Firebase - Firestore collection - Using wildcards

firestore_wildcards.py

    def replace_wildcards(db_client, collection_path: str):
        """
        Returns a generator with all the elements paths matching the collection expression.
        Wildcards are allowed: So, you can use 'user/*/collection/*/subcollection/*' to retrieve all the
        documents matching that expression.
        """
        collection_parts = collection_path.split('*')
        if len(collection_parts) == 1:
            yield collection_parts[0]
        else:
            to_replace = collection_parts[0].rstrip('/')
            documents = db_client.collection(to_replace).list_documents()
            for element in documents:
                new_collection_path = f"{element.path}/{'*'.join(collection_parts[1:])}".replace('//', '/')
                is_collection = len(new_collection_path.rstrip('/*').split('/')) % 2 != 0
                if is_collection:
                    yield from self.replace_wildcards(new_collection_path)
                else:
                    yield new_collection_path.rstrip('/')