"""Render a template's Markdown skeleton and title into a new draft document."""

from datetime import UTC, datetime

from app.authoring.schema import AuthoringTemplate
from app.models import User


def render_title(template: AuthoringTemplate, user: User) -> str:
    today = datetime.now(UTC).date().isoformat()
    return (
        template.title_template.replace("{{user.name}}", user.name)
        .replace("{{date}}", today)
        .strip()
    )


def render_skeleton(template: AuthoringTemplate) -> str:
    """The Markdown the editor opens with: the skeleton verbatim, normalized
    to a single trailing newline. An empty skeleton yields an empty document
    the author fills from scratch."""
    skeleton = template.skeleton.strip()
    return f"{skeleton}\n" if skeleton else ""