#include <WiFi.h>
#include <ThingSpeak.h>

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber= 2632350;
const char*myWriteAPIKey="0NSOZG90XD1QW0SA";
int statusCode;

const int ldrPin = 34; // ADC pin for LDR
const int relayPin = 23; // Digital pin for relay control

int ldrValue = 0; // Variable to store the LDR value
int threshold = 500; // Threshold value for LDR to activate the relay

void setup() {
  Serial.begin(115200); // Start serial communication for debugging
  pinMode(ldrPin, INPUT); // Set the LDR pin as input
  pinMode(relayPin, OUTPUT); // Set the relay pin as output
  digitalWrite(relayPin, LOW); // Ensure relay is off initially
}
  void connectToCloud(){
  if(WiFi.status() != WL_CONNECTED){
    Serial.print("ATTEMPTING TO CONNECT");
    while(WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid , pass);
      Serial.print(".");
      delay(500);
    }
  }
  Serial.println("/nConnected");
}
void loop() {
  ldrValue = analogRead(ldrPin); // Read the LDR value
  Serial.print("LDR Value: ");
  Serial.println(ldrValue); // Print the LDR value to the serial monitor

  // Check if the LDR value is below the threshold
  if (ldrValue < threshold) {
    digitalWrite(relayPin, HIGH); // Turn on the relay (and the LED)
  } else {
    digitalWrite(relayPin, LOW); // Turn off the relay (and the LED)
  }

  delay(1500); // Wait for half a second before reading again
}
 
 void writeData(){
  ThingSpeak.setField(1,ldrValue);
  ThingSpeak.setField(2,relayPin);
  statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  if(statusCode==200)
  Serial.println("Channel Update Successful");
  else
  Serial.println("Problem Writing Data. HTTP error code :"+
  String(statusCode));
  delay((500));
 }