"""Webpage project utilities (Docusaurus build / clear / etc.).

Project metadata lives in `server.py` so that adding a new webpage there
automatically wires it up here.
"""

import subprocess
import time

import click

from bin.commands.server import manageable_services, get_service, no_color_env


_PROJECTS = manageable_services()
_NAMES = [s.name for s in _PROJECTS]


def _run_npm(name: str, script: str, label: str) -> None:
    """Run `npm run <script>` in the project's directory, streaming output."""
    svc = get_service(name)
    assert svc.project_dir is not None  # _NAMES is manageable services only

    if not svc.project_dir.exists():
        click.secho(f"Project directory not found: {svc.project_dir}", fg="red")
        raise click.Abort()

    click.secho(f"{label} {svc.name} ({svc.description}) ...", fg="cyan")
    started = time.time()
    proc = subprocess.run(["npm", "run", script], cwd=svc.project_dir, env=no_color_env())
    elapsed = time.time() - started
    if proc.returncode != 0:
        click.secho(f"{script} failed for {svc.name} (exit {proc.returncode})", fg="red")
        raise click.Abort()
    click.secho(f"{svc.name} {script} done in {elapsed:.1f}s", fg="green")


@click.group(name="webpage")
def webpage_cmd():
    """Manage Docusaurus webpage projects."""
    pass


@webpage_cmd.command("list")
def webpage_list():
    """List managed webpage projects and their build status."""
    click.echo("")
    click.secho(
        f"{'Name':<16} {'Build':<12} {'Description':<36} {'Project'}",
        fg="bright_blue",
        bold=True,
    )
    click.echo("-" * 100)
    for svc in _PROJECTS:
        assert svc.project_dir is not None  # _PROJECTS is manageable services only
        build_dir = svc.project_dir / "build"
        if build_dir.exists():
            build_status = time.strftime("%m-%d %H:%M", time.localtime(build_dir.stat().st_mtime))
            color = "green"
        else:
            build_status = "missing"
            color = "yellow"
        click.secho(
            f"{svc.name:<16} {build_status:<12} {svc.description:<36} {svc.project_dir}",
            fg=color,
        )
    click.echo("")


@webpage_cmd.command("build")
@click.argument("name", type=click.Choice(_NAMES, case_sensitive=False))
def webpage_build(name):
    """Build a webpage project (`npm run build`)."""
    _run_npm(name, "build", "Building")


@webpage_cmd.command("clear")
@click.argument("name", type=click.Choice(_NAMES, case_sensitive=False))
def webpage_clear(name):
    """Clear Docusaurus build artifacts and cache (`npm run clear`)."""
    _run_npm(name, "clear", "Clearing")


@webpage_cmd.command("rebuild")
@click.argument("name", type=click.Choice(_NAMES, case_sensitive=False))
def webpage_rebuild(name):
    """Clear cache then build (`npm run clear && npm run build`)."""
    _run_npm(name, "clear", "Clearing")
    _run_npm(name, "build", "Building")