import os
from dotenv import load_dotenv
import requests

load_dotenv()

def fetch_air_quality():
    url = os.getenv('AIR4THAI_URL')
    if not url:
        raise ValueError("Environment variable 'AIR4THAI_URL' is not set.")

    try:
        response = requests.get(url)
        response.raise_for_status() # ตรวจสอบว่าไม่มีข้อผิดพลาด
        return response.json()
    except requests.exceptions.RequestException as e:
        print("Error fetching air quality data:", e)
        return None