perintah Salah!!");
  }
  
  // Print the received message
  Serial.println(message);
}

void reconnect() {
  // Loop until we're reconnected
  printMACAddress();
  const char* CL;
  CL = MACAddress.c_str();
  Serial.println(CL);
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect(CL, mqtt_user, mqtt_pass)) {
      Serial.println("connected");
      client.subscribe(mqttTopic);
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      ESP.restart();
      delay(5000);
    }
  }
}

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

  setup_wifi();

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

void loop() {
  {
    String pubmsg = "";
    if (!client.connected()) {
      reconnect();
    }
    client.loop();
  }
}