pyobjc-framework-linkpresentation

import LinkPresentation import Foundation import objc import threading # Use a threading.Event to signal when the metadata fetching is complete done_fetching = threading.Event() metadata_result = None error_result = None def completion_handler(metadata, error): global metadata_result, error_result metadata_result = metadata error_result = error done_fetching.set() # Signal that fetching is done @objc.python_block def py_completion_handler(metadata, error): completion_handler(metadata, error) def fetch_link_metadata(url_string): global metadata_result, error_result metadata_result = None error_result = None done_fetching.clear() url = Foundation.NSURL.URLWithString_(url_string) if not url: print(f"Invalid URL: {url_string}") return provider = LinkPresentation.LPMetadataProvider.alloc().init() provider.startFetchingMetadataForURL_completionHandler_(url, py_completion_handler) # Wait for the completion handler to be called print(f"Fetching metadata for {url_string}...") if not done_fetching.wait(timeout=10): # Wait up to 10 seconds print("Fetching timed out.") return if error_result: print(f"Error fetching metadata: {error_result}") elif metadata_result: print("Metadata fetched successfully:") print(f" Title: {metadata_result.title()}") print(f" URL: {metadata_result.URL()}") else: print("No metadata or error received.") if __name__ == "__main__": # Fetch metadata for a remote URL test_url = os.environ.get('TEST_URL', 'https://www.apple.com') fetch_link_metadata(test_url) # Create and inspect custom metadata print("\nCreating custom metadata:") custom_metadata = LinkPresentation.LPLinkMetadata.alloc().init() custom_metadata.setOriginalURL_(Foundation.NSURL.URLWithString_("https://example.com/custom")) custom_metadata.setURL_(Foundation.NSURL.URLWithString_("https://example.com/custom")) custom_metadata.setTitle_("My Custom Link Title") print(f" Title: {custom_metadata.title()}") print(f" URL: {custom_metadata.URL()}")