"""Where Steward's templates live, for the guards that read every one, and a
way to render a plugin's template in a test."""
import pathlib

from jinja2 import ChoiceLoader, FileSystemLoader

import steward

REPO = pathlib.Path(steward.__file__).parent.parent


def template_files() -> list[pathlib.Path]:
    """Every first-party .html template: core and each plugin's."""
    roots = [REPO / "steward" / "templates", *(REPO / "plugins").glob("*/templates")]
    return sorted(p for root in roots for p in root.rglob("*.html"))


async def render_plugin_template(app, plugin: str, name: str, **ctx) -> str:
    """Render plugins/<plugin>/templates/<name> through the app's own Jinja
    environment (its globals, filters and request context), whether or not the
    plugin is enabled in this app. Call inside app.test_request_context()."""
    env = app.jinja_env.overlay(loader=ChoiceLoader(
        [FileSystemLoader(str(REPO / "plugins" / plugin / "templates")), app.jinja_env.loader]))
    await app.update_template_context(ctx)
    template = env.get_template(name)
    return await template.render_async(**ctx) if env.is_async else template.render(**ctx)