# build/utils.py
from pathlib import Path
import subprocess
import os
import shutil


def mkdir(p: Path):
    p.mkdir(parents=True, exist_ok=True)


def run(cmd, **kwargs):
    print(">>", " ".join(str(c) for c in cmd))
    subprocess.check_call(cmd, **kwargs)


def detect_platform_name():
    import platform
    system = platform.system()
    if system == "Darwin":
        return "macos"
    if system == "Windows":
        return "windows"
    if system == "Linux":
        return "linux"
    return "unknown"


def git_commit_hash():
    try:
        result_hash = subprocess.check_output([
            "git", "describe", "--always", "--dirty", "--abbrev=7"
        ], text=True, stderr=subprocess.DEVNULL).strip()
        result_date = subprocess.check_output([
            "git", "show", "-s", "--format=%ci"
        ], text=True, stderr=subprocess.DEVNULL).strip()
        return f"{result_hash} {result_date}"
    except Exception:
        return "unknown"


def is_up_to_date(src: Path, obj: Path, dep: Path):
    if "meta" in [src.stem, obj.stem, dep.stem]:
        return False
    if not obj.exists():
        return False
    if dep.exists() and dep.stat().st_mtime > obj.stat().st_mtime:
        return False
    return src.stat().st_mtime < obj.stat().st_mtime