#include <WiFi.h>
#include <HTTPClient.h>
#include "DHT.h"

// Replace with your network credentials
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// ThingSpeak settings
const String apiKey = "4TVNWN2ISUY73SPB";
const String channelID = "3088039";
const String server = "http://api.thingspeak.com/update";

// DHT settings
#define DHTPIN 15         // GPIO pin for DHT
#define DHTTYPE DHT22     // Change to DHT11 if using DHT11
DHT dht(DHTPIN, DHTTYPE);

// LDR settings
#define LDRPIN 34         // Analog pin for LDR (GPIO 34)

void setup() {
  Serial.begin(115200);
  delay(100);

  dht.begin();
  WiFi.begin(ssid, password);

  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to WiFi!");
}

void loop() {
  // Read temperature from DHT
  float temperature = dht.readTemperature();

  // Read light level from LDR
  int ldrValue = analogRead(LDRPIN);

  // Check if readings are valid
  if (isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Light Level: ");
  Serial.println(ldrValue);

  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;

    String url = server + "?api_key=" + apiKey +
                 "&field1=" + String(temperature) +
                 "&field2=" + String(ldrValue);

    http.begin(url);
    int httpResponseCode = http.GET();

    if (httpResponseCode > 0) {
      Serial.print("Data sent. Response code: ");
      Serial.println(httpResponseCode);
    } else {
      Serial.print("Error sending data. Code: ");
      Serial.println(httpResponseCode);
    }

    http.end();
  } else {
    Serial.println("WiFi not connected!");
  }

  delay(15000);  // ThingSpeak requires at least 15 seconds between updates
}