import os
from pathlib import Path


def release_version() -> str:
    value = (Path(__file__).parents[2] / "VERSION").read_text(encoding="utf-8").strip()
    if not value or any(part == "" or not part.isdecimal() for part in value.split(".")) or len(value.split(".")) != 3:
        raise RuntimeError("VERSION must contain a semantic version")
    declared = os.getenv("OCR_VERSION")
    if declared is not None and declared != value:
        raise RuntimeError(f"OCR_VERSION must match VERSION ({value})")
    return value