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#!/usr/bin/env python

"""
script must:
- remove all 0.00 amounts
- keep 0.00 amounts-in when Payee == "Starting Balance"
"""

import re
import argparse

# remove zeros and escaped quotes
zeros = re.compile(',0[.]00,')
escaped_quotes = re.compile('\"Last Temptation\"')

def scrub(s):
    if "Last Temptation" in s:
        s = escaped_quotes.sub('', s)
    elif "Starting Balance" in s:
        s = zeros.sub(',,', s, count=1)
    else:
        s = zeros.sub(',,', s)

    return s


parser = argparse.ArgumentParser()
parser.add_argument(
        'input', metavar='INPUT', type=str,
        help='The input csv file, exported from YNAB'
)
parser.add_argument(
        'output', metavar='OUTPUT', type=str,
        help='The output csv file.'
)



if __name__ == '__main__':
    args = parser.parse_args()

    with open(args.input, 'r') as f:
        csv = f.readlines()

    scrubbed = [scrub(line) for line in csv[1:]]
    with open(args.output, 'w') as f:
        for line in scrubbed:
            f.write(line)