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

#define DHTPIN 15          // ขา DATA ของ DHT22
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

const char* ssid     = "Wokwi-GUEST"; // ใส่ WiFi ของคุณถ้ารันบนบอร์ดจริง
const char* password = "";

const String scriptURL = "https://script.google.com/macros/s/AKfycbyU1r12bi_gu9YE9l26MzbVjE2k-A_xn60CtJRYk1CSsL2AtJaqwcD6vLcRP9VSfLKoyQ/exec";

unsigned long lastTime = 0;
const long interval = 60000;  // 10 วินาที

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

  Serial.print("Connecting to WiFi");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println("\nWiFi connected!");
}

void loop() {
  if (millis() - lastTime >= interval) {
    lastTime = millis();

    float h = dht.readHumidity();
    float t = dht.readTemperature();     // Celsius

    // ตรวจสอบค่าที่อ่านมา
    if (isnan(h) || isnan(t)) {
      Serial.println("Failed to read from DHT!");
      return;
    }

    // สร้าง query string
    String url = scriptURL +
                 "?temp=" + String(t, 1) +
                 "&hum=" + String(h, 1) +
                 "&ts="  + String(time(nullptr)); // ส่ง epoch ได้ (หรือเว้นให้ GAS ใส่ให้)

   if (WiFi.status() == WL_CONNECTED) {
  HTTPClient http;
  http.setFollowRedirects(HTTPC_STRICT_FOLLOW_REDIRECTS);  // ⭐ เพิ่มบรรทัดนี้
  http.begin(url);
  int httpCode = http.GET();
  if (httpCode == HTTP_CODE_OK) {
    Serial.println("Row added → Google Sheets");
  } else {
    Serial.printf("Error sending data (%d)\n", httpCode);
  }
  http.end();
}

  }
}