#!/usr/bin/env python3
#
# Copyright (c) 2010 - 2026, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
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# SPDX-License-Identifier: BSD-3-Clause
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# We kindly request you to use one or more of the following phrases to refer to
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# - "This product uses parts of foxBMS®"
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"""Utilities for retrieving and formatting the foxBMS version string."""

import re
import sys
from pathlib import Path


def extract_version(txt: str, pattern: re.Pattern[str]) -> str:
    """Extract a version string from text using the supplied regex pattern."""
    version = ""
    for line in txt.splitlines():
        m = pattern.search(line)
        if m:
            version = m.group(1)
    if not version:
        sys.exit("Could not determine foxBMS 2 version.")
    return version


def get_version() -> str:
    """Read the foxBMS version from the build file."""
    try:
        txt = (Path(__file__).parent.parent / "wscript").read_text(encoding="utf-8")
    except FileNotFoundError:
        txt = (Path(__file__).parent / "version.py").read_text(encoding="utf-8")
    pattern = re.compile(r"VERSION = \"((x\.y\.z)|(\d{1,}\.\d{1,}\.\d{1,}))\"")
    return extract_version(txt, pattern)


def get_numeric_version() -> str:
    """Convert the foxBMS version into a dot-separated numeric string."""
    numeric_version = get_version().split(".")
    for index, part in enumerate(numeric_version):
        if not part.isnumeric():
            numeric_version[index] = str(ord(part))
    return ".".join(numeric_version)


__version__ = get_version()