import argparse, json, csv, decimal

parser = argparse.ArgumentParser(description="Convert Etherscan holders csv to json")
parser.add_argument('-i', '--csv', help="Etherscan holders csv")
parser.add_argument('-o', '--json', help="Output json file")
args = parser.parse_args()


with open(args.csv) as f:
    reader = csv.DictReader(f)
    rows = list(reader)

holders = {}
for row in rows:
    strBalance = row['Balance'].replace(',', '')
    balance = decimal.Decimal(strBalance) * 10**18
    holders[row['HolderAddress']] = str(balance).split('.')[0]

with open(args.json, 'w') as f:
    json.dump(holders, f, indent=2)