#!/usr/bin/env python3
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"""
 This script grabs all documents from a specified collection in a MongoDB
 database and creates a new collection with the same documents.

 To run this script you use the following command:
 python3 ./create-new-collection.py --uri <uri> --db_name <db_name> --collection_name <collection_name> /
    --new_collection_name <new_collection_name>
"""
import argparse
import json

from bson import json_util
from helper import get_database

parser = argparse.ArgumentParser(
    description="Get all documents from a "
    "specified collection in a MongoDB database "
    "and create a new collection with the same "
    "documents."
)
parser.add_argument(
    "--uri", help="URI of the database", type=str, required=True
)
parser.add_argument(
    "--new_collection_name",
    help="Name of the new collection",
    type=str,
    required=True,
)
parser.add_argument(
    "--db_name", help="Name of the database", type=str, default="gem5-vision"
)
parser.add_argument(
    "--collection_name",
    help="Name of the collection",
    type=str,
    default="resources",
)

args = parser.parse_args()

uri = args.uri
db_name = args.db_name
collection_name = args.collection_name
new_collection_name = args.new_collection_name


collection = get_database(uri, db_name, collection_name)

new_collection = get_database(uri, db_name, new_collection_name)

# get all documents from collection
# Suppress _id field from being returned
# as new collection will have its own _id field
resources = collection.find({}, {"_id": 0})

# convert to json
resources = json.loads(json_util.dumps(resources))

new_collection.insert_many(resources)