#!/usr/bin/env python3
"""Project setup: install Python deps, Ansible collections, and pre-commit hooks.

Also configures the ``tea`` Gitea CLI login profile from ``.env`` so that
CI scripts and dev tools can use ``tea`` for Gitea API operations.

Usage::

    python3 scripts/setup.py --bin .venv/bin
"""

from __future__ import annotations

import os
import shutil
import subprocess  # nosec B404
from pathlib import Path

import click
from dotenv import load_dotenv  # pyright: ignore[reportMissingImports,reportUnknownVariableType]

load_dotenv(override=True)


def _run(cmd: list[str], bin_dir: str) -> None:
    """Run a command, streaming output to stdout/stderr."""
    click.echo(f"  $ {' '.join(cmd)}")
    subprocess.run(cmd, check=True)  # nosec B603


def _install_python_deps(bin_dir: str) -> None:
    """Install the project with dev extras in editable mode."""
    pip = str(Path(bin_dir) / "pip")
    _run([pip, "install", "-e", ".[dev]"], bin_dir)


def _install_ansible_collections(bin_dir: str) -> None:
    """Install required Ansible Galaxy collections."""
    galaxy = str(Path(bin_dir) / "ansible-galaxy")
    requirements = Path("ansible/requirements.yml")
    if not requirements.exists():
        click.echo("  ansible/requirements.yml not found — skipping collections.")
        return
    _run([galaxy, "collection", "install", "-r", str(requirements)], bin_dir)


def _install_pre_commit_hooks(bin_dir: str) -> None:
    """Install pre-commit hooks for commit-msg, pre-commit, and pre-push."""
    pre_commit = str(Path(bin_dir) / "pre-commit")
    for hook_type in ["pre-commit", "commit-msg", "pre-push"]:
        _run([pre_commit, "install", "--hook-type", hook_type], bin_dir)


def _configure_tea_login() -> None:
    """Configure tea CLI login from .env if REPO_TOKEN is set.

    Idempotent: if a login with the same name already exists, it is not re-added.
    Skips silently if tea is not installed or REPO_TOKEN is not set.
    """
    tea_bin = shutil.which("tea")
    if tea_bin is None:
        click.echo("tea: not installed — skipping login configuration.")
        return

    token = os.environ.get("REPO_TOKEN", "")
    if not token:
        click.echo("tea: REPO_TOKEN not set — skipping login configuration.")
        return

    # Derive the Gitea URL from the API URL (strip /api/v1 suffix)
    api_url = os.environ.get("GRM_GITEA_API_URL", "https://git.oblachno.oblachno.fyi/api/v1")
    gitea_url = api_url.replace("/api/v1", "")
    login_name = "grm"

    # Check if login already exists
    result = subprocess.run(  # nosec B603
        [tea_bin, "login", "list", "--output", "simple"],
        capture_output=True,
        text=True,
        check=False,
    )
    if result.returncode == 0 and login_name in result.stdout:
        click.echo(f"tea: login '{login_name}' already configured.")
        return

    # Add login profile
    click.echo(f"tea: configuring login '{login_name}' for {gitea_url}...")
    add_result = subprocess.run(  # nosec B603
        [tea_bin, "login", "add", "--name", login_name, "--url", gitea_url, "--token", token],
        capture_output=True,
        text=True,
        check=False,
    )
    if add_result.returncode != 0:
        click.echo(f"tea: login configuration failed: {add_result.stderr.strip()}", err=True)
    else:
        # Set as default login
        subprocess.run(  # nosec B603
            [tea_bin, "login", "default", login_name],
            capture_output=True,
            text=True,
            check=False,
        )
        click.echo(f"tea: login '{login_name}' configured and set as default.")


def _verify(bin_dir: str) -> None:
    """Print versions of installed tools for verification."""
    grm = str(Path(bin_dir) / "grm")
    pre_commit = str(Path(bin_dir) / "pre-commit")
    for tool in [grm, pre_commit]:
        try:
            result = subprocess.run([tool, "--version"], capture_output=True, text=True, timeout=10)  # nosec B603
            if result.returncode == 0:
                click.echo(f"  {result.stdout.strip()}")
        except (FileNotFoundError, subprocess.TimeoutExpired):
            pass


@click.command()
@click.option("--bin", "bin_dir", default=".venv/bin", help="Path to the virtualenv bin directory.")
def main(bin_dir: str) -> None:
    """Install Python deps, Ansible collections, and pre-commit hooks."""
    if not Path(bin_dir).exists():
        raise click.ClickException(f"Bin directory not found: {bin_dir}. Run 'python3 -m venv .venv' first.")

    click.echo("Installing Python dependencies...")
    _install_python_deps(bin_dir)

    click.echo("Installing Ansible collections...")
    _install_ansible_collections(bin_dir)

    click.echo("Installing pre-commit hooks...")
    _install_pre_commit_hooks(bin_dir)

    click.echo("Configuring tea CLI login...")
    _configure_tea_login()

    click.echo("")
    click.echo("Setup complete.")
    click.echo("Activate the virtual environment with one of:")
    click.echo("  source .venv/bin/activate    (generic)")
    click.echo("  source activate.sh           (bash)")
    click.echo("  source activate.fish         (fish)")
    click.echo("  source activate.zsh          (zsh)")
    click.echo("")

    _verify(bin_dir)


if __name__ == "__main__":  # pragma: no cover
    main()  # pragma: no cover