"""Ensure required CLI tools are installed."""

import os
import shutil
import subprocess
import sys


def ensure_aws():
    if shutil.which("aws"):
        subprocess.run(["aws", "--version"], check=True)
        return
    print("Installing awscli...")
    subprocess.run(
        [sys.executable, "-m", "pip", "install", "--quiet", "--break-system-packages", "awscli"],
        check=False,
    )
    local_bin = os.path.expanduser("~/.local/bin")
    os.environ["PATH"] = f"{local_bin}:{os.environ['PATH']}"
    github_path = os.environ.get("GITHUB_PATH")
    if github_path:
        with open(github_path, "a") as f:
            f.write(f"{local_bin}\n")
    subprocess.run(["aws", "--version"], check=True)


def ensure_docker():
    if shutil.which("docker"):
        subprocess.run(["docker", "version", "--format", "{{.Client.Version}}"], check=True)
        return
    print("WARNING: docker CLI not found — docker builds will fail", file=sys.stderr)


def ensure_jinja2():
    try:
        import jinja2
    except ImportError:
        print("Installing jinja2 + pyyaml...")
        subprocess.run(
            [sys.executable, "-m", "pip", "install", "--quiet", "--break-system-packages", "jinja2", "pyyaml"],
            check=True,
        )


if __name__ == "__main__":
    ensure_jinja2()
    ensure_aws()
    ensure_docker()
    print("Setup complete")