#!/usr/bin/env python3

"""
Connects to the graph query service and dumps all graph edges.
"""

import argparse
import os
from trustgraph.clients.triples_query_client import TriplesQueryClient

default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://localhost:6650')

def show_graph(pulsar):

    tq = TriplesQueryClient(pulsar_host=pulsar)

    rows = tq.request(None, None, None, limit=10_000_000)

    for row in rows:
        print(row.s.value, row.p.value, row.o.value)

def main():

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

    parser.add_argument(
        '-p', '--pulsar-host',
        default=default_pulsar_host,
        help=f'Pulsar host (default: {default_pulsar_host})',
    )

    args = parser.parse_args()

    try:

        show_graph(args.pulsar_host)

    except Exception as e:

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

main()