# Copyright (c) 2013, Kevin Greenan (kmgreen2@gmail.com)
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import pyeclib
from pyeclib.ec_iface import ECDriver
import random
import string
import sys
import os
import argparse

parser = argparse.ArgumentParser(
    description='PyECLib tool to determine fragment indexes needed to '
                'recover missing fragments.')
parser.add_argument('k', type=int, help='number of data elements')
parser.add_argument('m', type=int, help='number of parity elements')
parser.add_argument('ec_type', help='EC algorithm used')
parser.add_argument('missing_fragments', type=int, metavar='missing_fragment',
                    nargs='+', help='missing_fragments')

args = parser.parse_args()

ec_driver = ECDriver(k=args.k, m=args.m, ec_type=args.ec_type)

fragments_needed = ec_driver.fragments_needed(args.missing_fragments)

print(fragments_needed)