import pypdf

pdf_path = 'cologne_duesseldorf_data/duesseldorf_innungen.pdf'

def extract_links():
    try:
        reader = pypdf.PdfReader(pdf_path)
        links = []
        for page in reader.pages:
            if "/Annots" in page:
                for annot in page["/Annots"]:
                    obj = annot.get_object()
                    if "/A" in obj and "/URI" in obj["/A"]:
                        uri = obj["/A"]["/URI"]
                        links.append(uri)
        
        print(f"Found {len(links)} links.")
        for link in links:
            if "mailto:" in link:
                print(f"Mailto: {link}")
            else:
                print(f"Link: {link}")
                
    except Exception as e:
        print(f"Error: {e}")

if __name__ == "__main__":
    extract_links()