import boto3


client = boto3.client('stepfunctions')


def get_state_machines():
    response = client.list_state_machines(
        maxResults=123)
    state_machines = response['stateMachines']
    return state_machines


def get_state_machines_with_app_family(state_machines):
    state_machines_with_app_family = []
    for each_state_machine in state_machines:
        arn = each_state_machine['stateMachineArn']
        response = client.list_tags_for_resource(
            resourceArn=arn
        )
        i = 0
        while i < len(response['tags']):
            if 'application_family' in response['tags'][i].values():
                state_machines_with_app_family.append(each_state_machine)
            i += 1
    return state_machines_with_app_family

def print_percentage_info(contains_app_family, state_machines):
    percent = (len(contains_app_family) / len(state_machines)) * 100
    print('Amount of state machines: ' + str(len(state_machines)))
    print('Contains app family tag: ' + str(len(contains_app_family)))
    print('Percent ' + str(int(percent)) + '%')


def main():
    """Start script."""
    state_machines = get_state_machines()
    state_machines_with_app_family = get_state_machines_with_app_family(state_machines)
    print_percentage_info(state_machines_with_app_family, state_machines)

if __name__ == '__main__':
    main()