sentry/bin/combine_dsn_list

#!/usr/bin/env python
from __future__ import annotations

import json
from io import TextIOWrapper

import click


@click.command()
@click.argument("old", type=click.File("rb"))
@click.argument("new", type=click.File("rb"))
@click.argument("out", type=click.File("wb"))
def combine_json(old, new, out):
    old_data = json.load(old)
    new_data = json.load(new)

    combined_data = {}

    for key in old_data:
        if key in new_data:
            inner_combined = {}
            for inner_key in old_data[key]:
                if inner_key in new_data[key]:
                    inner_combined[inner_key] = {
                        "old": old_data[key][inner_key],
                        "new": new_data[key][inner_key],
                    }
            if inner_combined:
                combined_data[key] = inner_combined

    dest = TextIOWrapper(out, encoding="utf-8", newline="")
    json.dump(combined_data, dest, indent=2)
    dest.detach()


if __name__ == "__main__":
    combine_json()