#define SER_INPUT_SIZE 70
char serBuffer[SER_INPUT_SIZE + 1];
int serBufferCount;

void serialEvent()
{
  char ch = Serial.read();
  serBuffer[serBufferCount] = ch;
  serBufferCount++;
  if (ch == 13 || ch == 10)
  { // ASCII code 13 = "CR",  10 = "LF"
    serBuffer[serBufferCount - 1] = '\0';
#ifdef DEBUG_VERBOSE
    Serial.print("serial cmd: '");
    Serial.print(serBuffer);
    Serial.println("'");
#endif
    strlcpy(cmdPayload, serBuffer, sizeof(cmdPayload));
    cmdInQueue = true;
    evalCmd();
    serBufferCount = 0;
  }
}

void evalCmd()
{
  if (cmdInQueue)
  {
    //Serial.print("cmdPayload: ");
    //Serial.println(cmdPayload);

    char cmdPayload_lower[sizeof(cmdPayload)];
    strlcpy(cmdPayload_lower, cmdPayload, sizeof(cmdPayload_lower));
    strlwr(cmdPayload_lower);

    if (strncmp(cmdPayload_lower, "loadconf", 8) == 0)
    {
      sendLog(F("loading config..."));
      loadConf_all();
    }

    else if (strncmp(cmdPayload_lower, "set ", 4) == 0)
    {
      char buf[81];
      char setconfCmd[16];

      uint8_t len = strlen(cmdPayload) - 4;
      for (unsigned char i = 0; i < len; i++)
      {
        if (i < (sizeof(buf) - 1))
          buf[i] = cmdPayload[i + 4];
      }
      if (len <= (sizeof(buf) - 1))
        buf[len] = '\0';
      else
        buf[(sizeof(buf) - 1)] = '\0';

#ifdef DEBUG_VERBOSE
      Serial.print("Buf: ");
      Serial.println(buf);
#endif

      bool cmdNoPayload = false;
      uint8_t setconfCmdLen = 0;
      for (unsigned char i = 0; i < len; i++)
      {
        //if (buf[i] == 32 || buf[i] == '\0') break; // if SPACE command name is finished, if \0 command parameter is missing
        if (buf[i] == 32 || buf[i] == 61 || buf[i] == 58)
          break; // if SPACE(32) or =(61) or :(58) command name is finished
        else if (buf[i] == 0 || buf[i] == 10 || buf[i] == 13)
        { // if \0, LF (10) or CR (13) command parameter is missing
          cmdNoPayload = true;
          break;
        }
        setconfCmd[i] = buf[i];
        setconfCmdLen++;
      }
      setconfCmd[setconfCmdLen] = '\0';
      yield();

      if (setconfCmdLen == len)
        cmdNoPayload = true;

#ifdef DEBUG_VERBOSE
      Serial.print("setconfCmd: '");
      Serial.print(setconfCmd);
      Serial.print("'");
#endif

      if (cmdNoPayload)
      {
#ifdef DEBUG_VERBOSE
        Serial.println(", no payload, displaying current value");
#endif
        //getConfig(setconfCmd);
        cmdPrintHelp();
      }
      else
      {
        char setconfPayload[62];
#ifdef DEBUG_VERBOSE
        Serial.println();
#endif
        int setconfPayloadLen = 0;
        for (int i = 0; i < len; i++)
        {
          char c = buf[i + setconfCmdLen + 1];
          if (c == 0 || c == 10 || c == 13)
            break; // if \0, LF (10) or CR (13) command parameter is finished
          setconfPayload[i] = c;
          setconfPayloadLen++;
        }
        setconfPayload[setconfPayloadLen] = '\0';

