#include<DHT.h>
#include<Servo.h>

//***********ledpin
#define ledPin 4
//************gaspin
#define gasPin A0
//buzzerpin
#define buzzerPin 3
//************servo motor pin
#define servoPin 11
//************dht22 pin
#define dhtPin 2
#define dht_type DHT22
//
//button pin
const int buttonPin = 13;
int oldValue = LOW;
//
Servo s;
//
DHT dh(dhtPin,dht_type);
float TC;
float TF;
float HUMI;
//****************************************************
void setup() 
{
  Serial.begin(115200);
//********************************SMART GARAGE********************
  
  // Initialize the pin for reading the button.
  pinMode(buttonPin, INPUT);
  //
  s.attach(servoPin);
//**************************SMART KITCHEN**********************
  pinMode(ledPin, OUTPUT);
  pinMode(gasPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  dh.begin();

}

void loop() 
{
  //*************************SMART GARAGE*******************
  // Read the value of pin 13.
  int newValue = digitalRead(buttonPin);
  // Check if the value was changed,
  // by comparing it with the previous value.
  if(newValue != oldValue)
  {
    if(newValue == HIGH)
    {
      Serial.println("The button is pressed.");
       for (int angle = 0; angle <= 180; angle += 45) {
        s.write(angle);
        delay(850);
       } 
    }
    else
    {
      Serial.println("The button is released.");
      for (int angle = 180; angle >= 0; angle -= 45) {
        s.write(angle);
        delay(850);
      }
    }
    delay(100);
    // Remember the value for the next time.
    oldValue = newValue;
  }
  // Slow down the sketch.
  // Also for debouncing the button.
  delay(100);
 
 //*********************SMART KITCHEN**********************
  //--------------------gas
  int gasLevel=analogRead(gasPin);
  Serial.print("GAS LEVEL: ");
  Serial.print(gasLevel);
  Serial.println("ppm");
  //--------------------temp & humi
  TC=dh.readTemperature();
  TF=dh.readTemperature(true);
  HUMI=dh.readHumidity();
  Serial.print("HUMIDITY: ");
  Serial.print(HUMI);
  Serial.println(" ");
  Serial.print("CENTREGRATE TEMPERATURE: ");
  Serial.print(TC);
  Serial.println(" ");
  Serial.print("FARENHIDE TEMPERATURE: ");
  Serial.print(TF);
  Serial.println(" ");
  
  //---------------------logic
  if((gasLevel>=0 && gasLevel<=400) && (TC >= 0.00 && TC<= 35.00)){
     Serial.println("ALL SYSTEM IS NORMAL.");
     digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);
  }
  else if((gasLevel >=401 && gasLevel <=650) || (TC >= 35.01 && TC <= 50.00)){
    Serial.println("PROBLEM MAY ARISE!!!");
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
  }
  else if(gasLevel >=651 || TC >= 50.01){
    Serial.println("HOUSE IS ON THE RED ALART...!!!");
    Serial.println("THE PROBABLITY OF A HOUSE FIRE IS EXTREMELY HIGH!!!!!!!!");
    digitalWrite(buzzerPin, HIGH);
    tone(buzzerPin,1000,1000);
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(buzzerPin, LOW);
    digitalWrite(ledPin, LOW);
    delay(1000);
    
  }
  else{
    Serial.println(" WRONG INPUT COLLECTED!!!!");
  }
  Serial.print("\n");
  delay(1500);
}