"""App version + changelog, sourced from changelog.json (single source of truth).

Cut releases with:  python release.py <version> "<what changed>" ...
That prepends an entry to changelog.json and regenerates CHANGELOG.md. The
footer version chip and the /changelog page read from here automatically.
"""
import json
import os

_CHANGELOG_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "changelog.json")

try:
    with open(_CHANGELOG_PATH) as f:
        CHANGELOG = json.load(f)
except (OSError, json.JSONDecodeError):
    CHANGELOG = []

__version__ = CHANGELOG[0]["version"] if CHANGELOG else "0.0.0"