#ifdef DEBUG_VERBOSE
        Serial.print("setconfPayload: '");
        Serial.print(setconfPayload);
        Serial.println("'");
#endif

        char bufg[100];
        sprintf(bufg, "set '%s'->'%s'", setconfCmd, setconfPayload);
        sendLog(bufg, LOGLEVEL_VERBOSE);

        setConfig(setconfCmd, setconfPayload);
      }
    }

    else if (strncmp(cmdPayload_lower, "get ", 4) == 0)
    {
      char buf[81];
      char setconfCmd[16];

      uint8_t len = strlen(cmdPayload) - 4;
      for (int i = 0; i < len; i++)
      {
        if (i < 81)
          buf[i] = cmdPayload[i + 4];
      }
      if (len <= (sizeof(buf) - 1))
        buf[len] = '\0';
      else
        buf[(sizeof(buf) - 1)] = '\0';

#ifdef DEBUG_VERBOSE
      Serial.print("Buf: ");
      Serial.println(buf);
#endif

      uint8_t setconfCmdLen = 0;
      for (int i = 0; i < len; i++)
      {
        //if (buf[i] == 32 || buf[i] == '\0') break; // if SPACE command name is finished, if \0 command parameter is missing
        if (buf[i] == 32 || buf[i] == 61 || buf[i] == 58)
          break; // if SPACE(32) or =(61) or :(58) command name is finished
        else if (buf[i] == 0 || buf[i] == 10 || buf[i] == 13)
        { // if \0, LF (10) or CR (13) command parameter is missing
          break;
        }
        setconfCmd[i] = buf[i];
        setconfCmdLen++;
      }
      setconfCmd[setconfCmdLen] = '\0';
      yield();
#ifdef DEBUG_VERBOSE
      Serial.print("setconfCmd: '");
      Serial.print(setconfCmd);
      Serial.println("'");
#endif
      char bufg[50];
      sprintf(bufg, "get '%s'", setconfCmd);
      sendLog(bufg);
      getConfig(setconfCmd);
    }

    /*else if (strncmp(cmdPayload, "enc ", 4) == 0) {
      char buf[81];
      char setconfCmd[16];

      uint8_t len = strlen(cmdPayload) - 4;
      for (int i = 0; i < len; i++) {
        if (i < 81) buf[i] = cmdPayload[i + 4];
      }
      if (len <= (sizeof(buf)-1)) buf[len] = '\0';
      else buf[(sizeof(buf)-1)] = '\0';

#ifdef DEBUG_VERBOSE
      Serial.print("Buf: ");
      Serial.println(buf);
#endif
      
      uint8_t setconfCmdLen = 0;
      for (int i = 0; i < len; i++) {
        //if (buf[i] == 32 || buf[i] == '\0') break; // if SPACE command name is finished, if \0 command parameter is missing
        if (buf[i] == 32 || buf[i] == 61 || buf[i] == 58) break; // if SPACE(32) or =(61) or :(58) command name is finished
        else if (buf[i] == 0 || buf[i] == 10 || buf[i] == 13) { // if \0, LF (10) or CR (13) command parameter is missing
          break;
        }
        setconfCmd[i] = buf[i];
        setconfCmdLen++;
      }
      setconfCmd[setconfCmdLen] = '\0';
      yield();
#ifdef DEBUG_VERBOSE
      Serial.print("setconfCmd: '");
      Serial.print(setconfCmd);
      Serial.println("'");
#endif
      char bufg[50];
      sprintf(bufg, "enc '%s'", setconfCmd);
      sendLog(bufg);

      sprintf(bufg, "%s", XORENC(setconfCmd, encKey));
      sendLog(bufg);
      //getConfig(setconfCmd);
    }*/

    else if (strncmp(cmdPayload_lower, "restart", 7) == 0)
    {
      sendLog(F("restarting..."));
      restart();
    }

    else if (strncmp(cmdPayload_lower, "sysinfo", 7) == 0)
    {
      logSysdata();
    }

    else if (strncmp(cmdPayload_lower, "debugmode 1", 11) == 0)
    {
      sendLog(F("debugmode on"));
      sysInfoEverySecond = true;
    }

    else if (strncmp(cmdPayload_lower, "debugmode 0", 11) == 0)
    {
      sendLog(F("debugmode off"));
      sysInfoEverySecond = false;
    }

