added example env and a utils file

example.env

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+SAMPLE_PDF=

utils.py

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+import requests
+from typing import Optional
+from urllib.parse import unquote
+
+def get_filename_from_cd(cd: Optional[str]) -> Optional[str]:
+    """
+    Get filename from content-disposition header.
+    """
+    if not cd:
+        return None
+    fname = [x.strip() for x in cd.split(';') if x.strip().startswith('filename=')]
+    return unquote(fname[0].split('=')[1]) if fname else None
+
+def download_file(url: str) -> None:
+    """
+    Download a file from a URL and save it with the server-provided name.
+    """
+    response = requests.get(url)
+    response.raise_for_status()  # Raises an HTTPError if the HTTP request returned an unsuccessful status code
+
+    filename = get_filename_from_cd(response.headers.get('content-disposition'))
+
+    if filename:
+        with open(filename, 'wb') as file:
+            file.write(response.content)
+        print(f"File downloaded and saved as: {filename}")
+    else:
+        print("Filename could not be determined from the server.")
+
+if __name__ == "__main__":
+    # Example Usage
+    url = "YOUR_FILE_URL_HERE"
+    download_file(url)