#!/usr/bin/env python3

"""
"""

import argparse
import os
import tabulate
from trustgraph.api import Api
import json

default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')

def show_flows(url):

    api = Api(url)

    flow_ids = api.flow_list()

    if len(flow_ids) == 0:
        print("No flows.")
        return

    print(flow_ids)

    flows = []

    for id in flow_ids:
        flow = api.flow_get(id)
        flows.append((
            id,
            flow.get("description", ""),
        ))

    print(tabulate.tabulate(
        flows,
        tablefmt="pretty",
        maxcolwidths=[None, 40],
        stralign="left",
        headers = ["id", "description"],
    ))
    
def main():

    parser = argparse.ArgumentParser(
        prog='tg-show-flows',
        description=__doc__,
    )

    parser.add_argument(
        '-u', '--api-url',
        default=default_url,
        help=f'API URL (default: {default_url})',
    )

    args = parser.parse_args()

    try:

        show_flows(
            url=args.api_url,
        )

    except Exception as e:

        print("Exception:", e, flush=True)

main()