#!/usr/bin/python3

# The MIT License (MIT)
#
# Copyright © 2024 pacman64
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


info = '''
minizj [keys...]

This is the MINImal version of the Zoom Json tool.
'''


from json import dump, load
from sys import argv, exit, stderr, stdin, stdout


def match_key(kv, key):
    if key in kv:
        return key

    low = key.lower()
    for k in kv.keys():
        if low == k.lower():
            return k

    try:
        i = int(key)
        l = len(kv)
        if i < 0:
            i += l

        if not (-l <= i < l):
            return key

        for j, k in enumerate(kv.keys()):
            if i == j:
                return k
    except Exception as _:
        return key

    return key


def typeof(x):
    # return str(type(x))
    return {
        type(None): 'null',
        bool: 'boolean',
        dict: 'object',
        float: 'number',
        int: 'number',
        str: 'string',
        list: 'array',
        tuple: 'array',
    }.get(type(x), 'other')


def zoom(data, keys):
    for k in keys:
        if isinstance(data, dict):
            # m = match_key(data, k)
            # if not (m in data):
            #     raise Exception(f'{m}: object doesn\'t have that key')
            data = data.get(match_key(data, k), None)
            continue

        if isinstance(data, (list, tuple)):
            try:
                k = int(k)
                l = len(data)
                data = data[k] if -l <= k < l else None
            except Exception as _:
                # raise Exception(f'{k}: arrays don\'t have keys like objects')
                data = None
            continue

        # return None
        # if not (data is None):
        #     data = None
        #     continue
        raise Exception(f'{k}: can\'t zoom on value of type {typeof(data)}')

    return data


try:
    data = load(stdin)
    data = zoom(data, argv[1:])
    # dump(data, stdout, indent=None, separators=(',', ':'), allow_nan=False)
    dump(data, stdout, indent=2, separators=(',', ': '), allow_nan=False)
    print()
except BrokenPipeError:
    exit(0)
except Exception as e:
    print(f'\x1b[31m{str(e)}\x1b[0m', file=stderr)
    exit(1)