#!/usr/bin/env python3
# For restructuring files that have keys like "chat.title"
# into more useful formats

import sys
import json
from collections import defaultdict

with open(sys.argv[1], "r") as f:
    data = json.load(f)

d = defaultdict(str)


def create_and_set(dic, key_path, value):
    if len(key_path) == 1:
        dic[key_path[0]] = value
    else:
        if key_path[0] not in dic:
            dic[key_path[0]] = {}
        create_and_set(dic[key_path[0]], key_path[1:], value)


for key, value in data.items():
    nested_key = key.split(".")
    create_and_set(d, nested_key, value)

with open(sys.argv[1], "w", encoding="utf-8") as f:
    json.dump(d, f, indent=4, sort_keys=True, ensure_ascii=False)