#!/usr/bin/env python
import argparse
import json
import sys
import collections

# TODO
# require python 3.7+ for ordered dictionaries?

parser = argparse.ArgumentParser(description='Output a sarif file with labeled paths preceeding arrays and objects')
parser.add_argument('file', metavar='file', type=str, help='input file, - for stdin')

args = parser.parse_args()
with open(args.file, 'r') if args.file != '-' else sys.stdin as fp:
    sarif_struct = json.load(fp)

def _label_dict(elem, path):
    d = collections.OrderedDict()
    for key, val in elem.items():
        subpath = path + "['%s']" % key
        if type(val) in [dict, list]:
            d[subpath] = "----path----"
        d[key] = _label(val, subpath)
    return d

def _label_list(elem, path):
    if len(elem) > 0:
        l = []
        for i in range(0, len(elem)):
            subpath = path + "[%d]" % i
            if i % 4 == 0:
                l.append("---- %s ----" % subpath)
            l.append(_label(elem[i], subpath))
        return l
    else:
        return elem

def _label(elem, path):
    t = type(elem)
    if t == dict:
        return _label_dict(elem, path)
    elif t == list:
        return _label_list(elem, path)
    else:
        return elem

json.dump(_label(sarif_struct, "sarif_struct"), sys.stdout, indent=2)