#ifdef ENABLE_FEATURE_NTP_TIME
    else if (strncmp(cmdPayload_lower, "date", 7) == 0)
    {
      printDate();
    }
#endif

#ifdef ENABLE_FEATURE_NTP_TIME
    else if (strncmp(cmdPayload_lower, "syncclock", 7) == 0)
    {
      syncClock(true);
    }
#endif

    else if (strncmp(cmdPayload_lower, "clearcreds", 10) == 0)
    {
      confClearCredentials();
    }

    else if (strncmp(cmdPayload_lower, "clearwifi", 10) == 0)
    {
      confClearWiFiCredentials();
    }

    else if (strncmp(cmdPayload_lower, "saveconf", 8) == 0)
    {
      saveConfig_all();
    }

    else if (strncmp(cmdPayload_lower, "savevalues", 10) == 0)
    {
      saveValues();
    }

    else if (strncmp(cmdPayload_lower, "encrypt", 10) == 0)
    {
      confEncrypt();
    }

    else if (strncmp(cmdPayload_lower, "decrypt", 10) == 0)
    {
      confDecrypt();
    }

    else if (strncmp(cmdPayload_lower, "ls", 2) == 0)
    {
      SPIFFS_listFiles();
    }

    else if (strncmp(cmdPayload_lower, "ipcfg", 5) == 0)
    {
      printIpcfg();
    }

    else if (strncmp(cmdPayload_lower, "help", 4) == 0)
    {
      cmdPrintHelp();
    }

    else if (strncmp(cmdPayload_lower, "mqttreset", 9) == 0)
    {
      mqttResetConnection();
    }

    else if (strncmp(cmdPayload_lower, "mqttinfo", 8) == 0)
    {
      mqttPublishStatus();
    }

    else if (strncmp(cmdPayload_lower, "getconf", 7) == 0)
    {
      sendLog(F("CONF: listing all conf parameters:"));
      getConfig((char *)"confDevWiFi");
      getConfig((char *)"confWeb");
      getConfig((char *)"confMqtt");
      getConfig((char *)"confBas");
      getConfig((char *)"confAdv");
      getConfig((char *)"confAdd");
      getConfig((char *)"confTime");
      getConfig((char *)"confLog");
      sendLog(F("------"));
    }
    else if (strncmp(cmdPayload_lower, "delconf", 7) == 0)
    {
      sendLog(F("deleting configuration..."));
      deleteConfig();
    }

    cmdInQueue = false;
  }
}

void cmdPrintHelp()
{
  sendLog(F("valid commands:"));
  sendLog(F("   sysinfo       show uptime, heap usage..."));
  sendLog(F("   date          show current date/time"));
  sendLog(F("   syncclock     perform NTP time sync now"));
  sendLog(F("   debugmode [0/1]"));
  sendLog(F("   loadconf      load saved configuration"));
  sendLog(F("   getconf       list all conf parameters"));
  sendLog(F("   get [PARAM]   show conf value"));
  sendLog(F("   get values    list current saved values"));
  sendLog(F("   set [PARAM] [VALUE] (1 blank after PARAM to clear)"));
  sendLog(F("   saveconf      save all configurations"));
  sendLog(F("   savevalues    save set values"));
  sendLog(F("   clearcreds    delete all passwords"));
  sendLog(F("   clearwifi     delete WiFi configurations"));
  sendLog(F("   mqttinfo      MQTT connection status"));
  sendLog(F("   mqttreset     reset MQTT connection"));
  sendLog(F("   encrypt       switch on encrypted stored passwords"));
  sendLog(F("   decrypt       switch off encrypted stored passwords"));
  sendLog(F("                 WARNING: deletes all currently saved credentials"));
  sendLog(F("   ls            list files on SPIFFS"));
  sendLog(F("   delconf       delete ALL configuration"));
  sendLog(F("   restart"));
}