#include <Servo.h> 
#include <Arduino_APDS9960.h>

//PIR SENSOR
int PIRsensor = 2;              // the pin that the sensor is atteched to
int PIRstate = LOW;             // by default, no motion detected
int PIRval = 0;                 // variable to store the sensor status (value)

//FLEX SENSOR
int flexPin = A0;
int value;


//RELAY & SERVO
int relayPin = 3;
int servoPin = 9;
int pos = 0;    // variable to store the servo position 

Servo myservo;  // create servo object to control a servo 




void setup() {
  pinMode(PIRsensor, INPUT);
  pinMode(relayPin, OUTPUT);
  myservo.attach(servoPin);
  Serial.begin(9600);        // initialize serial
  while (!Serial);

  if (!APDS.begin()) {
    Serial.println("Error initializing APDS-9960 sensor!");
  }
}

void loop(){

  //FLEX SENSOR
  value = analogRead(flexPin);
  Serial.print("flex value: ");
  Serial.println(value);
  delay(500);
  //value = map(value, 700, 900,0, 255);//Map value 0-1023 to 0-255 (PWM)

  PIRval = digitalRead(PIRsensor);   // read sensor value


  if (PIRval == HIGH) {           // check if the sensor is HIGH
    delay(100);                // delay 100 milliseconds 
  
    
    if (PIRstate == LOW) {
      Serial.println("Motion detected!");
      Serial.println(PIRval); 
      digitalWrite(LEDB,LOW);
      
      do{
        //SERVO
        myservo.write(0);   
        delay(1000);
        //RELAY
        digitalWrite (relayPin,HIGH);
        delay(100);
        Serial.println("relay on");

      }
      while (value > 100);

      PIRstate = HIGH;       // update variable state to HIGH
      
    }
  } 
  else {
      digitalWrite(LEDB,HIGH);
      delay(200);             // delay 200 milliseconds 
      
      if (PIRstate == HIGH){
        Serial.println("Motion stopped!");
        Serial.println(PIRval);

        myservo.write(90); 

        digitalWrite (relayPin,LOW);

        PIRstate = LOW;       // update variable state to LOW
    }
  }
}