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

#define LDR_PIN 18
#define LED_PIN 12
#define BUTTON_PIN 19

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannel1Number = 2617662;
const char* myWriteAPIKey = "39SNENCWNDY86C1Z";

int ledVal;
int statusCode;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT);
  pinMode(LDR_PIN, INPUT);
  digitalWrite(LED_PIN, LOW);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  delay(1000);
}

void loop() {
  int buttonState = digitalRead(BUTTON_PIN);
  int ldrValue = analogRead(LDR_PIN);

  Serial.print("Button State: ");
  Serial.println(buttonState);
  Serial.print("LDR Value: ");
  Serial.println(ldrValue);

  if (ldrValue > 1120) {
    digitalWrite(LED_PIN, HIGH);
    ledVal = buttonState;
  } else {
    digitalWrite(LED_PIN, LOW);
    ledVal = buttonState;
  }
  delay(1000);
  if(ldrValue !=0)
  {
      getWiFi();
  ThingSpeak.setField(1, ldrValue);
  ThingSpeak.setField(2, ledVal);
  ThingSpeak.setField(3, buttonState);
  statusCode = ThingSpeak.writeFields(myChannel1Number, myWriteAPIKey);
  }
  if (statusCode == 200) {
    Serial.println("Channel update successful");
  } else {
    Serial.println("Problem writing data: HTTP error code: " + String(statusCode));
  }
  delay(5000);
}

void getWiFi() {
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect");
    while (WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass);
      Serial.print(".");
      delay(4000);
    }
  }
  Serial.println("\nConnected");
}