import googleads

class AdManager:
    def __init__(self, yaml_file_path):
        self.client = googleads.ad_manager.AdManagerClient.LoadFromStorage(yaml_file_path)

    def create_campaign(self, campaign_name):
        # Implement campaign creation logic
        pass

    def create_line_item(self, campaign_id, line_item_name):
        # Implement line item creation logic
        pass

    def generate_report(self, report_query):
        # Implement report generation logic
        pass

def main():
    import argparse
    parser = argparse.ArgumentParser(description="Manage Google Ad Manager tasks.")
    parser.add_argument("yaml_file", help="Path to the googleads.yaml file.")
    args = parser.parse_args()

    manager = AdManager(args.yaml_file)
    # Example usage
    manager.create_campaign("Test Campaign")
    manager.create_line_item("campaign_id", "Test Line Item")
    manager.generate_report("SELECT * FROM ...")

if __name__ == "__main__":
    main()

