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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* scriptUrl = "https://script.google.com/macros/s/AKfycby7tcLfoGlLvpwcCdRFu8Z6bvTiyf-PSpNivow_eDQS6kZXsLb93I80cUgAirFhdLNU/exec"; // Ganti dengan URL Apps Script

#define PPM_PIN 34  // Pin analog MQ-135

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);
    
    Serial.print("Connecting to WiFi");
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.print(".");
    }
    Serial.println("\nConnected to WiFi");
}

void loop() {
    // Baca nilai dari sensor MQ-135
    int16_t ppmValue = analogRead(PPM_PIN);
    int mappedppmValue = (ppmValue / 4.095);  // Koreksi pembacaan nilai

    Serial.print("PPM: ");
    Serial.println(mappedppmValue);

    // Kirim data ke Google Sheets
    if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
        http.begin(scriptUrl);
        http.addHeader("Content-Type", "application/x-www-form-urlencoded");

        // Format data yang dikirim
        String postData = "ppm=" + String(mappedppmValue);

        int httpResponseCode = http.POST(postData);
        if (httpResponseCode > 0) {
            Serial.println("Data sent to Google Sheets");
        } else {
            Serial.print("Error sending data: ");
            Serial.println(httpResponseCode);
        }

        http.end();
    } else {
        Serial.println("WiFi Disconnected");
    }

    delay(5000); // Kirim data setiap 5 detik
}