#include <WiFi.h>
#include <ThingSpeak.h>
int statusCode;
const int PIR_SENSOR_OUTPUT_PIN = 15;  /* PIR sensor O/P pin */
#define buzzer 19
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient Client;
unsigned long myChannelNumber= 2311077;
const char * myWriteAPIKey="UMSR1Q64M0JAG976";
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(14, OUTPUT);
  pinMode(13, INPUT);
  pinMode(PIR_SENSOR_OUTPUT_PIN, INPUT);
  pinMode(buzzer,OUTPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(Client);
}

void loop() {
  int motion = digitalRead(PIR_SENSOR_OUTPUT_PIN);
  if(WiFi.status() !=WL_CONNECTED)
  {
    Serial.print("Attempting to connect");
    while(WiFi.status() !=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.print(".");
      delay(1000);
    }
    Serial.println("\nConected.");
  }  
  digitalWrite(14,HIGH); //water flowing 
    
    if( motion == LOW ) //No one to turn off the pipe
    {
      digitalWrite(buzzer,HIGH); //buzzer alarm to turn off the pipe
      Serial.print("Please turn off the pipe\n\n");
      delay(1000);
    }
    else{
      Serial.print("Object detected\n\n");
      delay(1000);
    }
    digitalWrite(14,LOW);//water not flowing
    if(motion == HIGH)  //moment of public
    {
      digitalWrite(buzzer,LOW);  //buzzer does not make alarm
      delay(1000);
    }
    else{
      Serial.print("Please turn off the pipe\n\n");
      delay(1000);
    }

  ThingSpeak.setField(1, motion);
    statusCode=ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
    if(statusCode==200)
    {
      Serial.println("Channel update successfull.");
    }
    else
    {
       delay(1000);
    }

}