"""
Version management for ObsiGate.

Uses git describe to generate a SemVer-compatible version string.
Format: MAJOR.MINOR.PATCH[-commits-since-tag-gHASH]

Examples:
  v1.7.0                    (exact tag)
  v1.7.0-3-gabc1234         (3 commits after v1.7.0)
  v1.7.0-dev                (fallback when Git unavailable)
"""
from __future__ import annotations

import subprocess
from pathlib import Path

_ROOT = Path(__file__).resolve().parent.parent  # ObsiGate repo root


def get_version() -> str:
    """Get the current version from Git tags."""
    try:
        result = subprocess.run(
            ["git", "describe", "--tags", "--dirty=-dirty"],
            cwd=str(_ROOT),
            capture_output=True,
            text=True,
            timeout=5,
            check=False,
        )
        if result.returncode == 0:
            tag = result.stdout.strip()
            # git describe returns v1.7.0 or v1.7.0-3-gabc1234
            # Remove leading 'v' if present
            tag = tag.removeprefix("v")
            return tag
    except (FileNotFoundError, subprocess.TimeoutExpired, OSError):
        pass

    # Fallback: try reading from a VERSION file next to this module
    version_file = Path(__file__).parent / "VERSION"
    if version_file.exists():
        return version_file.read_text().strip()

    return "0.0.0-dev"


def get_version_tuple() -> tuple[int, int, int]:
    """Return (major, minor, patch) tuple for programmatic use."""
    raw = get_version()
    # Strip -suffix for parsing
    base = raw.split("-")[0]
    try:
        parts = base.split(".")
        major = int(parts[0]) if len(parts) > 0 else 0
        minor = int(parts[1]) if len(parts) > 1 else 0
        patch = int(parts[2]) if len(parts) > 2 else 0
        return (major, minor, patch)
    except (ValueError, IndexError):
        return (0, 0, 0)


if __name__ == "__main__":
    print(get_version())