#define SER_INPUT_SIZE 70
char serBuffer[SER_INPUT_SIZE + 1];    // Serial Input-Buffer
int serBufferCount;    // Anzahl der eingelesenen Zeichen

void serialEvent() {
  char ch = Serial.read();
  serBuffer[serBufferCount] = ch;
  serBufferCount++;

  if (ch == 13 || ch == 10) { // ASCII code 13 = "CR",  10 = "LF"
    serBuffer[serBufferCount] = '\0'; // string nullterminieren
    Serial.print("serial cmd: ");
    Serial.println(serBuffer);
    strcpy(cmdPayload,serBuffer);
    cmdInQueue=true;
    evalCmd();
    serBufferCount = 0;
  }
}



void evalCmd() {
  if (cmdInQueue) {

    //Serial.print("cmdPayload: ");
    //Serial.println(cmdPayload);
    
    if (strncmp(cmdPayload, "toggle ", 7) == 0) {
      char inValue[1];
      inValue[0] = (char)cmdPayload[7];
      int relnr = atoi(inValue);
      if (relnr > 0 && relnr <= RELAIS_COUNT) {
        lastSwitchSource[relnr] = 1;
        relaisToggle(relnr - 1);
      }
    }

    else if (strncmp(cmdPayload, "on ", 3) == 0) {
      char inValue[1];
      inValue[0] = (char)cmdPayload[3];
      int relnr = atoi(inValue);
      if (relnr > 0 && relnr <= RELAIS_COUNT) {
        lastSwitchSource[relnr] = 1;
        relaisOn(relnr - 1);
      }
    }

    else if (strncmp(cmdPayload, "off ", 4) == 0) {
      char inValue[1];
      inValue[0] = (char)cmdPayload[4];
      int relnr = atoi(inValue);
      if (relnr > 0 && relnr <= RELAIS_COUNT) {
        lastSwitchSource[relnr] = 1;
        relaisOff(relnr - 1);
      }
    }

    else if (strncmp(cmdPayload, "set ", 4) == 0) {
      if (strncmp(cmdPayload, "set mqtthost ", 13) == 0) {
        char buf[50];
        int len = strlen(cmdPayload) - 13;
        for (int i=0; i < len; i++) {
          buf[i] = cmdPayload[i + 13];
        }
        buf[len-1]='\0';
        Serial.print("MQTT host: '");
        Serial.print(buf);
        Serial.println("' set");
      }
      else if (strncmp(cmdPayload, "set mqttport ", 13) == 0) {
        char buf[50];
        int len = strlen(cmdPayload) - 13;
        for (int i=0; i < len; i++) {
          buf[i] = cmdPayload[i + 13];
        }
        buf[len-1]='\0';
        Serial.print("MQTT port: '");
        Serial.print(buf);
        Serial.println("' set");
      }
      else if (strncmp(cmdPayload, "set wifissid ", 13) == 0) {
        char buf[50];
        int len = strlen(cmdPayload) - 13;
        for (int i=0; i < len; i++) {
          buf[i] = cmdPayload[i + 13];
        }
        buf[len-1]='\0';
        Serial.print("WiFi SSID: '");
        Serial.print(buf);
        Serial.println("' set");
      }
      else if (strncmp(cmdPayload, "set wifipass ", 13) == 0) {
        char buf[50];
        int len = strlen(cmdPayload) - 13;
        for (int i=0; i < len; i++) {
          buf[i] = cmdPayload[i + 13];
        }
        buf[len-1]='\0';
        Serial.print("WiFi Password: '");
        Serial.print(buf);
        Serial.println("' set");
      }
    }
    else if (strncmp(cmdPayload, "restart", 7) == 0) {
      Serial.print("restarting...");
      ESP.restart();
    }

    

    cmdInQueue = false;
  }
}