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

#include "config.h"
const char* password = "....................................";
const char* MQTT_BROKER = "10.1.3.252";

IPAddress dns(10, 1, 3, 236);
IPAddress gateway(10, 1, 3, 236);
IPAddress subnet(255, 255, 255, 0);

WiFiClient espClient;
PubSubClient client(espClient);

unsigned long lastMsg = 0;
char msg[50];
int value = 0;

// Hilfsvariablen Output

volatile byte value_14 = LOW;
volatile byte value_13 = LOW;

// Hilfsvariablen Differenz zu IPS

volatile byte ChangeIPS = LOW;
volatile byte valueIPS_13 = LOW;
volatile byte valueIPS_14 = LOW;

boolean eingang1 = 0;
boolean eingang2 = 0; 

char string_ON[] = "ON";
char string_OFF[] = "OFF";

void setup() {
    Serial.begin(115200);
    setup_wifi();
    client.setServer(MQTT_BROKER, 1024);
    client.setCallback(callback);
    client.subscribe("MQTT-Doppelschalter/Power1");
    client.subscribe("MQTT-Doppelschalter/Power2");
    client.subscribe("MQTT-Doppelschalter/Status");
    
      // Ein-/Ausgaenge definieren
  pinMode(14, OUTPUT);
  pinMode(13, OUTPUT);

  pinMode(12, INPUT);
  pinMode(10, INPUT);

}
 
void setup_wifi() {
  WiFi.disconnect();
  WiFi.setAutoConnect(false);
  WiFi.mode(WIFI_STA);
  WiFi.config(ip, dns, gateway, subnet);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(100);
    Serial.print(".");
  }
  //   Serial.println("bin da 3");
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.println(Node_Name);
}
void callback(char* topic, byte* payload, unsigned int length) {
    Serial.print("Received message [");
    Serial.print(topic);
    Serial.print("] ");
    char msg[length+1];
    for (int i = 0; i < length; i++) {
        Serial.print((char)payload[i]);
        msg[i] = (char)payload[i];
    }
    Serial.println();
 
    msg[length] = '\0';
    Serial.println(msg);
 
    if(strcmp(msg,"ON")==0){
        digitalWrite(13, HIGH);
    }
    else if(strcmp(msg,"OFF")==0){
        digitalWrite(13, LOW);
    }
} 
void reconnect() {
    while (!client.connected()) {
        Serial.print("Reconnecting...");
        if (!client.connect("ESP8266Client")) {
            Serial.print("failed, rc=");
            Serial.print(client.state());
            Serial.println(" retrying in 5 seconds");
            delay(5000);
        }
    }
}
void loop() {
 
    if (!client.connected()) {
        reconnect();
    }
    client.loop();
 
    snprintf (msg, 50, "Alive since %ld milliseconds", millis());
//    Serial.print("Publish message: ");
//    Serial.println(msg);
    
    snprintf (msg, 50, "");
//    Serial.println(msg);
    strcat(msg, "{\"Switch1\":\"");
    strcat(msg, string_ON);
    strcat(msg, "\",\"Switch2\":\"");
    strcat(msg, string_OFF);
    strcat(msg, "\"}");
 //       Serial.println(msg);
    client.publish("MQTT-Doppelschalter/Power1",string_ON);
    client.publish("MQTT-Doppelschalter/Power2",string_OFF);
    client.publish("MQTT-Doppelschalter/Status",msg);
    delay(5000);
}