GSM based three phase motor controller program problem

const int analogPin1 = PIN_A0;   // pin that the eb L1 sense
const int analogPin2 = PIN_A1;   // pin that the eb L2 sense 
const int analogPin3 = PIN_A2;   // pin that the eb L3 sense
const int analogPin3 = PIN_A3;   // pin that the dry run sense
const int threshold = 1023;   // an arbitrary threshold level that's in the range of the analog input

int repeat = 0;
int LED = 8;
int motor = 9;
int buttonpushcounter =0;
int buttonstate =0;
int lastbuttonstate =0;
int temp=0;
int i=0;
char str[15];
void setup()
{
  Serial.begin(9600);
  pinMode(threshold , INPUT);
  pinMode(motor,OUTPUT);
  pinMode(LED,OUTPUT);
  digitalWrite(motor,LOW);
  digitalWrite(LED,LOW);
  delay(5000);
  delay(5000);
  delay(5000);
  Serial.println("AT+CNMI=2,2,0,0,0");
  delay(1000); 
  Serial.println("AT+CMGF=1");
  delay(1000);

  // read the value of the potentiometer:
  int analog1Value = analogRead(analogPin1);
  int analog2Value = analogRead(analogPin2);
  int analog3Value = analogRead(analogPin3);

  Serial.println("Analog pin A0: " +String(analog1Value));
  Serial.println( "Analog pin A1: " +String(analog2Value));
  Serial.println("Analog pin A2: " +String(analog3Value));
  delay(1000);
  
}

void loop()
{
buttonstate = analogRead (threshold);
if (buttonstate != lastbuttonstate)
{
  if (buttonstate == threshold){
    buttonpushcounter ++;
    Serial.println("3 PHASE OK");
    delay(1000);
    //Serial.println("number of button pushes:");
    //Serial.println(buttonpushcounter);
    Serial.println("AT+CMGS=\"+919705422218\"\r"); // Replace x with mobile number
  delay(1000);
  Serial.println("system ready three phase available");// The SMS text you want to send
  delay(1000);
  Serial.println((char)26); // ASCII code of CTRL+Z
  delay(1000);
  
   } else {
    
    if (buttonstate != lastbuttonstate)
    
    Serial.println("3 PHASE NOT OK");
    delay(1000);
    //Serial.println("number of button pushes:");
    //Serial.println(buttonpushcounter);
    digitalWrite(motor,LOW);
      digitalWrite(LED,LOW);
      delay(1000);
    Serial.println("AT+CMGS=\"+919705422218\"\r"); // Replace x with mobile number
  delay(1000);
  Serial.println("system ready but three phase not available");// The SMS text you want to send
  delay(1000);
  Serial.println((char)26); // ASCII code of CTRL+Z
  delay(1000);
      }

  lastbuttonstate = buttonstate;
  if (buttonpushcounter % 1 ==0){
  
}
    
  
 

  }

   
  if(temp==1)
  {
    check();
    temp=0;
    i=0;
    delay(1000);
  
  }
  }

 void serialEvent() 
 {
  while(Serial.available()) 
  {
    if(Serial.find("/"))
    {
      delay(1000);
      while (Serial.available()) 
      {
      char inChar=Serial.read();
      str[i++]=inChar;
      if(inChar=='/')
      {
        temp=1;
        return;
      } 
      } 
    }
   }
 }
void check()
{
   if(!(strncmp(str,"motor on",8)))
    {delay(1000);        // delay in between reads for stability

      // read the value of the potentiometer:
  int analog1Value = analogRead(analogPin1);
  int analog2Value = analogRead(analogPin2);
  int analog3Value = analogRead(analogPin3);
  Serial.println("Analog pin A0: " +String(analog1Value));
  
  Serial.println( "Analog pin A1: " +String(analog2Value));
  
  Serial.println("Analog pin A2: " +String(analog3Value));
  
   if("analog1Value  threshold", "analog2Value  threshold", "analog3Value  threshold"){
    delay(100);        // delay in between reads for stability
      digitalWrite(motor,HIGH);
      digitalWrite(LED,HIGH);
      delay(1000);  
      Serial.println("AT+CMGS=\"+919705422218\"\r"); // Replace x with mobile number
      delay(1000);
      Serial.println("Motor Activated");// The SMS text you want to send
      delay(100);
      Serial.println((char)26); // ASCII code of CTRL+Z
      delay(1000);
       } else {
        digitalWrite(motor,LOW);
      digitalWrite(LED,LOW);
      delay(1000);
      Serial.println("AT+CMGS=\"+919705422218\"\r"); // Replace x with mobile number
      delay(1000);
      Serial.println("Motor deactivated due to three phase not available");// The SMS text you want to send
      delay(100);
      Serial.println((char)26); // ASCII code of CTRL+Z
      delay(1000);  
       }
    }  
   else if(!(strncmp(str,"motor off",9)))
    {
      digitalWrite(motor,LOW);
      digitalWrite(LED,LOW);
      delay(1000);  
      Serial.println("AT+CMGS=\"+919705422218\"\r"); // Replace x with mobile number
      delay(1000);
      Serial.println("Motor deactivated");// The SMS text you want to send
      delay(100);
      Serial.println((char)26); // ASCII code of CTRL+Z
      delay(1000);
}  
else if(!(strncmp(str,"test",4)))
{
      Serial.println("AT+CMGS=\"+919705422218\"\r"); // Replace x with mobile number
      delay(1000);
      Serial.println("The System is Working Fine.");// The SMS text you want to send
      delay(100);
      Serial.println((char)26); // ASCII code of CTRL+Z
      delay(1000);
}
}