#!/usr/bin/env python3

"""
Starts a load operation on a knowledge core which is already stored by
the knowledge manager.  You could load a core with tg-put-kg-core and then
run this utility.
"""

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

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

def load_kg_core(url, user, id, flow, collection):

    api = Api(url).knowledge()

    class_names = api.load_kg_core(user = user, id = id, flow=flow,
                                   collection=collection)

def main():

    parser = argparse.ArgumentParser(
        prog='tg-delete-flow-class',
        description=__doc__,
    )

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

    parser.add_argument(
        '-U', '--user',
        default="trustgraph",
        help='API URL (default: trustgraph)',
    )

    parser.add_argument(
        '--id', '--identifier',
        required=True,
        help=f'Knowledge core ID',
    )

    parser.add_argument(
        '-f', '--flow-id',
        default=default_flow,
        help=f'Flow ID (default: {default_flow}',
    )

    parser.add_argument(
        '-c', '--collection',
        default=default_collection,
        help=f'Collection ID (default: {default_collection}',
    )

    args = parser.parse_args()

    try:

        load_kg_core(
            url=args.api_url,
            user=args.user,
            id=args.id,
            flow=args.flow_id,
            collection=args.collection,
        )

    except Exception as e:

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

main()