"""Build and push container images for Telegram Message Hook.

This script builds the repository Docker image with two tags:
- ``latest``
- a date-based tag ``YYYYMMDD``

Both tags are pushed to ``git.beging.de/troogs/{image_name}``.
"""

from __future__ import annotations

import argparse
import datetime as dt
import subprocess
import sys
from pathlib import Path
from typing import Sequence


def run(command: Sequence[str]) -> None:
    """Execute a shell command and raise on failure."""
    print("→", " ".join(command))
    try:
        subprocess.run(command, check=True)
    except subprocess.CalledProcessError as exc:  # pragma: no cover - pass-through
        raise SystemExit(exc.returncode) from exc


def parse_args(argv: Sequence[str]) -> argparse.Namespace:
    parser = argparse.ArgumentParser(description="Build and publish Docker images")
    parser.add_argument(
        "image_name",
        nargs="?",
        default=Path.cwd().name.lower().replace(" ", "-"),
        help="Base image name (default: current directory name)",
    )
    parser.add_argument(
        "--context",
        default=".",
        help="Docker build context directory (default: current directory)",
    )
    parser.add_argument(
        "--dockerfile",
        default=None,
        help="Optional path to Dockerfile relative to context.",
    )
    return parser.parse_args(argv)


def main(argv: Sequence[str] | None = None) -> int:
    args = parse_args(argv or sys.argv[1:])

    date_tag = dt.datetime.utcnow().strftime("%Y%m%d")
    registry = f"git.beging.de/troogs/{args.image_name}"

    tags = [f"{registry}:latest", f"{registry}:{date_tag}"]

    build_cmd = ["docker", "build", *sum((['-t', tag] for tag in tags), []), args.context]
    if args.dockerfile:
        build_cmd.extend(["-f", args.dockerfile])

    run(build_cmd)

    for tag in tags:
        run(["docker", "push", tag])

    print("✔ Published:", ", ".join(tags))
    return 0


if __name__ == "__main__":
    raise SystemExit(main())