#!/usr/bin/env python3
"""Validate Novela release version state before a release build.

Releases must ship with BUILD = 0 so the sidebar shows a clean semantic
version (e.g. v0.2.11) instead of a dev build (e.g. v0.2.11.3).
"""
from __future__ import annotations

import re
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
VERSION_FILE = ROOT / "containers" / "novela" / "version.py"

text = VERSION_FILE.read_text()
match = re.search(r"^BUILD = (\d+)\s*$", text, flags=re.MULTILINE)
if not match:
    raise SystemExit(f"BUILD assignment not found in {VERSION_FILE}")

build = int(match.group(1))
if build != 0:
    raise SystemExit(
        f"Release builds require BUILD = 0 in {VERSION_FILE}; found BUILD = {build}. "
        f"Reset it before releasing."
    )

print("[check-release-version] BUILD = 0")