from typing import Tuple


def parse_semver(v: str) -> Tuple[int, int, int]:
    try:
        parts = v.split(".")
        major = int(parts[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 Exception:
        return 0, 0, 0


def compatibility(peer: str, current: str) -> str:
    """Return one of: compatible, warning, blocked"""
    pM, pm, pp = parse_semver(peer)
    cM, cm, cp = parse_semver(current)
    if pM != cM:
        return "blocked"
    # Same major
    if pm == cm:
        return "compatible"
    # Different minor within same major => warning
    return "warning"