#include <Wire.h> //library I2C
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
//defines pins number
const int trigPin = 13;
const int echoPin = 14;
const int rPin = 27;
const int bPin = 25;
const int gPin = 26;
const int pirPin = 4;
const int buttonPin = 16;
const int relayPin = 5;

int isRats = 0;
int buttonState = 0;
int pirState = 0;
int counter = 0;
int pir;
int currentState;
int previousState;
//unsigned long duration;
//int SDA = 21,SCL = 22;
long duration;
int distance;
bool relayState = false;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  //Serial.println("Hello, ESP32!");
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(pirPin, INPUT);
  pinMode(rPin, OUTPUT);
  pinMode(bPin, OUTPUT);
  pinMode(gPin, OUTPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(relayPin, OUTPUT);
  Wire.begin(SDA, SCL);
  lcd.begin(SDA, SCL);
}

void loop() {
  isRats = digitalRead(pirPin);
  buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH){
    digitalWrite(pir, HIGH);
    currentState = 1;
  }else {
    digitalWrite(pir, LOW);
    currentState = 0;
  }

  if (currentState != currentState){
    if (currentState == 1){
      counter = counter + 1;
      Serial.println(counter);
    }
  }
  
  if (counter == 0){
    digitalWrite(relayPin, LOW);
    digitalWrite(pirPin, HIGH);
  }
  if (counter == 1){
    digitalWrite(relayPin, HIGH);
    digitalWrite(pirPin, LOW);
  }
  if (counter == 2){
    counter = 0;
  }
  previousState = currentState;
  delay (100);


// this is can be use from open ai
// if (buttonState == LOW){
//   relayState = !relayState;
//   digitalWrite(relayPin, relayState);
//   pirState = !pirState;
//   digitalWrite(pirPin, pirState);
//   if(relayState == 1 && pirState == 1) {
//     lcd.clear();
//     lcd.setCursor(0,0);
//     lcd.print("PIR OFF");
//   } else {
//     lcd.clear();
//     lcd.setCursor(0,0);
//     lcd.print("PIR ON");
//   }
//   delay(200);
//   }





  // if (buttonState == LOW){
  // relayState = !relayState;
  // relayState = 0;
  // digitalWrite(relayPin, relayState);
  // pirState = 0;
  // digitalWrite(pirPin, pirState);
  // lcd.clear();
  // lcd.setCursor(0,0);
  // lcd.print("PIR OFF");
  // delay(200);
  // }else {
  //   relayState = 1;
  //   digitalWrite(relayPin, relayState);
  //   pirState = 1;
  //   digitalWrite(pirPin, pirState);
  //   lcd.setCursor(0,0);
  //   lcd.print("Thanks");
  //   delay(500);
  //   Serial.println("Thanks");
  //   lcd.clear();
  // }
  



  // isRats = digitalRead(pirPin);
  // Serial.println(isRats);
  if (isRats == 1) {

      // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  // Clears the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculating the distance
  distance = duration * 0.034 / 2;
  // Prints the distance on the Serial Monitor
  Serial.print("Distance: ");
  Serial.println(distance);


  if (isRats == 1 && distance < 200 ){

    digitalWrite(rPin, HIGH);
    delay(1000);
    digitalWrite(gPin, LOW);
    delay(1000);
    digitalWrite(bPin, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Motion Detected");
    lcd.setCursor(0,1);
    lcd.print("Mice !");
    Serial.println("Mice!");
    delay(200);
    // lcd.clear();
  }

  else if (isRats == 1 && distance < 350 ){

    digitalWrite(rPin, LOW);
    delay(1000);
    digitalWrite(bPin, HIGH);
    delay(1000);
    digitalWrite(gPin, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("There Are");
    lcd.setCursor(0,1);
    lcd.print("Something!");
    Serial.println("There Are Something");
    delay(200);
    lcd.clear();
  }

  else {

    digitalWrite(gPin, HIGH);
    delay(1000);
    digitalWrite(rPin, LOW);
    delay(1000);
    digitalWrite(bPin, LOW);
    lcd.setCursor(0,0);
    lcd.print("You're       ");
    lcd.setCursor(0,1);
    lcd.print("Plant Save");
    Serial.println("You're Plant Save");
    delay(200);
    // lcd.clear();

    }    
  }
}

// //read the state of the pushbutton value:
//   buttonState = digitalRead(buttonPin);
// // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
//   if (buttonState == 1 && pirState == 0){

//     pushed = 1-pushed;
//     delay (100);
//   }


















  //      // turn LED on:
  //   digitalWrite(isRats, HIGH);
  //   // sei the cursor to column 0, line 0
  //   lcd.setCursor(0, 0);
  //   lcd.print("WELCOME SIR");
  //   delay(100);
  //   // lcd.clear();
  // } else {
  //   // turn LED off
  //   digitalWrite(isRats, LOW);
  //   // sei the cursor to column 0, line 0
  //   lcd.setCursor(0, 0);
  //   lcd.print("THANK YOU SIR");
  //   // set the cursor to column 0, line 1
  //   lcd.setCursor(0, 1); 
  //   lcd.print(" ");
  //   delay(100);
  // }



  // } else if (buttonState == 1) {
  //   // before turn LED off:
  //   digitalWrite(rPin, HIGH);
  //   delay(5000);
  //   digitalWrite(gPin, LOW);
  //   digitalWrite(bPin, LOW);
  //   digitalWrite(pirPin, LOW);
  // } else { 
  //   // turn LED off:
  //   digitalWrite(rPin, LOW);
  //   digitalWrite(bPin, LOW);
  //   digitalWrite(gPin, LOW);
  //   lcd.clear();
  // }