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

#define LDR_PIN 34
#define LED_PIN 5

char ssid[] = "Wokwi-GUEST";     // WiFi SSID
char pass[] = "";                // WiFi Password
WiFiClient client;

unsigned long myChannelNumber = 2640574;  // Your ThingSpeak channel number
const char* myWriteAPIKey = "EC7NOMX3TYQDCRU2"; // ThingSpeak Write API Key
bool ledstate = false;  // Boolean variable to track LED state
int statusCode;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);  // Initialize ThingSpeak
}

void getWiFi() {
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect");
    while (WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass);
      Serial.print(".");
      delay(5000);
    }
  }
  Serial.println("\nConnected");
}

void loop() {
  getWiFi();  // Ensure WiFi is connected
  int ldrValue = analogRead(LDR_PIN); // Read the LDR value
  Serial.println(ldrValue);           // Print LDR value to the Serial Monitor

  int threshold = 2000;  // Set the light threshold
  if (ldrValue < threshold) {
    digitalWrite(LED_PIN, HIGH); // Turn on LED if it's dark
    ledstate = true;             // Update LED state
  } else {
    digitalWrite(LED_PIN, LOW);  // Turn off LED if it's bright
    ledstate = false;            // Update LED state
  }

  // Update ThingSpeak with the current LED state
  ThingSpeak.setField(1, ledstate ? 1 : 0);
  statusCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

  if (statusCode == 200) {
    Serial.println("Channel Updated");
  } else {
    Serial.println("Problem Updating Channel: HTTP Error Code " + String(statusCode));
  }

  delay(5000); // Delay for stability and to prevent rapid updates to ThingSpeak
}